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  • What does transaction.commit() do when the flushmode is set manual in Hibernate?

    - by wei
    Here is a block of code in the Java Persistence with Hibernate book by Christian and Gavin, Session session = getSessionFactory().openSession(); session.setFlushMode(FlushMode.MANUAL); // First step in the conversation session.beginTransaction(); Item item = (Item) session.get(Item.class, new Long(123) ); session.getTransaction().commit(); // Second step in the conversation session.beginTransaction(); Item newItem = new Item(); Long newId = (Long) session.save(newItem); // Triggers INSERT! session.getTransaction().commit(); // Roll back the conversation! session.close();//enter code here I am confused that why the first step and second step need to be wrapped into two separate transactions? Since the flushmode is set manual here, no operations (suppose we ignore the insert here) will hit the database anyway. So why bother with transactions here? thanks

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  • Installing Office Customization

    - by user187229
    Name: From: file:///D:/Samples/TestUpdatedVersion/bin/Debug/TestUpdatedVersion.vsto The customization cannot be installed because another version is currently installed and cannot be upgraded from this location. To install this version of the customization, first use Add or Remove Programs to uninstall this program: TestUpdatedVersion. Then install the new customization from the following location: file:///D:/Samples/TestUpdatedVersion/bin/Debug/TestUpdatedVersion.vsto ********** Exception Text ********** Microsoft.VisualStudio.Tools.Applications.Deployment.AddInAlreadyInstalledException: The customization cannot be installed because another version is currently installed and cannot be upgraded from this location. To install this version of the customization, first use Add or Remove Programs to uninstall this program: TestUpdatedVersion. Then install the new customization from the following location: file:///D:/Samples/TestUpdatedVersion/bin/Debug/TestUpdatedVersion.vsto at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.VerifySolutionCodebaseIsUnchanged(Uri uri, String subscriptionId, Boolean previouslyInstalled) at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn()

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  • LazyInitializationException when adding to a list that is held within a entity class using hibernate

    - by molleman
    Right so i am working with hibernate gilead and gwt to persist my data on users and files of a website. my users have a list of file locations. i am using annotations to map my classes to the database. i am getting a org.hibernate.LazyInitializationException when i try to add file locations to the list that is held in the user class. this is a method below that is overridden from a external file upload servlet class that i am using. when the file uploads it calls this method. the user1 is loaded from the database elsewhere. the exception occurs at user1.getFileLocations().add(fileLocation); . i dont understand it really at all.! any help would be great. the stack trace of the error is below public String executeAction(HttpServletRequest request, List<FileItem> sessionFiles) throws UploadActionException { for (FileItem item : sessionFiles) { if (false == item.isFormField()) { try { YFUser user1 = (YFUser)getSession().getAttribute(SESSION_USER); // This is the location where a file will be stored String fileLocationString = "/Users/Stefano/Desktop/UploadedFiles/" + user1.getUsername(); File fl = new File(fileLocationString); fl.mkdir(); // so here i will create the a file container for my uploaded file File file = File.createTempFile("upload-", ".bin",fl); // this is where the file is written to disk item.write(file); // the FileLocation object is then created FileLocation fileLocation = new FileLocation(); fileLocation.setLocation(fileLocationString); //test System.out.println("file path = "+file.getPath()); user1.getFileLocations().add(fileLocation); //the line above is where the exception occurs } catch (Exception e) { throw new UploadActionException(e.getMessage()); } } removeSessionFileItems(request); } return null; } //This is the class file for a Your Files User @Entity @Table(name = "yf_user_table") public class YFUser implements Serializable,ILightEntity { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "user_id",nullable = false) private int userId; @Column(name = "username") private String username; @Column(name = "password") private String password; @Column(name = "email") private String email; @ManyToMany(cascade = CascadeType.ALL) @JoinTable(name = "USER_FILELOCATION", joinColumns = { @JoinColumn(name = "user_id") }, inverseJoinColumns = { @JoinColumn(name = "locationId") }) private List<FileLocation> fileLocations = new ArrayList<FileLocation>() ; public YFUser(){ } public int getUserId() { return userId; } private void setUserId(int userId) { this.userId = userId; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public List<FileLocation> getFileLocations() { if(fileLocations ==null){ fileLocations = new ArrayList<FileLocation>(); } return fileLocations; } public void setFileLocations(List<FileLocation> fileLocations) { this.fileLocations = fileLocations; } /* public void addFileLocation(FileLocation location){ fileLocations.add(location); }*/ @Override public void addProxyInformation(String property, Object proxyInfo) { // TODO Auto-generated method stub } @Override public String getDebugString() { // TODO Auto-generated method stub return null; } @Override public Object getProxyInformation(String property) { // TODO Auto-generated method stub return null; } @Override public boolean isInitialized(String property) { // TODO Auto-generated method stub return false; } @Override public void removeProxyInformation(String property) { // TODO Auto-generated method stub } @Override public void setInitialized(String property, boolean initialised) { // TODO Auto-generated method stub } @Override public Object getValue() { // TODO Auto-generated method stub return null; } } @Entity @Table(name = "fileLocationTable") public class FileLocation implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "locationId", updatable = false, nullable = false) private int ieId; @Column (name = "location") private String location; public FileLocation(){ } public int getIeId() { return ieId; } private void setIeId(int ieId) { this.ieId = ieId; } public String getLocation() { return location; } public void setLocation(String location) { this.location = location; } } Apr 2, 2010 11:33:12 PM org.hibernate.LazyInitializationException <init> SEVERE: failed to lazily initialize a collection of role: com.example.client.YFUser.fileLocations, no session or session was closed org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.example.client.YFUser.fileLocations, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:380) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:372) at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:365) at org.hibernate.collection.AbstractPersistentCollection.write(AbstractPersistentCollection.java:205) at org.hibernate.collection.PersistentBag.add(PersistentBag.java:297) at com.example.server.TestServiceImpl.saveFileLocation(TestServiceImpl.java:132) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at net.sf.gilead.gwt.PersistentRemoteService.processCall(PersistentRemoteService.java:174) at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224) at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) at javax.servlet.http.HttpServlet.service(HttpServlet.java:713) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488) Apr 2, 2010 11:33:12 PM net.sf.gilead.core.PersistentBeanManager clonePojo INFO: Third party instance, not cloned : org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.example.client.YFUser.fileLocations, no session or session was closed

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  • dllimport C++ DLL In VB.net

    - by JFLow
    Hi Experts out there, I'm stuck at dll imports with the c++ dll and i really need help to get over this. Here is the function in the c++ dll that i want to call from my VB.net code. bool LoadNewTestPlan(const char* szPlanFileName=" "); I've tried many ways in my VB.net but always getting the error : "Attempted to read or write protected memory. This is often an indication that other memory is corrupt." I have tried passing in byte(), Marshalling with LPStr, SafeArray and nothing works. Here is the example of my code code within the module <DllImport("HPVKIfc.dll", EntryPoint:="?LoadNewTestPlan@HPVKIfc@@QAE_NPBD@Z", CharSet:=CharSet.Ansi)> _ Public Function LoadNewTestPlan(<MarshalAs(UnmanagedType.LPStr)> ByVal pln As String) As Boolean End Function Do you see anything wrong? Thanks in advance.

