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| <TITLE>Merging multiple files</TITLE> |
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| <H2> |
| Merging multiple files</H2> |
| <p> |
| In some cases, the ability to merge files without the assist of a user |
| is desirable. The extension point |
| <a href="../reference/extension-points/org_eclipse_team_core_storageMergers.html"><b>org.eclipse.team.core.storageMergers</b></a> |
| allows you to contribute a class that merges three different files (or storage units) into a single output stream. Storage mergers |
| can be associated with file extensions or bound to a particular content type. The Platform defines a storage |
| merger for merging three files of plain text:</p> |
| <pre><extension |
| point="org.eclipse.team.core.storageMergers"> |
| <storageMerger |
| extensions="txt" |
| class="org.eclipse.team.internal.ui.mapping.TextStorageMerger" |
| id="org.eclipse.team.ui.textStorageMerger"> |
| </storageMerger> |
| <contentTypeBinding |
| contentTypeId="org.eclipse.core.runtime.text" |
| streamMergerId="org.eclipse.team.ui.textStorageMerger"> |
| </contentTypeBinding> |
| </extension> |
| </pre> |
| <p>The storage merger itself is described in the <b>storageMerger</b> element. You must specify the <b>id </b>of the |
| merger and the <b>class</b> that implements it. You may also specify any file <b>extensions</b> for which the |
| the storage merger should be used.</p> |
| <p>You may also use the <b>contentTypeBinding</b> element to associate a <a href="runtime_content.htm">content type</a> |
| with a storage merger. |
| </p> |
| <p> |
| Storage mergers must implement |
| <a href="../reference/api/org/eclipse/team/core/mapping/IStorageMerger.html"><b>IStorageMerger</b></a>. |
| This simple interface merges the contents from three different storage units into a single output stream. |
| The not-so-simple implementation depends upon your plug-in and its content types. |
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