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See the License for the specific language governing permissions and limitations under the License. --> <html lang="en"> <head> <link rel="stylesheet" type="text/css" href="../stylesheets/style.css"> <title>Resources and Resource Collections</title> </head> <body> <h2 id="resource">Resources</h2> <p> A file-like entity can be abstracted to the concept of a <em>resource</em>. In addition to providing access to file-like attributes, a resource implementation should, when possible, provide the means to read content from and/or write content to the underlying entity. Although the resource concept was introduced in Apache Ant 1.5.2, resources are available for explicit use <em>since Ant 1.7</em>. </p> <h3>Built-in resource types</h3> The built-in resource types are: <ul> <li><a href="#basic">resource</a>—a basic resource.</li> <li><a href="#bzip2resource">bzip2resource</a>—a BZip2 compressed resource.</li> <li><a href="#file">file</a>—a file.</li> <li><a href="#gzipresource">gzipresource</a>—a GZip compressed resource.</li> <li><a href="#javaresource">javaresource</a>—a resource loadable via a Java classloader.</li> <li><a href="#javaconstant">javaconstant</a>—a constant in a class loadable via a Java classloader.</li> <li><a href="#propertyresource">propertyresource</a>—an Ant property.</li> <li><a href="#string">string</a>—a text string.</li> <li><a href="#tarentry">tarentry</a>—an entry in a tar file.</li> <li><a href="#url">url</a>—a URL.</li> <li><a href="#xzresource">xzresource</a>—an XZ compressed resource.</li> <li><a href="#zipentry">zipentry</a>—an entry in a zip file.</li> </ul> <h4 id="basic">resource</h4> <p> A basic resource. Other resource types derive from this basic type; as such all its attributes are available, though in most cases irrelevant attributes will be ignored. This and all resource implementations are also usable as single-element <a href="#collection">resource collections</a>. </p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>name</td> <td>The name of this resource</td> <td>No</td> </tr> <tr> <td>exists</td> <td>Whether this resource exists</td> <td>No; default <q>true</q></td> </tr> <tr> <td>lastmodified</td> <td>The last modification time of this resource</td> <td>No</td> </tr> <tr> <td>directory</td> <td>Whether this resource is directory-like</td> <td>No; default <q>false</q></td> </tr> <tr> <td>size</td> <td>The size of this resource</td> <td>No</td> </tr> <tr> <td>refid</td> <td>Makes this <code>resource</code> a <a href="../using.html#references">reference</a> to a <code>resource</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h4 id="file">file</h4> <p>Represents a file accessible via local filesystem conventions.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>file</td> <td>The file represented by this resource</td> <td>Yes</td> </tr> <tr> <td>basedir</td> <td>The base directory of this resource. When this attribute is set, attempts to access the name of the resource will yield a path relative to this location.</td> <td>No</td> </tr> <tr> <td>refid</td> <td>Makes this <code>file</code> a <a href="../using.html#references">reference</a> to a <code>file</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h4 id="javaresource">javaresource</h4> <p>Represents a resource loadable via a Java classloader.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>name</td> <td>The name of the resource.</td> <td>Yes</td> </tr> <tr> <td>classpath</td> <td>the classpath to use when looking up a resource.</td> <td>No</td> </tr> <tr> <td>classpathref</td> <td>the classpath to use when looking up a resource, given as <a href="../using.html#references">reference</a> to a <code><path></code> defined elsewhere.</td> <td>No</td> </tr> <tr> <td>loaderRef</td> <td>the name of the loader that is used to load the resource, constructed from the specified classpath.</td> <td>No</td> </tr> <tr> <td>parentFirst</td> <td>Whether to consult the parent classloader first—the parent classloader most likely is the system classloader—when using a nested classpath.<br/> <em>Since Ant 1.8.0</em></td> <td>No; defaults to <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>javaresource</code> a <a href="../using.html#references">reference</a> to a <code>javaresource</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <p>The classpath can also be specified as nested classpath element, where <code><classpath></code> is a <a href="../using.html#path">path-like structure</a>.</p> <h4 id="javaconstant">javaconstant</h4> <p>Loads the value of a Java constant. As a specialisation of <a href="#javaresource">javaresource</a> all of its attributes and nested elements are supported. A constant must be specified as <code>public static</code> otherwise it could not be loaded.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>name</td> <td>The name of the resource. Must be specified as full qualified field name.