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| <title>Path variables</title> |
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| <H1 CLASS="Head">Path variables</H1> |
| <p> |
| Path variables specify locations on the file system. The location of linked resources |
| may be specified relative to these path variables. They allow you to avoid references to |
| a fixed location on your file system. |
| </p> |
| <p> |
| By using a path variable, you can share projects containing linked resources with |
| team members without requiring the exact same directory structure as on your file |
| system. |
| </p> |
| <p> |
| Path variables can be either defined at the project level or at the workspace level. Creating |
| path variables at the project level ensures that projects that contain linked resources using |
| those path variables remain portable across workspace and computers. |
| </p> |
| <p> |
| Each project contain a pre-defined set of path variables available for defining linked resources, |
| including <b>ECLIPSE_HOME</b>, <b>PARENT_LOC</b>, <b>PROJECT_LOC</b> and <b>WORKSPACE_LOC</b>. |
| </p> |
| <p> |
| New path variables can be defined relative to existing path variables by using the ${VAR} syntax. |
| For example, a path variable FOO can be defined relative to BAR by defining it to "${BAR}../foo". |
| </p> |
| <p> |
| You can load a project that uses path variables even if you do not currently have all |
| the path variables defined in the project or workspace. A linked resource that uses a missing path |
| variable is flagged using a special decorator icon. In addition, the |
| <b>File > Properties > Resource</b> |
| property page and the Properties view |
| (<a class="command-link" href='javascript:executeCommand("org.eclipse.ui.views.showView(org.eclipse.ui.views.showView.viewId=org.eclipse.ui.views.PropertySheet)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.svg" alt="command link"> |
| <b>Window > Show View > Other... > General > Properties</b></a>) |
| for a linked resource indicate the |
| variable and whether it is defined or not. A path variable can also specify a |
| location that does not currently exist on the file system. Linked resources that use such |
| a path variable are indicated using the same decorator icon mentioned above. |
| </p> |
| <p> |
| You can create new path variables and edit and remove existing path variables in |
| the <b>File > Properties > Resource > Linked Resources</b> property page for a project resource |
| and at the workspace level on the |
| <a class="command-link" href='javascript:executeCommand("org.eclipse.ui.window.preferences(preferencePageId=org.eclipse.ui.preferencePages.LinkedResources)")'> |
| <img src="PLUGINS_ROOT/org.eclipse.help/command_link.svg" alt="command link"> |
| <b>General > Workspace > Linked Resources</b></a> preference page. |
| </p> |
| <h3 class="related">Related concepts</h3> |
| <a href="concepts-13.htm">Linked resources</a><br> |
| |
| <h3 class="related">Related tasks</h3> |
| <a href="../tasks/tasks-45.htm">Creating linked resources</a><br> |
| <a href="../tasks/tasks-49.htm">Viewing resource properties</a><br> |
| |
| <h3 class="related">Related reference</h3> |
| <a href="../reference/ref-14b.htm">Linked resources</a> |
| |
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