package com.dbxml.db.client.xmldb;
/*
* dbXML - Native XML Database
* Copyright (c) 1999-2006 The dbXML Group, L.L.C.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* $Id: XMLResourceImpl.java,v 1.3 2006/02/02 18:53:47 bradford Exp $
*/
import com.dbxml.xml.dom.DOMHelper;
import com.dbxml.xml.dom.TextWriter;
import java.io.StringReader;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.w3c.dom.Node;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import org.xml.sax.XMLReader;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.ErrorCodes;
import org.xmldb.api.base.XMLDBException;
import org.xmldb.api.modules.XMLResource;
import org.xmldb.api.sdk.modules.SetContentHandler;
/**
* XMLResourceImpl
*/
public final class XMLResourceImpl implements XMLResource {
public static final String TYPE = "XMLResource";
private SAXParserFactory spf;
private CollectionImpl parent;
private String docID;
private String id;
private String xml;
public XMLResourceImpl(CollectionImpl parent, String docID, String id, String xml) {
this.parent = parent;
this.docID = docID;
this.id = id;
this.xml = xml;
}
public XMLResourceImpl(CollectionImpl parent) {
this.parent = parent;
}
public String getDocumentId() throws XMLDBException {
return docID;
}
public Collection getParentCollection() throws XMLDBException {
return parent;
}
public Node getContentAsDOM() throws XMLDBException {
try {
return DOMHelper.parseText(xml);
}
catch ( Exception e ) {
throw new XMLDBException(ErrorCodes.INVALID_RESOURCE, e.getMessage());
}
}
public String getId() throws XMLDBException {
return id;
}
public void setContentAsDOM(Node content) throws XMLDBException {
xml = TextWriter.toString(content);
}
public String getResourceType() throws XMLDBException {
return TYPE;
}
private void checkSAXFactory() throws SAXNotRecognizedException, SAXNotSupportedException {
if ( spf == null ) {
try {
spf = SAXParserFactory.newInstance();
spf.setNamespaceAware(true);
spf.setValidating(false);
spf.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
}
catch ( ParserConfigurationException e ) {
throw new SAXNotSupportedException(e.getMessage());
}
}
}
public void setSAXFeature(String name, boolean value) throws SAXNotRecognizedException, SAXNotSupportedException {
checkSAXFactory();
try {
spf.setFeature(name, value);
}
catch ( ParserConfigurationException e ) {
throw new SAXNotRecognizedException(e.getMessage());
}
}
public boolean getSAXFeature(String name) throws SAXNotRecognizedException, SAXNotSupportedException {
checkSAXFactory();
try {
return spf.getFeature(name);
}
catch ( ParserConfigurationException e ) {
throw new SAXNotRecognizedException(e.getMessage());
}
}
public void getContentAsSAX(ContentHandler handler) throws XMLDBException {
if ( xml == null )
throw new XMLDBException(ErrorCodes.INVALID_RESOURCE, "No content has been set");
try {
checkSAXFactory();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
xr.setContentHandler(handler);
InputSource is = new InputSource(new StringReader(xml));
xr.parse(is);
}
catch ( Exception e ) {
throw new XMLDBException(ErrorCodes.UNKNOWN_ERROR, e.getMessage());
}
}
public ContentHandler setContentAsSAX() throws XMLDBException {
return new SetContentHandler(this);
}
public Object getContent() throws XMLDBException {
return xml;
}
public void setContent(Object value) throws XMLDBException {
if ( value instanceof Node )
setContentAsDOM((Node)value);
else if ( value instanceof String )
xml = (String)value;
else if ( value != null )
throw new XMLDBException(ErrorCodes.WRONG_CONTENT_TYPE, "Setting content as '" + value.getClass().getName() + "' is not supported");
else
throw new XMLDBException(ErrorCodes.WRONG_CONTENT_TYPE, "Setting content as null is not supported");
}
}