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  • Java: immutability, overuse of stack -- better data structure?

    - by HH
    I overused hashSets but it was slow, then changed to Stacks, speed boost-up. Poly's reply uses Collections.emptyList() as immutable list, cutting out excess null-checkers. No Collections.emptyStack(). Combining the words stack and immutability, from the last experiences, gets "immutable stack" (probably not related to functional prog). Java Api 5 for list interface shows that Stack is an implementing class for list and arraylist, here. The java.coccurrent pkg does not have any immutable Stack data structure. The first hinted of misusing stack. The lack of immutabily in the last and poly's book recommendation leads way to list. Something very primitive, fast, no extra layers, with methods like emptyThing(). Overuse of stack and where I use it DataFile.java: public Stack<DataFile> files; FileObject.java: public Stack<String> printViews = new Stack<String>(); FileObject.java:// private static Stack<Object> getFormat(File f){return (new Format(f)).getFormat();} Format.java: private Stack<Object> getLine(File[] fs,String s){return wF;} Format.java: private Stack<Object> getFormat(){return format;} Positions.java: public static Stack<Integer[]> getPrintPoss(String s,File f,Integer maxViewPerF) Positions.java: Stack<File> possPrint = new Stack<File>(); Positions.java: Stack<Integer> positions=new Stack<Integer>(); Record.java: private String getFormatLine(Stack<Object> st) Record.java: Stack<String> lines=new Stack<String>(); SearchToUser.java: public static final Stack<File> allFiles = findf.getFs(); SearchToUser.java: public static final Stack<File> allDirs = findf.getDs(); SearchToUser.java: private Stack<Integer[]> positionsPrint=new Stack<Integer[]>(); SearchToUser.java: public Stack<String> getSearchResults(String s, Integer countPerFile, Integer resCount) SearchToUser.java: Stack<File> filesToS=Fs2Word.getFs2W(s,50); SearchToUser.java: Stack<String> rs=new Stack<String>(); View.java: public Stack<Integer[]> poss = new Stack<Integer[4]>(); View.java: public static Stack<String> getPrintViewsFileWise(String s,Object[] df,Integer maxViewsPerF) View.java: Stack<String> substrings = new Stack<String>(); View.java: private Stack<String> printViews=new Stack<String>(); View.java: MatchView(Stack<Integer> pss,File f,Integer maxViews) View.java: Stack<String> formatFile; View.java: private Stack<Search> files; View.java: private Stack<File> matchingFiles; View.java: private Stack<String> matchViews; View.java: private Stack<String> searchMatches; View.java: private Stack<String> getSearchResults(Integer numbResults) Easier with List: AllDirs and AllFs, now looping with push, but list has more pow. methods such as addAll [OLD] From Stack to some immutable data structure How to get immutable Stack data structure? Can I box it with list? Should I switch my current implementatios from stacks to Lists to get immutable? Which immutable data structure is Very fast with about similar exec time as Stack? No immutability to Stack with Final import java.io.*; import java.util.*; public class TestStack{ public static void main(String[] args) { final Stack<Integer> test = new Stack<Integer>(); Stack<Integer> test2 = new Stack<Integer>(); test.push(37707); test2.push(80437707); //WHY is there not an error to remove an elment // from FINAL stack? System.out.println(test.pop()); System.out.println(test2.pop()); } }

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  • Help with Nicedit - removeFormat function