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  • Best way of implementing a batch like operation in a RESTful architecture?

    - by Nirav
    Hello, We have a predominantly RESTful architecture for our product. This enables us to nicely implement almost all of the required functionality, except this new requirement thats come in. I need to implement a page which lets the user to large scale DB operations synchronously. They can stop the operation in between, if they realized they made a mistake (rather than waiting for it to complete and doing an undo operation) I was wondering if some one could give some pointers as to what would be the best way to implement such a functionality? Cheers! Nirav

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  • Why is the unit test useful when the view is not unit testable in MVVM?

    - by BigTiger
    Why is the unit test useful when the view is not unit testable in MVVM? In MVVM, we have the models, view-models, and views. The claimed advantage is that MVVM can make the models and view=models unit testable. But all the three parties belong to the same application. If the views are not unit testable, why test the other two? Will unit testing the other two and leave one not tested improve the quality? Removing all the code-behind from the views sounds weird to me. How about the code-behind only handles the pure UI operations?

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  • Looking for calculator source code, BSD-licensed

    - by Horace Ho
    I have an urgent project which need many functions of a calculator (plus a few in-house business rule formulas). As I won't have time to re-invent the wheel so I am looking for source code directly. Requirements: BSD licensed (GPL won't help) in c/c++ programming language 32-bit CPU minimum dependency on platform API/data structure best with both RPN and prefix notation supported emulator/simulator code also acceptable (if not impossible to add custom formula) with following functions (from wikipedia) Scientific notation for calculating large numbers floating point arithmetic logarithmic functions, using both base 10 and base e trigonometry functions (some including hyperbolic trigonometry) exponents and roots beyond the square root quick access to constants such as pi and e plus hexadecimal, binary, and octal calculations, including basic Boolean math fractions optional statistics and probability calculations complex numbers programmability equation solving

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  • Howto add a changed file to an older (not last) commit in Git

    - by David Klein
    Hey, I changed several things over the last hour and committed them step by step. But I just realized I've forgot to add a changed file some commits ago. The Log looks like this: GIT TidyUpRequests u:1 d:0> git log commit fc6734b6351f6c36a587dba6dbd9d5efa30c09ce Author: David Klein <> Date: Tue Apr 27 09:43:55 2010 +0200 The Main program now tests both Webservices at once commit 8a2c6014c2b035e37aebd310a6393a1ecb39f463 Author: David Klein <> Date: Tue Apr 27 09:43:27 2010 +0200 ISBNDBQueryHandler now uses the XPath functions from XPath.fs too commit 06a504e277fd98d97eed4dad22dfa5933d81451f Author: David Klein <> Date: Tue Apr 27 09:30:34 2010 +0200 AmazonQueryHandler now uses the XPath Helper functions defined in XPath.fs commit a0865e28be35a3011d0b6091819ec32922dd2dd8 <--- changed file should go here Author: David Klein <> Date: Tue Apr 27 09:29:53 2010 +0200 Factored out some common XPath Operations Any ideas? :)

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  • Java :Interface for this code

