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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) 2000-2002 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 "The Jakarta Project", "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; |
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import org.apache.tools.ant.helper.*; |
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import java.util.Enumeration; |
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import java.util.Locale; |
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import java.util.Vector; |
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import java.util.Hashtable; |
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import org.xml.sax.AttributeList; |
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import org.xml.sax.Attributes; |
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import org.xml.sax.helpers.AttributeListImpl; |
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import org.xml.sax.helpers.AttributesImpl; |
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/** |
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* Deals with properties - substitution, dynamic properties, etc. |
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* |
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* Important: the static methods from ProjectHelper belong here. They should |
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* be changed to wrap this. |
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* |
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* Also the property store ( Hashtable ) from Project and all property manipulation |
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* logic should be moved here ( and delegated to interceptors ). |
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* |
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* @author Costin Manolache |
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*/ |
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public class PropertyHelper2 { |
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Project project; |
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Vector propertyInterceptors=new Vector(); |
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protected PropertyHelper2() { |
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} |
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public void setProject(Project p ) { |
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this.project=p; |
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} |
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/** Factory method to create a property processor. |
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* Right now returns the singleton instance of PropertyHelper, |
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* in future it may use discovery of config to return a |
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* customized version, for integration in other apps. |
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*/ |
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public static PropertyHelper2 getPropertyHelper(Project project) { |
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PropertyHelper2 ph=(PropertyHelper2)project.getReference( "ant.PropertyHelper2" ); |
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if( ph!=null ) return ph; |
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ph=new PropertyHelper2(); |
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ph.setProject( project ); |
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project.addReference( "ant.PropertyHelper2",ph ); |
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return ph; |
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} |
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public void addPropertyInterceptor( PropertyInterceptor pi ) { |
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propertyInterceptors.addElement( pi ); |
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} |
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/** Process an value, doing the replacements. |
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*/ |
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public String replaceProperties( String value ) { |
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if (value == null) { |
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return null; |
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} |
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Vector fragments = new Vector(); |
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Vector propertyRefs = new Vector(); |
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// XXX Move the static method here - if this is accepted in the main |
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// branch. |
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ProjectHelper.parsePropertyString(value, fragments, propertyRefs); |
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StringBuffer sb = new StringBuffer(); |
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Enumeration i = fragments.elements(); |
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Enumeration j = propertyRefs.elements(); |
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while (i.hasMoreElements()) { |
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String fragment = (String) i.nextElement(); |
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if (fragment == null) { |
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String propertyName = (String) j.nextElement(); |
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Object repl=processDynamic( project, propertyName); |
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if( repl==null) { |
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// default to the static property. |
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repl=project.getProperty( propertyName ); |
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} |
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if (repl==null ) { |
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project.log("Property ${" + propertyName |
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+ "} has not been set", Project.MSG_VERBOSE); |
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fragment="${" + propertyName + "}"; |
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} else { |
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fragment = repl.toString(); |
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} |
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} |
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sb.append(fragment); |
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} |
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return sb.toString(); |
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} |
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/** Use the reference table to generate values for ${} substitution. |
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* To preserve backward compat ( as much as possible ) we'll only process |
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* ids with a 'namespace-like' syntax. |
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* |
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* Currently we support: |
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* dom:idName:/xpath/like/syntax - the referenced node must be a DOM, we'll use |
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* XPath to extract a node. ( a simplified syntax is handled |
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* directly, XXX used for 'real' xpaths ). |
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* toString:idName - we use toString on the referenced object |
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* bean:idName.propertyName - we get the idName and call the getter for the property. |
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*/ |
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Object processDynamic( Project project, String name ) { |
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for(int i=0; i<propertyInterceptors.size(); i++ ) { |
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PropertyInterceptor pi=(PropertyInterceptor)propertyInterceptors.elementAt( i ); |
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Object o=pi.getProperty( project, null, name ); |
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if( o!=null ) |
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return o; |
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} |
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// experimental - will be removed. |
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if( name.startsWith( "toString:" )) { |
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name=name.substring( "toString:".length()); |
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Object v=project.getReference( name ); |
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if( v==null ) return null; |
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return v.toString(); |
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} |
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return null; |
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} |
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/** Configure a component using SAX2 attributes. |
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*/ |
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public void configure( Object target, Attributes attrs, Project project ) |
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throws BuildException |
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{ |
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if (target instanceof TaskAdapter) { |
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target = ((TaskAdapter) target).getProxy(); |
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} |
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IntrospectionHelper ih = |
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IntrospectionHelper.getHelper(target.getClass()); |
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// Why ??? |
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project.addBuildListener(ih); |
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for (int i = 0; i < attrs.getLength(); i++) { |
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String attValue=attrs.getValue(i); |
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// XXX ADD SPECIAL CASE FOR ${property} - don't convert to string |
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// and support ARRAYS. |
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// reflect these into the target |
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String value = replaceProperties(attValue); |
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try { |
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ih.setAttribute(project, target, |
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attrs.getQName(i).toLowerCase(Locale.US), value); |
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} catch (BuildException be) { |
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// id attribute must be set externally |
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if (!attrs.getQName(i).equals("id")) { |
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throw be; |
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} |
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} |
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} |
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} |
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} |
Costin Manolache