</td> <td>Yes</td> </tr> <tr> <td>refid</td> <td>Makes this <code>javaconstant</code> a <a href="../using.html#references">reference</a> to a <code>javaconstant</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Examples</h5> <p>This loads the value of the constant <code>VERSION</code> of the <code>org.acme.Main</code> class into the <var>version</var>-property. The classpath for finding that class is provided via nested <code>classpath</code> element.</p> <pre> <loadresource property="version"> <javaconstant name="org.acme.Main.VERSION"> <classpath> <pathelement location="${acme.lib.dir}"/> </classpath> </javaconstant> </loadresource></pre> <p>Create a new file <samp>c:/temp/org.apache.tools.ant.Main.DEFAULT_BUILD_FILENAME</samp> with the content of that constant (<q>build.xml</q>).</p> <pre> <copy todir="c:/temp"> <javaconstant name="org.apache.tools.ant.Main.DEFAULT_BUILD_FILENAME"/> </copy></pre> <h4 id="zipentry">zipentry</h4> <p>Represents an entry in a ZIP archive. The archive can be specified using the archive attribute or a nested single-element resource collection. <code>zipentry</code> only supports file system resources as nested elements.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>zipfile</td> <td>The zip file containing this resource</td> <td rowspan="2">Yes, unless a nested resource collection has been specified</td> </tr> <tr> <td>archive</td> <td class="left">alias of <var>zipfile</var></td> </tr> <tr> <td>name</td> <td>The name of the archived resource</td> <td>Yes</td> </tr> <tr> <td>encoding</td> <td>The encoding of the zipfile</td> <td>No; defaults to default JVM character encoding</td> </tr> <tr> <td>refid</td> <td>Makes this <code>propertyresource</code> a <a href="../using.html#references">reference</a> to a <code>propertyresource</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h4 id="tarentry">tarentry</h4> <p>Represents an entry in a TAR archive. The archive can be specified using the archive attribute or a nested single-element resource collection.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>archive</td> <td>The tar archive containing this resource</td> <td>Yes, unless a nested resource collection has been specified</td> </tr> <tr> <td>name</td> <td>The name of the archived resource</td> <td>Yes</td> </tr> </table> <h4 id="gzipresource">gzipresource</h4> <p>This is not a stand-alone resource, but a wrapper around another resource providing compression of the resource's contents on the fly. A single element resource collection must be specified as a nested element.</p> <h4 id="bzip2resource">bzip2resource</h4> <p>This is not a stand-alone resource, but a wrapper around another resource providing compression of the resource's contents on the fly. A single element resource collection must be specified as a nested element.</p> <h4 id="xzresource">xzresource</h4> <p>This is not a stand-alone resource, but a wrapper around another resource providing compression of the resource's contents on the fly. A single element resource collection must be specified as a nested element.</p> <p>XZ compression support has been added <em>since Apache Ant 1.10.1</em> and depends on external libraries not included in the Ant distribution. See <a href="../install.html#librarydependencies">Library Dependencies</a> for more information.</p> <h4 id="url">url</h4> <p>Represents a URL.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>url</td> <td>The URL to expose</td> <td rowspan="3">Exactly one of these</td> </tr> <tr> <td>file</td> <td class="left">The file to expose as a <code>file:</code> URL</td> </tr> <tr> <td>baseUrl</td> <td class="left">The base URL which must be combined with <var>relativePath</var></td> </tr> <tr> <td>relativePath</td> <td>Relative path that defines the URL when combined with <var>baseUrl</var></td> <td>If using <var>baseUrl</var></td> </tr> <tr> <td>refid</td> <td>Makes this <code>url</code> a <a href="../using.html#references">reference</a> to an <code>url</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h4 id="string">string</h4> <p>Represents a Java String. It can be written to, but only once, after which it will be an error to write to again.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>value</td> <td>The value of this resource</td> <td>No</td> </tr> <tr> <td>refid</td> <td>Makes this <code>string</code> a <a href="../using.html#references">reference</a> to a <code>string</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <p>The resource also supports nested text, which can only be supplied if the <var>value</var> attribute is unset:</p> <pre> <string> self.log("Ant version =${ant.version}"); </string></pre> <h4 id="propertyresource">propertyresource</h4> <p>Represents an Ant property.