cziegeler 2003/01/14 01:23:12
Modified: xmlutil/src/java/org/apache/excalibur/xml/sax
JaxpParser.java
Added: xmlutil/src/java/org/apache/excalibur/xml/dom Parser.java
Log:
Adding a dom parser
Revision Changes Path
1.1
jakarta-avalon-excalibur/xmlutil/src/java/org/apache/excalibur/xml/dom/Parser.java
Index: Parser.java
===================================================================
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.excalibur.xml.dom;
import java.io.IOException;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* The parser can be used to parse any XML document given
* by a [EMAIL PROTECTED] InputSource} object.
* It can create a DOM from the parsed document.
*
* @author <a href="mailto:[EMAIL PROTECTED]">Carsten Ziegeler</a>
* @version CVS $Revision: 1.1 $ $Date: 2003/01/14 09:23:11 $
*/
public interface Parser
{
String ROLE = Parser.class.getName();
/**
* Parse the [EMAIL PROTECTED] InputSource} and create
* a DOM out of it.
*/
Document parseDocument( InputSource in )
throws SAXException, IOException;
/**
* Return a new [EMAIL PROTECTED] Document}.
*/
Document createDocument() throws SAXException;
}
1.7 +97 -4
jakarta-avalon-excalibur/xmlutil/src/java/org/apache/excalibur/xml/sax/JaxpParser.java
Index: JaxpParser.java
===================================================================
RCS file:
/home/cvs/jakarta-avalon-excalibur/xmlutil/src/java/org/apache/excalibur/xml/sax/JaxpParser.java,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- JaxpParser.java 14 Jan 2003 08:52:48 -0000 1.6
+++ JaxpParser.java 14 Jan 2003 09:23:12 -0000 1.7
@@ -8,10 +8,13 @@
package org.apache.excalibur.xml.sax;
import java.io.IOException;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import org.apache.avalon.excalibur.pool.Poolable;
-import org.apache.avalon.excalibur.xml.EntityResolver;
+import org.apache.excalibur.xml.EntityResolver;
import org.apache.avalon.framework.component.Component;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.parameters.ParameterException;
@@ -20,6 +23,7 @@
import org.apache.avalon.framework.service.ServiceException;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.service.Serviceable;
+import org.w3c.dom.Document;
import org.xml.sax.ContentHandler;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
@@ -69,7 +73,8 @@
*/
public final class JaxpParser
extends AbstractLogEnabled
- implements Parser, Poolable, Component, Parameterizable, Serviceable,
ErrorHandler
+ implements Parser, org.apache.excalibur.xml.dom.Parser,
+ Poolable, Component, Parameterizable, Serviceable,
ErrorHandler
{
/** the SAX Parser factory */
private SAXParserFactory m_factory;
@@ -93,6 +98,13 @@
/** do we stop on recoverable errors ? */
private boolean m_stopOnRecoverableError;
+ /** the Document Builder factory */
+ private DocumentBuilderFactory m_docFactory;
+
+ /** The DOM builder. It is created lazily by [EMAIL PROTECTED]
#setupDocumentBuilder()}
+ and cleared if a parsing error occurs. */
+ private DocumentBuilder m_docBuilder;
+
/**
* Get the Entity Resolver from the component m_manager
*
@@ -143,6 +155,28 @@
m_factory.setNamespaceAware( true );
m_factory.setValidating( validate );
+ // Get the DocumentFactory
+ final String documentBuilderFactoryName = params.getParameter(
"document-builder-factory",
+
"javax.xml.parsers.DocumentBuilderFactory" );
+ if( "javax.xml.parsers.DocumentBuilderFactory".equals(
documentBuilderFactoryName ) )
+ {
+ m_docFactory = DocumentBuilderFactory.newInstance();
+ }
+ else
+ {
+ try
+ {
+ final Class factoryClass = loadClass(
documentBuilderFactoryName );
+ m_docFactory =
(DocumentBuilderFactory)factoryClass.newInstance();
+ }
+ catch( Exception e )
+ {
+ throw new ParameterException( "Cannot load
DocumentBuilderFactory class " + documentBuilderFactoryName, e );
+ }
+ }
+ m_docFactory.setNamespaceAware( true );
+ m_docFactory.setValidating( validate );
+
if( getLogger().isDebugEnabled() )
{
getLogger().debug( "JaxpParser: validating: " + validate +
@@ -150,7 +184,8 @@
", reuse parser: " + m_reuseParsers +
", stop on warning: " + m_stopOnWarning +
", stop on recoverable-error: " +
m_stopOnRecoverableError +
- ", saxParserFactory: " + saxParserFactoryName
);
+ ", saxParserFactory: " + saxParserFactoryName
+
+ ", documentBuilderFactory: " +
documentBuilderFactoryName );
}
}
@@ -271,6 +306,64 @@
}
}
}
+ }
+
+ /**
+ * Parses a new Document object from the given InputSource.
+ */
+ public Document parseDocument( final InputSource input )
+ throws SAXException, IOException
+ {
+ setupDocumentBuilder();
+
+ // Ensure we will use a fresh new parser at next parse in case of
failure
+ DocumentBuilder tmpBuilder = m_docBuilder;
+ m_docBuilder = null;
+
+ if( null != m_resolver )
+ {
+ tmpBuilder.setEntityResolver( m_resolver );
+ }
+
+ Document result = tmpBuilder.parse( input );
+
+ // Here, parsing was successful : restore builder
+ if( m_reuseParsers )
+ {
+ m_docBuilder = tmpBuilder;
+ }
+
+ return result;
+ }
+
+ /**
+ * Creates a new [EMAIL PROTECTED] DocumentBuilder} if needed.
+ */
+ private void setupDocumentBuilder()
+ throws SAXException
+ {
+ if( null == m_docBuilder )
+ {
+ try
+ {
+ m_docBuilder = m_docFactory.newDocumentBuilder();
+ }
+ catch( final ParserConfigurationException pce )
+ {
+ final String message = "Could not create DocumentBuilder";
+ throw new SAXException( message, pce );
+ }
+ }
+ }
+
+ /**
+ * Return a new [EMAIL PROTECTED] Document}.
+ */
+ public Document createDocument()
+ throws SAXException
+ {
+ setupDocumentBuilder();
+ return m_docBuilder.newDocument();
}
/**
--
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