    - by ibrahim
    Please i neeed help to make interface for this code: package com.ejada.alinma.edh.xsdtransform; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.StringWriter; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.Iterator; import java.util.Properties; import java.util.StringTokenizer; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.transform.Result; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; /*import org.apache.log4j.Logger;*/ import org.apache.log4j.PropertyConfigurator; import org.w3c.dom.Document; import org.w3c.dom.DocumentFragment; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import com.sun.org.apache.xml.internal.serialize.OutputFormat; import com.sun.org.apache.xml.internal.serialize.XMLSerializer; /** * An XSD Transformer that replaces the "name" attribute's value in T24 XSDs * with the "shortname" attribute's value * * @author ahusseiny * */ public class XSDTransformer { /** * constants representing the XSD tags and attributes' names used in the parse process */ public static final String TAG_SCHEMA = "xsd:schema"; public static final String TAG_TEXT = "#text"; public static final String TAG_COMPLEX_TYPE = "xsd:complexType"; public static final String TAG_SIMPLE_TYPE = "xsd:simpleType"; public static final String TAG_SEQUENCE = "xsd:sequence"; public static final String TAG_ATTRIBUTE = "xsd:attribute"; public static final String TAG_ELEMENT = "xsd:element"; public static final String TAG_ANNOTATION = "xsd:annotation"; public static final String TAG_APP_INFO = "xsd:appinfo"; public static final String TAG_HAS_PROPERTY = "xsd:hasProperty"; public static final String TAG_RESTRICTION = "xsd:restriction"; public static final String TAG_MAX_LENGTH = "xsd:maxLength"; public static final String ATTR_NAME = "name"; public static final String ATTR_VALUE = "value"; public static final String ATTR_TYPE = "type"; public static final String ATTR_MIXED = "mixed"; public static final String ATTR_USE = "use"; public static final String ATTR_REF = "ref"; public static final String ATTR_MAX_OCCURS = "maxOccurs"; /** * constants representing specific XSD attributes' values used in the parse process */ public static final String FIELD_TAG = "fieldtag"; public static final String FIELD_NUMBER = "fieldnumber"; public static final String FIELD_DATA_TYPE = "fielddatatype"; public static final String FIELD_FMT = "fieldfmt"; public static final String FIELD_LEN = "fieldlen"; public static final String FIELD_INPUT_LEN = "fieldinputlen"; public static final String FIELD_GROUP_NUMBER = "fieldgroupnumber"; public static final String FIELD_MV_GROUP_NUMBER = "fieldmvgroupnumber"; public static final String FIELD_SHORT_NAME = "fieldshortname"; public static final String FIELD_NAME = "fieldname"; public static final String FIELD_COLUMN_NAME = "fieldcolumnname"; public static final String FIELD_GROUP_NAME = "fieldgroupname"; public static final String FIELD_MV_GROUP_NAME = "fieldmvgroupname"; public static final String FIELD_JUSTIFICATION = "fieldjustification"; public static final String FIELD_TYPE = "fieldtype"; public static final String FIELD_SINGLE_OR_MULTI = "singleormulti"; public static final String DELIMITER_COLUMN_TYPE = "#"; public static final String COLUMN_FK_ROW = "FK_ROW"; public static final String COLUMN_XPK_ROW = "XPK_ROW"; public static final int SQL_VIEW_MULTI = 1; public static final int SQL_VIEW_SINGLE = 2; public static final String DATA_TYPE_XSD_NUMERIC = "numeric"; public static final String DATA_TYPE_XSD_DECIMAL = "decimal"; public static final String DATA_TYPE_XSD_STRING = "string"; public static final String DATA_TYPE_XSD_DATE = "date"; /** * application configuration properties */ public static final String PROP_LOG4J_CONFIG_FILE = "log4j_config"; public static final String PROP_MAIN_VIEW_NAME_SINGLE = "view_name_single"; public static final String PROP_MAIN_VIEW_NAME_MULTI = "view_name_multi"; public static final String PROP_MAIN_TABLE_NAME = "main_edh_table_name"; public static final String PROP_SUB_TABLE_PREFIX = "sub_table_prefix"; public static final String PROP_SOURCE_XSD_FULLNAME = "source_xsd_fullname"; public static final String PROP_RESULTS_PATH = "results_path"; public static final String PROP_NEW_XSD_FILENAME = "new_xsd_filename"; public static final String PROP_CSV_FILENAME = "csv_filename"; /** * static holders for application-level utilities */ private static Properties appProps; private static Logger appLogger; /** * */ private StringBuffer sqlViewColumnsSingle = null; private StringBuffer sqlViewSelectSingle = null; private StringBuffer columnsCSV = null; private ArrayList<String> singleValueTableColumns = null; private HashMap<String, String> multiValueTablesSQL = null; private HashMap<Object, HashMap<String, Object>> groupAttrs = null; public XSDTransformer(String appConfigPropsPath) { if (appProps == null) { appProps = new Properties(); } try { init(appConfigPropsPath); } catch (Exception e) { appLogger.error(e.getMessage()); } } /** * initialization */ private void init(String appConfigPropsPath) throws Exception { // init the properties object FileReader in = new FileReader(appConfigPropsPath); appProps.load(in); // init the logger if ((appProps.getProperty(XSDTransformer.PROP_LOG4J_CONFIG_FILE) != null) && (!appProps.getProperty(XSDTransformer.PROP_LOG4J_CONFIG_FILE).equals(""))) { PropertyConfigurator.configure(appProps.getProperty(XSDTransformer.PROP_LOG4J_CONFIG_FILE)); if (appLogger == null) { appLogger = Logger.getLogger(XSDTransformer.class.getName()); } appLogger.info("Application initialization successful."); } sqlViewColumnsSingle = new StringBuffer(); sqlViewSelectSingle = new StringBuffer(); columnsCSV = new StringBuffer(XSDTransformer.FIELD_TAG + "," + XSDTransformer.FIELD_NUMBER + "," + XSDTransformer.FIELD_DATA_TYPE + "," + XSDTransformer.FIELD_FMT + "," + XSDTransformer.FIELD_LEN + "," + XSDTransformer.FIELD_INPUT_LEN + "," + XSDTransformer.FIELD_GROUP_NUMBER + "," + XSDTransformer.FIELD_MV_GROUP_NUMBER + "," + XSDTransformer.FIELD_SHORT_NAME + "," + XSDTransformer.FIELD_NAME + "," + XSDTransformer.FIELD_COLUMN_NAME + "," + XSDTransformer.FIELD_GROUP_NAME + "," + XSDTransformer.FIELD_MV_GROUP_NAME + "," + XSDTransformer.FIELD_JUSTIFICATION + "," + XSDTransformer.FIELD_TYPE + "," + XSDTransformer.FIELD_SINGLE_OR_MULTI + System.getProperty("line.separator")); singleValueTableColumns = new ArrayList<String>(); singleValueTableColumns.add(XSDTransformer.COLUMN_XPK_ROW + XSDTransformer.DELIMITER_COLUMN_TYPE + XSDTransformer.DATA_TYPE_XSD_NUMERIC); multiValueTablesSQL = new HashMap<String, String>(); groupAttrs = new HashMap<Object, HashMap<String, Object>>(); } /** * initialize the <code>DocumentBuilder</code> and read the XSD file * * @param docPath * @return the <code>Document</code> object representing the read XSD file */ private Document retrieveDoc(String docPath) { Document xsdDoc = null; File file = new File(docPath); try { DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); xsdDoc = builder.parse(file); } catch (Exception e) { appLogger.error(e.getMessage()); } return xsdDoc; } /** * perform the iteration/modification on the document * iterate to the level which contains all the elements (Single-Value, and Groups) and start processing each * * @param xsdDoc * @return */ private Document transformDoc(Document xsdDoc) { ArrayList<Object> newElementsList = new ArrayList<Object>(); HashMap<String, Object> docAttrMap = new HashMap<String, Object>(); Element sequenceElement = null; Element schemaElement = null; // get document's root element NodeList nodes = xsdDoc.getChildNodes(); for (int i = 0; i < nodes.getLength(); i++) { if (XSDTransformer.TAG_SCHEMA.equals(nodes.item(i).getNodeName())) { schemaElement = (Element) nodes.item(i); break; } } // process the document (change single-value elements, collect list of new elements to be added) for (int i1 = 0; i1 < schemaElement.getChildNodes().getLength(); i1++) { Node childLevel1 = (Node) schemaElement.getChildNodes().item(i1); // <ComplexType> element if (childLevel1.getNodeName().equals(XSDTransformer.TAG_COMPLEX_TYPE)) { // first, get the main attributes and put it in the csv file for (int i6 = 0; i6 < childLevel1.getChildNodes().getLength(); i6++) { Node child6 = childLevel1.getChildNodes().item(i6); if (XSDTransformer.TAG_ATTRIBUTE.equals(child6.getNodeName())) { if (child6.