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>name</td> <td>The property name</td> <td>Yes</td> </tr> </table> <hr/> <h2 id="collection">Resource Collections</h2> <p> A resource collection is an abstraction of an entity that groups together a number of <a href="#resource">resources</a>. Several of Ant's "legacy" datatypes have been modified to behave as resource collections: </p> <ul> <li><a href="fileset.html">fileset</a>, <a href="dirset.html">dirset</a>, <a href="multirootfileset.html">multirootfileset</a>, <a href="filelist.html">filelist</a>, and <a href="../using.html#path">path</a> (and derivative types) expose <a href="#file">file</a> resources </li> <li><a href="tarfileset.html">tarfileset</a> can expose <a href="#file">file</a> or <a href="#tarentry">tarentry</a> resources depending on configuration </li> <li><a href="zipfileset.html">zipfileset</a> can expose <a href="#file">file</a> or <a href="#zipentry">zipentry</a> resources depending on configuration </li> <li><a href="propertyset.html">propertyset</a> exposes <a href="#propertyresource">property</a> resources </li> </ul> <p>Strangely, some tasks can even legitimately behave as resource collections:</p> <ul> <li><a href="../Tasks/concat.html">concat</a> exposes a concatenated resource, and adds e.g. <a href="filterchain.html">filtering</a> to Ant's resource-related capabilities. </li> </ul> <h3>Additional built-in resource collections</h3> The additional built-in resource collections are: <ul> <li><a href="#resources">resources</a>—generic resource collection</li> <li><a href="#files">files</a>—collection of files similar to <a href="fileset.html">fileset</a></li> <li><a href="#restrict">restrict</a>—restrict a resource collection to include only resources meeting specified criteria</li> <li><a href="#sort">sort</a>—sorted resource collection</li> <li><a href="#first">first</a>—first <em>n</em> resources from a nested collection</li> <li><a href="#last">last</a>—last <em>n</em> resources from a nested collection</li> <li><a href="#allbutfirst">allbutfirst</a>—all except the first <em>n</em> resources from a nested collection</li> <li><a href="#allbutlast">allbutlast</a>—all except the last <em>n</em> resources from a nested collection</li> <li><a href="#tokens">tokens</a>—<a href="#string">string</a> tokens gathered from a nested collection</li> <li><a href="#union">union</a>—set union of nested resource collections</li> <li><a href="#intersect">intersect</a>—set intersection of nested resource collections</li> <li><a href="#difference">difference</a>—set difference of nested resource collections</li> <li><a href="#mappedresources">mappedresources</a>—generic resource collection wrapper that maps the names of the nested resources using a <a href="mapper.html">mapper</a>.</li> <li><a href="#archives">archives</a>—wraps around different resource collections and treats the nested resources as ZIP or TAR archives that will be extracted on the fly.</li> <li><a href="#resourcelist">resourcelist</a>—a collection of resources whose names have been read from another resource.</li> </ul> <h4 id="resources">resources</h4> <p> A generic resource collection, designed for use with <a href="../using.html#references">references</a>. For example, if a third-party Ant task generates a resource collection of an unknown type, it can still be accessed via a <code><resources></code> collection. The secondary use of this collection type is as a container of other resource collections, preserving the order of nested collections as well as duplicate resources (contrast with <a href="#union">union</a>). </p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>cache</td> <td>Whether to cache results. <em>since Ant 1.8.0</em></td> <td>No; default <q>false</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>resourcecollection</code> a <a href="../using.html#references">reference</a> to a <code>resourcecollection</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h4 id="files">files</h4> <p>A group of files. These files are matched by <strong>absolute</strong> patterns taken from a number of <a href="patternset.html">PatternSets</a>. These can be specified as nested <code><patternset></code> elements. In addition, <code><files></code> holds an implicit PatternSet and supports the nested <code><include></code>, <code><includesfile></code>, <code><exclude></code> and <code><excludesfile></code> elements of PatternSet directly, as well as PatternSet's attributes. </p> <p><a href="selectors.html">File Selectors</a> are available as nested elements. A file must be selected by all selectors in order to be included; <code><files></code> is thus equivalent to an <code><and></code> file selector container. </p> <p><strong>More simply put</strong>, this type is equivalent to <a href="fileset.html">fileset</a> with no base directory. <strong>Please note</strong> that without a base directory, filesystem scanning is based entirely on include and exclude patterns. A <a href="selectors.html#filenameselect">filename</a> (or any) selector can <em>only</em> influence the scanning process <em>after</em> the file has been included based on pattern-based selection. </p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>includes</td> <td>Comma- or space-separated list of patterns of files that must be included</td> <td rowspan="2">At least one of these</td> </tr> <tr> <td>includesfile</td> <td class="left">Name of a file; each line of this file is taken to be an include pattern.