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| <TITLE>Compare support</TITLE> |
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| <H1> |
| Compare support</H1> |
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| <p> |
| If your plug-in defines and manipulates its own resource types, you may have |
| special requirements for comparing resources. Resources are often compared |
| when working with local history or with files from a repository. The <b>compare</b> |
| plug-in supports merging of multiple content streams and the implementation of advanced compare views. |
| Services provided by this plug-in include:</p> |
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| <ul> |
| <li>Interfaces for merging multiple text streams into a single output stream</li> |
| <li>Two and three-way compare and merge components for hierarchical structures |
| inferred from text</li> |
| <li>Differencing engines for hierarchical structures and character ranges in |
| text</li> |
| </ul> |
| <p>These services are used in the platform to assist with user tasks such as |
| integrating patch files and comparing/merging the workspace with local history.</p> |
| <h2>Compare viewers</h2> |
| <p> |
| All compare viewers are standard <a href="jface_viewers.htm"> JFace viewers</a> that expect an input object implementing the |
| <b><a href="../reference/api/org/eclipse/compare/structuremergeviewer/ICompareInput.html">ICompareInput</a></b> |
| interface.</p> |
| <p> |
| Compare viewers are said to be |
| <a href="compare_contentviewer.htm">content-oriented</a> if they compare flat |
| inputs such as text or images and |
| <a href="compare_structureviewer.htm">structure-oriented</a> if they compare |
| hierarchically structured input elements.</p> |
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