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JDT Plug-in Developer Guide Reference Extension Points Reference

Java Logical Structures

Identifier:

org.eclipse.jdt.debug.javaLogicalStructures

Since:

3.1

Description:

This extension point allows developers to define a logical structure for Java objects of a specified type. The logical value is created by evaluating the provided code snippet.

Configuration Markup:

<!ELEMENT extension ( javaLogicalStructure+)>

<!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 javaLogicalStructure ( variable+)?>

<!ATTLIST javaLogicalStructure

type CDATA #REQUIRED

subtypes (true | false) "true"

value CDATA #IMPLIED

description CDATA #REQUIRED

type - Fully qualified name of the type.
subtypes - specify if this Java logical structure should be used also for the objects of a subtype of the specified type, or only for the objects of the specified type. This attribute is optional, the default value is true.
value - The code snippet to evaluate to create the logical value. This attribute is optional, if unspecified, the extension must declare one or more variables.
description - a description of this logical structure.

<!ELEMENT variable EMPTY>

<!ATTLIST variable

name CDATA #REQUIRED

value CDATA #REQUIRED

One variable of the logical value for the object of this type.

name - The name of the variable which will be created
value - The code snippet which will be evaluated as the value of the variable

Examples:

Following is an example of a Java logical structure extension point with two structures:


<extension point=
"org.eclipse.jdt.debug.javaLogicalStructures"
>
  <javaLogitalStructure
      subtypes=
"true"

      value=
"return entrySet().toArray();"

      type=
"java.util.Map"
/>
  <javaLogitalStructure
      subtypes=
"true"

      type=
"java.util.Map$Entry"
>
    <variable
      value=
"return getKey();"

      name=
"key"
/>
    <variable
      value=
"return getValue();"

      name=
"value"
/>
  </javaLogitalStructure>
</extension>

In the example above a Map is translated into its entries and a Map$Entry is translated into its key and value.

Supplied Implementation:

[Enter information about supplied implementation of this extension point.]

Copyright (c) 2004, 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