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| Using the local history |
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| <h1> |
| Using the local history |
| </h1> |
| <p> |
| In this section, you will use the local history feature to switch to a previously saved version of an individual |
| Java element. |
| </p> |
| <ol> |
| <li> |
| Open <em>junit.samples.VectorTest.java</em> file in the Java editor and select the method |
| <em>testCapacity()</em> in the Outline view. |
| </li> |
| <li> |
| Change the content of the method so that the 'for' statements reads as:<br> |
| <p><code> |
| for (int i= 0; i < 99; i++) |
| </code></p> |
| Save the file by pressing <kbd>Ctrl+S</kbd>. |
| </li> |
| <li> |
| In the Outline view, select the method <code>testCapacity()</code>, and from its context menu, select <strong>Replace |
| With > Element from Local History</strong>. |
| </li> |
| <li> |
| In the <strong>Replace Java Element from Local History</strong> dialog, the Local History list |
| shows the various saved states of the method. The Java Source Compare pane shows details of the |
| differences between the selected history resource and the existing workbench resource. |
| <p> |
| <img src="images/replace_local_element.png" alt="Replace from local history"> |
| </p> |
| </li> |
| <li> |
| In the top pane, select the previous version, and click the <strong> Replace |
| button</strong>. In the Java editor, the method is replaced with the selected history version. |
| </li> |
| <li> |
| Save the file. |
| </li> |
| <li> |
| Beside replacing a method's version with a previous one you can also restore Java elements that were |
| deleted. Again, select the method <em>testCapacity()</em> in the Outline view, and from its context |
| menu, select <strong>Delete</strong>. Confirm the resulting dialog with <strong>Yes</strong> and |
| save the file. |
| </li> |
| <li> |
| Now select the type <em>VectorTest</em> in the Outline view, and from its context menu, select |
| <strong>Restore from Local History...</strong>. Select and check the method <em>testCapacity()</em> |
| in the Available Java Elements pane. As before, the Local History pane shows the versions saved |
| in the local history. |
| <p> |
| <img src="images/restore_local_history.png" alt="Restore from local history"> |
| </p> |
| </li> |
| <li> |
| In the Local History pane, select the earlier working version and then click <strong>Restore</strong>. |
| </li> |
| </ol> |
| <P class="nav_footer" id="nav_footer">Next Section: <A href="qs-ExtractMethod.htm">Extracting a new method</A> |
| </P> |
| <p> |
| <img border="0" src="../images/ngrelc.png" alt="Related concepts" > |
| </p> |
| <p> |
| <a href="../concepts/concepts-7.htm">Java editor</a><br> |
| </p> |
| <p> |
| <img src="../images/ngrelt.png" alt="Related tasks" border="0" > |
| </p> |
| <p> |
| <a href="../tasks/tasks-62.htm">Using the local history</a><br> |
| </p> |
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