    - by Franck
    Hello, I'm trying to get around Nicedit, and especially the "removeFormat" function. The problem is I cannot find the "removeFormat" method source code in the code below. The JS syntax looks strange to me. Can someone help me ? /* NicEdit - Micro Inline WYSIWYG * Copyright 2007-2008 Brian Kirchoff * * NicEdit is distributed under the terms of the MIT license * For more information visit http://nicedit.com/ * Do not remove this copyright message */ var bkExtend = function(){ var A = arguments; if (A.length == 1) { A = [this, A[0]] } for (var B in A[1]) { A[0][B] = A[1][B] } return A[0] }; function bkClass(){ } bkClass.prototype.construct = function(){ }; bkClass.extend = function(C){ var A = function(){ if (arguments[0] !== bkClass) { return this.construct.apply(this, arguments) } }; var B = new this(bkClass); bkExtend(B, C); A.prototype = B; A.extend = this.extend; return A }; var bkElement = bkClass.extend({ construct: function(B, A){ if (typeof(B) == "string") { B = (A || document).createElement(B) } B = $BK(B); return B }, appendTo: function(A){ A.appendChild(this); return this }, appendBefore: function(A){ A.parentNode.insertBefore(this, A); return this }, addEvent: function(B, A){ bkLib.addEvent(this, B, A); return this }, setContent: function(A){ this.innerHTML = A; return this }, pos: function(){ var C = curtop = 0; var B = obj = this; if (obj.offsetParent) { do { C += obj.offsetLeft; curtop += obj.offsetTop } while (obj = obj.offsetParent) } var A = (!window.opera) ? parseInt(this.getStyle("border-width") || this.style.border) || 0 : 0; return [C + A, curtop + A + this.offsetHeight] }, noSelect: function(){ bkLib.noSelect(this); return this }, parentTag: function(A){ var B = this; do { if (B && B.nodeName && B.nodeName.toUpperCase() == A) { return B } B = B.parentNode } while (B); return false }, hasClass: function(A){ return this.className.match(new RegExp("(\s|^)nicEdit-" + A + "(\s|$)")) }, addClass: function(A){ if (!this.hasClass(A)) { this.className += " nicEdit-" + A } return this }, removeClass: function(A){ if (this.hasClass(A)) { this.className = this.className.replace(new RegExp("(\s|^)nicEdit-" + A + "(\s|$)"), " ") } return this }, setStyle: function(A){ var B = this.style; for (var C in A) { switch (C) { case "float": B.cssFloat = B.styleFloat = A[C]; break; case "opacity": B.opacity = A[C]; B.filter = "alpha(opacity=" + Math.round(A[C] * 100) + ")"; break; case "className": this.className = A[C]; break; default: B[C] = A[C] } } return this }, getStyle: function(A, C){ var B = (!C) ? document.defaultView : C; if (this.nodeType == 1) { return (B && B.getComputedStyle) ? B.getComputedStyle(this, null).getPropertyValue(A) : this.currentStyle[bkLib.camelize(A)] } }, remove: function(){ this.parentNode.removeChild(this); return this }, setAttributes: function(A){ for (var B in A) { this[B] = A[B] } return this } }); var bkLib = { isMSIE: (navigator.appVersion.indexOf("MSIE") != -1), addEvent: function(C, B, A){ (C.addEventListener) ? C.addEventListener(B, A, false) : C.attachEvent("on" + B, A) }, toArray: function(C){ var B = C.length, A = new Array(B); while (B--) { A[B] = C[B] } return A }, noSelect: function(B){ if (B.setAttribute && B.nodeName.toLowerCase() != "input" && B.nodeName.toLowerCase() != "textarea") { B.setAttribute("unselectable", "on") } for (var A = 0; A < B.childNodes.length; A++) { bkLib.noSelect(B.childNodes[A]) } }, camelize: function(A){ return A.replace(/-(.)/g, function(B, C){ return C.toUpperCase() }) }, inArray: function(A, B){ return (bkLib.search(A, B) != null) }, search: function(A, C){ for (var B = 0; B < A.length; B++) { if (A[B] == C) { return B } } return null }, cancelEvent: function(A){ A = A || window.event; if (A.preventDefault && A.stopPropagation) { A.preventDefault(); A.stopPropagation() } return false }, domLoad: [], domLoaded: function(){ if (arguments.callee.done) { return } arguments.callee.done = true; for (i = 0; i < bkLib.domLoad.length; i++) { bkLib.domLoadi } }, onDomLoaded: function(A){ this.domLoad.push(A); if (document.addEventListener) { document.addEventListener("DOMContentLoaded", bkLib.domLoaded, null) } else { if (bkLib.isMSIE) { document.write(".nicEdit-main p { margin: 0; }<\/script"); $BK("__ie_onload").onreadystatechange = function(){ if (this.readyState == "complete") { bkLib.domLoaded() } } } } window.onload = bkLib.domLoaded } }; function $BK(A){ if (typeof(A) == "string") { A = document.getElementById(A) } return (A && !A.appendTo) ? bkExtend(A, bkElement.prototype) : A } var bkEvent = { addEvent: function(A, B){ if (B) { this.eventList = this.eventList || {}; this.eventList[A] = this.eventList[A] || []; this.eventList[A].push(B) } return this }, fireEvent: function(){ var A = bkLib.toArray(arguments), C = A.shift(); if (this.eventList && this.eventList[C]) { for (var B = 0; B < this.eventList[C].length; B++) { this.eventList[C][B].apply(this, A) } } } }; function __(A){ return A } Function.prototype.closure = function(){ var A = this, B = bkLib.toArray(arguments), C = B.shift(); return function(){ if (typeof(bkLib) != "undefined") { return A.apply(C, B.concat(bkLib.toArray(arguments))) } } }; Function.prototype.closureListener = function(){ var A = this, C = bkLib.toArray(arguments), B = C.shift(); return function(E){ E = E || window.event; if (E.target) { var D = E.target } else { var D = E.srcElement } return A.apply(B, [E, D].concat(C)) } }; var nicEditorConfig = bkClass.extend({ buttons: { 'bold': { name: _('Mettre en gras'), command: 'Bold', tags: ['B', 'STRONG'], css: { 'font-weight': 'bold' }, key: 'b' }, 'italic': { name: _('Mettre en italique'), command: 'Italic', tags: ['EM', 'I'], css: { 'font-style': 'italic' }, key: 'i' }, 'underline': { name: _('Souligner'), command: 'Underline', tags: ['U'], css: { 'text-decoration': 'underline' }, key: 'u' }, 'left': { name: _('Aligné à gauche'), command: 'justifyleft', noActive: true }, 'center': { name: _('Centré'), command: 'justifycenter', noActive: true }, 'right': { name: _('Aligné à droite'), command: 'justifyright', noActive: true }, 'justify': { name: _('Justifié'), command: 'justifyfull', noActive: true }, 'ol': { name: _('Liste non ordonnée'), command: 'insertorderedlist', tags: ['OL'] }, 'ul': { name: _('Liste non ordonnée'), command: 'insertunorderedlist', tags: ['UL'] }, 'subscript': { name: _('Placer en indice'), command: 'subscript', tags: ['SUB'] }, 'superscript': { name: _('Placer en exposant'), command: 'superscript', tags: ['SUP'] }, 'strikethrough': { name: _('Barrer le texte'), command: 'strikeThrough', css: { 'text-decoration': 'line-through' } }, 'removeformat': { name: _('Supprimer la mise en forme'), command: 'removeformat', noActive: true }, 'indent': { name: _('Indenter'), command: 'indent', noActive: true }, 'outdent': { name: _('Remove Indent'), command: 'outdent', noActive: true }, 'hr': { name: _('Ligne horizontale'), command: 'insertHorizontalRule', noActive: true } }, iconsPath: 'http://js.nicedit.com/nicEditIcons-latest.gif', buttonList: ['save', 'bold', 'italic', 'underline', 'left', 'center', 'right', 'justify', 'ol', 'ul', 'fontSize', 'fontFamily', 'fontFormat', 'indent', 'outdent', 'image', 'upload', 'link', 'unlink', 'forecolor', 'bgcolor'], iconList: { "xhtml": 1, "bgcolor": 2, "forecolor": 3, "bold": 4, "center": 5, "hr": 6, "indent": 7, "italic": 8, "justify": 9, "left": 10, "ol": 11, "outdent": 12, "removeformat": 13, "right": 14, "save": 25, "strikethrough": 16, "subscript": 17, "superscript": 18, "ul": 19, "underline": 20, "image": 21, "link": 22, "unlink": 23, "close": 24, "arrow": 26, "upload": 27, "question":2 } }); ; var nicEditors = { nicPlugins: [], editors: [], registerPlugin: function(B, A){ this.nicPlugins.push({ p: B, o: A }) }, allTextAreas: function(C){ var A = document.getElementsByTagName("textarea"); for (var B = 0; B < A.length; B++) { nicEditors.editors.push(new nicEditor(C).panelInstance(A[B])) } return nicEditors.editors }, findEditor: function(C){ var B = nicEditors.editors; for (var A = 0; A < B.length; A++) { if (B[A].instanceById(C)) { return B[A].instanceById(C) } } } }; var nicEditor = bkClass.extend({ construct: function(C){ this.options = new nicEditorConfig(); bkExtend(this.options, C); this.nicInstances = new Array(); this.loadedPlugins = new Array(); var A = nicEditors.nicPlugins; for (var B = 0; B < A.length; B++) { this.loadedPlugins.push(new A[B].p(this, A[B].o)) } nicEditors.editors.push(this); bkLib.addEvent(document.body, "mousedown", this.selectCheck.closureListener(this)) }, panelInstance: function(B, C){ B = this.checkReplace($BK(B)); var A = new bkElement("DIV").setStyle({ width: (parseInt(B.getStyle("width")) || B.clientWidth) + "px" }).appendBefore(B); this.setPanel(A); return this.addInstance(B, C) }, checkReplace: function(B){ var A = nicEditors.findEditor(B); if (A) { A.removeInstance(B); A.removePanel() } return B }, addInstance: function(B, C){ B = this.checkReplace($BK(B)); if (B.contentEditable || !!window.opera) { var A = new nicEditorInstance(B, C, this) } else { var A = new nicEditorIFrameInstance(B, C, this) } this.nicInstances.push(A); return this }, removeInstance: function(C){ C = $BK(C); var B = this.nicInstances; for (var A = 0; A < B.length; A++) { if (B[A].e == C) { B[A].remove(); this.nicInstances.splice(A, 1) } } }, removePanel: function(A){ if (this.nicPanel) { this.nicPanel.remove(); this.nicPanel = null } }, instanceById: function(C){ C = $BK(C); var B = this.nicInstances; for (var A = 0; A < B.length; A++) { if (B[A].e == C) { return B[A] } } }, setPanel: function(A){ this.nicPanel = new nicEditorPanel($BK(A), this.options, this); this.fireEvent("panel", this.nicPanel); return this }, nicCommand: function(B, A){ if (this.selectedInstance) { this.selectedInstance.nicCommand(B, A) } }, getIcon: function(D, A){ var C = this.options.iconList[D]; var B = (A.iconFiles) ? A.iconFiles[D] : ""; return { backgroundImage: "url('" + ((C) ? this.options.iconsPath : B) + "')", backgroundPosition: ((C) ? ((C - 1) * -18) : 0) + "px 0px" } }, selectCheck: function(C, A){ var B = false; do { if (A.className && A.className.indexOf("nicEdit") != -1) { return false } } while (A = A.parentNode); this.fireEvent("blur", this.selectedInstance, A); this.lastSelectedInstance = this.selectedInstance; this.selectedInstance = null; return false } }); nicEditor = nicEditor.extend(bkEvent); var nicEditorInstance = bkClass.extend({ isSelected: false, construct: function(G, D, C){ this.ne = C; this.elm = this.e = G; this.options = D || {}; newX = parseInt(G.getStyle("width")) || G.clientWidth; newY = parseInt(G.getStyle("height")) || G.clientHeight; this.initialHeight = newY - 8; var H = (G.nodeName.toLowerCase() == "textarea"); if (H || this.options.hasPanel) { var B = (bkLib.isMSIE && !((typeof document.body.style.maxHeight != "undefined") && document.compatMode == "CSS1Compat")); var E = { width: newX + "px", border: "1px solid #ccc", borderTop: 0, overflowY: "auto", overflowX: "hidden" }; E[(B) ? "height" : "maxHeight"] = (this.ne.options.maxHeight) ? this.ne.options.maxHeight + "px" : null; this.editorContain = new bkElement("DIV").setStyle(E).appendBefore(G); var A = new bkElement("DIV").setStyle({ width: (newX - 8) + "px", margin: "4px", minHeight: newY + "px" }).addClass("main").appendTo(this.editorContain); G.setStyle({ display: "none" }); A.innerHTML = G.innerHTML; if (H) { A.setContent(G.value); this.copyElm = G; var F = G.parentTag("FORM"); if (F) { bkLib.addEvent(F, "submit", this.saveContent.closure(this)) } } A.setStyle((B) ? { height: newY + "px" } : { overflow: "hidden" }); this.elm = A } this.ne.addEvent("blur", this.blur.closure(this)); this.init(); this.blur() }, init: function(){ this.elm.setAttribute("contentEditable", "true"); if (this.getContent() == "") { this.setContent("") } this.instanceDoc = document.defaultView; this.elm.addEvent("mousedown", this.selected.closureListener(this)).addEvent("keypress", this.keyDown.closureListener(this)).addEvent("focus", this.selected.closure(this)).addEvent("blur", this.blur.closure(this)).addEvent("keyup", this.selected.closure(this)); this.elm.addEvent("resizestart",function(){return false}); this.elm.addEvent("dragstart",function(){return false}); this.ne.fireEvent("add", this); }, remove: function(){ this.saveContent(); if (this.copyElm || this.options.hasPanel) { this.editorContain.remove(); this.e.setStyle({ display: "block" }); this.ne.removePanel() } this.disable(); this.ne.fireEvent("remove", this) }, disable: function(){ this.elm.setAttribute("contentEditable", "false") }, getSel: function(){ return (window.getSelection) ? window.getSelection() : document.selection }, getRng: function(){ var A = this.getSel(); if (!A) { return null } return (A.rangeCount 0) ? A.getRangeAt(0) : A.createRange() }, selRng: function(A, B){ if (window.getSelection) { B.removeAllRanges(); B.addRange(A) } else { A.select() } }, selElm: function(){ var C = this.getRng(); if (C.startContainer) { var D = C.startContainer; if (C.cloneContents().childNodes.length == 1) { for (var B = 0; B < D.childNodes.length; B++) { var A = D.childNodes[B].ownerDocument.createRange(); A.selectNode(D.childNodes[B]); if (C.compareBoundaryPoints(Range.START_TO_START, A) != 1 && C.compareBoundaryPoints(Range.END_TO_END, A) != -1) { return $BK(D.childNodes[B]) } } } return $BK(D) } else { return $BK((this.getSel().type == "Control") ? C.item(0) : C.parentElement()) } }, saveRng: function(){ this.savedRange = this.getRng(); this.savedSel = this.getSel() }, restoreRng: function(){ if (this.savedRange) { this.selRng(this.savedRange, this.savedSel) } }, keyDown: function(B, A){ if (B.ctrlKey) { this.ne.fireEvent("key", this, B) } }, selected: function(C, A){ if (!A) { A = this.selElm() } if (!C.ctrlKey) { var B = this.ne.selectedInstance; if (B != this) { if (B) { this.ne.fireEvent("blur", B, A) } this.ne.selectedInstance = this; this.ne.fireEvent("focus", B, A) } this.ne.fireEvent("selected", B, A); this.isFocused = true; this.elm.addClass("selected") } return false }, blur: function(){ this.isFocused = false; this.elm.removeClass("selected") }, saveContent: function(){ if (this.copyElm || this.options.hasPanel) { this.ne.fireEvent("save", this); (this.copyElm) ? this.copyElm.value = this.getContent() : this.e.innerHTML = this.getContent() } }, getElm: function(){ return this.elm }, getContent: function(){ this.content = this.getElm().innerHTML; this.ne.fireEvent("get", this); return this.content }, setContent: function(A){ this.content = A; this.ne.fireEvent("set", this); this.elm.innerHTML = this.content }, nicCommand: function(B, A){ document.execCommand(B, false, A) } }); var nicEditorIFrameInstance = nicEditorInstance.extend({ savedStyles: [], init: function(){ var B = this.elm.innerHTML.replace(/^\s+|\s+$/g, ""); this.elm.innerHTML = ""; (!B) ? B = "" : B; this.initialContent = B; this.elmFrame = new bkElement("iframe").setAttributes({ src: "javascript:;", frameBorder: 0, allowTransparency: "true", scrolling: "no" }).setStyle({ height: "100px", width: "100%" }).addClass("frame").appendTo(this.elm); if (this.copyElm) { this.elmFrame.setStyle({ width: (this.elm.offsetWidth - 4) + "px" }) } var A = ["font-size", "font-family", "font-weight", "color"]; for (itm in A) { this.savedStyles[bkLib.camelize(itm)] = this.elm.getStyle(itm) } setTimeout(this.initFrame.closure(this), 50) }, disable: function(){ this.elm.innerHTML = this.getContent() }, initFrame: function(){ var B = $BK(this.elmFrame.contentWindow.document); B.designMode = "on"; B.open(); var A = this.ne.options.externalCSS; B.write("" + ((A) ? '' : "") + '' + this.initialContent + ""); B.close(); this.frameDoc = B; this.frameWin = $BK(this.elmFrame.contentWindow); this.frameContent = $BK(this.frameWin.document.body).setStyle(this.savedStyles); this.instanceDoc = this.frameWin.document.defaultView; this.heightUpdate(); this.frameDoc.addEvent("mousedown", this.selected.closureListener(this)).addEvent("keyup", this.heightUpdate.closureListener(this)).addEvent("keydown", this.keyDown.closureListener(this)).addEvent("keyup", this.selected.closure(this)); this.ne.fireEvent("add", this) }, getElm: function(){ return this.frameContent }, setContent: function(A){ this.content = A; this.ne.fireEvent("set", this); this.frameContent.innerHTML = this.content; this.heightUpdate() }, getSel: function(){ return (this.frameWin) ? this.frameWin.getSelection() : this.frameDoc.selection }, heightUpdate: function(){ this.elmFrame.style.height = Math.max(this.frameContent.offsetHeight, this.initialHeight) + "px" }, nicCommand: function(B, A){ this.frameDoc.execCommand(B, false, A); setTimeout(this.heightUpdate.closure(this), 100) } }); var nicEditorPanel = bkClass.extend({ construct: function(E, B, A){ this.elm = E; this.options = B; this.ne = A; this.panelButtons = new Array(); this.buttonList = bkExtend([], this.ne.options.buttonList); this.panelContain = new bkElement("DIV").setStyle({ overflow: "hidden", width: "100%", border: "1px solid #cccccc", backgroundColor: "#efefef" }).addClass("panelContain"); this.panelElm = new bkElement("DIV").setStyle({ margin: "2px", marginTop: "0px", zoom: 1, overflow: "hidden" }).addClass("panel").appendTo(this.panelContain); this.panelContain.appendTo(E); var C = this.ne.options; var D = C.buttons; for (button in D) { this.addButton(button, C, true) } this.reorder(); E.noSelect() }, addButton: function(buttonName, options, noOrder){ var button = options.buttons[buttonName]; var type = (button.type) ? eval("(typeof(" + button.type + ') == "undefined") ? null : ' + button.type + ";") : nicEditorButton; var hasButton = bkLib.inArray(this.buttonList, buttonName); if (type && (hasButton || this.ne.options.fullPanel)) { this.panelButtons.push(new type(this.panelElm, buttonName, options, this.ne)); if (!hasButton) { this.buttonList.push(buttonName) } } }, findButton: function(B){ for (var A = 0; A < this.panelButtons.length; A++) { if (this.panelButtons[A].name == B) { return this.panelButtons[A] } } }, reorder: function(){ var C = this.buttonList; for (var B = 0; B < C.length; B++) { var A = this.findButton(C[B]); if (A) { this.panelElm.appendChild(A.margin) } } }, remove: function(){ this.elm.remove() } }); var nicEditorButton = bkClass.extend({ construct: function(D, A, C, B){ this.options = C.buttons[A]; this.name = A; this.ne = B; this.elm = D; this.margin = new bkElement("DIV").setStyle({ "float": "left", marginTop: "2px" }).appendTo(D); this.contain = new bkElement("DIV").setStyle({ width: "20px", height: "20px" }).addClass("buttonContain").appendTo(this.margin); this.border = new bkElement("DIV").setStyle({ backgroundColor: "#efefef", border: "1px solid #efefef" }).appendTo(this.contain); this.button = new bkElement("DIV").setStyle({ width: "18px", height: "18px", overflow: "hidden", zoom: 1, cursor: "pointer" }).addClass("button").setStyle(this.ne.getIcon(A, C)).appendTo(this.border); this.button.addEvent("mouseover", this.hoverOn.closure(this)).addEvent("mouseout", this.hoverOff.closure(this)).addEvent("mousedown", this.mouseClick.closure(this)).noSelect(); if (!window.opera) { this.button.onmousedown = this.button.onclick = bkLib.cancelEvent } B.addEvent("selected", this.enable.closure(this)).addEvent("blur", this.disable.closure(this)).addEvent("key", this.key.closure(this)); this.disable(); this.init() }, init: function(){ }, hide: function(){ this.contain.setStyle({ display: "none" }) }, updateState: function(){ if (this.isDisabled) { this.setBg() } else { if (this.isHover) { this.setBg("hover") } else { if (this.isActive) { this.setBg("active") } else { this.setBg() } } } }, setBg: function(A){ switch (A) { case "hover": var B = { border: "1px solid #666", backgroundColor: "#ddd" }; break; case "active": var B = { border: "1px solid #666", backgroundColor: "#ccc" }; break; default: var B = { border: "1px solid #efefef", backgroundColor: "#efefef" } } this.border.setStyle(B).addClass("button-" + A) }, checkNodes: function(A){ var B = A; do { if (this.options.tags && bkLib.inArray(this.options.tags, B.nodeName)) { this.activate(); return true } } while (B = B.parentNode && B.className != "nicEdit"); B = $BK(A); while (B.nodeType == 3) { B = $BK(B.parentNode) } if (this.options.css) { for (itm in this.options.css) { if (B.getStyle(itm, this.ne.selectedInstance.instanceDoc) == this.options.css[itm]) { this.activate(); return true } } } this.deactivate(); return false }, activate: function(){ if (!this.isDisabled) { this.isActive = true; this.updateState(); this.ne.fireEvent("buttonActivate", this) } }, deactivate: function(){ this.isActive = false; this.updateState(); if (!this.isDisabled) { th