</td> </tr> <tr> <td>excludes</td> <td>Comma- or space-separated list of patterns of files that must be excluded</td> <td rowspan="2">No; defaults to default excludes or none if <var>defaultexcludes</var> is <q>no</q></td> </tr> <tr> <td>excludesfile</td> <td class="left">Name of a file; each line of this file is taken to be an exclude pattern.</td> </tr> <tr> <td>defaultexcludes</td> <td>Whether <a href="../dirtasks.html#defaultexcludes">default excludes</a> should be used</td> <td>No; default <q>true</q></td> </tr> <tr> <td>casesensitive</td> <td>Whether patterns are case-sensitive</td> <td>No; default <q>true</q></td> </tr> <tr id="followsymlinks"> <td>followsymlinks</td> <td>Whether to follow symbolic links (see note <a href="#symlink">below</a>)</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>files</code> a <a href="../using.html#references">reference</a> to a <code>files</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <p id="symlink"><a href="#followsymlinks"><strong>Note</strong></a>: All files/directories for which the canonical path is different from its path are considered symbolic links. On Unix systems this usually means the file really is a symbolic link but it may lead to false results on other platforms.</p> <h4 id="restrict">restrict</h4> <p>Restricts a nested resource collection using resource selectors:</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>restrict</code> a <a href="../using.html#references">reference</a> to a <code>restrict</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <p>Nested resource selectors are used to "narrow down" the included resources, combined via a logical <em>AND</em>. These are patterned after <a href="selectors.html">file selectors</a> but are, unsurprisingly, targeted to resources. Several built-in resource selectors are available in the internal <a href="antlib.html">antlib</a> <code>org.apache.tools.ant.types.resources.selectors</code>:</p> <ul> <li><a href="#rsel.name">name</a>—select resources by name.</li> <li><a href="#rsel.exists">exists</a>—select existing resources.</li> <li><a href="#rsel.date">date</a>—select resources by date.</li> <li><a href="#rsel.type">type</a>—select resources by type.</li> <li><a href="#rsel.size">size</a>—select resources by size.</li> <li><a href="#rsel.instanceof">instanceof</a>—select resources by class or Ant datatype.</li> <li><a href="#rsel.and">and</a>—<q>and</q> nested resource selectors.</li> <li><a href="#rsel.or">or</a>—<q>or</q> nested resource selectors.</li> <li><a href="#rsel.not">not</a>—<q>not</q> a nested resource selector.</li> <li><a href="#rsel.none">none</a>—select resources selected by no nested resource selectors.</li> <li><a href="#rsel.majority">majority</a>—select resources selected by a majority of nested resource selectors.</li> <li><a href="selectors.html#modified">modified</a>—select resources which content has changed.</li> <li><a href="selectors.html#containsselect">contains</a>—select resources containing a particular text string.</li> <li><a href="selectors.html#regexpselect">containsregexp</a>—select resources whose contents match a particular regular expression.</li> <li><a href="#rsel.compare">compare</a>—select resources based on comparison to other resources.</li> <li><a href="selectors.html#readable">readable</a>—select files (resources must be files) if they are readable.</li> <li><a href="selectors.html#writable">writable</a>—select files (resources must be files) if they are writable.</li> </ul> <h5 id="rsel.name">name</h5> <p>Selects resources by name.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>name</td> <td>The name pattern to test using standard Ant patterns.</td> <td rowspan="2">Exactly one of the two</td> </tr> <tr> <td>regex</td> <td class="left">The regular expression matching files to select.</td> </tr> <tr> <td>casesensitive</td> <td>Whether name comparisons are case-sensitive</td> <td>No; default <q>true</q></td> </tr> <tr> <td>handledirsep</td> <td> If this is specified, the mapper will treat a \ character in a resource name or name attribute as a / for the purposes of matching. This attribute can be <q>true</q> or <q>false</q>. <em>Since Ant 1.8.0</em> <td>No; default <q>false</q></td> </tr> </table> <h5 id="rsel.exists">exists</h5> <p>Selects existing resources.</p> <h5 id="rsel.date">date</h5> <p>Selects resources by date.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>millis</td> <td>The comparison date/time in ms since January 1, 1970</td> <td rowspan="2">One of these</td> </tr> <tr> <td>datetime</td> <td class="left">The formatted comparison date/time</td> </tr> <tr> <td>pattern</td> <td>SimpleDateFormat-compatible pattern for use with the <code>datetime</code> attribute using the current locale</td> <td>No; default is <q>MM/dd/yyyy hh:mm a</q> using the US locale</td> </tr> <tr> <td>granularity</td> <td>The number of milliseconds leeway to use when comparing file modification times. This is needed because not every file system supports tracking the last modified time to the millisecond level.