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  • Big Data – Operational Databases Supporting Big Data – Key-Value Pair Databases and Document Databases – Day 13 of 21

    - by Pinal Dave
    In yesterday’s blog post we learned the importance of the Relational Database and NoSQL database in the Big Data Story. In this article we will understand the role of Key-Value Pair Databases and Document Databases Supporting Big Data Story. Now we will see a few of the examples of the operational databases. Relational Databases (Yesterday’s post) NoSQL Databases (Yesterday’s post) Key-Value Pair Databases (This post) Document Databases (This post) Columnar Databases (Tomorrow’s post) Graph Databases (Tomorrow’s post) Spatial Databases (Tomorrow’s post) Key Value Pair Databases Key Value Pair Databases are also known as KVP databases. A key is a field name and attribute, an identifier. The content of that field is its value, the data that is being identified and stored. They have a very simple implementation of NoSQL database concepts. They do not have schema hence they are very flexible as well as scalable. The disadvantages of Key Value Pair (KVP) database are that they do not follow ACID (Atomicity, Consistency, Isolation, Durability) properties. Additionally, it will require data architects to plan for data placement, replication as well as high availability. In KVP databases the data is stored as strings. Here is a simple example of how Key Value Database will look like: Key Value Name Pinal Dave Color Blue Twitter @pinaldave Name Nupur Dave Movie The Hero As the number of users grow in Key Value Pair databases it starts getting difficult to manage the entire database. As there is no specific schema or rules associated with the database, there are chances that database grows exponentially as well. It is very crucial to select the right Key Value Pair Database which offers an additional set of tools to manage the data and provides finer control over various business aspects of the same. Riak Rick is one of the most popular Key Value Database. It is known for its scalability and performance in high volume and velocity database. Additionally, it implements a mechanism for collection key and values which further helps to build manageable system. We will further discuss Riak in future blog posts. Key Value Databases are a good choice for social media, communities, caching layers for connecting other databases. In simpler words, whenever we required flexibility of the data storage keeping scalability in mind – KVP databases are good options to consider. Document Database There are two different kinds of document databases. 1) Full document Content (web pages, word docs etc) and 2) Storing Document Components for storage. The second types of the document database we are talking about over here. They use Javascript Object Notation (JSON) and Binary JSON for the structure of the documents. JSON is very easy to understand language and it is very easy to write for applications. There are two major structures of JSON used for Document Database – 1) Name Value Pairs and 2) Ordered List. MongoDB and CouchDB are two of the most popular Open Source NonRelational Document Database. MongoDB MongoDB databases are called collections. Each collection is build of documents and each document is composed of fields. MongoDB collections can be indexed for optimal performance. MongoDB ecosystem is highly available, supports query services as well as MapReduce. It is often used in high volume content management system. CouchDB CouchDB databases are composed of documents which consists fields and attachments (known as description). It supports ACID properties. The main attraction points of CouchDB are that it will continue to operate even though network connectivity is sketchy. Due to this nature CouchDB prefers local data storage. Document Database is a good choice of the database when users have to generate dynamic reports from elements which are changing very frequently. A good example of document usages is in real time analytics in social networking or content management system. Tomorrow In tomorrow’s blog post we will discuss about various other Operational Databases supporting Big Data. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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  • Why would 70-persistent-net.rules have no effect?

    - by Wes Felter
    I've got a saucy server with a lot of NICs and they end up with weird names like "rename19". I know interface names can be changed by modifying the /etc/udev/rules.d/70-persistent-net.rules file. The first clue that something is wrong is that that file did not exist even though it's supposed to be created automatically. So I decided to write my own based on advice from Linux From Scratch: ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:06:00.0", NAME="eth0" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:06:00.1", NAME="eth1" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:06:00.2", NAME="eth2" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:06:00.3", NAME="eth3" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:0c:00.0", NAME="mezz0" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:0c:00.1", NAME="mezz1" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:1b:00.0", NAME="slot1a" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:1b:00.1", NAME="slot1b" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:20:00.0", NAME="slot2a" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:20:00.1", NAME="slot2b" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:11:00.0", NAME="slot3a" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:11:00.1", NAME="slot3b" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:8b:00.0", NAME="slot4a" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:8b:00.1", NAME="slot4b" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:90:00.0", NAME="slot5a" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:90:00.1", NAME="slot5b" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:95:00.0", NAME="slot6a" ACTION=="add", SUBSYSTEM=="net", BUS=="pci", KERNELS=="0000:95:00.1", NAME="slot6b" (I'm matching on PCI IDs instead of MAC addresses because I have multiple identical machines that I want to apply this configuration to.) After rebooting, nothing has changed. It's like these rules aren't even being read. There's not much going on in dmesg either: $ dmesg | grep udev [ 3.196629] systemd-udevd[323]: starting version 204 [ 6.719140] systemd-udevd[550]: starting version 204 [ 38.695050] init: udev-fallback-graphics main process (1658) terminated with status 1

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  • What do you do to balance the upper or lower case style to name file or folder between work and life? [on hold]

    - by sojyq
    I am a programmer from China. And I like to use English words to name my files and folders Whether it is for work or life. For example, suck as Movie, Work, QtProjects, Music and so on.And I keep the habit of initial the first letter for file name or folder name in Windows. But now I work on Ubuntu, and I found that all file name and folder name are lowercase in addition to the default folder such as Music, Movie and so on. And then I realize that in Linux world, most peoloe like to use all lowercase to name their files and folders for two reasons (1. Linux is Case sensitive. 2. It is fast for shell command.). And after work, when I switch from Linux to Windows, I confuse to use all lowercase or the first letter uppercase style to name my files in Windows. I'm caught in a dilemma. I think that all lowercase is more efficiency but the first letter uppercase is more readable. I thought for a long time and want to come up with a good answer to blance the two style name conversion. But I failed. I want to ask you that how you balance the uppercase or lowercase habbit in Windows, Mac, Linux between work and personal life style? Thank you very much! (My current solution is that when I am in Linux, I use all lowercase for files and folders, but when I am in Windows and Mac OS X, I couldn't find a good reason to convince me to use all lowercase ( I think in Windows and Mac OS X, the first letter uppercase style for me is more readable and beautiful).