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME) != null) { String attrName = child6.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME).getNodeValue(); if (((Element) child6).getElementsByTagName(XSDTransformer.TAG_SIMPLE_TYPE).getLength() != 0) { Node simpleTypeElement = ((Element) child6).getElementsByTagName(XSDTransformer.TAG_SIMPLE_TYPE) .item(0); if (((Element) simpleTypeElement).getElementsByTagName(XSDTransformer.TAG_RESTRICTION).getLength() != 0) { Node restrictionElement = ((Element) simpleTypeElement).getElementsByTagName( XSDTransformer.TAG_RESTRICTION).item(0); if (((Element) restrictionElement).getElementsByTagName(XSDTransformer.TAG_MAX_LENGTH).getLength() != 0) { Node maxLengthElement = ((Element) restrictionElement).getElementsByTagName( XSDTransformer.TAG_MAX_LENGTH).item(0); HashMap<String, String> elementProperties = new HashMap<String, String>(); elementProperties.put(XSDTransformer.FIELD_TAG, attrName); elementProperties.put(XSDTransformer.FIELD_NUMBER, "0"); elementProperties.put(XSDTransformer.FIELD_DATA_TYPE, XSDTransformer.DATA_TYPE_XSD_STRING); elementProperties.put(XSDTransformer.FIELD_FMT, ""); elementProperties.put(XSDTransformer.FIELD_NAME, attrName); elementProperties.put(XSDTransformer.FIELD_SHORT_NAME, attrName); elementProperties.put(XSDTransformer.FIELD_COLUMN_NAME, attrName); elementProperties.put(XSDTransformer.FIELD_SINGLE_OR_MULTI, "S"); elementProperties.put(XSDTransformer.FIELD_LEN, maxLengthElement.getAttributes().getNamedItem( XSDTransformer.ATTR_VALUE).getNodeValue()); elementProperties.put(XSDTransformer.FIELD_INPUT_LEN, maxLengthElement.getAttributes() .getNamedItem(XSDTransformer.ATTR_VALUE).getNodeValue()); constructElementRow(elementProperties); // add the attribute as a column in the single-value table singleValueTableColumns.add(attrName + XSDTransformer.DELIMITER_COLUMN_TYPE + XSDTransformer.DATA_TYPE_XSD_STRING + XSDTransformer.DELIMITER_COLUMN_TYPE + maxLengthElement.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE).getNodeValue()); // add the attribute as a column in the single-values view sqlViewColumnsSingle.append(System.getProperty("line.separator") + attrName + ", "); sqlViewSelectSingle.append(System.getProperty("line.separator") + attrName + ", "); appLogger.debug("added attribute: " + attrName); } } } } } } // now, loop on the elements and process them for (int i2 = 0; i2 < childLevel1.getChildNodes().getLength(); i2++) { Node childLevel2 = (Node) childLevel1.getChildNodes().item(i2); // <Sequence> element if (childLevel2.getNodeName().equals(XSDTransformer.TAG_SEQUENCE)) { sequenceElement = (Element) childLevel2; for (int i3 = 0; i3 < childLevel2.getChildNodes().getLength(); i3++) { Node childLevel3 = (Node) childLevel2.getChildNodes().item(i3); // <Element> element if (childLevel3.getNodeName().equals(XSDTransformer.TAG_ELEMENT)) { // check if single element or group if (isGroup(childLevel3)) { processGroup(childLevel3, true, null, docAttrMap, xsdDoc, newElementsList); // insert a new comment node with the contents of the group tag sequenceElement.insertBefore(xsdDoc.createComment(serialize(childLevel3)), childLevel3); // remove the group tag sequenceElement.removeChild(childLevel3); } else { processElement(childLevel3); } } } } } } } // add new elements // this step should be after finishing processing the whole document. when you add new elements to the document // while you are working on it, those new elements will be included in the processing. We don't need that! for (int i = 0; i < newElementsList.size(); i++) { sequenceElement.appendChild((Element) newElementsList.get(i)); } // write the new required attributes to the schema element Iterator<String> attrIter = docAttrMap.keySet().iterator(); while(attrIter.hasNext()) { Element attr = (Element) docAttrMap.get(attrIter.next()); Element newAttrElement = xsdDoc.createElement(XSDTransformer.TAG_ATTRIBUTE); appLogger.debug("appending attr. [" + attr.getAttribute(XSDTransformer.ATTR_NAME) + "]..."); newAttrElement.setAttribute(XSDTransformer.ATTR_NAME, attr.getAttribute(XSDTransformer.ATTR_NAME)); newAttrElement.setAttribute(XSDTransformer.ATTR_TYPE, attr.getAttribute(XSDTransformer.ATTR_TYPE)); schemaElement.appendChild(newAttrElement); } return xsdDoc; } /** * check if the <code>element</code> sent is single-value element or group * element. the comparison depends on the children of the element. if found one of type * <code>ComplexType</code> then it's a group element, and if of type * <code>SimpleType</code> then it's a single-value element * * @param element * @return <code>true</code> if the element is a group element, * <code>false</code> otherwise */ private boolean isGroup(Node element) { for (int i = 0; i < element.getChildNodes().getLength(); i++) { Node child = (Node) element.getChildNodes().item(i); if (child.getNodeName().equals(XSDTransformer.TAG_COMPLEX_TYPE)) { // found a ComplexType child (Group element) return true; } else if (child.getNodeName().equals(XSDTransformer.TAG_SIMPLE_TYPE)) { // found a SimpleType child (Single-Value element) return false; } } return false; /* String attrName = null; if (element.getAttributes() != null) { Node attribute = element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME); if (attribute != null) { attrName = attribute.getNodeValue(); } } if (attrName.startsWith("g")) { // group element return true; } else { // single element return false; } */ } /** * process a group element. recursively, process groups till no more group elements are found * * @param element * @param isFirstLevelGroup * @param attrMap * @param docAttrMap * @param xsdDoc * @param newElementsList */ private void processGroup(Node element, boolean isFirstLevelGroup, Node parentGroup, HashMap<String, Object> docAttrMap, Document xsdDoc, ArrayList<Object> newElementsList) { String elementName = null; HashMap<String, Object> groupAttrMap = new HashMap<String, Object>(); HashMap<String, Object> parentGroupAttrMap = new HashMap<String, Object>(); if (element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME) != null) { elementName = element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME).getNodeValue(); } appLogger.debug("processing group [" + elementName + "]..."); // get the attributes if a non-first-level-group // attributes are: groups's own attributes + parent group's attributes if (!isFirstLevelGroup) { // get the current element (group) attributes for (int i1 = 0; i1 < element.getChildNodes().getLength(); i1++) { if (XSDTransformer.TAG_COMPLEX_TYPE.equals(element.getChildNodes().item(i1).getNodeName())) { Node complexTypeNode = element.getChildNodes().item(i1); for (int i2 = 0; i2 < complexTypeNode.getChildNodes().getLength(); i2++) { if (XSDTransformer.TAG_ATTRIBUTE.equals(complexTypeNode.getChildNodes().item(i2).getNodeName())) { appLogger.debug("add group attr: " + ((Element) complexTypeNode.getChildNodes().item(i2)).getAttribute(XSDTransformer.ATTR_NAME)); groupAttrMap.put(((Element) complexTypeNode.getChildNodes().item(i2)).getAttribute(XSDTransformer.ATTR_NAME), complexTypeNode.getChildNodes().item(i2)); docAttrMap.put(((Element) complexTypeNode.getChildNodes().item(i2)).getAttribute(XSDTransformer.ATTR_NAME), complexTypeNode.getChildNodes().item(i2)); } } } } // now, get the parent's attributes parentGroupAttrMap = groupAttrs.get(parentGroup); if (parentGroupAttrMap != null) { Iterator<String> iter = parentGroupAttrMap.keySet().iterator(); while (iter.hasNext()) { String attrName = iter.next(); groupAttrMap.put(attrName, parentGroupAttrMap.get(attrName)); } } // put