</td> <td>No; default varies by platform: FAT filesystems = 2 sec; Unix = 1 sec; NTFS = 1 ms.</td> </tr> <tr> <td>when</td> <td>One of <q>before</q>, <q>after</q>, <q>equal</q></td> <td>No; default <q>equal</q></td> </tr> </table> <h5 id="rsel.type">type</h5> <p>Selects resources by type (file or directory).</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>type</td> <td>One of <q>file</q>, <q>dir</q>, <q>any</q> (<em>since Ant 1.8</em>)</td> <td>Yes</td> </tr> </table> <h5 id="rsel.size">size</h5> <p>Selects resources by size.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>size</td> <td>The size to compare</td> <td>Yes</td> </tr> <tr> <td>when</td> <td>One of <q>equal</q>, <q>eq</q>, <q>greater</q>, <q>gt</q>, <q>less</q>, <q>lt</q>, <q>ge</q> (greater or equal), <q>ne</q> (not equal), <q>le</q> (less or equal)</td> <td>No; default <q>equal</q></td> </tr> </table> <h5 id="rsel.instanceof">instanceof</h5> <p>Selects resources by type.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>class</td> <td>The class of which the resource must be an instance</td> <td rowspan="2">One of these</td> </tr> <tr> <td>type</td> <td class="left">The Ant type that must be assignable from the resource</td> </tr> <tr> <td>uri</td> <td>The URI in which <var>type</var> must be defined</td> <td>No</td> </tr> </table> <h5 id="rsel.and">and</h5> <p>Selects a resource if it is selected by all nested resource selectors.</p> <h5 id="rsel.or">or</h5> <p>Selects a resource if it is selected by at least one nested resource selector.</p> <h5 id="rsel.not">not</h5> <p>Negates the selection result of the single nested resource selector allowed.</p> <h5 id="rsel.none">none</h5> <p>Selects a resource if it is selected by no nested resource selectors.</p> <h5 id="rsel.majority">majority</h5> <p>Selects a resource if it is selected by the majority of nested resource selectors.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>allowtie</td> <td>Whether a tie (when there is an even number of nested resource selectors) is considered a majority</td> <td>No; default <q>true</q></td> </tr> </table> <h5 id="rsel.compare">compare</h5> <p>Selects a resource based on its comparison to one or more "control" resources using nested <a href="#rcmp">resource comparators</a>.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>when</td> <td>Comparison (<q>equal</q>/<q>eq</q>, <q>greater</q>/<q>gt</q>, <q>less</q>/<q>lt</q>, <q>le</q> (less or equal), <q>ge</q> (greater or equal), <q>ne</q> (not equal).</td> <td>No; default <q>equal</q></td> </tr> <tr> <td>against</td> <td>Quantifier (<q>all</q>/<q>each</q>/<q>every</q>, <q>any</q>/<q>some</q>, (exactly) <q>one</q>, <q>most</q>/<q>majority</q>, <q>none</q>.</td> <td>No; default <q>all</q></td> </tr> </table> <h6>Parameters specified as nested elements</h6> <p>The resources against which comparisons will be made must be specified using the nested <control> element, which denotes a <a href="#resources">resources</a> collection.</p> <h6>Examples</h6> <p>Assuming the namespace settings</p> <pre> rsel="antlib:org.apache.tools.ant.types.resources.selectors" rcmp="antlib:org.apache.tools.ant.types.resources.comparators"</pre> <pre> <restrict> <fileset dir="src" includes="a,b,c,d,e,f,g"/> <rsel:compare when="le" against="all"> <control> <resource name="d"/> </control> <rcmp:name/> </rsel:compare> </restrict></pre> <p>Selects files <samp>a</samp>, <samp>b</samp>, <samp>c</samp>, and <samp>d</samp>.</p> <pre> <project rsel="antlib:org.apache.tools.ant.types.resources.selectors"> <macrodef name="copyFromPath"> <attribute name="todir"/> <attribute name="refid"/> <element name="nested-resource-selectors" optional="yes" implicit="true"/> <sequential> <mkdir dir="@{todir}" taskname="copyFromPath"/> <copy todir="@{todir}" taskname="copyFromPath"> <restrict> <path refid="@{refid}"/> <rsel:or> <nested-resource-selectors/> </rsel:or> </restrict> <flattenmapper/> </copy> </sequential> </macrodef> <copyFromPath refid="classpath" todir="todir"> <rsel:name name="log4j.properties"/> <rsel:name name="default.properties"/> </copyFromPath> </project></pre> <p>Creates the <samp>todir</samp> directory and copies (if present) the files <samp>log4j.properties</samp> and <samp>default.properties</samp> from the classpath (already used while compiling).