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  • How do programers balance the upper or lower case style to name file or folder between work and life?

    - by sojyq
    I am a programmer from China. And I like to use English words to name my files and folders Whether it is for work or life. For example, suck as Movie, Work, QtProjects, Music and so on.And I keep the habit of initial the first letter for file name or folder name in Windows. But now I work on Ubuntu, and I found that all file name and folder name are lowercase in addition to the default folder such as Music, Movie and so on. And then I realize that in Linux world, most peoloe like to use all lowercase to name their files and folders for two reasons (1. Linux is Case sensitive. 2. It is fast for shell command.). And after work, when I switch from Linux to Windows, I confuse to use all lowercase or the first letter uppercase style to name my files in Windows. I'm caught in a dilemma. I think that all lowercase is more efficiency but the first letter uppercase is more readable. I thought for a long time and want to come up with a good answer to blance the two style name conversion. But I failed. I want to ask you that how you balance the uppercase or lowercase habbit in Windows, Mac, Linux between work and personal life style? Thank you very much! (My current solution is that when I am in Linux, I use all lowercase for files and folders, but when I am in Windows and Mac OS X, I couldn't find a good reason to convince me to use all lowercase ( I think in Windows and Mac OS X, the first letter uppercase style for me is more readable and beautiful).

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  • Boost.Program_Options not working with short options

    - by inajamaica
    I have the following options_description: po::options_description config("Configuration File or Command Line"); config.add_options() ("run-time,t", po::value(&runTime_)-default_value(1440.0), "set max simulation duration") ("starting-iteration,i", po::value(&startingIteration_)-default_value(1), "set starting simulation iteration") ("repetitions,r", po::value(&repetitions_)-default_value(100), "set number of iterations") ... ; As you can see the three shown have a long,short names employed. The long versions all work. However, none of the short ones do, and each time I try a -t 12345.0 or a -i 12345, etc., I get the following from Program_Options: std::logic_error: in option 'starting-iteration': invalid option value I'm using Boost 1.42 on Win32. Any thoughts on what might be going on here? Thanks!

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  • Preparing a MySQL INSERT/UPDATE statement with DEFAULT values

    - by Raveren
    Quoting MySQL INSERT manual - same goes for UPDATE: Use the keyword DEFAULT to set a column explicitly to its default value. This makes it easier to write INSERT statements that assign values to all but a few columns, because it enables you to avoid writing an incomplete VALUES list that does not include a value for each column in the table. Otherwise, you would have to write out the list of column names corresponding to each value in the VALUES list. So in short if I write INSERT INTO table1 (column1,column2) values ('value1',DEFAULT); A new row with column2 set as its default value - whatever it may be - is inserted. However if I prepare and execute a statement in PHP: $statement = $pdoObject-> prepare("INSERT INTO table1 (column1,column2) values (?,?)"); $statement->execute(array('value1','DEFAULT')); The new row will contain 'DEFAULT' as its text value - if the column is able to store text values. Now I have written an abstraction layer to PDO (I needed it) and to get around this issue am considering to introduce a const DEFAULT_VALUE = "randomstring"; So I could execute statements like this: $statement->execute(array('value1',mysql::DEFAULT_VALUE)); And then in method that does the binding I'd go through values that are sent to be bound and if some are equal to self::DEFAULT_VALUE, act accordingly. I'm pretty sure there's a better way to do this. Has someone else encountered similar situations?

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  • DropDownList Value not changing with UpdatePanel and ModalPopupExtender