the attributes in the attributes map groupAttrs.put(element, groupAttrMap); } for (int i = 0; i < element.getChildNodes().getLength(); i++) { Node childLevel1 = (Node) element.getChildNodes().item(i); if (childLevel1.getNodeName().equals(XSDTransformer.TAG_COMPLEX_TYPE)) { for (int j = 0; j < childLevel1.getChildNodes().getLength(); j++) { Node childLevel2 = (Node) childLevel1.getChildNodes().item(j); if (childLevel2.getNodeName().equals(XSDTransformer.TAG_SEQUENCE)) { for (int k = 0; k < childLevel2.getChildNodes().getLength(); k++) { Node childLevel3 = (Node) childLevel2.getChildNodes().item(k); if (childLevel3.getNodeName().equals(XSDTransformer.TAG_ELEMENT)) { // check if single element or group if (isGroup(childLevel3)) { // another group element.. // unfortunately, a recursion is // needed here!!! :-( processGroup(childLevel3, false, element, docAttrMap, xsdDoc, newElementsList); } else { // reached a single-value element.. copy it under the // main sequence and apply the name-shorname // replacement processGroupElement(childLevel3, element, isFirstLevelGroup, xsdDoc, newElementsList); } } } } } } } appLogger.debug("finished processing group [" + elementName + "]."); } /** * process the sent <code>element</code> to extract/modify required * information: * 1. replace the <code>name</code> attribute with the <code>shortname</code>. * * @param element */ private void processElement(Node element) { String fieldShortName = null; String fieldColumnName = null; String fieldDataType = null; String fieldFormat = null; String fieldInputLength = null; String elementName = null; HashMap<String, String> elementProperties = new HashMap<String, String>(); if (element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME) != null) { elementName = element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME).getNodeValue(); } appLogger.debug("processing element [" + elementName + "]..."); for (int i = 0; i < element.getChildNodes().getLength(); i++) { Node childLevel1 = (Node) element.getChildNodes().item(i); if (childLevel1.getNodeName().equals(XSDTransformer.TAG_ANNOTATION)) { for (int j = 0; j < childLevel1.getChildNodes().getLength(); j++) { Node childLevel2 = (Node) childLevel1.getChildNodes().item(j); if (childLevel2.getNodeName().equals(XSDTransformer.TAG_APP_INFO)) { for (int k = 0; k < childLevel2.getChildNodes().getLength(); k++) { Node childLevel3 = (Node) childLevel2.getChildNodes().item(k); if (childLevel3.getNodeName().equals(XSDTransformer.TAG_HAS_PROPERTY)) { if (childLevel3.getAttributes() != null) { String attrName = null; Node attribute = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME); if (attribute != null) { attrName = attribute.getNodeValue(); elementProperties.put(attrName, childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue()); if (attrName.equals(XSDTransformer.FIELD_SHORT_NAME)) { fieldShortName = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_COLUMN_NAME)) { fieldColumnName = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_DATA_TYPE)) { fieldDataType = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_FMT)) { fieldFormat = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_INPUT_LEN)) { fieldInputLength = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } } } } } } } } } if (element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME) != null) { element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME).setNodeValue(fieldShortName); } sqlViewColumnsSingle.append(System.getProperty("line.separator") + fieldColumnName + ", "); sqlViewSelectSingle.append(System.getProperty("line.separator") + fieldShortName + ", "); elementProperties.put(XSDTransformer.FIELD_SINGLE_OR_MULTI, "S"); constructElementRow(elementProperties); singleValueTableColumns.add(fieldShortName + XSDTransformer.DELIMITER_COLUMN_TYPE + fieldDataType + fieldFormat + XSDTransformer.DELIMITER_COLUMN_TYPE + fieldInputLength); appLogger.debug("finished processing element [" + elementName + "]."); } /** * process the sent <code>element</code> to extract/modify required * information: * 1. copy the element under the main sequence * 2. replace the <code>name</code> attribute with the <code>shortname</code>. * 3. add the attributes of the parent groups (if non-first-level-group) * * @param element */ private void processGroupElement(Node element, Node parentGroup, boolean isFirstLevelGroup, Document xsdDoc, ArrayList<Object> newElementsList) { String fieldShortName = null; String fieldColumnName = null; String fieldDataType = null; String fieldFormat = null; String fieldInputLength = null; String elementName = null; Element newElement = null; HashMap<String, String> elementProperties = new HashMap<String, String>(); ArrayList<String> tableColumns = new ArrayList<String>(); HashMap<String, Object> groupAttrMap = null; if (element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME) != null) { elementName = element.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME).getNodeValue(); } appLogger.debug("processing element [" + elementName + "]..."); // 1. copy the element newElement = (Element) element.cloneNode(true); newElement.setAttribute(XSDTransformer.ATTR_MAX_OCCURS, "unbounded"); // 2. if non-first-level-group, replace the element's SimpleType tag with a ComplexType tag if (!isFirstLevelGroup) { if (((Element) newElement).getElementsByTagName(XSDTransformer.TAG_SIMPLE_TYPE).getLength() != 0) { // there should be only one tag of SimpleType Node simpleTypeNode = ((Element) newElement).getElementsByTagName(XSDTransformer.TAG_SIMPLE_TYPE).item(0); // create the new ComplexType element Element complexTypeNode = xsdDoc.createElement(XSDTransformer.TAG_COMPLEX_TYPE); complexTypeNode.setAttribute(XSDTransformer.ATTR_MIXED, "true"); // get the list of attributes for the parent group groupAttrMap = groupAttrs.get(parentGroup); Iterator<String> attrIter = groupAttrMap.keySet().iterator(); while(attrIter.hasNext()) { Element attr = (Element) groupAttrMap.get(attrIter.next()); Element newAttrElement = xsdDoc.createElement(XSDTransformer.TAG_ATTRIBUTE); appLogger.debug("adding attr. [" + attr.getAttribute(XSDTransformer.ATTR_NAME) + "]..."); newAttrElement.setAttribute(XSDTransformer.ATTR_REF, attr.getAttribute(XSDTransformer.ATTR_NAME)); newAttrElement.setAttribute(XSDTransformer.ATTR_USE, "optional"); complexTypeNode.appendChild(newAttrElement); } // replace the old SimpleType node with the new ComplexType node newElement.replaceChild(complexTypeNode, simpleTypeNode); } } // 3. replace the name with the shortname in the new element for (int i = 0; i < newElement.getChildNodes().getLength(); i++) { Node childLevel1 = (Node) newElement.getChildNodes().item(i); if (childLevel1.getNodeName().equals(XSDTransformer.TAG_ANNOTATION)) { for (int j = 0; j < childLevel1.getChildNodes().getLength(); j++) { Node childLevel2 = (Node) childLevel1.getChildNodes().item(j); if (childLevel2.getNodeName().equals(XSDTransformer.TAG_APP_INFO)) { for (int k = 0; k < childLevel2.getChildNodes().getLength(); k++) { Node childLevel3 = (Node) childLevel2.getChildNodes().item(k); if (childLevel3.getNodeName().equals(XSDTransformer.TAG_HAS_PROPERTY)) { if (childLevel3.getAttributes() != null) { String attrName = null; Node attribute = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_NAME); if (attribute != null) { attrName = attribute.getNodeValue(); elementProperties.put(attrName, childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue()); if (attrName.equals(XSDTransformer.FIELD_SHORT_NAME)) { fieldShortName = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_COLUMN_NAME)) { fieldColumnName = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_DATA_TYPE)) { fieldDataType = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE) .getNodeValue(); } else if (attrName.equals(XSDTransformer.FIELD_FMT)) { fieldFormat = childLevel3.getAttributes().getNamedItem(XSDTransformer.ATTR_VALUE)

