Search Results

Search found 36013 results on 1441 pages for 'public fields'.

Page 277/1441 | < Previous Page | 273 274 275 276 277 278 279 280 281 282 283 284  | Next Page >

  • How to ask BeanUtils to ignore null values

    - by Calm Storm
    Using Commons beanUtils I would like to know how to ask any converter say the Dateconverter to ignore null values and use null as default. As an example consider a public class, public class X { private Date date1; private String string1; //add public getters and setters } and my convertertest as, public class Apache { @Test public void testSimple() throws Exception { X x1 = new X(), x2 = new X(); x1.setString1("X"); x1.setDate1(null); org.apache.commons.beanutils.BeanUtils.copyProperties(x2, x1); //throws ConversionException System.out.println(x2.getString1()); System.out.println(x2.getDate1()); } } The above throws a NPE since the date happens to be null. This looks a very primitive scenario to me which should be handled by default (as in, I would expect x2 to have null value for date1). The doco tells me that I can ask the converter to do this. Can someone point me as to the best way for doing this ? I dont want to get hold of the Converter and isUseDefault() to be true because then I have to do it for all Date, Enum and many other converters !

    Read the article

  • files build execution order

    - by Mahesh
    Hi, I have a data structure which is as given below: class File { public string Value { get; set; } public File[] Dependencies { get; set; } public bool Change { get; private set; } public File(string value,File[] dependencies) { Value = value; Dependencies = dependencies; Change = false; } } Basically, this data structure follows a typical build execution of files. Each File has a value and a list of dependencies which is again of type File. Every file is exposed with a property called Change which tells whether the file is changed or not. I brainstormed to form a algorithm which goes through all these files and build in an order( i.e typical build process ) but haven't got a better algorithm. Can anyone throw some light on this? Thanks a lot. Mahesh

    Read the article

  • How to recursively serialize an object using reflection ?

    - by Tony
    I want to navigate to the N-th level of an object, and serialize it's properties in String format. For Example: class Animal { public String name; public int weight; public Animal friend; public Set<Animal> children = new HashSet<Animal>() ; } should be serialized like this: {name:"Monkey", weight:200, friend:{name:"Monkey Friend",weight:300 ,children:{...if has children}}, children:{name:"MonkeyChild1",weight:100,children:{... recursively nested}} } And you may probably notice that it is similar to serializing an object to json. I know there're many libs can do this, can you give me some instructive ideas on how to write this?

    Read the article

  • Fluent NHibernate - subclasses with shared reference

    - by ollie
    Edit: changed class names. I'm using Fluent NHibernate (v 1.0.0.614) automapping on the following set of classes (where Entity is the base class provided in the S#arp Architecture framework): public class Car : Entity { public virtual int ModelYear { get; set; } public virtual Company Manufacturer { get; set; } } public class Sedan : Car { public virtual bool WonSedanOfYear { get; set; } } public class Company : Entity { public virtual IList<Sedan> Sedans { get; set; } } This results in the following Configuration (as written to hbm.xml): <class name="Company" table="Companies"> <id name="Id" type="System.Int32" unsaved-value="0"> <column name="`ID`" /> <generator class="identity" /> </id> <bag cascade="all" inverse="true" name="Sedans" mutable="true"> <key> <column name="`CompanyID`" /> </key> <one-to-many class="Sedan" /> </bag> </class> <class name="Car" table="Cars"> <id name="Id" type="System.Int32" unsaved-value="0"> <column name="`ID`" /> <generator class="identity" /> </id> <property name="ModelYear" type="System.Int32"> <column name="`ModelYear`" /> </property> <many-to-one cascade="save-update" class="Company" name="Manufacturer"> <column name="`CompanyID`" /> </many-to-one> <joined-subclass name="Sedan"> <key> <column name="`CarID`" /> </key> <property name="WonSedanOfYear" type="System.Boolean"> <column name="`WonSedanOfYear`" /> </property> </joined-subclass> </class> So far so good! But now comes the ugly part. The generated database tables: Table: Companies Columns: ID (PK, int, not null) Table: Cars Columns: ID (PK, int, not null) ModelYear (int, null) CompanyID (FK, int, null) Table: Sedan Columns: CarID (PK, FK, int, not null) WonSedanOfYear (bit, null) CompanyID (FK, int, null) Instead of one FK for Company, I get two! How can I ensure I only get one FK for Company? Override the automapping? Put a convention in place? Or is this a bug? Your thoughts are appreciated.

    Read the article

  • Javascript OLE Word

    - by Martijn
    I want to show a MS Word environment in an Iframe without all the toobars. The document that is being showed contains input fields. After these fields are filled in, the document must be printed. I have created the print button and want the (filled in) document printed when this button is clicked. I hope you understand want I want and hope you can help out.