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  • Entity Framework SaveChanges error details

    - by Marek Karbarz
    When saving changes with SaveChanges on a data context is there a way to determine which Entity causes an error? For example, sometimes I'll forget to assign a date to a non-nullable date field and get "Invalid Date Range" error, but I get no information about which entity or which field it's caused by (I can usually track it down by painstakingly going through all my objects, but it's very time consuming). Stack trace is pretty useless as it only shows me an error at the SaveChanges call without any additional information as to where exactly it happened. Note that I'm not looking to solve any particular problem I have now, I would just like to know in general if there's a way to tell which entity/field is causing a problem. Quick sample of a stack trace as an example - in this case an error happened because CreatedOn date was not set on IAComment entity, however it's impossible to tell from this error/stack trace [SqlTypeException: SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.] System.Data.SqlTypes.SqlDateTime.FromTimeSpan(TimeSpan value) +2127345 System.Data.SqlTypes.SqlDateTime.FromDateTime(DateTime value) +232 System.Data.SqlClient.MetaType.FromDateTime(DateTime dateTime, Byte cb) +46 System.Data.SqlClient.TdsParser.WriteValue(Object value, MetaType type, Byte scale, Int32 actualLength, Int32 encodingByteSize, Int32 offset, TdsParserStateObject stateObj) +4997789 System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc) +6248 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +987 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +162 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +32 System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +141 System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +12 System.Data.Common.DbCommand.ExecuteReader(CommandBehavior behavior) +10 System.Data.Mapping.Update.Internal.DynamicUpdateCommand.Execute(UpdateTranslator translator, EntityConnection connection, Dictionary`2 identifierValues, List`1 generatedValues) +8084396 System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) +267 [UpdateException: An error occurred while updating the entries. See the inner exception for details.] System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter) +389 System.Data.EntityClient.EntityAdapter.Update(IEntityStateManager entityCache) +163 System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options) +609 IADAL.IAController.Save(IAHeader head) in C:\Projects\IA\IADAL\IAController.cs:61 IA.IAForm.saveForm(Boolean validate) in C:\Projects\IA\IA\IAForm.aspx.cs:198 IA.IAForm.advance_Click(Object sender, EventArgs e) in C:\Projects\IA\IA\IAForm.aspx.cs:287 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112 System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5019

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  • Binding to the selected item in an ItemsControl

    - by Jensen
    I created a custom ComboBox as follows: (note, code is not correct but you should get the general idea.) The ComboBox contains 2 dependency properties which matter: TitleText and DescriptionText. <Grid> <TextBlock x:Name="Title"/> <Grid x:Name="CBG"> <ToggleButton/> <ContentPresenter/> <Popup/> </Grid> </Grid> I want to use this ComboBox to display a wide range of options. I created a class called Setting which inherits from DependencyObject to create usable items, I created a DataTemplate to bind the contents of this Settings object to my ComboBox and created a UserControl which contains an ItemControl which has as a template my previously mentioned DataTemplate. I can fill it with Setting objects. <DataTemplate x:Key="myDataTemplate"> <ComboBox TitleText="{Binding Title}" DescriptionText="{Binding DescriptionText}"/> </DataTemplate> <UserControl> <Grid> <StackPanel Grid.Column="0"> <ItemsControl Template="{StaticResource myDataTemplate}"> <Item> <Setting Title="Foo" Description="Bar"> <Option>Yes</Option><Option>No</Option> </Setting> </Item> </ItemsControl> </StackPanel> <StackPanel Grid.Column="1"> <TextBlock x:Name="Description"/> </StackPanel> </Grid> </UserControl> I would like to have the DescriptionText of the selected ComboBox (selected by either the IsFocus of the ComboBox control or the IsOpen property of the popup) to be placed in the Description TextBlock in my UserControl. One way I managed to achieve this was replacing my ItemsControl by a ListBox but this caused several issues: it always showed a scrollbar even though I disabled it, it wouldn't catch focus when my popup was open but only when I explicitly selected the item in my ListBox, when I enabled the OverridesDefaultStyle property the contents of the ListBox wouldn't show up at all, I had to re-theme the ListBox control to match my UserControl layout... What's the best and easiest way to get my DescriptionText to show up without using a ListBox or creating a custom Selector control (as that had the same effect as a ListBox)? The goal at the end is to loop through all the items (maybe get them into an ObservableCollection or some sort and to save them into my settings file.

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  • Why do many software projects fail today?