    - by Richard
    Greetings, I have an asp.net webpage with an modalpopupextender inside of an updatepanel. When I click Ok on the popup, I can get the textbox values from the popup just fine, but the DropDownLists have the old/default value, not the new value I have selected for them. All the controls on the popup are set to enableviewstate = true, and autopostback = false (I just want to make the trip to the server when I click the ok button, not every time I change the value of the popups). Here is the relevant code. ========================== Client Side <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:Panel ID="EditIssuePanel" runat="server" CssClass="modalPopup" Style="display:block;" > <table style="width:500px;"> <tr style="height:50px;"> <td colspan="2" align="center"> <asp:Label ID="lblEditIssueHeader" runat="server" Text="Edit Issue"></asp:Label> </td> </tr> <tr style="height:30px;"> <td class="labelscolumn"> <asp:Label ID="lblIssueName" runat="server" Text="Name:"></asp:Label> </td> <td class="datacolumn"> <asp:TextBox ID="txtName" runat="server" Width="250px" MaxLength="50"></asp:TextBox> </td> </tr> <tr style="height:30px;"> <td class="labelscolumn"> <asp:Label ID="lblDescription" runat="server" Text="Description:"></asp:Label> </td> <td class="datacolumn"> <asp:TextBox ID="txtDescription" runat="server" Width="250px" MaxLength="1000"></asp:TextBox> </td> </tr> <tr style="height:30px;"> <td class="labelscolumn"> <asp:Label ID="lblType" runat="server" Text="Type:"></asp:Label> </td> <td class="datacolumn"> <asp:DropDownList ID="ddlType" runat="server"> <asp:ListItem Selected="True" Value="B">Bug</asp:ListItem> <asp:ListItem Value="R">Request</asp:ListItem> <asp:ListItem Value="O">Other</asp:ListItem> </asp:DropDownList> </td> </tr> <tr style="height:30px;"> <td class="labelscolumn"> <asp:Label ID="lblStatus" runat="server" Text="Status:"></asp:Label> </td> <td class="datacolumn"> <asp:DropDownList ID="ddlStatus" runat="server"> <asp:ListItem Selected="True" Value="L">Logged</asp:ListItem> <asp:ListItem Value="I">In Process</asp:ListItem> <asp:ListItem Value="C">Complete</asp:ListItem> </asp:DropDownList> &nbsp; </td> </tr> <tr style="height:30px;"> <td class="labelscolumn"> <asp:Label ID="lblPriority" runat="server" Text="Priority:"></asp:Label> </td> <td class="datacolumn"> <asp:DropDownList ID="ddlPriority" runat="server" EnableViewState="true" AutoPostBack="false"> <asp:ListItem Selected="True" Value="L">Low</asp:ListItem> <asp:ListItem Value="M">Medium</asp:ListItem> <asp:ListItem Value="H">High</asp:ListItem> </asp:DropDownList> &nbsp;</td> </tr> <tr style="height:30px"> <td class="labelscolumn">Logger</td> <td class="datacolumn"> <asp:Label ID="lblEnteredByClientUserID" runat="server" Text=""></asp:Label> </td> </tr> <tr style="height:30px;"> <td class="labelscolumn"> <asp:Label ID="lblDateResolutionRequested" runat="server" Text="Requested Complete Date:"></asp:Label> </td> <td class="datacolumn"> <igsch:WebDateChooser ID="wdcRequestCompleteDate" runat="server"> </igsch:WebDateChooser> &nbsp;</td> </tr> <tr style="height:30px"> <td class="labelscolumn">Logged Date</td> <td class="datacolumn"> <asp:Label ID="lblLoggedDate" runat="server" Text=""></asp:Label> </td> </tr> <tr style="height:30px"> <td class="labelscolumn">In Process Date</td> <td class="datacolumn"> <asp:Label ID="lblInProcessDate" runat="server" Text=""></asp:Label> </td> </tr> <tr style="height:30px"> <td class="labelscolumn">Resolved Date</td> <td class="datacolumn"> <asp:Label ID="lblResolvedDate" runat="server" Text=""></asp:Label> </td> </tr> <tr style="height:30px;"> <td class="labelscolumn" valign="top"> <asp:Label ID="lblEmailCCList" runat="server" Text="Email CC:"></asp:Label> </td> <td class="datacolumn"> <asp:TextBox ID="txtEmailCCList" runat="server" MaxLength="2000" Rows="0" TextMode="MultiLine" Height="83px" Width="250px"></asp:TextBox> &nbsp;</td> </tr> <tr> <td> <asp:Label ID="lblIssueID" runat="server" Text="" Visible="false"></asp:Label> <asp:Label ID="lblClientID" runat="server" Text="" Visible="false"></asp:Label> </td> <td align="right"> <asp:Button ID="btnEditOk" runat="server" Text="Ok" onclick="btnEditOk_Click"/>&nbsp;&nbsp; <asp:Button ID="btnEditCancel" runat="server" Text="Cancel" onclick="btnEditCancel_Click" />&nbsp;&nbsp;&nbsp;&nbsp; </td> </tr> </table> </asp:Panel> . . . THEN THERE IS A WEBGRID HERE. . . This modal popupextender here got mangled. I cant get stackoverflow to show it right. It shows the properties here though. " BackgroundCssClass="modalBackground" DropShadow="true" OkControlID="btnEditOk" CancelControlID="btnEditCancel" Animations="" </ContentTemplate> </asp:UpdatePanel> ========================================= Server Side protected void btnEditOk_Click(object sender, EventArgs e) { IssueDAO issueDAO = new IssueDAO(); string client = "Eichleay"; string name = null; string description = null; string type = null; string status = null; DateTime? resolvedDate = null; string enteredByClientUserName = User.Identity.Name.ToString(); DateTime? loggedDate = DateTime.Now; DateTime? inProcessDate = null; DateTime? completeDate = null; DateTime? requestCompleteDate = null; string priority = null; int? prioritySort = null; string emailCCList = null; name = txtName.Text.Substring(txtName.Text.Length > 0 ? 1 : 0, (txtName.Text.Length > 0 ? txtName.Text.Length : 1) - 1); description = txtDescription.Text.Substring(txtDescription.Text.Length > 0 ? 1 : 0, (txtDescription.Text.Length == 0 ? 1 : txtDescription.Text.Length) - 1); type = ddlType.SelectedValue; status = ddlStatus.SelectedValue; resolvedDate = string.IsNullOrEmpty(lblResolvedDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblResolvedDate.Text)); inProcessDate = string.IsNullOrEmpty(lblInProcessDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblInProcessDate.Text)); completeDate = string.IsNullOrEmpty(lblResolvedDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblResolvedDate.Text)); requestCompleteDate = wdcRequestCompleteDate.Value == null ? null : string.IsNullOrEmpty(wdcRequestCompleteDate.Value.ToString()) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(wdcRequestCompleteDate.Value.ToString())); priority = ddlPriority.SelectedValue; emailCCList = txtEmailCCList.Text.Substring(txtEmailCCList.Text.Length > 0 ? 1 : 0, (txtEmailCCList.Text.Length > 0 ? txtEmailCCList.Text.Length : 1) - 1); if (lblEditIssueHeader.Text.Substring(0, 3) == "New") { issueDAO.InsertIssue(client, name, description, type, status, resolvedDate, enteredByClientUserName, loggedDate, inProcessDate, completeDate, requestCompleteDate, priority, prioritySort, emailCCList); } else { Issue issue = new Issue(Convert.ToInt32(lblIssueID.Text), lblClientID.Text, txtName.Text.Substring(txtName.Text.Length > 0 ? 1 : 0, (txtName.Text.Length > 0 ? txtName.Text.Length : 1) - 1), txtDescription.Text.Substring(txtDescription.Text.Length > 0 ? 1 : 0, (txtDescription.Text.Length == 0 ? 1 : txtDescription.Text.Length) - 1), ddlType.SelectedValue, ddlStatus.SelectedValue, string.IsNullOrEmpty(lblResolvedDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblResolvedDate.Text)), lblEnteredByClientUserID.Text, string.IsNullOrEmpty(lblLoggedDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblLoggedDate.Text)), string.IsNullOrEmpty(lblInProcessDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblInProcessDate.Text)), string.IsNullOrEmpty(lblResolvedDate.Text) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(lblResolvedDate.Text)), string.IsNullOrEmpty(wdcRequestCompleteDate.Value.ToString()) == true ? null : new Nullable<DateTime>(Convert.ToDateTime(wdcRequestCompleteDate.Value.ToString())), ddlPriority.SelectedValue, null, txtEmailCCList.Text.Substring(txtEmailCCList.Text.Length > 0 ? 1 : 0, (txtEmailCCList.Text.Length > 0 ? txtEmailCCList.Text.Length : 1) - 1)); issueDAO.UpdateIssue(issue); } // wdgIssues.ClearDataSource(); // UpdatePanel1.Update(); lblIssueID.Text = null; lblClientID.Text = null; txtName.Text = null; txtDescription.Text = null; ddlType.SelectedValue = null; ddlStatus.SelectedValue = null; lblLoggedDate.Text = null; lblInProcessDate.Text = null; lblResolvedDate.Text = null; wdcRequestCompleteDate.Value = null; ddlPriority.SelectedValue = null; txtEmailCCList.Text = null; }

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  • Stupid problem with Javascript calculations and postbacks

    - by rockinthesixstring
    I'm working on an ASP.NET web app where I'm using a Wizard to take the client through a large series of steps. One of the steps includes calculating a bunch of numbers on the fly... the numbers calculate properly but when I click "next" and then go back again... some of the numbers are not retained. Here is the calculation function function CalculateFields() { txtSellingPrice = document.getElementById('<%=txtSellingPrice.ClientID %>'); txtBalanceSheet = document.getElementById('<%=txtBalanceSheet.ClientID %>'); txtDownPayment = document.getElementById('<%=txtDownPayment.ClientID %>'); txtSusEarn = document.getElementById('<%=txtSusEarn.ClientID %>'); txtSusRev = document.getElementById('<%=txtSusRev.ClientID %>'); txtBalanceMult = document.getElementById('<%=txtBalanceMult.ClientID %>'); txtGoodwillMult = document.getElementById('<%=txtGoodwillMult.ClientID %>'); txtSellingPriceMult = document.getElementById('<%=txtSellingPriceMult.ClientID %>'); txtGoodWill = document.getElementById('<%=txtGoodWill.ClientID %>'); txtBalance = document.getElementById('<%=txtBalance.ClientID %>'); chkTakeBack = document.getElementById('<%=chkTakeBack.ClientID %>'); txtVendorTakeBackPercentage = document.getElementById('<%=txtVendorTakeBackPercentage.ClientID %>'); txtSusEarnPercentage = document.getElementById('<%=txtSusEarnPercentage.ClientID %>'); txtBalanceMultPercentage = document.getElementById('<%=txtBalanceMultPercentage.ClientID %>'); txtGoodwillMultPercentage = document.getElementById('<%=txtGoodwillMultPercentage.ClientID %>'); txtSellingPriceMultPercentage = document.getElementById('<%=txtSellingPriceMultPercentage.ClientID %>'); var regexp = /[$,]/g; //Empty value checks SellingPrice = (SellingPrice == "" ? "$0" : SellingPrice); BalanceSheet = (BalanceSheet == "" ? "$0" : BalanceSheet); DownPayment = (DownPayment == "" ? "$0" : DownPayment); susearn = (susearn == "" ? "$0" : susearn); susrev = (susrev == "" ? "$0" : susrev); balmult = (balmult == "" ? "$0" : balmult); goodmult = (goodmult == "" ? "$0" : goodmult); sellmult = (sellmult == "" ? "$0" : sellmult); //Replace $ with String.Empty SellingPrice = txtSellingPrice.value.replace(regexp, ""); BalanceSheet = txtBalanceSheet.value.replace(regexp, ""); DownPayment = txtDownPayment.value.replace(regexp, ""); susearn = txtSusEarn.value.replace(regexp, ""); susrev = txtSusRev.value.replace(regexp, ""); balmult = txtBalanceMult.value.replace(regexp, ""); goodmult = txtGoodwillMult.value.replace(regexp, ""); sellmult = txtSellingPriceMult.value.replace(regexp, ""); //Set the new values txtGoodWill.value = "$" + (SellingPrice - BalanceSheet); txtBalance.value = "$" + (SellingPrice - DownPayment); txtSellingPriceMult.value = "$" + SellingPrice; txtGoodwillMult.value = "$" + (SellingPrice - BalanceSheet); txtBalanceMult.value = "$" + BalanceSheet; if (chkTakeBack.checked == 1) { txtVendorTakeBackPercentage.value = Math.round((SellingPrice - DownPayment) / SellingPrice * 100); } else { txtVendorTakeBackPercentage.value = "0"; } if (!(susearn == "") && !(susearn == "0") && !(susearn == "$0")) { txtSusEarnPercentage.value = Math.round(susearn / susrev * 100); txtBalanceMultPercentage.value = Math.round(balmult / susearn); txtGoodwillMultPercentage.value = Math.round(goodmult / susearn); txtSellingPriceMultPercentage.value = Math.round(sellmult / susearn); } else { txtSusEarnPercentage.value = "0"; txtBalanceMultPercentage.value = "0"; txtGoodwillMultPercentage.value = "0"; txtSellingPriceMultPercentage.value = "0"; } } all of these calculate properly and retain their value across postbacks txtGoodWill.value = "$" + (SellingPrice - BalanceSheet); txtBalance.value = "$" + (SellingPrice - DownPayment); txtSellingPriceMult.value = "$" + SellingPrice; txtGoodwillMult.value = "$" + (SellingPrice - BalanceSheet); txtBalanceMult.value = "$" + BalanceSheet; These ones however do not retain their value across postbacks if (chkTakeBack.checked == 1) { txtVendorTakeBackPercentage.value = Math.round((SellingPrice - DownPayment) / SellingPrice * 100); } else { txtVendorTakeBackPercentage.value = "0"; } if (!(susearn == "") && !(susearn == "0") && !(susearn == "$0")) { txtSusEarnPercentage.value = Math.round(susearn / susrev * 100); txtBalanceMultPercentage.value = Math.round(balmult / susearn); txtGoodwillMultPercentage.value = Math.round(goodmult / susearn); txtSellingPriceMultPercentage.value = Math.round(sellmult / susearn); } else { txtSusEarnPercentage.value = "0"; txtBalanceMultPercentage.value = "0"; txtGoodwillMultPercentage.value = "0"; txtSellingPriceMultPercentage.value = "0"; } The txtVendorTakeBackPercentage always comes back BLANK and the other three always come back as 0 I'm firing these functions by using the onkeyup event within the form fields. If Not Page.IsPostBack Then txtSellingPrice.Attributes.Add("onkeyup", "CalculateFields()") txtBalanceSheet.Attributes.Add("onkeyup", "CalculateFields()") txtDownPayment.Attributes.Add("onkeyup", "CalculateFields()") txtSusRev.Attributes.Add("onkeyup", "CalculateFields()") txtSusEarn.Attributes.Add("onkeyup", "CalculateFields()") End If any thoughts/help/direction would be greatly appreciated.