    Read the article

  • What should i do to test EasyMock objects when using Generics ? EasyMock

    - by Arthur Ronald F D Garcia
    See code just bellow Our generic interface public interface Repository<INSTANCE_CLASS, INSTANCE_ID_CLASS> { void add(INSTANCE_CLASS instance); INSTANCE_CLASS getById(INSTANCE_ID_CLASS id); } And a single class public class Order { private Integer id; private Integer orderNumber; // getter's and setter's public void equals(Object o) { if(o == null) return false; if(!(o instanceof Order)) return false; // business key if(getOrderNumber() == null) return false; final Order other = (Order) o; if(!(getOrderNumber().equals(other.getOrderNumber()))) return false; return true; } // hashcode } And when i do the following test private Repository<Order, Integer> repository; @Before public void setUp { repository = EasyMock.createMock(Repository.class); Order order = new Order(); order.setOrderNumber(new Integer(1)); repository.add(order); EasyMock.expectLasCall().once(); EasyMock.replay(repository); } @Test public void addOrder() { Order order = new Order(); order.setOrderNumber(new Integer(1)); repository.add(order); EasyMock.verify(repository) } I get Unexpected method call add(br.com.smac.model.domain.Order@ac66b62): add(br.com.smac.model.domain.Order@ac66b62): expected: 1, actual: 0 Why does it not work as expected ??? What should i do to pass the test ???

    Read the article

  • How to pass multiple parameter in DomainService - WCF

    - by S.Amani
    Hi, Let's say I have a window which should submit 3 model in client side (Silverlight Client Application). My problem is each time I submit the form, data on the server side which I passed them from client are empty. I've used nested class which contains my models, instead of passing multiple object as parameter, but it didn't work again. My Personnel Data Transfer Object Code is something like this : [DataContract] public class PersonnelDTO : EntityObject { [Key] [DataMember] public int PersonnelId { get; set; } [Include] [DataMember] [Association("Personnel_ID", "PersonnelId", "Personnel_ID")] public Personnel Personnel { get; set; } [Include] [DataMember] [Association("Personnel_Info_ID", "PersonnelId", "Personnel_Info_ID")] public Personnel_Info PersonnelInfo { get; set; } } I fill up this model to pass data from client to server (DomainService). and also my domain service code is : [Invoke] public void AddPersonnel(PersonnelDTO personnelDTO) { // Model are EMPTY in DTO ObjectContext.AddToPersonnels(personnelDTO.Personnel); ObjectContext.AddToPersonnel_Info(personnelDTO.PersonnelInfo); ObjectContext.SaveChanges(); } I don't know if there is a way to pass multiple parameter in WCF Service method include Generic List. Any advice will be graceful. Thanks.

    Read the article

  • java - useBean in jsp and getAttribute in jsp but NULL

    - by ravi parekh
    user is null in servlet. Pls let me if doing mistake. i m trying to get all html element in bean rateCode.jsp **<%@page import="com.hermes.data.RateCode_" %>** <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title>Rate Code</title> </head> <body> **<jsp:useBean id="user" class="com.hermes.data.RateCode_" scope="session" > <jsp:setProperty name="user" property="*"/></jsp:useBean>** <form id="f_rateCode" action="/ratePromoCodes" method="post" > <table align="center" border="1" cellspacing="0"> <tr> <td colspan="2" align="center" class="header">Rate Code Administrations</td> </tr> <tr> <td align="right" style="border-style: solid;">Rate Code:</td> <td align="left" style="border-style: solid;"> <input type="text" id="code" name="code" value="${user.code}" size="10" maxlength="32" style="width: 100px"/> </td> </tr> <tr> <td align="right" style="border-style: solid;">Rate Description:</td> <td align="left" style="border-style: solid;"> <input type="text" id="description" name="description" value="<%=user.getDescription()%>" maxlength="128" size="40"></td> </tr> <tr><td><input type="submit" value="ok" /></td> </tr> </table> </form> Servlet - ratePromoCodes protected void doPost(HttpServletRequest req, HttpServletResponse resp) { RateCode rc = (RateCode) req.getAttribute("user"); Enumeration an = req.getAttributeNames(); Enumeration pn = req.getParameterNames(); Object o = null; while (an.hasMoreElements()) { o = an.nextElement(); System.out.println(o); } while (pn.hasMoreElements()) { o = pn.nextElement(); System.out.println(o); } } RateCode.java (javaBean) public class RateCode_ { private String code ; private String description; public String getCode() { return code; } public void setCode(String code) { this.code = code; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } }

