geirm 01/12/18 13:15:18 Added: src/java/org/apache/tools/dvsl/dom4j Dom4jNodeImpl.java Log: implementation of the Node interface for dom4j (thanks for all the help James) Revision Changes Path 1.1 jakarta-velocity-dvsl/src/java/org/apache/tools/dvsl/dom4j/Dom4jNodeImpl.java Index: Dom4jNodeImpl.java =================================================================== /* * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. 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For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ package org.apache.tools.dvsl.dom4j; import java.io.StringWriter; import java.io.Writer; import java.util.List; import java.util.ArrayList; import java.util.Map; import java.util.HashMap; import java.util.Iterator; import org.dom4j.Node; import org.dom4j.Element; import org.dom4j.Document; import org.dom4j.Text; import org.dom4j.Attribute; import org.dom4j.Comment; import org.dom4j.CDATA; import org.dom4j.Branch; import org.dom4j.DocumentHelper; import org.dom4j.XPath; import org.dom4j.io.XMLWriter; import org.apache.tools.dvsl.DVSLNode; /** * wrapper class for dom4j nodes to implement the * DVSLNode interface for template use * * @author <a href="mailto:[EMAIL PROTECTED]";>Geir Magnusson Jr.</a> */ public class Dom4jNodeImpl implements DVSLNode { protected Node element = null; protected Map attributes = null; /** * this is a bit yecchy - need to revamp */ public Dom4jNodeImpl( Element e ) { element = e; } public Dom4jNodeImpl( Document e ) { element = e; } public Dom4jNodeImpl( Text e ) { element = e; } public Dom4jNodeImpl( Attribute e ) { element = e; } public Dom4jNodeImpl( Comment e ) { element = e; } public Dom4jNodeImpl( CDATA e ) { element = e; } private Dom4jNodeImpl() { } /** * returns the name of the node */ public String name() { return element.getName(); } /** * returns a specificed attributeattribute */ public String attribute( String attribute ) { if ( element instanceof Element ) return ( (Element) element).attributeValue( attribute ); return null; } /** * returns a list of nodes that satisfy * the xpath */ public List selectNodes( String xpath ) { List l = element.selectNodes( xpath ); List list = new ArrayList(); for( int i = 0; i < l.size(); i++) { Node n = (Node) l.get( i ); if ( n != null ) { list.add( makeDVSLNode( n ) ); } } return list; } public DVSLNode selectSingleNode( String xpath ) { org.dom4j.Node n = element.selectSingleNode( xpath ); return makeDVSLNode( n ); } public DVSLNode get( String xpath ) { return selectSingleNode( xpath ); } public String value() { return element.getText(); } public String toString() { return value(); } public List children() { List list = new ArrayList(); if ( element.getNodeType() == Node.ELEMENT_NODE ) { List nodes = ( (Element) element).content(); for( int i = 0; i < nodes.size(); i++) list.add( makeDVSLNode( (Node) nodes.get(i)) ); } return list; } /** * assumes a list of DVSLNodes */ public String copy( List nodes ) { if ( nodes == null) return ""; StringWriter sw = new StringWriter(); for( int i = 0; i < nodes.size(); i++) { DVSLNode dn = (DVSLNode) nodes.get(i); copy( (Node) dn.getNodeImpl(), sw ); } return sw.toString(); } public String copy() { StringWriter sw = new StringWriter(); copy(element, sw ); return sw.toString(); } private void copy( Node node, Writer writer ) { XMLWriter xw = new XMLWriter( writer ); try { xw.write( node ); } catch( Exception ee ) { } finally { try { xw.flush(); } catch( Exception eee) {} } } public String render() { try { StringWriter sw = new StringWriter(); element.write(sw); return sw.toString(); } catch(Exception e ) { } return ""; } public String attrib( String name ) { if ( element instanceof Element ) { Attribute attrib = ( (Element) element).attribute( name ); if( attrib != null) return attrib.getValue(); } return null; } public Object getNodeImpl() { return element; } public Map getAttribMap() { /* * $$$ GMJ sync issue? yes. Do I care? */ if (attributes == null) attributes = new HashMap(); /* * only Elements have attributes */ if ( element instanceof Element ) { Iterator it = ( (Element) element).attributeIterator(); while(it.hasNext()) { Attribute at = (Attribute) it.next(); attributes.put( at.getName(), at.getValue() ); } } return attributes; } /** * will recast all of this later */ private DVSLNode makeDVSLNode( Node n ) { if ( n == null) return null; short type = n.getNodeType(); if ( type == Node.ELEMENT_NODE ) { return new Dom4jNodeImpl( (Element) n ); } else if( type == Node.TEXT_NODE ) { return new Dom4jNodeImpl( (Text) n ); } else if ( type == Node.ATTRIBUTE_NODE ) { return new Dom4jNodeImpl( (Attribute) n ); } else if ( type == Node.COMMENT_NODE ) { return new Dom4jNodeImpl( (Comment) n ); } else if ( type == Node.CDATA_SECTION_NODE ) { return new Dom4jNodeImpl( (CDATA) n ); } return null; } }
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