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  • Naming my application in android

    - by Sephy
    Hi, I think i'm getting senile because I was convinced that to give a name to your application, you had to fill this part of the manifest : <application android:icon="@drawable/icon" android:label="MyApplicationName"> However for a reason I don't understand, my application gets the name of my first activity, in which I load data, henceforce, It is called "Loading"...(defined as follows in the manifest) <activity android:name="AccueilSplash" android:label="Loading"> Any idea why that is?

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  • Would I really want to return the minimum date?

    - by Clay Shannon
    An old work colleague used to quote his father about tools, "You have to be smarter than it." In the code below, Resharper is telling me, "Value assigned is not used in any execution path" (pointing to the first line). If I accept its offer of help, dt is not assigned a value ("today"). Is this a case where "I have to be smarter than it" and ignore their warning, or is this a case where the tool is smarter than me, and I'm just not understanding it? My take on the situation is that if the if statement fails, the current date is returned (the default value I want), but if I acquiesce to Resharper's "demands" it would return the default value for Datetime, which is the minimum date, which I assume is something like 7/4/1776 or 1/1/0000 or so. DateTime dt = DateTime.Now; if (!(DateTime.TryParse(substr, out dt))) { using (var dtpDlgForm = new ReturnDate("Please select the Date that the file was created:")) { if (dtpDlgForm.ShowDialog() == DialogResult.OK) { dt = dtpDlgForm.ReturnVal; } } } return dt;

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  • VB.NET Function Return

    - by waves
    In order to return a value from a VB.NET function one can assign a value to the "Functions Name" or use "return value." I sometimes see these inter-mixed in the same function. Personally, I prefer the return. My question is, what is the internal difference, if any, between the two?

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  • jetty - javax.naming.InvalidNameException: A flat name can only have a single component

    - by Dinesh Pillay
    I have been breaking my head against this for too much time now. I'm trying to get maven + jetty + jotm to play nice but it looks like its too much to ask for :( Below is my jetty.xml:- <?xml version="1.0"?> <!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse.org/jetty/configure.dtd"> <Configure id="Server" class="org.mortbay.jetty.Server"> <New id="jotm" class="org.objectweb.jotm.Jotm"> <Arg type="boolean">true</Arg> <Arg type="boolean">false</Arg> <Call id="tm" name="getTransactionManager" /> <Call id="ut" name="getUserTransaction" /> </New> <New class="org.mortbay.jetty.plus.naming.Resource"> <Arg /> <Arg>javax.transaction.TransactionManager</Arg> <Arg><Ref id="ut" /></Arg> </New> <New id="tx" class="org.mortbay.jetty.plus.naming.Transaction"> <Arg><Ref id="ut" /></Arg> </New> <New class="org.mortbay.jetty.plus.naming.Resource"> <Arg>myxadatasource</Arg> <Arg> <New id="myxadatasourceA" class="org.enhydra.jdbc.standard.StandardXADataSource"> <Set name="DriverName">org.apache.derby.jdbc.EmbeddedDriver</Set> <Set name="Url">jdbc:derby:protodb;create=true</Set> <Set name="User"></Set> <Set name="Password"></Set> <Set name="transactionManager"> <Ref id="tm" /> </Set> </New> </Arg> </New> <New id="protodb" class="org.mortbay.jetty.plus.naming.Resource"> <Arg>jdbc/protodb</Arg> <Arg> <New class="org.enhydra.jdbc.pool.StandardXAPoolDataSource"> <Arg> <Ref id="myxadatasourceA" /> </Arg> <Set name="DataSourceName">myxadatasource</Set> </New> </Arg> </New> And this is the maven plugin configuration:- <plugin> <groupId>org.mortbay.jetty</groupId> <artifactId>maven-jetty-plugin</artifactId> <configuration> <scanIntervalSeconds>10</scanIntervalSeconds> <stopKey>ps</stopKey> <stopPort>7777</stopPort> <webAppConfig> <contextPath>/ps</contextPath> </webAppConfig> <connectors> <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector"> <port>7070</port> <maxIdleTime>60000</maxIdleTime> </connector> </connectors> <jettyConfig>src/main/webapp/WEB-INF/jetty.xml</jettyConfig> </configuration> <executions> <execution> <id>start-jetty</id> <phase>pre-integration-test</phase> <goals> <goal>run</goal> </goals> <configuration> <scanIntervalSeconds>0</scanIntervalSeconds> <daemon>true</daemon> </configuration> </execution> <execution> <id>stop-jetty</id> <phase>post-integration-test</phase> <goals> <goal>stop</goal> </goals> </execution> </executions> <dependencies> <dependency> <groupId>org.apache.derby</groupId> <artifactId>derby</artifactId> <version>10.6.1.0</version> </dependency> <dependency> <groupId>jotm</groupId> <artifactId>jotm</artifactId> <version>2.0.10</version> <exclusions> <exclusion> <groupId>javax.resource</groupId> <artifactId>connector</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>com.experlog</groupId> <artifactId>xapool</artifactId> <version>1.5.0</version> </dependency> <dependency> <groupId>javax.resource</groupId> <artifactId>connector-api</artifactId> <version>1.5</version> </dependency> <dependency> <groupId>javax.transaction</groupId> <artifactId>jta</artifactId> <version>1.0.1B</version> </dependency> <!-- <dependency> <groupId>javax.jts</groupId> <artifactId>jts</artifactId> <version>1.0</version> </dependency> --> </dependencies> </plugin> I am using maven-jetty-plugin-6.1.24 cause I couldn't get the later one's to work either. When I execute this I get the following exception:- 2010-06-16 09:03:13.423:WARN::Config error at javax.transaction.TransactionManager java.lang.reflect.InvocationTargetException [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Failure A flat name can only have a single component [INFO] ------------------------------------------------------------------------ Caused by: javax.naming.InvalidNameException: A flat name can only have a single component at javax.naming.NameImpl.addAll(NameImpl.java:621) at javax.naming.CompoundName.addAll(CompoundName.java:442) at org.mortbay.jetty.plus.naming.NamingEntryUtil.makeNamingEntryName(NamingEntryUtil.java:136) at org.mortbay.jetty.plus.naming.NamingEntry.save(NamingEntry.java:196) at org.mortbay.jetty.plus.naming.NamingEntry.(NamingEntry.java:58) at org.mortbay.jetty.plus.naming.Resource.(Resource.java:34) ... 31 more Help!