    Read the article

  • Spring MVC configuration problems

    - by Smek
    i have some problems with configuring Spring MVC. I made a maven multi module project with the following modules: /api /domain /repositories /webapp I like to share the domain and the repositories between the api and the webapp (both web projects). First i want to configure the webapp to use the repositories module so i added the dependencies in the xml file like this: <dependency> <groupId>${project.groupId}</groupId> <artifactId>domain</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <dependency> <groupId>${project.groupId}</groupId> <artifactId>repositories</artifactId> <version>1.0-SNAPSHOT</version> </dependency> And my controller in the webapp module looks like this: package com.mywebapp.webapp; import com.mywebapp.domain.Person; import com.mywebapp.repositories.services.PersonService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; @Controller @RequestMapping("/") @Configuration @ComponentScan("com.mywebapp.repositories") public class PersonController { @Autowired PersonService personservice; @RequestMapping(method = RequestMethod.GET) public String printWelcome(ModelMap model) { Person p = new Person(); p.age = 23; p.firstName = "John"; p.lastName = "Doe"; personservice.createNewPerson(p); model.addAttribute("message", "Hello world!"); return "index"; } } In my webapp module i try to load configuration files in my web.xml like this: <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/META-INF/persistence-context.xml, classpath:/META-INF/service-context.xml</param-value> </context-param> These files cannot be found so i get the following error: org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [META-INF/persistence-context.xml]; nested exception is java.io.FileNotFoundException: class path resource [META-INF/persistence-context.xml] cannot be opened because it does not exist These files are in the repositories module so my first question is how can i make Spring to find these files? I also have trouble Autowiring the PersonService to my Controller class did i forget to configure something in my XML? Here is the error message: [INFO] [talledLocalContainer] SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener [INFO] [talledLocalContainer] org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.mywebapp.repositories.repository.PersonRepository com.mywebapp.repositories.services.PersonServiceImpl.personRepository; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.mywebapp.repositories.repository.PersonRepository] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} PersonServiceImple.java: package com.mywebapp.repositories.services; import com.mywebapp.domain.Person; import com.mywebapp.repositories.repository.PersonRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.mongodb.core.MongoTemplate; import org.springframework.stereotype.Service; @Service public class PersonServiceImpl implements PersonService{ @Autowired public PersonRepository personRepository; @Autowired public MongoTemplate personTemplate; @Override public Person createNewPerson(Person person) { return personRepository.save(person); } } PersonService.java package com.mywebapp.repositories.services; import com.mywebapp.domain.Person; public interface PersonService { Person createNewPerson(Person person); } PersonRepository.java: package com.mywebapp.repositories.repository; import com.mywebapp.domain.Person; import org.springframework.data.mongodb.repository.MongoRepository; import org.springframework.stereotype.Repository; import java.math.BigInteger; @Repository public interface PersonRepository extends MongoRepository<Person, BigInteger> { } persistance-context.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mongo="http://www.springframework.org/schema/data/mongo" xsi:schemaLocation= "http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <context:property-placeholder location="classpath:mongo.properties"/> <mongo:mongo host="${mongo.host}" port="${mongo.port}" id="mongo"> <mongo:options connections-per-host="${mongo.connectionsPerHost}" threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}" connect-timeout="${mongo.connectTimeout}" max-wait-time="${mongo.maxWaitTime}" auto-connect-retry="${mongo.autoConnectRetry}" socket-keep-alive="${mongo.socketKeepAlive}" socket-timeout="${mongo.socketTimeout}" slave-ok="${mongo.slaveOk}" write-number="1" write-timeout="0" write-fsync="true"/> </mongo:mongo> <mongo:db-factory dbname="person" mongo-ref="mongo" id="mongoDbFactory"/> <bean id="personTemplate" name="personTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"> <constructor-arg name="mongoDbFactory" ref="mongoDbFactory"/> </bean> <mongo:repositories base-package="com.mywebapp.repositories.repository" mongo-template-ref="personTemplate"> <mongo:repository id="personRepository" repository-impl-postfix="PersonRepository" mongo-template-ref="personTemplate" create-query-indexes="true"/> </mongo:repositories> Thanks

