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org.eclipse.core.expressions
Class PropertyTester  

java.lang.Object
  org.eclipse.core.expressions.PropertyTester

All Implemented Interfaces:

IPropertyTester

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public abstract class PropertyTester

extends java.lang.Object

implements IPropertyTester

Abstract superclass of all property testers. Implementation classes of the extension point org.eclipse.core.expresssions.propertyTesters must extend PropertyTester.

A property tester implements the property tests enumerated in the property tester extension point. For the following property test extension

   <propertyTester
     	 namespace="org.eclipse.jdt.core"
       id="org.eclipse.jdt.core.IPackageFragmentTester"
       properties="isDefaultPackage"
       type="org.eclipse.jdt.core.IPackageFragment"
       class="org.eclipse.demo.MyPackageFragmentTester">
     </propertyTester>
 

the corresponding implemenation class looks like:

   public class MyPackageFragmentTester {
       public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
           IPackageFragment fragement= (IPackageFragment)receiver;
	         if ("isDefaultPackage".equals(method)) { 
               return fragement.isDefaultPackage();
           }
           Assert.isTrue(false);
           return false;
       }
   }
 

The property can then be used in a test expression as follows:

   <instanceof value="org.eclipse.core.IPackageFragment"/>
   <test property="org.eclipse.jdt.core.isDefaultPackage"/>
 

Since:

3.0

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Field Summary
private  org.eclipse.core.runtime.IConfigurationElement	fConfigElement
private  java.lang.String	fNamespace
private  java.lang.String	fProperties

 

Constructor Summary

PropertyTester()

 

Method Summary
boolean	handles(java.lang.String namespace, java.lang.String property)           null
IPropertyTester	instantiate()           null
org.eclipse.core.internal.expressions.PropertyTesterDescriptor	internalCreateDescriptor()           Note: this method is for internal use only.
void	internalInitialize(org.eclipse.core.internal.expressions.PropertyTesterDescriptor descriptor)           Initialize the property tester with the given name space and property.
boolean	isDeclaringPluginActive()           null
boolean	isInstantiated()           null

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Methods inherited from interface org.eclipse.core.expressions.IPropertyTester

test

 

Field Detail

fConfigElement

private org.eclipse.core.runtime.IConfigurationElement fConfigElement

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fNamespace

private java.lang.String fNamespace

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fProperties

private java.lang.String fProperties

Constructor Detail

PropertyTester

public PropertyTester()

Method Detail

internalInitialize

public final void internalInitialize(org.eclipse.core.internal.expressions.PropertyTesterDescriptor descriptor)

Initialize the property tester with the given name space and property.

Note: this method is for internal use only. Clients must not call this method.

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internalCreateDescriptor

public final org.eclipse.core.internal.expressions.PropertyTesterDescriptor internalCreateDescriptor()

Note: this method is for internal use only. Clients must not call this method.

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handles

public final boolean handles(java.lang.String namespace,
                             java.lang.String property)

null

Specified by:

handles in interface IPropertyTester

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isInstantiated

public final boolean isInstantiated()

null

Specified by:

isInstantiated in interface IPropertyTester

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isDeclaringPluginActive

public boolean isDeclaringPluginActive()

null

Specified by:

isDeclaringPluginActive in interface IPropertyTester

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instantiate

public final IPropertyTester instantiate()

null

Specified by:

instantiate in interface IPropertyTester

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