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| <title>jarlib-resolve Task</title> |
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| <h2><a name="jarlib-resolve">jarlib-resolve</a></h2> |
| <h3>Description</h3> |
| <p>Try to locate a jar to satisfy an extension and place |
| location of jar into property. The task allows you to |
| add a number of resolvers that are capable of locating a |
| library for a specifc extension. Each resolver will be attempted |
| in specified order until library is found or no resolvers are left. |
| If no resolvers are left and failOnError is true then a BuildException |
| will be thrown.</p> |
| |
| <p>Note that this task |
| works with extensions as defined by the "Optional Package" specification. |
| For more information about optional packages, see the document |
| <em>Optional Package Versioning</em> in the documentation bundle for your |
| Java2 Standard Edition package, in file |
| <code>guide/extensions/versioning.html</code> or online at |
| <a href="http://java.sun.com/j2se/1.3/docs/guide/extensions/versioning.html"> |
| http://java.sun.com/j2se/1.3/docs/guide/extensions/versioning.html</a>.</p> |
| <p>See the Extension and ExtensionSet documentation for further details</p> |
| |
| <h3>Parameters</h3> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top">property</td> |
| <td valign="top">The name of property to set to library location.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| <tr> |
| <td valign="top">failOnError</td> |
| <td valign="top">True if failure to locate library should result in build exception.</td> |
| <td valign="top" align="center">No, defaults to true.</td> |
| </tr> |
| <tr> |
| <td valign="top">checkExtension</td> |
| <td valign="top">True if librarys returned by nested resolvers should be checked to see if |
| they supply extension.</td> |
| <td valign="top" align="center">No, defaults to true.</td> |
| </tr> |
| </table> |
| <h3>Parameters specified as nested elements</h3> |
| |
| <h4>extension</h4> |
| <p><a href="../OptionalTypes/extension.html">Extension</a> the extension |
| to resolve. Must be present</p> |
| |
| <h4>location</h4> |
| <p>The location sub element allows you to look for a library in a |
| location relative to project directory.</p> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top">location</td> |
| <td valign="top">The pathname of library.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| </table> |
| |
| <h4>url</h4> |
| <p>The url resolver allows you to download a library from a URL to a |
| local file.</p> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top">url</td> |
| <td valign="top">The URL to download.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| <tr> |
| <td valign="top">destfile</td> |
| <td valign="top">The file to download URL into.</td> |
| <td valign="top" align="center">No, But one of destfile or |
| destdir must be present</td> |
| </tr> |
| <tr> |
| <td valign="top">destdir</td> |
| <td valign="top">The directory in which to place downloaded file.</td> |
| <td valign="top" align="center">No, But one of destfile or |
| destdir must be present</td> |
| </tr> |
| </table> |
| |
| <h4>ant</h4> |
| <p>The ant resolver allows you to run a ant build file to generate a library.</p> |
| <table border="1" cellpadding="2" cellspacing="0"> |
| <tr> |
| <td valign="top"><b>Attribute</b></td> |
| <td valign="top"><b>Description</b></td> |
| <td align="center" valign="top"><b>Required</b></td> |
| </tr> |
| <tr> |
| <td valign="top">antfile</td> |
| <td valign="top">The build file.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| <tr> |
| <td valign="top">destfile</td> |
| <td valign="top">The file that the ant build creates.</td> |
| <td valign="top" align="center">Yes</td> |
| </tr> |
| <tr> |
| <td valign="top">target</td> |
| <td valign="top">The target to run in build file.</td> |
| <td valign="top" align="center">No</td> |
| </tr> |
| </table> |
| |
| <h3>Examples</h3> |
| <p><b>Resolve Extension to file.</b> If file does not exist or file |
| does not implement extension then throw an exception.</p> |
| <pre> |
| <extension id="dve.ext" |
| extensionName="org.realityforge.dve" |
| specificationVersion="1.2" |
| specificationVendor="Peter Donald"/> |
| |
| <jarlib-resolve property="dve.library"> |
| <extension refid="dve.ext"/> |
| <location location="/opt/jars/dve.jar"/> |
| </jarlib-resolve> |
| </pre> |
| |
| <p><b>Resolve Extension to url.</b> If url does not exist or can not write |
| to destfile or files does not implement extension then throw an exception.</p> |
| <pre> |
| <extension id="dve.ext" |
| extensionName="org.realityforge.dve" |
| specificationVersion="1.2" |
| specificationVendor="Peter Donald"/> |
| |
| <jarlib-resolve property="dve.library"> |
| <extension refid="dve.ext"/> |
| <url url="http://www.realityforge.net/jars/dve.jar" destfile="lib/dve.jar"/> |
| </jarlib-resolve> |
| </pre> |
| |
| <p><b>Resolve Extension to file produce by ant build.</b> If file does not get produced |
| or ant file is missing or build fails then throw an exception (Note does not check |
| that library implements extension).</p> |
| <pre> |
| <extension id="dve.ext" |
| extensionName="org.realityforge.dve" |
| specificationVersion="1.2" |
| specificationVendor="Peter Donald"/> |
| |
| <jarlib-resolve property="dve.library" checkExtension="false"> |
| <extension refid="dve.ext"/> |
| <ant antfile="../dve/build.xml" target="main" destfile="lib/dve.jar"/> |
| </jarlib-resolve> |
| </pre> |
| |
| <p><b>Resolve Extension via multiple methods.</b> First check local file to see if it implements |
| extension. If it does not then try to build it from source in parralel directory. If that |
| fails then finally try to download it from a website. If all steps fail then throw a build |
| exception.</p> |
| <pre> |
| <extension id="dve.ext" |
| extensionName="org.realityforge.dve" |
| specificationVersion="1.2" |
| specificationVendor="Peter Donald"/> |
| |
| <jarlib-resolve property="dve.library"> |
| <extension refid="dve.ext"/> |
| <location location="/opt/jars/dve.jar"/> |
| <ant antfile="../dve/build.xml" target="main" destfile="lib/dve.jar"/> |
| <url url="http://www.realityforge.net/jars/dve.jar" destfile="lib/dve.jar"/> |
| </jarlib-resolve> |
| </pre> |
| |
| <hr><p align="center">Copyright © 2002 Apache Software Foundation. |
| All rights Reserved.</p> |
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