    Read the article

  • MVC 2 Data annotations problem

    - by Louzzzzzz
    Hi. Going mad now. I have a MVC solution that i've upgraded from MVC 1 to 2. It all works fine.... except the Validation! Here's some code: In the controller: using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Security.Principal; using System.Web; using System.Web.Mvc; using System.Web.Security; using System.Web.UI; using MF.Services.Authentication; using System.ComponentModel; using System.ComponentModel.DataAnnotations; namespace MF.Controllers { //basic viewmodel public class LogOnViewData { [Required] public string UserName { get; set; } [Required] public string Password { get; set; } } [HandleError] public class AccountController : Controller { [HttpPost] public ActionResult LogOn(LogOnViewData lvd, string returnUrl) { if (ModelState.IsValid) { //do stuff - IsValid is always true } } } } The ModelState is always valid. The model is being populated correctly however. Therefore, if I leave both username and password blank, and post the form the model state is still valid. Argh! Extra info: using structure map for IoD. Previously, before upgrading to MVC 2 was using the MS data annotation library so had this in my global.asax.cs: ModelBinders.Binders.DefaultBinder = new Microsoft.Web.Mvc.DataAnnotations.DataAnnotationsModelBinder(); Have removed that now. I'm sure i'm doing something really basic and wrong. If someone could point it out that would be marvellous. Cheers

    Read the article

  • encryption decryption function in php

    - by parthav
    import gnupg, urllib retk = urllib.urlopen("http://keyserver.pramberger.at/pks/" "lookup?op=get&search=userid for the key is required") pub_key = retk.read() #print pub_key gpg = gnupg.GPG(gnupghome="/tmp/foldername", verbose=True) print "Import the Key :", gpg.import_keys(pub_key).summary() print "Encrypt the Message:" msg = "Hellllllllllo" uid = "userid that has the key on public key server" enc = gpg.encrypt(msg, uid,always_trust=True) print "*The enc content***************************== ", enc this function written in python gives me encrypted message.The encryption is done using the public key which i am getting from public key server(pramberger.at). Now how can i implement the same functionality (getting the key from any public key server and using that key encrypt the message) in php

    Read the article

  • Java Applet in Firefox

    - by prakash
    Hi All, I am facing a weird problem in Testing server while using applet (using embed tag) in my ASP.NET MVC application Applet works fine locally in both browsers IE and Firefox but when deployed to Testing server its throwing below exception for Firefox only (IE works fine). Please help me out in this basic: exception: javax.xml.parsers.FactoryConfigurationError: Provider <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> not found. java.lang.RuntimeException: javax.xml.parsers.FactoryConfigurationError: Provider <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> not found at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: javax.xml.parsers.FactoryConfigurationError: Provider <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> not found at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source) at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:772) at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:696) at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:471) at org.apache.log4j.LogManager.<clinit>(LogManager.java:125) at org.apache.log4j.Logger.getLogger(Logger.java:105) at com.goldleaf.scanner.Logger.<init>(Unknown Source) at com.goldleaf.scanner.Logger.<init>(Unknown Source) at com.goldleaf.scanner.Logger$LoggerHolder.<clinit>(Unknown Source) at com.goldleaf.scanner.Logger.getInstance(Unknown Source) at com.goldleaf.scanner.ScannerApplet.<init>(Unknown Source) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source) at java.lang.reflect.Constructor.newInstance(Unknown Source) at java.lang.Class.newInstance0(Unknown Source) at java.lang.Class.newInstance(Unknown Source) at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) Exception: java.lang.RuntimeException: javax.xml.parsers.FactoryConfigurationError: Provider <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> not found Ignored exception: java.lang.RuntimeException: javax.xml.parsers.FactoryConfigurationError: Provider <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> not found basic: Starting applet teardown basic: Finished applet teardown

    Read the article

  • Problem to cretate dynamic radio button in flex.

