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| <H1><CENTER>Launch Configuration Comparators</CENTER></H1> |
| <b><i>Identifier: </i></b>org.eclipse.debug.core.launchConfigurationComparators<p> |
| <b><i>Description: </i></b>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 <samp>java.lang.Object.equals(Object)</samp>. |
| 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.<p><b><i>Configuration Markup:</i></b><p> |
| <p><samp><font color="#800000"> <!ELEMENT <a name="e.extension">extension</a> (<a href="#e.launchConfigurationComparator">launchConfigurationComparator</a>*)></font></samp> |
| <br><br><samp><font color="#800000"> <!ATTLIST extension</samp> |
| <br><samp> point CDATA #REQUIRED</samp> |
| <br><samp> id CDATA #IMPLIED</samp> |
| <br><samp> name CDATA #IMPLIED</samp> |
| <br><samp> ></font></samp> |
| <ul> |
| <li><b>point</b> - a fully qualified identifier of the target extension point</li> |
| <li><b>id</b> - an optional identifier of the extension instance</li> |
| <li><b>name</b> - an optional name of the extension instance</li> |
| </ul> |
| <p><samp><font color="#800000"> <!ELEMENT <a name="e.launchConfigurationComparator">launchConfigurationComparator</a> EMPTY></font></samp> |
| <br><br><samp><font color="#800000"> <!ATTLIST launchConfigurationComparator</samp> |
| <br><samp> id CDATA #REQUIRED</samp> |
| <br><samp> attribute CDATA #REQUIRED</samp> |
| <br><samp> class CDATA #REQUIRED</samp> |
| <br><samp> ></font></samp> |
| <ul> |
| <li><b>id</b> - specifies a unique identifier for this extension.</li> |
| <li><b>attribute</b> - specifies the launch configuration attribute name that this comparator compares.</li> |
| <li><b>class</b> - specifies a fully-qualified name of a class that implements <samp>java.util.Comparator</samp>.</li> |
| </ul> |
| <b><i>Examples: </i></b>The following is an example of a launch configuration comparator extension point: |
| |
| <p> |
| <pre> |
| <font color="#000080"><extension point=<font color="#008000">"org.eclipse.debug.core.launchConfigurationComparators"</font>></font> |
| <font color="#000080"><launchConfigurationComparator |
| id=<font color="#008000">"com.example.ExampleIdentifier"</font> |
| attribute=<font color="#008000">"com.example.ExampleAttributeName"</font> |
| class=<font color="#008000">"com.example.ComparatorImplementation"</font>></font> |
| <font color="#000080"></launchConfigurationComparator></font> |
| <font color="#000080"></extension></font> |
| </pre> |
| </p> |
| |
| In the example above, the specified type of launch configuration comparator will be consulted when comparing the equality of attributes keyed with name <samp>com.example.ExampleAttributeName</samp>.<p> |
| <b><i>API Information: </i></b>Value of the attribute <b>class</b> must be a fully-qualified name of a Java class that implements the interface <b>java.util.Comparator</b>.<p> |
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