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  • Apache/passenger/ree doesn't interpret .rb files

    - by Sergey
    I'm trying to get apache + passenger + ree to work. I think I did everything (except for setting up rails env - for now I wanna run just pure ruby) described here: http://rvm.beginrescueend.com/integration/passenger/ But when I try to go to localhost/test.rb it doesn't interpret that file and just download it. I don't know where should I look for mistakes, so here are a few files I think could be relevant: /var/log/apache2/error.log (these 2 lines are repeating) [Mon May 31 23:12:47 2010] [notice] Graceful restart requested, doing restart [Mon May 31 23:12:48 2010] [notice] Apache/2.2.14 (Ubuntu) PHP/5.3.2-1ubuntu4.2 with Suhosin-Patch Phusion_Passenger/2.2.11 configured -- resuming normal operations /etc/apache2/httpd.conf LoadModule passenger_module /home/sergey/.rvm/gems/ree-1.8.7-2010.01/gems/passenger-2.2.11/ext/apache2/mod_passenger.so PassengerRoot /home/sergey/.rvm/gems/ree-1.8.7-2010.01/gems/passenger-2.2.11 PassengerRuby /home/sergey/.rvm/bin/passenger_ruby /var/www/test.rb puts "test"

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  • apache syslog-ng error logs and access logs

    - by uzumaki naruto
    I am trying to send all my apache logs to syslog-ng(on remote machine) which in turn writes to a file. so I configure syslog-ng this way source s_apache { unix-stream("/var/log/apache_log.socket" max-connections(512) keep-alive(yes)); }; filter f_apache { match("error"); }; destination df_custom { file("/var/log/custom.log"); }; log { source(s_apache); filter(f_apache); destination(df_custom); }; and add the following line to apache2.conf ErrorLog "|/usr/bin/logger -t 'apache' -u /var/log/apache_log.socket" but only logs being written to "/var/log/custom.log" are [Mon Jul 13 17:24:36 2009] [notice] caught SIGTERM, shutting down and [Mon Jul 13 17:26:11 2009] [notice] Apache/2.2.11 (Ubuntu) configured -- resuming normal operations I want all logs to be sent to custom.log..... Please help me.... where am I going wrong?

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  • Killing a deadlocked Task in .NET 4 TPL

    - by Dan Bryant
    I'd like to start using the Task Parallel Library, as this is the recommended framework going forward for performing asynchronous operations. One thing I haven't been able to find is any means of forcible Abort, such as what Thread.Abort provides. My particular concern is that I schedule tasks running code that I don't wish to completely trust. In particular, I can't be sure this untrusted code won't deadlock and therefore I can't be certain if a Task I schedule using this code will ever complete. I want to stay away from true AppDomain isolation (due to the overhead and complexity of marshaling), but I also don't want to leave a Task thread hanging around, deadlocked. Is there a way to do this in TPL?

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  • ASP.NET website not working properly in mobile

    - by ria
    I have created a simple app with a page having a server side form, three fields and a button that submits and performs two operations - 1) adds the form fields to the database table 2) sends an email. Now everything works fine on the web browser on my machine but when I access the app through my mobile, the page does not seem to work. the UI and all are set but the button click functionality doesnt seem to be working and also the label which is set after a successful submit is already visible and showing the "thank you" message. Am i doing something wrong here? I have checked the app on Nokia Smartphone browser, android phone, and iphone simulator.

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  • MissingMethodException ( Can`t find PInvoke DLL 'sqlceme30.dll ' ) for Windows Mobile

    - by anyinfonet
    Hello. I have developed a win mobile (v5.0) application and I use ONLY 1 database SQLITE with these references: System.Data.SQLite.dll (assembly version & product version : 1.0.65.0); SQLite.Interop.065.DLL (product version : 1.0 and is a c++ lib for first dll ). After 5 weeks of using of this application, I get today a weird exception and I dont understand what it is? Exception is: MissingMethodException Can`t find PInvoke DLL 'sqlceme30.dll ' at System.Data.SqlServerCe.SqlCeCommand.ReleaseNativeInterfaces() at System.Data.SqlServerCe.SqlCeCommand.Dispose(Boolean disposing) ...... What`s wrong? Anyone know about this to explain me please? By the way : until now I delevoped 3-4 applications (1 year ago )using these references and everything worked fine.

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  • ASN1 out of memory. during a signedCMS.decode

    - by JL
    I am having a problem using the signedCMS.decode routine. See the code below. The error seems to occur when the file size is too big in this case 11MB. private static void RemoveZfoSignature(string zfoFileName) { byte[] fileContents = File.ReadAllBytes(zfoFileName); var contentInfo = new ContentInfo(fileContents); var signedCms = new SignedCms(contentInfo); // This line throws the error 100% of the time signedCms.Decode(fileContents); signedCms.RemoveSignature(0); byte[] outfile = signedCms.ContentInfo.Content; string outFileName = zfoFileName.Replace(".zfo", "_tmp.zfo"); File.WriteAllBytes(outFileName, outfile); } Here is the exact error: "System.Security.Cryptography.CryptographicException: ASN1 out of memory. at System.Security.Cryptography.Pkcs.SignedCms.OpenToDecode(Byte[] encodedMessage, ContentInfo contentInfo, Boolean detached) at System.Security.Cryptography.Pkcs.SignedCms.Decode(Byte[] encodedMessage) at ConsoleApplication2.Program.RemoveZfoSignature(String zfoFileName) in C:\\Users\\\\Documents\\Visual Studio 2008\\Projects\\ConsoleApplication2\\ConsoleApplication2\\Program.cs:line 30" Any idea on how to fix this?

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  • Performance of std::pow - cache misses???

    - by Eamon Nerbonne
    I've been trying to optimize a numeric program of mine, and have run into something of a mystery. I'm looping over code that performs thousands of floating point operations, and just 1 call to pow nevertheless, that call takes 5% of the time... That's not necessarily a critical issue, but it is odd, so I'd like to understand what's happening. When I profiled for cache misses, VS.NET 2010RC's profiler reports that virtually all cache misses are occurring in std::pow... so... what's up with that? Is there a faster alternative? I tried powf, but that's only slightly faster; it's still responsible for an abnormal number of cache misses. Why would a basic function like pow cause cache-misses?

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  • Exception with Subsonic 2.2, SQLite and Migrations

    - by Holger Amann
    Hi, I'm playing with Migrations and created a simple migration like public class Migration001 : Migration { public override void Up() { TableSchema.Table testTable = CreateTableWithKey("TestTable"); } public override void Down() { } } after executing sonic.exe migrate I'm getting the following output: Setting ConfigPath: 'App.config' Building configuration from c:\tmp\MigrationTest\MigrationTest\App.config Adding connection to SQLiteProvider Found 1 migration files Current DB Version is 0 Migrating to 001_Init (1) There was an error running migration (001_Init): SQLite error near "IDENTITY": syntax error Stack Trace: at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] argum ents, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner) at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] argume nts, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwn er) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invoke Attr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisib ilityChecks) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invoke Attr, Binder binder, Object[] parameters, CultureInfo culture) at SubSonic.CodeRunner.RunAndExecute(ICodeLanguage lang, String sourceCode, S tring methodName, Object[] parameters) in D:\@SubSonic\SubSonic\SubSonic.Migrati ons\CodeRunner.cs:line 95 at SubSonic.Migrations.Migrator.ExecuteMigrationCode(String migrationFile) in D:\@SubSonic\SubSonic\SubSonic.Migrations\Migrator.cs:line 177 at SubSonic.Migrations.Migrator.Migrate() in D:\@SubSonic\SubSonic\SubSonic.M igrations\Migrator.cs:line 141 Any hints?

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  • Good example usage of get_or _create in Django views and raising a Form error

    - by Rik Wade
    I would like to use get_or_create to check whether an object already exists in my database. If it does not, then it will be created. If it does exist, then I will not create the new object, but need to raise a form error to inform the user that they need to enter different data (for example, a different username). The view contains: p, created = Person.objects.get_or_create( email = registration_form.cleaned_data['email'], defaults = { 'creationDate': datetime.datetime.now(), 'dateOfBirth': datetime.date(1970,1,1) }) So 'p' will contain the existing Person if it exists, or the new Person if not. I would like to act on the boolean value in 'created' in order to skip over saving the Person and re-display the registration_form and raise an appropriate form validation error. The alternative I'm considering is doing a check in a custom Form validation method to see whether a Person exists with the data in the provided 'email' field, and just raising a validation error.

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  • how to get data from HTMLDataTable in jsf?

    - by Guru
    <h:dataTable width="100%" border="1" cellspacing="0" cellpadding="2" style="border-collapse:collapse;display:block" styleClass="Header" value="#{adminBean.displayResults}" var="aResult" binding="#{adminBean.browseResultsHTMLDataTable}"> This is what i am trying to do. I have a dynamic list of data, which i try to display in the HTML Table format using h:dataTable (the bounded value is an arrayList). The table has got a radio button for each row it displays (boolean w/ h:selectOneRadio ) now when i select the radio button in one of these rows, i want to get the values of the row that is selected for which i try to use binding attribute. But i get Row Unavailable exception - is my approach wrong? any suggestions?

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  • What is the right tool to detect VMT or heap corruption in Delphi ?

    - by Roland Bengtsson
    I'm a member in a team that use Delphi 2007 for a larger application and we suspect heap corruption because sometimes there are strange bugs that have no other explanation. I believe that the Rangechecking option for the compiler is only for arrays. I want a tool that give an exception or log when there is a write on a memory address that is not allocated by the application. Regards EDIT: The error is of type: Error: Access violation at address 00404E78 in module 'BoatLogisticsAMCAttracsServer.exe'. Read of address FFFFFFDD EDIT2: Thanks for all suggestions. Unfortunately I think that the solution is deeper than that. We use a patched version of Bold for Delphi as we own the source. Probably there are some errors introduced in the Bold framwork. Yes we have a log with callstacks that are handled by JCL and also trace messages. So a callstack with the exception can lock like this: 20091210 16:02:29 (2356) [EXCEPTION] Raised EBold: Failed to derive ServerSession.mayDropSession: Boolean OCL expression: not active and not idle and timeout and (ApplicationKernel.allinstances->first.CurrentSession <> self) Error: Access violation at address 00404E78 in module 'BoatLogisticsAMCAttracsServer.exe'. Read of address FFFFFFDD. At Location BoldSystem.TBoldMember.CalculateDerivedMemberWithExpression (BoldSystem.pas:4016) Inner Exception Raised EBold: Failed to derive ServerSession.mayDropSession: Boolean OCL expression: not active and not idle and timeout and (ApplicationKernel.allinstances->first.CurrentSession <> self) Error: Access violation at address 00404E78 in module 'BoatLogisticsAMCAttracsServer.exe'. Read of address FFFFFFDD. At Location BoldSystem.TBoldMember.CalculateDerivedMemberWithExpression (BoldSystem.pas:4016) Inner Exception Call Stack: [00] System.TObject.InheritsFrom (sys\system.pas:9237) Call Stack: [00] BoldSystem.TBoldMember.CalculateDerivedMemberWithExpression (BoldSystem.pas:4016) [01] BoldSystem.TBoldMember.DeriveMember (BoldSystem.pas:3846) [02] BoldSystem.TBoldMemberDeriver.DoDeriveAndSubscribe (BoldSystem.pas:7491) [03] BoldDeriver.TBoldAbstractDeriver.DeriveAndSubscribe (BoldDeriver.pas:180) [04] BoldDeriver.TBoldAbstractDeriver.SetDeriverState (BoldDeriver.pas:262) [05] BoldDeriver.TBoldAbstractDeriver.Derive (BoldDeriver.pas:117) [06] BoldDeriver.TBoldAbstractDeriver.EnsureCurrent (BoldDeriver.pas:196) [07] BoldSystem.TBoldMember.EnsureContentsCurrent (BoldSystem.pas:4245) [08] BoldSystem.TBoldAttribute.EnsureNotNull (BoldSystem.pas:4813) [09] BoldAttributes.TBABoolean.GetAsBoolean (BoldAttributes.pas:3069) [10] BusinessClasses.TLogonSession._GetMayDropSession (code\BusinessClasses.pas:31854) [11] DMAttracsTimers.TAttracsTimerDataModule.RemoveDanglingLogonSessions (code\DMAttracsTimers.pas:237) [12] DMAttracsTimers.TAttracsTimerDataModule.UpdateServerTimeOnTimerTrig (code\DMAttracsTimers.pas:482) [13] DMAttracsTimers.TAttracsTimerDataModule.TimerKernelWork (code\DMAttracsTimers.pas:551) [14] DMAttracsTimers.TAttracsTimerDataModule.AttracsTimerTimer (code\DMAttracsTimers.pas:600) [15] ExtCtrls.TTimer.Timer (ExtCtrls.pas:2281) [16] Classes.StdWndProc (common\Classes.pas:11583) The inner exception part is the callstack at the moment an exception is reraised. EDIT3: The theory right now is that the Virtual Memory Table (VMT) is somehow broken. When this happen there is no indication of it. Only when a method is called an exception is raised (ALWAYS on address FFFFFFDD, -35 decimal) but then it is too late. You don't know the real cause for the error. Any hint of how to catch a bug like this is really appreciated!!! We have tried with SafeMM, but the problem is that the memory consumption is too high even when the 3 GB flag is used. So now I try to give a bounty to the SO community :) EDIT4: One hint is that according the log there is often (or even always) another exception before this. It can be for example optimistic locking in the database. We have tried to raise exceptions by force but in test environment it just works fine. EDIT5: Story continues... I did a search on the logs for the last 30 days now. The result: "Read of address FFFFFFDB" 0 "Read of address FFFFFFDC" 24 "Read of address FFFFFFDD" 270 "Read of address FFFFFFDE" 22 "Read of address FFFFFFDF" 7 "Read of address FFFFFFE0" 20 "Read of address FFFFFFE1" 0 So the current theory is that an enum (there is a lots in Bold) overwrite a pointer. I got 5 hits with different address above. It could mean that the enum holds 5 values where the second one is most used. If there is an exception a rollback should occur for the database and Boldobjects should be destroyed. Maybe there is a chance that not everything is destroyed and a enum still can write to an address location. If this is true maybe it is possible to search the code by a regexpr for an enum with 5 values ? EDIT6: To summarize, no there is no solution to the problem yet. I realize that I may mislead you a bit with the callstack. Yes there are a timer in that but there are other callstacks without a timer. Sorry for that. But there are 2 common factors. An exception with Read of address FFFFFFxx. Top of callstack is System.TObject.InheritsFrom (sys\system.pas:9237) This convince me that VilleK best describe the problem. I'm also convinced that the problem is somewhere in the Bold framework. But the BIG question is, how can problems like this be solved ? It is not enough to have an Assert like VilleK suggest as the damage has already happened and the callstack is gone at that moment. So to describe my view of what may cause the error: Somewhere a pointer is assigned a bad value 1, but it can be also 0, 2, 3 etc. An object is assigned to that pointer. There is method call in the objects baseclass. This cause method TObject.InheritsForm to be called and an exception appear on address FFFFFFDD. Those 3 events can be together in the code but they may also be used much later. I think this is true for the last method call. EDIT7: We work closely with the the author of Bold Jan Norden and he recently found a bug in the OCL-evaluator in Bold framework. When this was fixed these kinds of exceptions decreased a lot but they still occasionally come. But it is a big relief that this is almost solved.