    - by nemade-vipin
    hi friends, I am creating the flex ARI application in which I am accessing the webservice method this method is returning me a childList.I am accessing it in my flex appliction using the Array object in my action script code.Now I want to cretate one flex page in which I get child list with radio button.I have done it using Arraycollection in which i put all the child name.Now I am getting each child name in mxml using the Repeater component in mxml.But I have problem is that I am getting the only list of child name.I also want to get child id for to set value for each radio button. how can I refer same childname and it's id for radio button using same Arraycollection list.my code is import mx.controls.*; [Bindable] private var childName:ArrayCollection; private var photoFeed:ArrayCollection; private var arrayOfchild:Array; [Bindable] private var childObj:Child; public var user:SBTSWebService; public function initApp():void { user = new SBTSWebService(); user.addSBTSWebServiceFaultEventListener(handleFaults); } public function displayString():void { // Instantiate a new Entry object. var newEntry:GetSBTSMobileAuthentication = new GetSBTSMobileAuthentication(); newEntry.mobile=mobileno.text; newEntry.password=password.text; user.addgetSBTSMobileAuthenticationEventListener(authenticationResult); user.getSBTSMobileAuthentication(newEntry); } public function handleFaults(event:FaultEvent):void { Alert.show("A fault occured contacting the server. Fault message is: " + event.fault.faultString); } public function authenticationResult(event:GetSBTSMobileAuthenticationResultEvent):void { if(event.result != null) { if(event.result._return > 0) { var UserId:int = event.result._return; getChildList(UserId); viewstack2.selectedIndex=1; } else { Alert.show("Authentication fail"); } } } public function getChildList(userId:int):void { var childEntry:GetSBTSMobileChildrenInfo = new GetSBTSMobileChildrenInfo(); childEntry.UserId = userId; user.addgetSBTSMobileChildrenInfoEventListener(sbtsChildrenInfoResult); user.getSBTSMobileChildrenInfo(childEntry); } public function sbtsChildrenInfoResult(event:GetSBTSMobileChildrenInfoResultEvent):void { if(event.result != null && event.result._return!=null) { arrayOfchild = event.result._return as Array; photoFeed = new ArrayCollection(arrayOfchild); childName = new ArrayCollection(); for( var count:int=0;count<photoFeed.length;count++) { childObj = photoFeed.getItemAt(count,0) as Child; childName.addItem(childObj.strName); } } } ]]> <mx:Panel width="500" height="300" headerColors="[#000000,#FFFFFF]"> <mx:TabNavigator id="viewstack2" selectedIndex="0" creationPolicy="all" width="100%" height="100%"> <mx:Form label="Login Form"> <mx:FormItem label="Mobile NO:"> <mx:TextInput id="mobileno" /> </mx:FormItem> <mx:FormItem label="Password:"> <mx:TextInput displayAsPassword="true" id="password" /> </mx:FormItem> <mx:FormItem> <mx:Button label="Login" click="displayString()"/> </mx:FormItem> </mx:Form> <mx:Form label="Child List"> <mx:Label width="100%" color="blue" text="Select Child."/> <mx:RadioButtonGroup id="radioGroup" /> <mx:Repeater id="fieldRepeater" dataProvider="{childName}"> <mx:RadioButton groupName="radioGroup" label="{fieldRepeater.currentItem}"/> </mx:Repeater> </mx:Form> <mx:Form label="Child Information"> </mx:Form> <mx:Form label="Trace Path"> </mx:Form> </mx:TabNavigator> </mx:Panel> please tell me the sol.

    Read the article

  • Java JFrame EventQueue

    - by asmo
    In Java, to create and show a new JFrame, I simply do this: public static void main(String[] args) { new JFrame().setVisible(true); } However, I saw many people doing it like this: public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { new JFrame().setVisible(true); } }); } Why? Are there any advantages?

    Read the article

  • Click event to a Gwt-connector

    - by sprasad12
    Hi, I am trying to add click event to one of the widgets that use gwt-connector. Here is the code: public class Diagrams extends Diagram implements HasClickHandlers{ public Diagrams(AbsolutePanel boundaryPanel) { super(boundaryPanel); } @Override public HandlerRegistration addClickHandler(ClickHandler handler) { return addDomHandler(handler, ClickEvent.getType()); } @Override public void fireEvent(GwtEvent<?> event) { } } Here Diagram is a gwt-connector class. Here is the link to the Diagram class and also link to GWT-Connector. Question: Am i doing anything wrong in the code while adding the clickhandler? I am getting error saying that addDomHandler is undefined for the type Diagrams. are there limitations for adding click handlers? Any input will be of great help. Thank you.

    Read the article

  • Java: volatile guarantees and out-of-order execution

    - by WizardOfOdds
    Note that this question is solely about the volatile keyword and the volatile guarantees: it is not about the synchronized keyword (so please don't answer "you must use synchronize" for I don't have any issue to solve: I simply want to understand the volatile guarantees (or lack of guarantees) regarding out-of-order execution). Say we have an object containing two volatile String references that are initialized to null by the constructor and that we have only one way to modify the two String: by calling setBoth(...) and that we can only set their references afterwards to non-null reference (only the constructor is allowed to set them to null). For example (it's just an example, there's no question yet): public class SO { private volatile String a; private volatile String b; public SO() { a = null; b = null; } public void setBoth( @NotNull final String one, @NotNull final String two ) { a = one; b = two; } public String getA() { return a; } public String getB() { return b; } } In setBoth(...), the line assigning the non-null parameter "a" appears before the line assigning the non-null parameter "b". Then if I do this (once again, there's no question, the question is coming next): if ( so.getB() != null ) { System.out.println( so.getA().length ); } Am I correct in my understanding that due to out-of-order execution I can get a NullPointerException? In other words: there's no guarantee that because I read a non-null "b" I'll read a non-null "a"? Because due to out-of-order (multi)processor and the way volatile works "b" could be assigned before "a"? volatile guarantees that reads subsequent to a write shall always see the last written value, but here there's an out-of-order "issue" right? (once again, the "issue" is made on purpose to try to understand the semantics of the volatile keyword and the Java Memory Model, not to solve a problem).

