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Eclipse Plug-in Developer Guide
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Launch Configuration Comparators

Identifier:
org.eclipse.debug.core.launchConfigurationComparators

Description:
This extension point provides a configurable mechanism for comparing specific attributes of a launch configuration. In general, launch configuration attributes can be compared for equality via the default implementation of java.lang.Object.equals(Object). However, attributes that require special handling should implement this extension point. For example, when an attribute is stored as XML, it is possible that two strings representing an equivalent attribute have different whitespace formatting.

Configuration Markup:

<!ELEMENT extension ( launchConfigurationComparator*)>

<!ATTLIST extension

point CDATA #REQUIRED

id    CDATA #IMPLIED

name  CDATA #IMPLIED

>

  • point - a fully qualified identifier of the target extension point
  • id - an optional identifier of the extension instance
  • name - an optional name of the extension instance

<!ELEMENT launchConfigurationComparator EMPTY>

<!ATTLIST launchConfigurationComparator

id        CDATA #REQUIRED

attribute CDATA #REQUIRED

class     CDATA #REQUIRED

>

  • id - specifies a unique identifier for this extension.
  • attribute - specifies the launch configuration attribute name that this comparator compares.
  • class - specifies a fully-qualified name of a class that implements java.util.Comparator.

Examples:
The following is an example of a launch configuration comparator extension point:


 <extension point=
"org.eclipse.debug.core.launchConfigurationComparators"
>
  <launchConfigurationComparator
   id=
"com.example.ExampleIdentifier"

   attribute=
"com.example.ExampleAttributeName"

   class=
"com.example.ComparatorImplementation"
>
  </launchConfigurationComparator>
 </extension>

In the example above, the specified type of launch configuration comparator will be consulted when comparing the equality of attributes keyed with name com.example.ExampleAttributeName.


Copyright (c) 2000, 2005 IBM Corporation and others.
All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at https://www.eclipse.org/legal/epl-v10.html


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire