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/*
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowlegement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowlegement may appear in the software itself,
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* if and wherever such third-party acknowlegements normally appear.
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*
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* 4. The names "Ant" and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Group.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package org.apache.tools.ant.taskdefs.condition;
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import org.apache.tools.ant.BuildException;
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import org.apache.tools.ant.ProjectComponent;
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import org.apache.tools.ant.types.Reference;
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/**
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* Condition that tests whether a given reference has been defined.
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*
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* <p>Optionally tests whether it is of a given type/class.</p>
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*
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* @author Stefan Bodewig
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* @since Ant 1.6
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* @version $Revision: 1.3 $
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*/
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public class IsReference extends ProjectComponent implements Condition {
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private Reference ref;
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private String type;
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public void setRefid(Reference r) {
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ref = r;
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}
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public void setType(String type) {
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this.type = type;
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}
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public boolean eval() throws BuildException {
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if (ref == null) {
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throw new BuildException("No reference specified for isreference "
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+ "condition");
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}
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Object o = getProject().getReference(ref.getRefId());
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if (o == null) {
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0
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return false;
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} else if (type == null) {
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return true;
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} else {
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Class typeClass =
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(Class) getProject().getDataTypeDefinitions().get(type);
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if (typeClass == null) {
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typeClass =
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(Class) getProject().getTaskDefinitions().get(type);
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}
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if (typeClass == null) {
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// don't know the type, should throw exception instead?
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return false;
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}
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return typeClass.isAssignableFrom(o.getClass());
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}
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}
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}
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