    Read the article

  • Submenu within menu within menu ?

    - by abhishek mishra
    On pressing menu button , I have 2 options : Add & more. On click of more i have 3 options : Organize ,Export & Exit On click of Organize i want other 5 options. On click of more i get my submenu. But i want other 5 options on click of organize.How do i proceed??? My code in parts is as follows : XML file------------------------------- <item android:id="@+id/more" android:title="@string/moreMenu" android:icon="@drawable/icon"> <menu> <item android:id="@+id/Organize" android:title="@string/Organize" /> <item android:id="@+id/Export" android:title="@string/Export" /> </menu> </item> android:id="@+id/add" android:title="@string/addMenu" android:icon="@drawable/add"/ Java------------------------- package com.tcs.QuickNotes; import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.Toast; public class ToDoList extends Activity { Menu menu; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.todolist); } public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); getMenuInflater().inflate(R.layout.categorymenu, menu); return true; } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.more: Toast.makeText(this, "You pressed more!", Toast.LENGTH_LONG).show(); //(What needs to be done from here) return true; case R.id.add: Toast.makeText(this, "You pressed add!", Toast.LENGTH_LONG).show(); return true; } return false; } public boolean onPrepareOptionsMenu(Menu menu) { return true; } }

    Read the article

  • EJB3 Entity and Lazy Problem

    - by Stefano
    My Entity beAN have 2 list: @Entity @Table(name = "TABLE_INTERNAL") public class Internal implements java.io.Serializable { ...SOME GETTERS AND SETTERS... private List<Match> matchs; private List<Regional> regionals; } mapped one FetchType.LAZY and one FetchType.EAGER : @OneToMany(fetch = FetchType.LAZY,mappedBy = "internal") public List<Match> getMatchs() { return matchs; } public void setMatchs(List<Match> matchs) { this.matchs = matchs; } @ManyToMany(targetEntity = Regional.class, mappedBy = "internals", fetch =FetchType.EAGER) public List<Regional> getRegionals() { return regionals; } public void setRegionals(List<Regional> regionals) { this.regionals = regionals; } I need both lists full ! But I cant put two FetchType.EAGER beacuse it's an error. I try some test: List<Internal> out; out= em.createQuery("from Internal").getResultList(); out= em.createQuery("from Internal i JOIN FETCH i.regionals ").getResultList(); I'm not able to fill both lists...Help!!! Stefano

    Read the article

  • BlazeDS StreamingAMF: How to detect when flex client closes the connection?

    - by Adrian Pirvulescu
    Hello, I have a Flex application that connects to a BlazeDS server using the StreamingAMF channel. On the server-side the logic is handled by a custom adapter that extends ActionScriptAdapter and implements FlexSessionListener and FlexClientListener interfaces. I am asking how can I detect which "flex-client" has closed a connection when for example the user is closing the browser? (so I can clean some infos inside the database) I tried using the following: 1. To manually manage the command messages: @Override public Object manage(final CommandMessage commandMessage) { switch (commandMessage.getOperation()) { case CommandMessage.SUBSCRIBE_OPERATION: System.out.println("SUBSCRIBE_OPERATION = " + commandMessage.getHeaders()); break; case CommandMessage.UNSUBSCRIBE_OPERATION: System.out.println("UNSUBSCRIBE_OPERATION = " + commandMessage.getHeaders()); break; } return super.manage(commandMessage); } But the clientID's are always different from the ones that came. 2. Listening for sessionDestroyed and clientDestroyed events @Override public void clientCreated(final FlexClient client) { client.addClientDestroyedListener(this); System.out.println("clientCreated = " + client.getId()); } @Override public void clientDestroyed(final FlexClient client) { System.out.println("clientDestroyed = " + client.getId()); } @Override public void sessionCreated(final FlexSession session) { System.out.println("sessionCreated = " + session.getId()); session.addSessionDestroyedListener(this); } @Override public void sessionDestroyed(final FlexSession session) { System.out.println("sessionDestroyed = " + session.getId()); } But those sessionDestroyed and clientDestroyed methods are never called. :(

    Read the article

  • C# Begin/EndReceive - how do I read large data?