</p> <pre> <project> <filelist id="allfiles" dir="${ant.home}/bin" files="ant.cmd,foo.txt,ant.bat,bar.txt,ant"/> <restrict id="missingfiles"> <filelist refid="allfiles"/> <rsel:not xmlns:rsel="antlib:org.apache.tools.ant.types.resources.selectors"> <rsel:exists/> </rsel:not> </restrict> <echo>These files are missed: ${toString:missingfiles}</echo> </project></pre> <p>The resource collection <q>allfiles</q> defines a list of files which are expected. The restrict <q>missingfiles</q> uses the <code><not><exists></code> selector for getting all files which are not present. Finally we use the <code>toString:</code> <a href="../using.html#pathshortcut">pathshortcut</a> for getting them in a readable form: <code>[echo] These files are missed: ....foo.txt;....bar.txt</code></p> <h4 id="sort">sort</h4> <p>Sorts a nested resource collection according to the resources' natural order, or by one or more nested <a href="#rcmp">resource comparators</a>:</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>sort</code> a <a href="../using.html#references">reference</a> to a <code>sort</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <p>The sort can be controlled and customized by specifying one or more resource comparators. Resources can be sorted according to multiple criteria; the first specified is the "outermost", while the last specified is the "innermost". Several built-in resource comparators are available in the internal <a href="antlib.html">antlib</a> <code>org.apache.tools.ant.types.resources.comparators</code>:</p> <h5 id="rcmp">Resource Comparators</h5> <ul> <li><a href="#rcmp.name">name</a>—sort resources by name</li> <li><a href="#rcmp.exists">exists</a>—sort resources by existence</li> <li><a href="#rcmp.date">date</a>—sort resources by date</li> <li><a href="#rcmp.type">type</a>—sort resources by type</li> <li><a href="#rcmp.size">size</a>—sort resources by size</li> <li><a href="#rcmp.content">content</a>—sort resources by content</li> <li><a href="#rcmp.reverse">reverse</a>—reverse the natural sort order, or that of a single nested resource comparator</li> </ul> <h6 id="rcmp.name">name</h6> <p>Sort resources by name.</p> <h6 id="rcmp.exists">exists</h6> <p>Sort resources by existence. Not existing is considered "less than" existing.</p> <h6 id="rcmp.date">date</h6> <p>Sort resources by date.</p> <h6 id="rcmp.type">type</h6> <p>Sort resources by type (file or directory). Because directories contain files, they are considered "greater".</p> <h6 id="rcmp.size">size</h6> <p>Sort resources by size.</p> <h6 id="rcmp.content">content</h6> <p>Sort resources by content.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>binary</td> <td>Whether content should be compared in binary mode. If <q>false</q>, content will be compared without regard to platform-specific line-ending conventions.</td> <td>No; default <q>true</q></td> </tr> </table> <h6 id="rcmp.reverse">reverse</h6> <p>Reverse the natural sort order, or that of a single nested comparator.</p> <h5>Examples</h5> <pre> <property name="eol" value="${line.separator}"/> <pathconvert property="sorted" pathsep="${eol}"> <sort> <tokens> <string value="foo bar etc baz"/> <stringtokenizer/> </tokens> </sort> </pathconvert></pre> <p>The resource of type string <q>foo bar etc baz</q> is split into four tokens by the <code>stringtokenizer</code>. These tokens are sorted and there <code>sorted</code> gets the value of <q>bar baz etc foo</q>.</p> <pre> <sort> <fileset dir="foo"/> <reverse xmlns="antlib:org.apache.tools.ant.types.resources.comparators"> <date/> </reverse> </sort></pre> <p>This takes all files from <samp>foo</samp> and sorts them by modification date in reverse order. Because the resource comparators used (<code><reverse></code> and <code><date></code>) are in an internal antlib their namespace must be set explicitly. </p> <h4 id="first">first</h4> <p>Includes the first <var>count</var> resources from a nested resource collection. This can be used in conjunction with the <a href="#sort">sort</a> collection, for example, to select the first few oldest, largest, etc. resources from a larger collection.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>count</td> <td>The number of resources to include</td> <td>No; default <q>1</q></td> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>first</code> a <a href="../using.html#references">reference</a> to a <code>first</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <h4 id="last">last</h4> <p><em>Since Ant 1.7.1</em></p> <p>Includes the last <var>count</var> resources from a nested resource collection. This can be used in conjunction with the <a href="#sort">sort</a> collection, for example, to select the last few oldest, largest, etc. resources from a larger collection.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>count</td> <td>The number of resources to include</td> <td>No; default <q>1</q></td> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>last</code> a <a href="../using.html#references">reference</a> to a <code>last</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <h4 id="allbutfirst">allbutfirst</h4> <p><em>Since Ant 1.9.5</em></p> <p>Includes all elements except for the first <var>count</var> resources from a nested resource collection. This can be used in conjunction with the <a href="#sort">sort</a> collection, for example, to select all but the first few oldest, largest, etc. resources from a larger collection.