    - by TomTom
    As long as there are software projects, the world is wondering why they fail so often. I would like to know if there is a list or something equivalent which shows how many software projects fail today. Would be nice if there would be a comparison over the last 20 - 30 years. You can also add your top reason why a software project fails. Mine is "Requirements are poor or not even existing." which includes also "No (real) customer / user involved". EDIT: It is nearly impossible to clearly define the term "fail". Let's say that fail means: The project was more than 10% over budget and time. In my opinion the 10% + / - is a good range for an offer / tender. EDIT: Until now (Feb 11) it seems that most posters agree that a fail of the project is basically a failure of the project management (whatever fail means). But IMHO it comes out, that most developers are not happy with this situation. Perhaps because not the manager get penalized when a project was not successful, but the lazy, incompetent developer teams? When I read the posts I can also hear-out that there is a big "gap" between the developer side and the managment side. The expectations (perhaps also the requirements) seem to be so different, that a project cannot be successful in the end (over time / budget; users are not happy; not all first-prio features implemented; too many bugs because developers were forced to implement in too short timeframes ...) I',m asking myself: How can we improve it? Or do we have the possibility to improve it? Everybody seems to be unsatisfied with the way it goes now. Can we close the gap between these two worlds? Should we (the developers) go on strike and fight for "high quality reqiurements" and "realistic / iteration based time shedules"? EDIT: Ralph Westphal and Stefan Lieser have founded a new "community" called: Clean-Code-Developer. The aim of the group is to bring more professionalism into software engineering. Independently if a developer has a degree or tons of years of experience you can be part of this movement. Clean Code Developers live principles like SOLID every day. A professional developer is the biggest reviewer of his own work. And he has an internal value system which helps him to improve and become better. Check it out on: Clean Code Developer EDIT: Our company is doing at the moment a thing called "Application Development and Maintenance Benchmarking". This is a service offered by IBM to get a feedback from someone external on your software engineering process quality etc. When we get the results, I will tell you more about it.

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  • C# - Alternative to System.Timers.Timer, to call a function at a specific time.

    - by Fábio Antunes
    Hello everybody. I want to call a specific function on my C# application at a specific time. At first i thought about using a Timer (System.Time.Timer), but that soon became impossible to use. Why? Simple. The Timer Class requires a Interval in milliseconds, but considering that i might want the function to be executed, lets says in a week that would mean: 7 Days = 168 hours; 168 Hours = 10,080 minutes; 10,080 Minutes = 6,048,000 seconds; 6,048,000 Seconds = 6,048,000,000 milliseconds; So the Interval would be 6,048,000,000; Now lets remember that the Interval accepted data type is int, and as we know int range goes from -2,147,483,648 to 2,147,483,647. That makes Timer useless in this case once we cannot set a Interval bigger that 2,147,483,647 milliseconds. So i need a solution where i could specify when the function should be called. Something like this: solution.ExecuteAt = "30-04-2010 15:10:00"; solution.Function = "functionName"; solution.Start(); So when the System Time would reach "30-04-2010 15:10:00" the function would be executed in the application. How can this problem be solved? Thanks just by taking the time to read my question. But if you could provide me with some help i would be most grateful. Additional Info: What these functions will do? Getting climate information and based on that info: Starting / Shutting down other Applications (most of them Console Based); Sending custom Commands to those Console Applications; Power down, Rebooting, Sleep, Hibernate the computer; And if possible schedule the BIOS to Power Up the Computer; EDIT: It would seem that the Interval accepted data type is double, however if you set a value bigger that an int to the Interval, and call Start() it throws a exception [0, Int32.MaxValue]. EDIT 2: Jørn Schou-Rode suggested using Ncron to handle the scheduling tasks, and at first look this seems a good solution, but i would like to hear about some who as worked with it.

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  • Word Spell Check pops up hidden and "freezes" my App

    - by Refracted Paladin
    I am using Word's Spell Check in my in house WinForm app. My clients are all XP machines with Office 2007 and randomly the spell check suggestion box pops up behind the App and makes everything "appear" frozen as you cannot get at it. Suggestions? What do other people do to work around this or stop it altogether? Thanks Below is my code, for reference, though I am doubtful that this has anything to do with my code but I'll take anything. public class SpellCheckers { public string CheckSpelling(string text) { Word.Application app = new Word.Application(); object nullobj = Missing.Value; object template = Missing.Value; object newTemplate = Missing.Value; object documentType = Missing.Value; object visible = false; object optional = Missing.Value; object savechanges = false; app.ShowMe(); Word._Document doc = app.Documents.Add(ref template, ref newTemplate, ref documentType, ref visible); doc.Words.First.InsertBefore(text); Word.ProofreadingErrors errors = doc.SpellingErrors; var ecount = errors.Count; doc.CheckSpelling(ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional, ref optional); object first = 0; object last = doc.Characters.Count - 1; var results = doc.Range(ref first, ref last).Text; doc.Close(ref savechanges, ref nullobj, ref nullobj); app.Quit(ref savechanges, ref nullobj, ref nullobj); Marshal.ReleaseComObject(doc); Marshal.ReleaseComObject(app); Marshal.ReleaseComObject(errors); return results; } } And I call it from my WinForm app like so -- public static void SpellCheckControl(Control control) { if (IsWord2007Available()) { if (control.HasChildren) { foreach (Control ctrl in control.Controls) { SpellCheckControl(ctrl); } } if (IsValidSpellCheckControl(control)) { if (control.Text != String.Empty) { control.BackColor = Color.FromArgb(180, 215, 195); control.Text = Spelling.CheckSpelling(control.Text); control.Text = control.Text.Replace("\r", "\r\n"); control.ResetBackColor(); } } } }

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  • Interesting issue with WCF wsHttpBinding through a Firewall

    - by Marko
    I have a web application deployed in an internet hosting provider. This web application consumes a WCF Service deployed at an IIS server located at my company’s application server, in order to have data access to the company’s database, the network guys allowed me to expose this WCF service through a firewall for security reasons. A diagram would look like this. [Hosted page] --- (Internet) --- |Firewall <Public IP>:<Port-X >| --- [IIS with WCF Service <Comp. Network Ip>:<Port-Y>] link text I also wanted to use wsHttpBinding to take advantage of its security features, and encrypt sensible information. After trying it out I get the following error: Exception Details: System.ServiceModel.EndpointNotFoundException: The message with To 'http://<IP>:<Port>/service/WCFService.svc' cannot be processed at the receiver, due to an AddressFilter mismatch at the EndpointDispatcher. Check that the sender and receiver's EndpointAddresses agree. Doing some research I found out that wsHttpBinding uses WS-Addressing standards, and reading about this standard I learned that the SOAP header is enhanced to include tags like ‘MessageID’, ‘ReplyTo’, ‘Action’ and ‘To’. So I’m guessing that, because the client application endpoint specifies the Firewall IP address and Port, and the service replies with its internal network address which is different from the Firewall’s IP, then WS-Addressing fires the above message. Which I think it’s a very good security measure, but it’s not quite useful in my scenario. Quoting the WS-Addressing standard submission (http://www.w3.org/Submission/ws-addressing/) "Due to the range of network technologies currently in wide-spread use (e.g., NAT, DHCP, firewalls), many deployments cannot assign a meaningful global URI to a given endpoint. To allow these ‘anonymous’ endpoints to initiate message exchange patterns and receive replies, WS-Addressing defines the following well-known URI for use by endpoints that cannot have a stable, resolvable URI. http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous" HOW can I configure my wsHttpBinding Endpoint to address my Firewall’s IP and to ignore or bypass the address specified in the ‘To’ WS-Addressing tag in the SOAP message header? Or do I have to change something in my service endpoint configuration? Help and guidance will be much appreciated. Marko. P.S.: While I find any solution to this, I’m using basicHttpBinding with absolutely no problem of course.

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  • [AS3/C#] Byte encryption ( DES-CBC zero pad )

    - by mark_dj
    Hi there, Currently writing my own AMF TcpSocketServer. Everything works good so far i can send and recieve objects and i use some serialization/deserialization code. Now i started working on the encryption code and i am not so familiar with this stuff. I work with bytes , is DES-CBC a good way to encrypt this stuff? Or are there other more performant/secure ways to send my data? Note that performance is a must :). When i call: ReadAmf3Object with the decrypter specified i get an: InvalidOperationException thrown by my ReadAmf3Object function when i read out the first byte the Amf3TypeCode isn't specified ( they range from 0 to 16 i believe (Bool, String, Int, DateTime, etc) ). I got Typecodes varying from 97 to 254? Anyone knows whats going wrong? I think it has something to do with the encryption part. Since the deserializer works fine w/o the encryption. I am using the right padding/mode/key? I used: http://code.google.com/p/as3crypto/ as as3 encryption/decryption library. And i wrote an Async tcp server with some abuse of the threadpool ;) Anyway here some code: C# crypter initalization code System.Security.Cryptography.DESCryptoServiceProvider crypter = new DESCryptoServiceProvider(); crypter.Padding = PaddingMode.Zeros; crypter.Mode = CipherMode.CBC; crypter.Key = Encoding.ASCII.GetBytes("TESTTEST"); AS3 private static var _KEY:ByteArray = Hex.toArray(Hex.fromString("TESTTEST")); private static var _TYPE:String = "des-cbc"; public static function encrypt(array:ByteArray):ByteArray { var pad:IPad = new NullPad; var mode:ICipher = Crypto.getCipher(_TYPE, _KEY, pad); pad.setBlockSize(mode.getBlockSize()); mode.encrypt(array); return array; } public static function decrypt(array:ByteArray):ByteArray { var pad:IPad = new NullPad; var mode:ICipher = Crypto.getCipher(_TYPE, _KEY, pad); pad.setBlockSize(mode.getBlockSize()); mode.decrypt(array); return array; } C# read/unserialize/decrypt code public override object Read(int length) { object d; using (MemoryStream stream = new MemoryStream()) { stream.Write(this._readBuffer, 0, length); stream.Position = 0; if (this.Decrypter != null) { using (CryptoStream c = new CryptoStream(stream, this.Decrypter, CryptoStreamMode.Read)) using (AmfReader reader = new AmfReader(c)) { d = reader.ReadAmf3Object(); } } else { using (AmfReader reader = new AmfReader(stream)) { d = reader.ReadAmf3Object(); } } } return d; }

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  • MVC2 Client validation with Annotations in View with RenderAction