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  • Hidden Field losing its Value on postback

    - by Ratan
    I have a ascx page where I am using a hidden field to store the value of a the drop down box as it is generated using a google address finder. My problem is that when I try to store the value directly in the hidden field : hfDdlVerifyID.Value = ddlVerifySS.SelectedValue; in the event of a button click, the value is stored but on postback is lost again. Whereas, if i try to use Scriptmanager to do it, nothing is stored. getBuild.AppendLine("$get('" + hfDdlVerifyID.ClientID + "').value = $get('" + ddlVerifySS.ClientID + ").value;"); ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "storeHidden", getBuild.ToString(), true); // Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "storeHidden", getBuild.ToString(), true); string test = hfDdlVerifyID.Value.ToString(); The ascx page is : <asp:UpdatePanel ID = ddlUpdate runat="server"> <ContentTemplate> <asp:Panel ID="pVerify" runat="server"> <br /> <fieldset> <legend> <asp:Literal ID="lVerify" runat="server" /> </legend> <asp:CheckBox ID ="cbVerify" runat ="server" Text ="Use the value from the following list, (Uncheck to accept address as it is)." Checked ="true" /> <br /> <asp:DropDownList ID="ddlVerifySS" runat="server" onselectedindexchanged="ddlVerifySS_SelectIndexChange" /> <asp:HiddenField id ="hfDdlVerifyID" runat ="server" /> </fieldset> </asp:Panel> </ContentTemplate> </asp:UpdatePanel> <padrap:Button ID ="bVerify" runat ="server" CssClass ="btn" OnClick ="bVerify_Click" Text ="Verify Address" /> <asp:Button ID ="btnSubSite" runat ="server" text ="Save" CssCLass ="btn" OnClick ="save_btn_Click_subSite" onLoad="ddlVerify_Load" />

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  • Trend analysis using iterative value increments

    - by Dave Jarvis
    We have configured iReport to generate the following graph: The real data points are in blue, the trend line is green. The problems include: Too many data points for the trend line Trend line does not follow a Bezier curve (spline) The source of the problem is with the incrementer class. The incrementer is provided with the data points iteratively. There does not appear to be a way to get the set of data. The code that calculates the trend line looks as follows: import java.math.BigDecimal; import net.sf.jasperreports.engine.fill.*; /** * Used by an iReport variable to increment its average. */ public class MovingAverageIncrementer implements JRIncrementer { private BigDecimal average; private int incr = 0; /** * Instantiated by the MovingAverageIncrementerFactory class. */ public MovingAverageIncrementer() { } /** * Returns the newly incremented value, which is calculated by averaging * the previous value from the previous call to this method. * * @param jrFillVariable Unused. * @param object New data point to average. * @param abstractValueProvider Unused. * @return The newly incremented value. */ public Object increment( JRFillVariable jrFillVariable, Object object, AbstractValueProvider abstractValueProvider ) { BigDecimal value = new BigDecimal( ( ( Number )object ).doubleValue() ); // Average every 10 data points // if( incr % 10 == 0 ) { setAverage( ( value.add( getAverage() ).doubleValue() / 2.0 ) ); } incr++; return getAverage(); } /** * Changes the value that is the moving average. * @param average The new moving average value. */ private void setAverage( BigDecimal average ) { this.average = average; } /** * Returns the current moving average average. * @return Value used for plotting on a report. */ protected BigDecimal getAverage() { if( this.average == null ) { this.average = new BigDecimal( 0 ); } return this.average; } /** Helper method. */ private void setAverage( double d ) { setAverage( new BigDecimal( d ) ); } } How would you create a smoother and more accurate representation of the trend line?