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>count</td> <td>The number of resources to exclude</td> <td>No; default <q>1</q></td> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>allbutfirst</code> a <a href="../using.html#references">reference</a> to an <code>allbutfirst</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <h4 id="allbutlast">allbutlast</h4> <p><em>Since Ant 1.9.5</em></p> <p>Includes all elements except for the last <var>count</var> resources from a nested resource collection. This can be used in conjunction with the <a href="#sort">sort</a> collection, for example, to select all but the last few oldest, largest, etc. resources from a larger collection.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>count</td> <td>The number of resources to exclude</td> <td>No; default <q>1</q></td> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>allbutlast</code> a <a href="../using.html#references">reference</a> to an <code>allbutlast</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <h4 id="tokens">tokens</h4> <p>Includes the <a href="#string">string</a> tokens gathered from a nested resource collection. Uses the same tokenizers supported by the <a href="filterchain.html#tokenfilter">TokenFilter</a>. Imaginative use of this resource collection can implement equivalents for such Unix functions as <kbd>sort</kbd>, <kbd>grep -c</kbd>, <kbd>wc</kbd> and <kbd>wc -l</kbd>.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>encoding</td> <td>The encoding of the nested resources</td> <td>No; default is default JVM character encoding</td> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>tokens</code> a <a href="../using.html#references">reference</a> to a <code>tokens</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <ul> <li>A single resource collection is required.</li> <li>One nested tokenizer may be specified. If omitted, a <a href="filterchain.html#linetokenizer">LineTokenizer</a> will be used. </li> </ul> <h5>Examples</h5> <pre> <concat> <union> <sort> <tokens> <resources refid="input"/> <linetokenizer includedelims="true"/> </tokens> </sort> </union> </concat></pre> <p>Implements Unix <kbd>sort -u</kbd> against resource collection <q>input</q>.</p> <h4 id="setlogic">Set operations</h4> <p>The following resource collections implement set operations:</p> <ul> <li><a href="#union">union</a></li> <li><a href="#intersect">intersect</a></li> <li><a href="#difference">difference</a></li> </ul> <h4 id="union">union</h4> <p>Union of nested resource collections.</p> <p>The only supported attribute is <code>refid</code> which makes this <code>union</code> a <a href="../using.html#references">reference</a> to an <code>union</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</p> <h4 id="intersect">intersect</h4> <p>Intersection of nested resource collections.</p> <p>The only supported attribute is <code>refid</code> which makes this <code>intersect</code> a <a href="../using.html#references">reference</a> to an <code>intersect</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</p> <h4 id="difference">difference</h4> <p>Difference of nested resource collections.</p> <p>The following attributes apply to all set-operation resource collections:</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>cache</td> <td>Whether to cache results; disabling may seriously impact performance</td> <td>No; default <q>true</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>difference</code> a <a href="../using.html#references">reference</a> to a <code>difference</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Examples</h5> <pre> <resources id="A"> <string value="a"/> <string value="b"/> </resources> <resources id="B"> <string value="b"/> <string value="c"/> </resources> <union id="union"><resources refid="A"/><resources refid="B"/></union> <intersect id="intersect"><resources refid="A"/><resources refid="B"/></intersect> <difference id="difference"><resources refid="A"/><resources refid="B"/></difference> <echo> A: ${toString:A} = a;b B: ${toString:B} = b;c union : ${toString:union} = a;b;c intersect : ${toString:intersect} = b difference: ${toString:difference} = a;c </echo></pre> <h4 id="mappedresources">mappedresources</h4> <p><em>Since Ant 1.8.0</em></p> <p>Wraps another resource collection and maps the names of the nested resources using a <a href="mapper.html">mapper</a>.</p> <p>Even if <var>mappedresources</var> wraps a resource collection that consists of file-system based resources, <var>mappedresources</var> will not appear to be file-system based. This means you can't use <var>mappedresources</var> with tasks that only allow file-system based resources.</p> <h5>Parameters specified as attributes</h5> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>cache</td> <td>Whether to cache results; enabling may improve performance. <em>Since Ant 1.8.1</em></td> <td>No; default <q>false</q></td> </tr> <tr> <td>enablemultiplemappings</td> <td>If <q>true</q> the collection will use all the mappings for a given source path. If <q>false</q> it will only process the first resource. <em>since Ant 1.8.1</em></td> <td>No; defaults to <q>false</q></td> </tr> <tr> <td>refid</td> <td>Makes this <code>mappedresources</code> a <a href="../using.html#references">reference</a> to a <code>mappedresources</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p>A single resource collection is required.