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• org.eclipse.core.expressions: Javadoc index of package org.eclipse.core.expressions.


Package Samples:

• org.eclipse.core.expressions

Classes:

• EvaluationResult: An evaluation result represents the result of an expression evaluation. There are exact three instances of evaluation result. They are: FALSE , TRUE and NOT_LOADED . NOT_LOADED represents the fact that an expression couldn't be evaluated since a plug-in providing certain test expressions isn't loaded yet. In addition the class implements the three operation and , or and not . The operation are defined as follows: The and operation: AND FALSE TRUE NOT_LOADED FALSE FALSE FALSE FALSE TRUE FALSE TRUE NOT_LOADED NOT_LOADED FALSE NOT_LOADED NOT_LOADED The or operation: OR FALSE TRUE NOT_LOADED FALSE ...
• PropertyTester: 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 ...
• ExpressionConverter: An expression converter converts an XML expression represented by an org.eclipse.core.runtime.IConfigurationElement tree into a corresponding expression tree. An expression converter manages a list of ElementHandler s. Element handlers are responsible to do the actual conversion. The element handlers build a chain of responsibility.
• IEvaluationContext: An evaluation context is used to manage a set of objects needed during XML expression evaluation. A context has a parent context, can manage a set of named variables and has a default variable. The default variable is used during XML expression evaluation if no explicit variable is referenced. This interface is not intended to be implemented by clients. Clients are allowed to instantiate EvaluationContext .
• Expression: Abstract base class for all expressions provided by the common expression language. An expression is evaluated by calling evaluate(IEvaluationContext) 55 . This class may be subclassed to provide specific expressions.
• ElementHandler: An element handler converts an org.eclipse.core.runtime.IConfigurationElement into a corresponding expression object. The class should be subclassed by clients wishing to provide an element handler for special expressions.
• IVariableResolver: A variable resolver can be used to add additional variable resolving strategies to an EvaluationContext .
• IPropertyTester: A property tester can be used to add additional properties to test to an existing type. This interface is not intended to be implemented by clients. Clients should subclass type PropertyTester .
• EvaluationContext: A default implementation of an evaluation context. Clients may instantiate this default context. The class is not intended to be subclassed by clients.
• ExpressionTagNames: Class defining the tag names of the XML elements of the common expression language.

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