    - by Olle
    I'm having problem with client side validation on a View that renders a dropdownlist with help of a Html.RenderAction. I have two controllers. SpecieController and CatchController and I've created ViewModels for my views. I want to keep it as DRY as possible and I will most probably need a DropDownList for all Specie elsewhere in the near future. When I create a Catch i need to set a relationship to one specie, I do this with an id that I get from the DropDownList of Species. ViewModels.Catch.Create [Required] public int Length { get; set; } [Required] public int Weight { get; set; } [Required] [Range(1, int.MaxValue)] public int SpecieId { get; set; } ViewModels.Specie.List public DropDownList(IEnumerable<SelectListItem> species) { this.Species = species; } public IEnumerable<SelectListItem> Species { get; private set; } My View for the Catch.Create action uses the ViewModels.Catch.Create as a model. But it feels that I'm missing something in the implemetation. What I want in my head is to connect the selected value in the DropDownList that comes from the RenderAction to my SpecieId. View.Catch.Create <div class="editor-label"> <%: Html.LabelFor(model => model.SpecieId) %> </div> <div class="editor-field"> <%-- Before DRY refactoring, works like I want but not DRY <%: Html.DropDownListFor(model => model.SpecieId, Model.Species) %> --%> <% Html.RenderAction("DropDownList", "Specie"); %> <%: Html.ValidationMessageFor(model => model.SpecieId) %> </div> CatchController.Create [HttpPost] public ActionResult Create(ViewModels.CatchModels.Create myCatch) { if (ModelState.IsValid) { // Can we make this StronglyTyped? int specieId = int.Parse(Request["Species"]); // Save to db Catch newCatch = new Catch(); newCatch.Length = myCatch.Length; newCatch.Weight = myCatch.Weight; newCatch.Specie = SpecieService.GetById(specieId); newCatch.User = UserService.GetUserByUsername(User.Identity.Name); CatchService.Save(newCatch); } This scenario works but not as smooth as i want. ClientSide validation does not work for SpecieId (after i refactored), I see why but don't know how I can ix it. Can I "glue" the DropDownList SelectedValue into myCatch so I don't need to get the value from Request["Species"] Thanks in advance for taking your time on this.

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  • PostgreSQL to Data-Warehouse: Best approach for near-real-time ETL / extraction of data

    - by belvoir
    Background: I have a PostgreSQL (v8.3) database that is heavily optimized for OLTP. I need to extract data from it on a semi real-time basis (some-one is bound to ask what semi real-time means and the answer is as frequently as I reasonably can but I will be pragmatic, as a benchmark lets say we are hoping for every 15min) and feed it into a data-warehouse. How much data? At peak times we are talking approx 80-100k rows per min hitting the OLTP side, off-peak this will drop significantly to 15-20k. The most frequently updated rows are ~64 bytes each but there are various tables etc so the data is quite diverse and can range up to 4000 bytes per row. The OLTP is active 24x5.5. Best Solution? From what I can piece together the most practical solution is as follows: Create a TRIGGER to write all DML activity to a rotating CSV log file Perform whatever transformations are required Use the native DW data pump tool to efficiently pump the transformed CSV into the DW Why this approach? TRIGGERS allow selective tables to be targeted rather than being system wide + output is configurable (i.e. into a CSV) and are relatively easy to write and deploy. SLONY uses similar approach and overhead is acceptable CSV easy and fast to transform Easy to pump CSV into the DW Alternatives considered .... Using native logging (http://www.postgresql.org/docs/8.3/static/runtime-config-logging.html). Problem with this is it looked very verbose relative to what I needed and was a little trickier to parse and transform. However it could be faster as I presume there is less overhead compared to a TRIGGER. Certainly it would make the admin easier as it is system wide but again, I don't need some of the tables (some are used for persistent storage of JMS messages which I do not want to log) Querying the data directly via an ETL tool such as Talend and pumping it into the DW ... problem is the OLTP schema would need tweaked to support this and that has many negative side-effects Using a tweaked/hacked SLONY - SLONY does a good job of logging and migrating changes to a slave so the conceptual framework is there but the proposed solution just seems easier and cleaner Using the WAL Has anyone done this before? Want to share your thoughts?

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  • Resizing QT's QTextEdit to Match Text Height: maximumViewportSize()

    - by Aaron
    I am trying to use a QTextEdit widget inside of a form containing several QT widgets. The form itself sits inside a QScrollArea that is the central widget for a window. My intent is that any necessary scrolling will take place in the main QScrollArea (rather than inside any widgets), and any widgets inside will automatically resize their height to hold their contents. I have tried to implement the automatic resizing of height with a QTextEdit, but have run into an odd issue. I created a sub-class of QTextEdit and reimplemented sizeHint() like this: QSize OperationEditor::sizeHint() const { QSize sizehint = QTextBrowser::sizeHint(); sizehint.setHeight(this->fitted_height); return sizehint; } this-fitted_height is kept up-to-date via this slot that is wired to the QTextEdit's "contentsChanged()" signal: void OperationEditor::fitHeightToDocument() { this->document()->setTextWidth(this->viewport()->width()); QSize document_size(this->document()->size().toSize()); this->fitted_height = document_size.height(); this->updateGeometry(); } The size policy of the QTextEdit sub-class is: this->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred); I took this approach after reading this post. Here is my problem: As the QTextEdit gradually resizes to fill the window, it stops getting larger and starts scrolling within the QTextEdit, no matter what height is returned from sizeHint(). If I initially have sizeHint() return some large constant number, then the QTextEdit is very big and is contained nicely within the outer QScrollArea, as one would expect. However, if sizeHint gradually adjusts the size of the QTextEdit rather than just making it really big to start, then it tops out when it fills the current window and starts scrolling instead of growing. I have traced this problem to be that, no matter what my sizeHint() returns, it will never resize the QTextEdit larger than the value returned from maximumViewportSize(), which is inherited from QAbstractScrollArea. Note that this is not the same number as viewport()-maximumSize(). I am unable to figure out how to set that value. Looking at QT's source code, maximumViewportSize() is returning "the size of the viewport as if the scroll bars had no valid scrolling range." This value is basically computed as the current size of the widget minus (2 * frameWidth + margins) plus any scrollbar widths/heights. This does not make a lot of sense to me, and it's not clear to me why that number would be used anywhere in a way that supercede's the sub-class's sizeHint() implementation. Also, it does seem odd that the single "frameWidth" integer is used in computing both the width and the height. Can anyone please shed some light on this? I suspect that my poor understanding of QT's layout engine is to blame here.

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  • Get non-overlapping dates ranges for prices history data

    - by Anonymouse
    Hello, Let's assume that I have the following table: CREATE TABLE [dbo].[PricesHist]( [Product] varchar NOT NULL, [Price] [float] NOT NULL, [StartDate] [datetime] NOT NULL, [EndDate] [datetime] NOT NULL ) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D2C00000000 AS DateTime), CAST(0x00009D2C00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D2D00000000 AS DateTime), CAST(0x00009D2D00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 2.5, CAST(0x00009D2E00000000 AS DateTime), CAST(0x00009D2E00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3000000000 AS DateTime), CAST(0x00009D3000000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3100000000 AS DateTime), CAST(0x00009D3100000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3400000000 AS DateTime), CAST(0x00009D3400000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 2.5, CAST(0x00009D3500000000 AS DateTime), CAST(0x00009D3500000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3600000000 AS DateTime), CAST(0x00009D3600000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3700000000 AS DateTime), CAST(0x00009D3700000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3800000000 AS DateTime), CAST(0x00009D3800000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3A00000000 AS DateTime), CAST(0x00009D3A00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3B00000000 AS DateTime), CAST(0x00009D3B00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 2.5, CAST(0x00009D3C00000000 AS DateTime), CAST(0x00009D3C00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3D00000000 AS DateTime), CAST(0x00009D3D00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3E00000000 AS DateTime), CAST(0x00009D3E00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D3F00000000 AS DateTime), CAST(0x00009D3F00000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D4100000000 AS DateTime), CAST(0x00009D4100000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D4200000000 AS DateTime), CAST(0x00009D4200000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 2.5, CAST(0x00009D4300000000 AS DateTime), CAST(0x00009D4300000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D4400000000 AS DateTime), CAST(0x00009D4400000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D4500000000 AS DateTime), CAST(0x00009D4500000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D4600000000 AS DateTime), CAST(0x00009D4600000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 4.9, CAST(0x00009D4800000000 AS DateTime), CAST(0x00009D4800000000 AS DateTime)) INSERT [dbo].[PricesHist] ([Product], [Price], [StartDate], [EndDate]) VALUES (N'Apples', 2.5, CAST(0x00009D4A00000000 AS DateTime), CAST(0x00009D4A00000000 AS DateTime)) As you can see, there are two prices on that month for Apples. 4.90 and 2.50. In order to tidy this table up, I need to get this information as a date range rather than a row per day as it currently is. I can obviously do this with Min and Max aggregates easily but the ranges overlap and other business code expect non-overlapping ranges. I also tried to achieve this with self joins and row_number(), but without much success... Here is what I'm trying to achieve as the output: Product | StartDate | EndDate | Price ------------------------------------------- Apples | 01 Mar 2010 | 02 Mar 2010 | 4.90 Apples | 03 Mar 2010 | 03 Mar 2010 | 2.50 Apples | 05 Mar 2010 | 09 Mar 2010 | 4.90 Apples | 10 Mar 2010 | 10 Mar 2010 | 2.50 Apples | 11 Mar 2010 | 16 Mar 2010 | 4.90 Apples | 17 Mar 2010 | 17 Mar 2010 | 2.50 Apples | 18 Mar 2010 | 23 Mar 2010 | 4.90 Apples | 24 Mar 2010 | 24 Mar 2010 | 2.50 Apples | 25 Mar 2010 | 30 Mar 2010 | 4.90 Apples | 31 Mar 2010 | 31 Mar 2010 | 2.50 What would please be the best approach to get this done? Thanks a lot in advance,

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  • Bugs in Excel's ActiveX combo boxes?