    - by ryeguy
    When reading data in chunks of say, 1024, how do I continue to read from a socket that receives a message bigger than 1024 bytes until there is no data left? Should I just use BeginReceive to read a packet's length prefix only, and then once that is retrieved, use Receive() (in the async thread) to read the rest of the packet? Or is there another way? edit: I thought Jon Skeet's link had the solution, but there is a bit of a speedbump with that code. The code I used is: public class StateObject { public Socket workSocket = null; public const int BUFFER_SIZE = 1024; public byte[] buffer = new byte[BUFFER_SIZE]; public StringBuilder sb = new StringBuilder(); } public static void Read_Callback(IAsyncResult ar) { StateObject so = (StateObject) ar.AsyncState; Socket s = so.workSocket; int read = s.EndReceive(ar); if (read > 0) { so.sb.Append(Encoding.ASCII.GetString(so.buffer, 0, read)); if (read == StateObject.BUFFER_SIZE) { s.BeginReceive(so.buffer, 0, StateObject.BUFFER_SIZE, 0, new AyncCallback(Async_Send_Receive.Read_Callback), so); return; } } if (so.sb.Length > 0) { //All of the data has been read, so displays it to the console string strContent; strContent = so.sb.ToString(); Console.WriteLine(String.Format("Read {0} byte from socket" + "data = {1} ", strContent.Length, strContent)); } s.Close(); } Now this corrected works fine most of the time, but it fails when the packet's size is a multiple of the buffer. The reason for this is if the buffer gets filled on a read it is assumed there is more data; but the same problem happens as before. A 2 byte buffer, for exmaple, gets filled twice on a 4 byte packet, and assumes there is more data. It then blocks because there is nothing left to read. The problem is that the receive function doesn't know when the end of the packet is. This got me thinking to two possible solutions: I could either have an end-of-packet delimiter or I could read the packet header to find the length and then receive exactly that amount (as I originally suggested). There's problems with each of these, though. I don't like the idea of using a delimiter, as a user could somehow work that into a packet in an input string from the app and screw it up. It also just seems kinda sloppy to me. The length header sounds ok, but I'm planning on using protocol buffers - I don't know the format of the data. Is there a length header? How many bytes is it? Would this be something I implement myself? Etc.. What should I do?

    Read the article

  • How can i call method from class but this method implamented from any interface?

    - by Phsika
    i try to call base.Alan(); in HacimBul. But base. dont give intellisense alan method public double HacimBul() { throw new Exception(); //return base..... -- how can i see base.Alan(); } namespace interfaceClass { class Program { static void Main(string[] args) { } } interface Ikenar { double kenar { get; set; } } interface Iyukseklik { double yuksekli {get; set;} } interface IAlan { double Alan(); } interface IHacim { double Hacim(); } class Alan : Ikenar, IAlan { public double kenar { get; set; } double IAlan.Alan() { return kenar * kenar; } } class Hacim : Alan, Iyukseklik { public double kenar { get; set; } public double yuksekli { get; set; } public double HacimBul() { throw new Exception(); //return base..... -- how can i see base.Alan(); } } }

    Read the article

  • PHP: Array of objects is empty when I come to retrieve one from the array

    - by Tom
    Good morning, I am trying to load rows from a database and then create objects from them and add these objects to a private array. Here are my classes: <?php include("databaseconnect.php"); class stationItem { private $code = ''; private $description = ''; public function setCode($code ){ $this->code = $code; } public function getCode(){ return $this->code; } public function setDescription($description){ $this->description = $description; } public function getDescription(){ return $this->description; } } class stationList { private $stationListing; function __construct() { connect(); $stationListing = array(); $result = mysql_query('SELECT * FROM stations'); while ($row = mysql_fetch_assoc($result)) { $station = new stationItem(); $station->setCode($row['code']); $station->setDescription($row['description']); array_push($stationListing, $station); } mysql_free_result($result); } public function getStation($index){ return $stationListing[$index]; } } ?> As you can see I am creating a stationItem object per database row (which for now has a code and description) and I then push these on to the end of my array which is held as a private variable in stationList. This is code which creates this classes and attempts to access the properties on them: $stations = new stationList(); $station = $stations->getStation(0); echo $station->getCode(); I am finding that the sizeof($stationList) at the end of the constructor is 1 but then it is zero when we come to try to get an object from the array using the index. Therefore the error that I get is: Fatal error: Call to a member function getCode() on a non-object Please can someone explain to me why this is happening? I guess I am misunderstanding how object references work in PHP5.

    Read the article

  • Java MVC - How to divide a done text game into MVC?

