org.jvnet.maven.plugin.antrun.GraphDefTask Maven / Gradle / Ivy

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This extended antrun maven plugin enables users not only to run ant scripts embedded in the POM, but also to reference maven dependencies using Ant task classes. This enables the user to delegate more complex tasks to Ant such as constructing file-based installation distros.

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package org.jvnet.maven.plugin.antrun;

import org.apache.tools.ant.BuildException;

/**
 * Computes a dependency graph by applying a filter, then store it to the current project
 * so that it can be used later with <graphRef> filter.
 *
 * 
 * The name is chosen to match with other xxxDef tasks in Ant, like taskDef, typeDef, etc.
 * 
 * @author Kohsuke Kawaguchi
 */
public class GraphDefTask extends DependencyGraphTask {
    private String id;
    protected GraphFilter filter;

    public void setId(String id) {
        this.id = id;
    }

    /**
     * Adds a {@link GraphFilter} child. Ant will invoke this for each child element given in build script.
     */
    public void add(GraphFilter child) {
        if(filter!=null)
            throw new BuildException("Too many filters are given");
        this.filter = child;
    }

    public void execute() throws BuildException {
        if(id==null)
            throw new BuildException("@id is required");

        getProject().addReference(id,buildGraph(filter));
    }
}