    - by k.robinson
    I have noticed that I get all sorts of annoying errors when: I have ActiveX comboboxes on a worksheet (not an excel form) The comboboxes have event code linked to them (eg, onchange events) I use their listfillrange or linkedcell properties (clearing these properties seems to alleviate a lot of problems) (Not sure if this is connected) but there is data validation on the targeted linkedcell. I program a fairly complex excel application that does a ton of event handling and uses a lot of controls. Over the months, I have been trying to deal with a variety of bugs dealing with those combo boxes. I can't recall all the details of each instance now, but these bugs tend to involve pointing the listfillrange and linkedcell properties at named ranges, and often have to do with the combo box events triggering at inappropriate times (such as when application.enableevents = false). These problems seemed to grow bigger in Excel 2007, so that I had to give up on these combo boxes entirely (I now use combo boxes contained in user forms, rather than directly on the sheets). Has anyone else seen similar problems? If so, was there a graceful solution? I have looked around with Google and so far haven't spotted anyone with similar issues. Some of the symptoms I end up seeing are: Excel crashing when I start up (involves combobox_onchange, listfillrange-named range on another different sheet, and workbook_open interactions). (note, I also had some data validation on the the linked cells in case a user edited them directly.) Excel rendering bugs (usually when the combo box changes, some cells from another sheet get randomly drawn over the top of the current sheet) Sometimes it involves the screen flashing entirely to another sheet for a moment. Excel losing its mind (or rather, the call stack) (related to the first bullet point). Sometimes when a function modifies a property of the comboboxes, the combobox onchange event fires, but it never returns control to the function that caused the change in the first place. The combobox_onchange events are triggered even when application.enableevents = false. Events firing when they shouldn't (I posted another question on stack overflow related to this). At this point, I am fairly convinced that ActiveX comboboxes are evil incarnate and not worth the trouble. I have switched to including these comboboxes inside a userform module instead. I would rather inconvenience users with popup forms than random visual artifacts and crashing (with data loss).

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  • Django Formset management-form validation error

    - by gramware
    I have a form and a formset on my template. The problem is that the formset is throwing validation error claiming that the management form is "missing or has been tampered with". Here is my view @login_required def home(request): user = UserProfile.objects.get(pk=request.session['_auth_user_id']) blogz = list(blog.objects.filter(deleted='0')) delblog = modelformset_factory(blog, exclude=('poster','date' ,'title','content')) if request.user.is_staff== True: staff = 1 else: staff = 0 staffis = 1 if request.method == 'POST': delblogformset = delblog(request.POST) if delblogformset.is_valid(): delblogformset.save() return HttpResponseRedirect('/home') else: delblogformset = delblog(queryset=blog.objects.filter( deleted='0')) blogform = BlogForm(request.POST) if blogform.is_valid(): blogform.save() return HttpResponseRedirect('/home') else: blogform = BlogForm(initial = {'poster':user.id}) blogs= zip(blogz,delblogformset.forms) paginator = Paginator(blogs, 10) # Show 25 contacts per page # Make sure page request is an int. If not, deliver first page. try: page = int(request.GET.get('page', '1')) except ValueError: page = 1 # If page request (9999) is out of range, deliver last page of results. try: blogs = paginator.page(page) except (EmptyPage, InvalidPage): blogs = paginator.page(paginator.num_pages) return render_to_response('home.html', {'user':user, 'blogform':blogform, 'staff': staff, 'staffis': staffis, 'blog':blogs, 'delblog':delblogformset}, context_instance = RequestContext( request )) my template {%block content%} <h2>Home</h2> {% ifequal staff staffis %} {% if form.errors %} <ul> {% for field in form %} <H3 class="title"> <p class="error"> {% if field.errors %}<li>{{ field.errors|striptags }}</li>{% endif %}</p> </H3> {% endfor %} </ul> {% endif %} <h3>Post a Blog to the Front Page</h3> <form method="post" id="form2" action="" class="infotabs accfrm"> {{ blogform.as_p }} <input type="submit" value="Submit" /> </form> <br> <br> {% endifequal %} <div class="pagination"> <span class="step-links"> {% if blog.has_previous %} <a href="?page={{ blog.previous_page_number }}">previous</a> {% endif %} <span class="current"> Page {{ blog.number }} of {{ blog.paginator.num_pages }}. </span> {% if blog.has_next %} <a href="?page={{ blog.next_page_number }}">next</a> {% endif %} </span> <form method="post" action="" class="usertabs accfrm"> {{delblog.management_form}} {% for b, form in blog.object_list %} <div class="blog"> <h3>{{b.title}}</h3> <p>{{b.content}}</p> <p>posted by <strong>{{b.poster}}</strong> on {{b.date}}</p> {% ifequal staff staffis %}<p>{{form.as_p}}<input type="submit" value="Delete" /></p>{% endifequal %} </div> {% endfor %} </form> {%endblock%}

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  • Asp.Net MVC Data Annotations. How to get client side validation on 2 properties being equal

    - by Mark
    How do you get client side validation on two properties such as the classic password confirm password scenario. I'm using a metadata class based on EF mapping to my DB table, heres the code. The commented out attributes on my class will get me server side validation but not client side. [MetadataType(typeof(MemberMD))] public partial class Member { //[CustomValidation(typeof(MemberMD), "Verify", ErrorMessage = "The password and confirmation password did not match.")] //[PropertiesMustMatch("Password", "ConfirmPassword", ErrorMessage = "The password and confirmation password did not match.")] public class MemberMD { [Required(ErrorMessage = "Name is required.")] [StringLength(50, ErrorMessage = "No more than 50 characters")] public object Name { get; set; } [Required(ErrorMessage = "Email is required.")] [StringLength(50, ErrorMessage = "No more than 50 characters.")] [RegularExpression(".+\\@.+\\..+", ErrorMessage = "Valid email required e.g. [email protected]")] public object Email { get; set; } [Required(ErrorMessage = "Password is required.")] [StringLength(30, ErrorMessage = "No more than 30 characters.")] [RegularExpression("[\\S]{6,}", ErrorMessage = "Must be at least 6 characters.")] public object Password { get; set; } [Required] public object ConfirmPassword { get; set; } [Range(0, 150), Required] public object Age { get; set; } [Required(ErrorMessage = "Postcode is required.")] [RegularExpression(@"^[a-zA-Z0-9 ]{1,10}$", ErrorMessage = "Postcode must be alphanumeric and no more than 10 characters in length")] public object Postcode { get; set; } [DisplayName("Security Question")] [Required] public object SecurityQuestion { get; set; } [DisplayName("Security Answer")] [Required] [StringLength(50, ErrorMessage = "No more than 50 characters.")] public object SecurityAnswer { get; set; } public static ValidationResult Verify(MemberMD t) { if (t.Password == t.ConfirmPassword) return ValidationResult.Success; else return new ValidationResult(""); } } Any help would be greatly appreciated, as I have only been doing this 5 months please try not to blow my mind.

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  • OperationalError "unable to open database file" processing query results with SQLAlchemy and SQLite3

    - by Peter
    I'm running into this little problem that I hope is just a dumb user error. It looks like some sort of a size limit with a query to a SQLite database. I managed to reproduce the issue with an in-memory DB and a simple script shown below. I can make it work by either reducing the number of records in the DB; or by reducing the size of each record; or by dropping the order_by() call. I am using Python 2.5.5 and SQLAlchemy 0.6.0 in a Cygwin environment. Thanks! #!/usr/bin/python from sqlalchemy.orm import sessionmaker import sqlalchemy import sqlalchemy.orm class Person(object): def __init__(self, name): self.name = name engine = sqlalchemy.create_engine('sqlite:///:memory:') Session = sessionmaker(bind=engine) metadata = sqlalchemy.schema.MetaData(bind=engine) person_table = sqlalchemy.Table('person', metadata, sqlalchemy.Column('id', sqlalchemy.types.Integer, primary_key=True), sqlalchemy.Column('name', sqlalchemy.types.String)) metadata.create_all(engine) sqlalchemy.orm.mapper(Person, person_table) session = Session() session.add_all([Person("012345678901234567890123456789012") for i in range(5000)]) session.commit() persons = session.query(Person).order_by(Person.name).all() print "count =", len(persons) session.close() The all() call to the query result fails with the OperationalError exception: Traceback (most recent call last): File "./stress.py", line 27, in <module> persons = session.query(Person).order_by(Person.name).all() File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/query.py", line 1343, in all return list(self) File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/query.py", line 1451, in __iter__ return self._execute_and_instances(context) File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/query.py", line 1456, in _execute_and_instances mapper=self._mapper_zero_or_none()) File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/session.py", line 737, in execute clause, params or {}) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1109, in execute return Connection.executors[c](self, object, multiparams, params) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1186, in _execute_clauseelement return self.__execute_context(context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1215, in __execute_context context.parameters[0], context=context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1284, in _cursor_execute self._handle_dbapi_exception(e, statement, parameters, cursor, context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1282, in _cursor_execute self.dialect.do_execute(cursor, statement, parameters, context=context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/default.py", line 277, in do_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (OperationalError) unable to open database file u'SELECT person.id AS person_id, person.name AS person_name \nFROM person ORDER BY person.name' ()

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  • getting rid of filesort on WordPress MySQL query