</p> <p>A single <a href="mapper.html">mapper</a> can be used to map names. If no mapper has been given (which doesn't make any sense, honestly), an identity mapper will be used.</p> <h5>Examples</h5> <p>Copies all files from a given directory to a target directory adding <samp>.bak</samp> as an extension. Note this could be done with a <code>mapper</code> nested into <code>copy</code> directly as well.</p> <pre> <copy todir="${target}"> <mappedresources> <fileset dir="${src}"/> <globmapper from="*" to="*.bak"/> </mappedresources> </copy></pre> <p>Creates a WAR archive adding all <code>CLASSPATH</code> entries that are files to the <samp>WEB-INF/lib</samp> directory without keeping their files-system structure.</p> <pre> <war destfile="${output}"> <mappedresources> <restrict> <path path="${java.class.path}"/> <type type="file"/> </restrict> <chainedmapper> <flattenmapper/> <globmapper from="*" to="WEB-INF/lib/*"/> </chainedmapper> </mappedresources> </war></pre> <h4 id="archives">archives</h4> <p><em>Since Ant 1.8.0</em></p> <p>This resource collection accepts an arbitrary number of nested resources and assumes that all those resources must be either ZIP or TAR archives. The resources returned by <code><archives></code> are the contents of the nested archives.</p> <p>This resource collection is a generalization of <a href="../Tasks/zip.html#zipgroupfileset">zipgroupfileset</a> which is only supported by the zip family of tasks.</p> <p>The only supported attribute is <code>refid</code> which makes this <code>archives</code> a <a href="../using.html#references">reference</a> to an <code>archives</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</p> <h5>Parameters specified as nested elements</h5> <p><code><archives></code> has two nested elements <code><zips></code> and <code><tars></code> that are <a href="#union">unions</a> themselves, i.e. they accept arbitrary many resource(collection)s as nested elements.</p> <p>The nested resources of <code><zips></code> are treated as ZIP archives, the nested resources of <code><tars></code> as TAR archives.</p> <h5>Examples</h5> <p>Copies all files from all jars that are on the classpath to <samp>${target}</samp>.</p> <pre> <copy todir="${target}"> <archives> <zips> <restrict> <path path="${java.class.path}"/> <name name="*.jar"/> </restrict> </zips> </archives> </copy></pre> <h4 id="resourcelist">resourcelist</h4> <p><em>Since Ant 1.8.0</em></p> <p>This resource collection accepts an arbitrary number of nested resources, reads those resources and returns a resource for each line read.</p> <p>If the line contains a colon, Ant will try to use it as an URL and if that fails (or the line doesn't contain a colon) will return a file resource with the line's content as its name.</p> <p>Properties will be expanded for each line. If the property expansion yields a resource object rather than a string (for example because of custom property helpers), the resources will be returned directly.</p> <p><code><resourcelist></code> is a generalization of <a href="filelist.html"><code><filelist></code></a>.</p> <table class="attr"> <tr> <th scope="col">Attribute</th> <th scope="col">Description</th> <th scope="col">Required</th> </tr> <tr> <td>encoding</td> <td>The encoding of the nested resources</td> <td>No; default is default JVM character encoding</td> </tr> <tr> <td>basedir</td> <td>Base directory that is used to resolve relative file names against. Is also used to provide a base directory to the FileResources created by this resource collection. <em>Since Ant 1.10.4</em> </td> <td>No</td> </tr> <tr> <td>refid</td> <td>Makes this <code>resourcelist</code> a <a href="../using.html#references">reference</a> to a <code>resourcelist</code> defined elsewhere. If specified no other attributes or nested elements are allowed.</td> <td>No</td> </tr> </table> <h5>Parameters specified as nested elements</h5> <p><code><resourcelist></code> accepts arbitrary many resource(collection)s as nested elements.</p> <p>In addition <code><resourcelist></code> supports nested <code><filterchain></code> elements that can be used to filter/modify the read resources before their lines get expanded. Such a nested element corresponds to a <a href="filterchain.html">filterchain</a>.</p> <h5>Examples</h5> <p>The following example copies a file from the first URL of several alternatives that can actually be reached. It assumes that the file <samp>mirrors.txt</samp> looks like</p> <pre> mirrors.txt: https://best.mirror.example.org/ http://second.best.mirror.example.org/mirror/of/best/ https://yet.another.mirror/ https://the.original.site/</pre> <pre> <copy todir="${target}"> <first> <restrict> <resourcelist> <file file="mirrors.txt"/> </resourcelist> <exists/> </restrict> </first> </copy></pre> </body> </html>