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  • Passing Control's Value to Modal Popup

    - by Sherwin Valdez
    Hello, Just would like know how to pass textbox value to a modal popup after clicking a button using ModalPopUpExtender in ASP.NET, I've tried these codes but seems that I have no luck :( <script runat="server"> protected void Page_Load(object sender, EventArgs e) { Button1.Attributes.Add("onclick", "showModalPopup(); return false;"); } </script> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="Button" OnClick='showModalPopup(); return false;' /> <cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="Button1" PopupControlID="Panel1" CancelControlID="btnCancel" OkControlID="btnOkay" BackgroundCssClass="ModalPopupBG"> </cc1:ModalPopupExtender> <asp:Panel ID="Panel1" Style="display: none" runat="server"> <div class="HellowWorldPopup"> <div class="PopupHeader" id="PopupHeader"> Header</div> <div class="PopupBody"> <asp:Label ID="Label1" runat="server"></asp:Label> </div> <div class="Controls"> <input id="btnOkay" type="button" value="Done" /> <input id="btnCancel" type="button" value="Cancel" /> </div> </div> </asp:Panel> javascript function showModalPopup() { //show the ModalPopupExtender var value; value = document.getElementById("TextBox1").value; $get("<%=Label1.ClientID %>").value = value; $find("<%=ModalPopupExtender1.ClientID %>").show(); } I wonder what I miss out :(, Thanks and I hope someone could help me :)

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  • Trying to access a specific option value to generate a popup window

    - by Isaac
    I am trying to use a click event to generate a popup window based off of the specific value chosen. I am having trouble with the if statement and trying to access each specific option value. Can any of you give me some hints? <select id="offices"> <option value="Choose an Office">Choose an Office</option> <option value="Residential Education (ResEd)" >Residential Education (ResEd)</option> <option value="Dean of Students">Dean of Students</option> <option value="Office of Student Affairs">Office of Student Affairs</option> <option value="Vice-Provost of Student Affairs">Vice-Provost of Student Affairs</option> </select> </div> function display(){ var officearray = [{ Office: "Residential Education (ResEd)", ID: "725-2800", Description: "The Office of Residential Education is responsible for developing the policies, programs, and staffing which support the intellectual, educational, and community-building activities in student residences. Second Floor. " }, { Office: "Dean of Students", ID: "723-7833", Description: "The Dean of Students office is composed of 13 individual administrative units that are concerned with the general welfare of both undergraduate and graduate students, in and out of the classroom. Second floor." }, { Office: "Office of Student Activities (OSA)", ID: "723-2733", Description: "Services for student organizations, student-initiated major events and programs, and fraternities and sororities. Second floor." }, { Office: "Vice-Provost of Student Affairs", ID: "725-0911", Description: "The Vice Provost for Student Affairs is responsible to the Provost for providing services and programs to undergraduate and graduate students in support of the academic mission of the University. Second floor." }] for(var i = 0; i < officearray.length; i++) { var o = document.getElementById("offices") var oString = o.options[o.selectedIndex].value; newwindow2 = window.open('', 'name', 'height=200, width=150') var tmp = newwindow2.document if (oString == officearray[i].Office) { tmp.writeln(officearray[i].Description) } } } document.getElementsByTagName('option').addEventListener("click",display,false)

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  • Setting the value of a radio button with JQuery (ASP.NET MVC)

    - by Mario
    I have 2 "lists" of (4) radio buttons {value = "0", "1", "2", "3"} in all lists. The first list needs to drive the second list (which may occur multiple times). So if an option is selected in the first list, the SAME option is selected in the second list. It sounds weird, but it has a purpose. The first list is more of a "select all" type of list, and the second list is an individual selection list(s). I have the value of the "selectall" list via JQuery: $("#selectalllist").change(function() { var str = $('input[name=selectall]:checked').val(); $(".radiolist").attr('checked', str); //This is my thinking }); The current selected value is stored in the str variable, and that is seemingly correct (I used alert to tell me what is stored, and it comes up what I expect). I just need to set the value of the next set of lists. The second line of the code I thought would set the checked value of $(".radiolist") to the stored value, but it ALWAYS set the value to the last entry (value = "3"). I'm wondering if I have the wrong attribute in the .attr('', str) call? Any thoughts?

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  • WPF Toolkit: Nullable object must have a value

    - by Via Lactea
    Hi All, I am trying to create some line charts from a dataset and getting an error (WPF+WPF Toolkit + C#): Nullable object must have a value Here is a code that I use to add some data points to the chart: ObservableCollection points = new ObservableCollection(); foreach (DataRow dr in dc.Tables[0].Rows) { points.Add(new VelChartPoint() { Label = dr[0].ToString(), Value = double.Parse(dr[1].ToString()) }); } Here is a class VelChartPoint public class VelChartPoint : VelObject, INotifyPropertyChanged { public DateTime Date { get; set; } public string Label { get; set; } private double _Value; public double Value { get { return _Value; } set { _Value = value; var handler = PropertyChanged; if (null != handler) { handler.Invoke(this, new PropertyChangedEventArgs("Value")); } } } public string FieldName { get; set; } public event PropertyChangedEventHandler PropertyChanged; public VelChartPoint() { } } So the problem occures in this part of the code points.Add(new VelChartPoint { Name = dc.Tables[0].Rows[0][0].ToString(), Value = double.Parse(dc.Tables[0].Rows[0][1].ToString()) } ); I've made some tests, here are some results i've found out. This part of code does'nt work for me: string[] labels = new string[] { "label1", "label2", "label3" }; foreach (string label in labels) { points.Add(new VelChartPoint { Name = label, Value = 500.0 } ); } But this one works fine: points.Add(new VelChartPoint { Name = "LabelText", Value = double.Parse(dc.Tables[0].Rows[0][1].ToString()) } ); Please, help me to solve this error.