    - by Hans
    An instance of WordPress that I manage goes down about once a day due to this monster MySQL query taking far too long: SELECT SQL_CALC_FOUND_ROWS distinct wp_posts.* FROM wp_posts LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) LEFT JOIN wp_term_taxonomy ON wp_term_taxonomy.term_taxonomy_id = wp_term_relationships.term_taxonomy_id LEFT JOIN wp_ec3_schedule ec3_sch ON ec3_sch.post_id=id WHERE 1=1 AND wp_posts.ID NOT IN ( SELECT tr.object_id FROM wp_term_relationships AS tr INNER JOIN wp_term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tt.taxonomy = 'category' AND tt.term_id IN ('1050') ) AND wp_posts.post_type = 'post' AND (wp_posts.post_status = 'publish') AND NOT EXISTS (SELECT * FROM wp_term_relationships JOIN wp_term_taxonomy ON wp_term_taxonomy.term_taxonomy_id = wp_term_relationships.term_taxonomy_id WHERE wp_term_relationships.object_id = wp_posts.ID AND wp_term_taxonomy.taxonomy = 'category' AND wp_term_taxonomy.term_id IN (533,3567) ) AND ec3_sch.post_id IS NULL GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT 0, 10; What do I have to do to get rid of the very slow filesort? I would think that the multicolumn type_status_date index would be fast enough. The EXPLAIN EXTENDED output is below. +----+--------------------+-----------------------+--------+-----------------------------------+------------------+---------+---------------------------------------------------------------------------------+------+----------------------------------------------+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +----+--------------------+-----------------------+--------+-----------------------------------+------------------+---------+---------------------------------------------------------------------------------+------+----------------------------------------------+ | 1 | PRIMARY | wp_posts | ref | type_status_date | type_status_date | 124 | const,const | 7034 | Using where; Using temporary; Using filesort | | 1 | PRIMARY | wp_term_relationships | ref | PRIMARY | PRIMARY | 8 | bwog_wordpress_w.wp_posts.ID | 373 | Using index | | 1 | PRIMARY | wp_term_taxonomy | eq_ref | PRIMARY | PRIMARY | 8 | bwog_wordpress_w.wp_term_relationships.term_taxonomy_id | 1 | Using index | | 1 | PRIMARY | ec3_sch | ref | post_id_index | post_id_index | 9 | bwog_wordpress_w.wp_posts.ID | 1 | Using where; Using index | | 3 | DEPENDENT SUBQUERY | wp_term_taxonomy | range | PRIMARY,term_id_taxonomy,taxonomy | term_id_taxonomy | 106 | NULL | 2 | Using where | | 3 | DEPENDENT SUBQUERY | wp_term_relationships | eq_ref | PRIMARY,term_taxonomy_id | PRIMARY | 16 | bwog_wordpress_w.wp_posts.ID,bwog_wordpress_w.wp_term_taxonomy.term_taxonomy_id | 1 | Using index | | 2 | DEPENDENT SUBQUERY | tt | const | PRIMARY,term_id_taxonomy,taxonomy | term_id_taxonomy | 106 | const,const | 1 | | | 2 | DEPENDENT SUBQUERY | tr | eq_ref | PRIMARY,term_taxonomy_id | PRIMARY | 16 | func,const | 1 | Using index | +----+--------------------+-----------------------+--------+-----------------------------------+------------------+---------+---------------------------------------------------------------------------------+------+----------------------------------------------+ 8 rows in set, 2 warnings (0.05 sec) And CREATE TABLE: CREATE TABLE `wp_posts` ( `ID` bigint(20) unsigned NOT NULL auto_increment, `post_author` bigint(20) unsigned NOT NULL default '0', `post_date` datetime NOT NULL default '0000-00-00 00:00:00', `post_date_gmt` datetime NOT NULL default '0000-00-00 00:00:00', `post_content` longtext NOT NULL, `post_title` text NOT NULL, `post_excerpt` text NOT NULL, `post_status` varchar(20) NOT NULL default 'publish', `comment_status` varchar(20) NOT NULL default 'open', `ping_status` varchar(20) NOT NULL default 'open', `post_password` varchar(20) NOT NULL default '', `post_name` varchar(200) NOT NULL default '', `to_ping` text NOT NULL, `pinged` text NOT NULL, `post_modified` datetime NOT NULL default '0000-00-00 00:00:00', `post_modified_gmt` datetime NOT NULL default '0000-00-00 00:00:00', `post_content_filtered` text NOT NULL, `post_parent` bigint(20) unsigned NOT NULL default '0', `guid` varchar(255) NOT NULL default '', `menu_order` int(11) NOT NULL default '0', `post_type` varchar(20) NOT NULL default 'post', `post_mime_type` varchar(100) NOT NULL default '', `comment_count` bigint(20) NOT NULL default '0', `robotsmeta` varchar(64) default NULL, PRIMARY KEY (`ID`), KEY `post_name` (`post_name`), KEY `type_status_date` (`post_type`,`post_status`,`post_date`,`ID`), KEY `post_parent` (`post_parent`), KEY `post_date` (`post_date`), FULLTEXT KEY `post_related` (`post_title`,`post_content`) )

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  • Matching blank entries in django queryset for optional field with corresponding ones in a required

    - by gramware
    I have a django queryset in my views whose values I pack before passing to my template. There is a problem when the queryset returns none since associated values are not unpacked. the quersyet is called comments. Here is my views.py def forums(request ): post_list = list(forum.objects.filter(child='0')&forum.objects.filter(deleted='0').order_by('postDate')) user = UserProfile.objects.get(pk=request.session['_auth_user_id']) newpostform = PostForm(request.POST) deletepostform = PostDeleteForm(request.POST) DelPostFormSet = modelformset_factory(forum, exclude=('child','postSubject','postBody','postPoster','postDate','childParentId')) readform = ReadForumForm(request.POST) comments =list( forum.objects.filter(deleted='0').filter(child='1').order_by('childParentId').values('childParentId').annotate(y=Count('childParentId'))) if request.user.is_staff== True : staff = 1 else: staff = 0 staffis = 1 if newpostform.is_valid(): topic = request.POST['postSubject'] poster = request.POST['postPoster'] newpostform.save() return HttpResponseRedirect('/forums') else: newpostform = PostForm(initial = {'postPoster':user.id}) if request.GET: form = SearchForm(request.GET) if form.is_valid(): query = form.cleaned_data['query'] post_list = list((forum.objects.filter(child='0')&forum.objects.filter(deleted='0')&forum.objects.filter(Q(postSubject__icontains=query)|Q(postBody__icontains=query)|Q(postDate__icontains=query)))or(forum.objects.filter(deleted='0')&forum.objects.filter(Q(postSubject__icontains=query)|Q(postBody__icontains=query)|Q(postDate__icontains=query)).values('childParentId'))) if request.method == 'POST': delpostformset = DelPostFormSet(request.POST) if delpostformset.is_valid(): delpostformset.save() return HttpResponseRedirect('/forums') else: delpostformset = DelPostFormSet(queryset=forum.objects.filter(child='0', deleted='0')) """if readform.is_valid(): user=get_object_or_404(UserProfile.objects.all()) readform.save() else: readform = ReadForumForm()""" post= zip( post_list,comments, delpostformset.forms) paginator = Paginator(post, 10) # Show 10 contacts per page # Make sure page request is an int. If not, deliver first page. try: page = int(request.GET.get('page', '1')) except ValueError: page = 1 # If page request (9999) is out of range, deliver last page of results. try: post = paginator.page(page) except (EmptyPage, InvalidPage): post = paginator.page(paginator.num_pages) return render_to_response('forum.html', {'post':post, 'newpostform': newpostform,'delpost':delpostformset, 'username':user.username, 'comments':comments, 'user':user, },context_instance = RequestContext( request )) I realised that the issue was with the comments queryset comments =list( forum.objects.filter(deleted='0').filter(child='1').order_by('childParentId').values('childParentId').annotate(y=Count('childParentId'))) which will only returns values for posts that have comments. so i now need a way to return 0 comments when a value in post-list post_list = list(forum.objects.filter(child='0')&forum.objects.filter(deleted='0').order_by('postDate')) does not have any comments (optional field). Here is my models.py class forum(models.Model): postID = models.AutoField(primary_key=True) postSubject = models.CharField(max_length=100) postBody = models.TextField() postPoster = models.ForeignKey(UserProfile) postDate = models.DateTimeField(auto_now_add=True) child = models.BooleanField() childParentId = models.ForeignKey('self',blank=True, null=True) deleted = models.BooleanField() def __unicode__(self): return u' %d' % ( self.postID)

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  • Memory allocation problem with SVMs in OpenCV

    - by worksintheory
    Hi, I've been using OpenCV happily for a while, but now I have a problem which has bugged me for quite some time. The following code is reasonably minimal example of my problem: #include <cv.h> #include <ml.h> using namespace cv; int main(int argc, char **argv) { int sampleCountForTesting = 2731; //BROKEN: Breaks svm.train_auto(...) for values of 2731 or greater! Mat trainingData( sampleCountForTesting, 1, CV_32FC1, Scalar::all(0.0) ); Mat trainingResponses( sampleCountForTesting, 1, CV_32FC1, Scalar::all(0.0) ); for(int j = 0; j < 6; j++) { trainingData.at<float>( j, 0 ) = (float) (j%2); trainingResponses.at<float>( j, 0 ) = (float) (j%2); //Setting a few values so I don't get a "single class" error } CvSVMParams svmParams( 100, //100 is CvSVM::C_SVC, 2, //2 is CvSVM::RBF, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, NULL, TermCriteria( TermCriteria::MAX_ITER | TermCriteria::EPS, 2, 1.0 ) ); CvSVM svm = CvSVM(); svm.train_auto( trainingData, trainingResponses, Mat(), Mat(), svmParams ); return 0; } I just create matrices to hold the training data and responses, then set a few entries to some value other than zero, then run the SVM. But it breaks whenever there are 2731 rows or more: OpenCV Error: One of arguments' values is out of range (requested size is negative or too big) in cvMemStorageAlloc, file [omitted]/opencv/OpenCV-2.2.0/modules/core/src/datastructs.cpp, line 332 With fewer rows, it seems to be fine and a classifier trained in a similar manner to the above seems to be giving reasonable output. Am I doing something wrong? I'm pretty sure it's not actually anything to do with lack of memory, as I've got 6GB and also the code works fine when the data has 2730 rows and 10000 columns, which is a much bigger allocation. I'm running OpenCV 2.2 on OSX 10.6 and initially I thought the problem might be related to this bug if for some reason the fix wasn't included in the MacPorts version. Now I've also tried downloading the most recent stable version from the OpenCV site and building with cmake and using that, but I still get the same error, and the fix is definitely included in that version. Any help would be much appreciated! Thanks,

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  • WinForms Menu Toolstrip Get Status

    - by Yeti
    So I have a project where there is some automatic initialization going on through some classes that are created automatically as global variables (yeah they are static instances). At a point inside this (it has no relation with the C# GUI for the user, so it isn't derived from any C# class) I need to see if a flag is set or not. I use toolstrip menu with checked and unchecked status in order to set or unset the flag. The problem is that I have difficulties to see if the flag is checked or not from this static class. My class is inside a different project/namespace and a DLL is created what later is linked to the GUI of the application. The GUI depends from this Manager class so making the Manager class to depend from the GUI is not an option. Nevertheless, I should be able to see its state knowing its name or through some other means. I have tried the following: if(Application.OpenForms[1].Owner.Controls["useLocalImageForInitToolStripMenuItem"].Enabled) { }; Now the problem is that on the upper code snippet I get a nasty error. So how do I do this? The toolstrip menu: The error: See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ***** Exception Text ******* System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index at System.Collections.ArrayList.get_Item(Int32 index) at System.Windows.Forms.FormCollection.get_Item(Int32 index) at Manager.MyMainManager.MyMainManager.RealTimeInit() in C:\Dropbox\My Dropbox\Public\Program Code\RoboCup\Manager\MyMainManager\MyMainManager.cs:line 494 at mainApp.MainForm.ButtonInitClick(Object sender, EventArgs e) in C:\Dropbox\My Dropbox\Public\Program Code\RoboCup\mainApp\MainForm.cs:line 389 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

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  • The Skyline Problem.