    - by Zopyrus
    Been sitting here for hours now trying to figure this out, so a bit sympathy for this large question. :) The Goal: I simply want to divide my done code into MVC (Model View Controller) parts. I have the game logics done and text based - the code works fine. The Problem: Well, I want to implement this code into MVC, but where do explain for the MODEL that it should use text-based? Because the VIEW is only for the layout (graphically) correct? I am having a REALLY hard time figuring out where to begin at all. Any pointers would be so nice! Here is my game logics code: import mind.*; import javax.swing.*; import java.util.*; import java.lang.*; import java.awt.*; public class Drive { String[] mellan; boolean gameEnd, checkempty, checkempty2, enemy, enemy2; String gr,rd,tom; int digits; public Drive() { // Gamepieces in textform gr="G"; rd="R"; tom=" "; mellan = new String[7]; String[] begin = {gr,gr,gr,tom,rd,rd,rd}; String[] end = {rd,rd,rd,tom,gr,gr,gr}; //input Scanner in = new Scanner(System.in); mellan=begin; gameEnd=false; while (gameEnd == false) { for(int i=0; i<mellan.length; i++) { System.out.print(mellan[i]); } System.out.print(" Choose 0-6: "); digits = in.nextInt(); move(); checkWin(); } } void move() { //BOOLEAN for gameruls!!! checkempty = digits<6 && mellan[digits+1]==tom; checkempty2 = digits>0 && mellan[digits-1]==tom; enemy = (mellan[digits]==gr && mellan[digits+1]==rd && mellan[digits+2]==tom); enemy2 = (mellan[digits]==rd && mellan[digits-1]==gr && mellan[digits-2]==tom); if(checkempty) { mellan[digits+1]=mellan[digits]; mellan[digits]=tom; } else if (checkempty2) { mellan[digits-1]=mellan[digits]; mellan[digits]=tom; } else if (enemy) { mellan[digits+2]=mellan[digits]; mellan[digits]=tom; } else if (enemy2) { mellan[digits-2]=mellan[digits]; mellan[digits]=tom; } } void checkWin() { String[] end = {rd,rd,rd,tom,gr,gr,gr}; for (int i=0; i<mellan.length; i++){ } if (Arrays.equals(mellan,end)) { for (int j=0; j<mellan.length; j++) { System.out.print(mellan[j]); } displayWin(); } } void displayWin() { gameEnd = true; System.out.println("\nNicely Done!"); return; } // Kör Drive! public static void main(String args[]) { new Drive(); } } Here is how I defined my DriveView thus far: (just trying to make one button to work) import mind.*; import javax.swing.*; import java.util.*; import java.lang.*; import java.awt.*; import java.awt.event.*; public class DriveView extends JFrame { JButton ruta1 = new JButton("Green"); JButton ruta2 = new JButton("Green"); JButton rutatom = new JButton(""); JButton ruta6 = new JButton("Red"); private DriveModel m_model; public DriveView(DriveModel model) { m_model = model; //Layout for View JPanel myPanel = new JPanel(); myPanel.setLayout(new FlowLayout()); myPanel.add(ruta1); myPanel.add(ruta2); myPanel.add(rutatom); myPanel.add(ruta6); this.setContentPane(myPanel); this.pack(); this.setTitle("Drive"); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } void addMouseListener(ActionListener mol) { ruta2.addActionListener(mol); } } And DriveController which gives me error at compile import mind.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.lang.*; public class DriveController { private DriveModel m_model; private DriveView m_view; public DriveController(DriveModel model, DriveView view) { m_model = model; m_view = view; view.addMouseListener(new MouseListener()); } class MouseListener implements ActionListener { public void actionPerformed(ActionEvent e) { String mening; mening = e.getActionCommand(); if (mening.equals("Green")) { setForeground(Color.red); } } } }

    Read the article

  • @webservice inheritance java

    - by javamonkey79
    I am trying to build a java ee webservice that has a common base class, but the child classes are the actual @webservice classes (and expose the parent class methods as @webmethod's) Like this: public abstract class Parent { @WebMethod public void doSomething(){//...does stuff} } @WebService public class Child extends Parent {} I've tried (and have failed): - annotating the parent class as a webservice as well - making sure all parent methods are annotated with @WebMethod Is this possible, if so, how?

    Read the article

  • Turn off iPhone/Safari input element rounding

    - by Alex
    My website renders well on the iPhone/Safari browser, with one exception: My text input fields have a weird rounded style which doesn't look good at all with the rest of my website. Is there a way to instruct Safari (via CSS or metadata) not to round the input fields and render them rectangular as intended?

    Read the article

< Previous Page | 273 274 275 276 277 278 279 280 281 282 283 284  | Next Page >