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  • UISlider how to set the initial value

    - by slim
    I'm pretty new at this iphone dev stuff and i'm working on some existing code at a company. The uislider i'm trying to set the initial value on is actually in a UITableViewCell and is a custom control. I was thinking in the cell init cell = (QuantitiesCell *)[self loadCellWithNibName:@"QuantitiesCell" forTableView:ltableView withStyle:UITableViewCellStyleDefault]; i could just call something like ((QuantitiesCell *)cell).value = 5; The actual QuantitiesCell class has the member value and the following functions -(void)initCell;{ if (listOfValues == nil) { [self initListOfValues]; } quantitiesSLider.maximumValue = [listOfValues count]-1; quantitiesSLider.minimumValue = 0; quantitiesSLider.value = self.value; } -(void)initListOfValues;{ listOfValues = [[NSMutableArray alloc] initWithCapacity:10]; int j =0; for (float i = minValue; i <= maxValue+increment; i=i+increment) { [listOfValues addObject:[NSNumber numberWithFloat: i]]; if (i == value) { quantitiesSLider.value = j; } j++; } } like i said, i'm pretty new at this so if i need to post more of the code to show whats going to get help, let me know, This slider always is defaulting to 1, the slider ranges usually from 1-10, and i want to set it to a specific value of the item i'm trying to edit.

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  • Programmatically change an EditorGrid's cell value

    - by Snowright
    Hi, I have an Editor Grid where if a specific cell is in focus (is being edited), a window containing a tree panel pops up allowing the user to choose a node from the treepanel as the new value of the cell. This way, the user isn't actually editing the cell in question, but is using the window to choose the new value. However, I am having difficulties setting the value of the cell in question programmatically. Below is the code I use to set the grid up, including the column model that chooses what editor to use for a cell depending on the value type: var editorCM = new Ext.grid.ColumnModel({ //config ,editors : { //rest of editors 'id' : new Ext.grid.GridEditor(new Ext.form.TextField({readOnly : true})) } ,getCellEditor : function(col, row) { //choose editor depending on the type value of a cell } }) var editorGrid = new Ext.grid.EditorGridPanel({ //rest of config ,cm : editorCM }) Below is my code to change the cell's value once the user chooses from the treepanel. function submitNode(newValue) { var temp = editorGrid.GetSelectionModel().getSelectedCell(); //returns array containing column and row position of selected cell, which value we want to change. //temp[1] = column index, temp[0] = row index //Gets the cell editor at specific position and sets new value for that cell editorGrid.getColumnModel().getCellEditor(temp[1], temp[0]).setValue(newValue); } I've also tried a few other ways (all including setValue(newValue)), but have come up empty handed. I've looked through the API and the ExtJS forums for any clue but have also come up empty handed.

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  • JPA joined column allow every value...

    - by Fabio Beoni
    I'm testing JPA, in a simple case File/FileVersions tables (Master/Details), with OneToMany relation, I have this problem: in FileVersions table, the field "file_id" (responsable for the relation with File table) accepts every values, not only values from File table. How can I use the JPA mapping to limit the input in FileVersion.file_id only for values existing in File.id? My class are File and FileVersion: FILE CLASS @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name="FILE_ID") private Long id; @Column(name="NAME", nullable = false, length = 30) private String name; //RELATIONS ------------------------------------------- @OneToMany(mappedBy="file", fetch=FetchType.EAGER) private Collection <FileVersion> fileVersionsList; //----------------------------------------------------- FILEVERSION CLASS @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name="VERSION_ID") private Long id; @Column(name="FILENAME", nullable = false, length = 255) private String fileName; @Column(name="NOTES", nullable = false, length = 200) private String notes; //RELATIONS ------------------------------------------- @ManyToOne(fetch=FetchType.EAGER) @JoinColumn(name="FILE_ID", referencedColumnName="FILE_ID", nullable=false) private File file; //----------------------------------------------------- and this is the FILEVERSION TABLE CREATE TABLE `JPA-Support`.`FILEVERSION` ( `VERSION_ID` bigint(20) NOT NULL AUTO_INCREMENT, `FILENAME` varchar(255) NOT NULL, `NOTES` varchar(200) NOT NULL, `FILE_ID` bigint(20) NOT NULL, PRIMARY KEY (`VERSION_ID`), KEY `FK_FILEVERSION_FILE_ID` (`FILE_ID`) ) ENGINE=MyISAM AUTO_INCREMENT=4 DEFAULT CHARSET=latin1

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  • Unable to get values in ftl from value stack in custom Result Type

    - by Nagadev
    Hello, I am unable retrieve value from value stack in FTL file. Here is the code. Action class holds a property called 'name' private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } public String execute(){ setName("From value stack .. "); return SUCCESS; } FTL code: ${name} Custom result Type deExecute Method Configuration configuration = new Configuration(); String templatePath = "/ftl"; ServletContext context = ServletActionContext.getServletContext(); configuration.setServletContextForTemplateLoading(context, templatePath); configuration.setObjectWrapper(new DefaultObjectWrapper()); Template template = configuration.getTemplate("sample.ftl"); OutputStreamWriter out = new OutputStreamWriter(System.out); template.process(ActionContext.getContext().getValueStack(), out); I am passing the value Stack which contains recently executed Action as well. But FTL is throwing an exception Expression name is undefined on line 1, column 3 in sample.ftl I tried with passing session instead of value stack and I could get the value in FTL. Please suggest me a way to get values from Action class to FTL from value stack. Thanks inadvance.

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  • XSLT: generate multiple object by incrementing attribute and value

    - by Daniel
    Hi, I have a xml as below that I'd like to copy n times while incrementing one of its element and one of its attribute. XML input: <Person position=1> <name>John</name> <number>1</number> <number>1</number> </Person> and I'd like something like below with the number of increment to be a variable. XML output: <Person position=1> <name>John</name> <number>1</number> </Person> <Person position=2> <name>John</name> <number>2</number> </Person> .... <Person position=n> <name>John</name> <number>n</number> </Person> Any clue

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