    - by zeroDivisible
    I just came across this little problem on UVA's Online Judge and thought, that it may be a good candidate for a little code-golf. The problem: You are to design a program to assist an architect in drawing the skyline of a city given the locations of the buildings in the city. To make the problem tractable, all buildings are rectangular in shape and they share a common bottom (the city they are built in is very flat). The city is also viewed as two-dimensional. A building is specified by an ordered triple (Li, Hi, Ri) where Li and Ri are left and right coordinates, respectively, of building i and Hi is the height of the building. In the diagram below buildings are shown on the left with triples (1,11,5), (2,6,7), (3,13,9), (12,7,16), (14,3,25), (19,18,22), (23,13,29), (24,4,28) and the skyline, shown on the right, is represented by the sequence: 1, 11, 3, 13, 9, 0, 12, 7, 16, 3, 19, 18, 22, 3, 23, 13, 29, 0 The output should consist of the vector that describes the skyline as shown in the example above. In the skyline vector (v1, v2, v3, ... vn) , the vi such that i is an even number represent a horizontal line (height). The vi such that i is an odd number represent a vertical line (x-coordinate). The skyline vector should represent the "path" taken, for example, by a bug starting at the minimum x-coordinate and traveling horizontally and vertically over all the lines that define the skyline. Thus the last entry in the skyline vector will be a 0. The coordinates must be separated by a blank space. If I will not count declaration of provided (test) buildings and including all spaces and tab characters, my solution, in Python, is 223 characters long. Here is the condensed version: B=[[1,11,5],[2,6,7],[3,13,9],[12,7,16],[14,3,25],[19,18,22],[23,13,29],[24,4,28]] # Solution. R=range v=[0 for e in R(max([y[2] for y in B])+1)] for b in B: for x in R(b[0], b[2]): if b[1]>v[x]: v[x]=b[1] p=1 k=0 for x in R(len(v)): V=v[x] if p and V==0: continue elif V!=k: p=0 print "%s %s" % (str(x), str(V)), k=V I think that I didn't made any mistake but if so - feel free to criticize me. EDIT I don't have much reputation, so I will pay only 100 for a bounty - I am curious, if anyone could try to solve this in less than .. lets say, 80 characters. Solution posted by cobbal is 101 characters long and currently it is the best one. ANOTHER EDIT I thought, that 80 characters is a sick limit for this kind of problem. cobbal, with his 46 character solution totaly amazed me - though I must admit, that I spent some time reading his explanation before I partially understood what he had written.

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  • Color Theory: How to convert Munsell HVC to RGB/HSB/HSL

    - by Ian Boyd
    I'm looking at at document that describes the standard colors used in dentistry to describe the color of a tooth. They quote hue, value, chroma values, and indicate they are from the 1905 Munsell description of color: The system of colour notation developed by A. H. Munsell in 1905 identifies colour in terms of three attributes: HUE, VALUE (Brightness) and CHROMA (saturation) [15] HUE (H): Munsell defined hue as the quality by which we distinguish one colour from another. He selected five principle colours: red, yellow, green, blue, and purple; and five intermediate colours: yellow-red, green-yellow, blue-green, purple-blue, and red-purple. These were placed around a colour circle at equal points and the colours in between these points are a mixture of the two, in favour of the nearer point/colour (see Fig 1.). VALUE (V): This notation indicates the lightness or darkness of a colour in relation to a neutral grey scale, which extends from absolute black (value symbol 0) to absolute white (value symbol 10). This is essentially how ‘bright’ the colour is. CHROMA (C): This indicates the degree of divergence of a given hue from a neutral grey of the same value. The scale of chroma extends from 0 for a neutral grey to 10, 12, 14 or farther, depending upon the strength (saturation) of the sample to be evaluated. There are various systems for categorising colour, the Vita system is most commonly used in Dentistry. This uses the letters A, B, C and D to notate the hue (colour) of the tooth. The chroma and value are both indicated by a value from 1 to 4. A1 being lighter than A4, but A4 being more saturated than A1. If placed in order of value, i.e. brightness, the order from brightest to darkest would be: A1, B1, B2, A2, A3, D2, C1, B3, D3, D4, A3.5, B4, C2, A4, C3, C4 The exact values of Hue, Value and Chroma for each of the shades is shown below (16) So my question is, can anyone convert Munsell HVC into RGB, HSB or HSL? Hue Value (Brightness) Chroma(Saturation) === ================== ================== 4.5 7.80 1.7 2.4 7.45 2.6 1.3 7.40 2.9 1.6 7.05 3.2 1.6 6.70 3.1 5.1 7.75 1.6 4.3 7.50 2.2 2.3 7.25 3.2 2.4 7.00 3.2 4.3 7.30 1.6 2.8 6.90 2.3 2.6 6.70 2.3 1.6 6.30 2.9 3.0 7.35 1.8 1.8 7.10 2.3 3.7 7.05 2.4 They say that Value(Brightness) varies from 0..10, which is fine. So i take 7.05 to mean 70.5%. But what is Hue measured in? i'm used to hue being measured in degrees (0..360). But the values i see would all be red - when they should be more yellow, or brown. Finally, it says that Choma/Saturation can range from 0..10 ...or even higher - which makes it sound like an arbitrary scale. So can anyone convert Munsell HVC to HSB or HSL, or better yet, RGB?

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  • exception occured in java compiler

    - by user2892977
    I am a beginner in Java.I have JDK1.7.0 installed on windows 7 OS.I just wrote a sample java file where the file was not getting compiled and throws the below error. Sam.java:5: ';' expected Sample p = New Sample(); An exception has occurred in the compile r (1.7.0-ea). Please file a bug at the Java Developer Connection (http://java.su n.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you. java.lang.StringIndexOutOfBoundsException: String index out of range: 26 at java.lang.String.charAt(String.java:694) at com.sun.tools.javac.util.Log.printErrLine(Log.java:251) at com.sun.tools.javac.util.Log.writeDiagnostic(Log.java:343) at com.sun.tools.javac.util.Log.report(Log.java:315) at com.sun.tools.javac.util.AbstractLog.error(AbstractLog.java:96) at com.sun.tools.javac.parser.Parser.reportSyntaxError(Parser.java:295) at com.sun.tools.javac.parser.Parser.accept(Parser.java:326) at com.sun.tools.javac.parser.Parser.blockStatements(Parser.java:1599) at com.sun.tools.javac.parser.Parser.block(Parser.java:1500) at com.sun.tools.javac.parser.Parser.block(Parser.java:1514) at com.sun.tools.javac.parser.Parser.methodDeclaratorRest(Parser.java:25 69) at com.sun.tools.javac.parser.Parser.classOrInterfaceBodyDeclaration(Par ser.java:2518) at com.sun.tools.javac.parser.Parser.classOrInterfaceBody(Parser.java:24 45) at com.sun.tools.javac.parser.Parser.classDeclaration(Parser.java:2290) at com.sun.tools.javac.parser.Parser.classOrInterfaceOrEnumDeclaration(P arser.java:2228) at com.sun.tools.javac.parser.Parser.typeDeclaration(Parser.java:2217) at com.sun.tools.javac.parser.Parser.compilationUnit(Parser.java:2163) at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:530) at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:571) at com.sun.tools.javac.main.JavaCompiler.parseFiles(JavaCompiler.java:82 2) at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:748) at com.sun.tools.javac.main.Main.compile(Main.java:386) at com.sun.tools.javac.main.Main.compile(Main.java:312) at com.sun.tools.javac.main.Main.compile(Main.java:303) at com.sun.tools.javac.Main.compile(Main.java:82) at com.sun.tools.javac.Main.main(Main.java:67) Below is the code for Sam.java file class sam { public static void main(String args[]) { Sample p = New Sample(); p.show(); p.display(); } } I researched in google with the various compiler options but that did not help.I would like to understand the below errors. 1 - Sam.java:5: ';' expected 2 - An exception has occurred in the compiler (1.7.0-ea)

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  • Reconstructing Position in the Original Array from the Position in a Stripped Down Array

    - by aronchick
    I have a text file that contains a number of the following: <ID> <Time 1> --> <Time 2> <Quote (potentially multiple line> <New Line Separator> <ID> <Time 1> --> <Time 2> <Quote (potentially multiple line> <New Line Separator> <ID> <Time 1> --> <Time 2> <Quote (potentially multiple line> <New Line Separator> I have a very simple regex for stripping these out into a constant block so it's just: <Quote> <Quote> <Quote> What I'd like to do is present the quotes as a block to the user, and have them select it (using jQuery.fieldSelection) and then use the selected content to back out to the original array, so I can get timing and IDs. Because this has to go out to HTML, and the user has to be able to select the text on the screen, I can't do anything like hidden divs or hidden input fields. The only data I will have is the character range selected on screen. To be specific, this is what it looks like: 1 0:00 --> 0:05 He was bored. So bored. His great intellect, seemingly inexhaustible, was hungry for new challenges but he was the last of the great innovators 2 0:05 --> 0:10 - society's problems had all been solved. 3 0:11 --> 0:20 All seemingly unconnected disciplines had long since been found to be related in horrifically elusive and contrived ways and he had mastered them all. And this is what I'd like to present to the user for selection: He was bored. So bored. His great intellect, seemingly inexhaustible, was hungry for new challenges but he was the last of the great innovators - society's problems had all been solved. All seemingly unconnected disciplines had long since been found to be related in horrifically elusive and contrived ways and he had mastered them all. Has anyone com across something like this before? Any ideas how to take the selected text, or selection position, and go backwards to the original meta-data?

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