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  • CompliationLock throws HttpException when registering areas for ASP.NET MVC unit tests

    - by patridge
    The moment I added a unit test to my ASP.NET MVC application to test some of the area routing, I got an HttpException coming out of the System.Web.Complication.CompilationLock type initializer with the following stack trace. System.Web.HttpException : The type initializer for 'System.Web.Compilation.CompilationLock' threw an exception. ----> System.TypeInitializationException : The type initializer for 'System.Web.Compilation.CompilationLock' threw an exception. ----> System.NullReferenceException : Object reference not set to an instance of an object. at System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() at System.Web.Compilation.BuildManager.GetReferencedAssemblies() at System.Web.Mvc.BuildManagerWrapper.System.Web.Mvc.IBuildManager.GetReferencedAssemblies() at System.Web.Mvc.TypeCacheUtil.FilterTypesInAssemblies(IBuildManager buildManager, Predicate`1 predicate) at System.Web.Mvc.TypeCacheUtil.GetFilteredTypesFromAssemblies(String cacheName, Predicate`1 predicate, IBuildManager buildManager) at System.Web.Mvc.AreaRegistration.RegisterAllAreas(RouteCollection routes, IBuildManager buildManager, Object state) at System.Web.Mvc.AreaRegistration.RegisterAllAreas(Object state) at System.Web.Mvc.AreaRegistration.RegisterAllAreas() at StpWeb.MvcApplication.RegisterRoutes(RouteCollection routes) in Global.asax.cs: line 16 at StpWeb.Tests.RoutesTest.TestFixtureSetUp() in RoutesTest.cs: line 11 --TypeInitializationException at System.Web.Compilation.CompilationLock.GetLock(ref Boolean gotLock) at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() --NullReferenceException at System.Web.Compilation.CompilationLock..cctor()

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  • Ever any performance different between Java >> and >>> right shift operators?

    - by Sean Owen
    Is there ever reason to think the (signed) and (unsigned) right bit-shift operators in Java would perform differently? I can't detect any difference on my machine. This is purely an academic question; it's never going to be the bottleneck I'm sure. I know: it's best to write what you mean foremost; use for division by 2, for example. I assume it comes down to which architectures have which operations implemented as an instruction.

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  • Having a little trouble with this Java code. Beginner probably mixing some things with C#.

    - by Sergio Tapia
    package practico1; /** * Programador: Sergio Tapia Gutierrez * Fecha: Lunes 10, Mayo - 2010 * Practico: 1 */ public class Main { public static void main(String[] args) { System.out.println("Esta es una pequena aplicacion para mostrar los"); System.out.println("distintos tipos de datos que existen en Java 6."); //boolean, char, byte, short, int, long, float, double, String ejemplosBoolean(); } public void ejemplosBoolean(){ } } So, I'm just testing some things out, but I'm getting an error claiming that I'm trying to run ejemplosBoolean() in a static context when it isn't a static method. My question is, in Java do methods have to have static in order to use them even if they are in the same class?

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  • Microsoft.Office.Interop.MSProject - why are my files always locked (by me!) when I try to open them

    - by Anders Juul
    Hi all, I'm trying to use Interop to manipulate MS Project 2003 (MPP) files. My problem is that MS Project reports that the files is already opened by another user (me!) and that I can open it only as read-only. Obviously, I've tried to restart studio, then windows (xp) but with no effect. The file attribute for Readonly is cleared on the file. Any suggestions for what I might try?! Thanks, Anders Imports Microsoft.Office.Interop.MSProject ... Dim app As ApplicationClass = New ApplicationClass() app.Visible = False Dim success As Boolean = app.FileOpen(fullPath, False)

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  • Is there a JS diff library against htmlstring just like google-diff-match-patch on plain text?

    - by Steve
    Currently I am using google-diff-match-patch to implement a real-time editing tool, which can synchronize texts between multiple users. Everything works great when operations are only plain texts, each user's operation(add/delete texts) could be diff-ed out by comparing to old text snapshot with the helper of google-diff. But when rich format texts(like bold/italic) are involved, google-diff not working well when comparing the htmlstring. The occurrence of character of < and > messed up the diff results, especially when bold/italic format are embedded within each other. Could anyone suggest a similar library like google-diff to diff htmlstrings? Or any suggestions can get my problem fixed with google-diff? I understood google-diff is designed for plain text, but really didn't find a better library than it so far, so it also works if a doable enhancement to google-diff can help. Thanks for any comments. Regards, Steve

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