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: XSLTransformServiceImpl.java,v 1.4 2006/02/02 18:53:47 bradford Exp $
*/
import com.dbxml.db.client.CollectionClient;
import com.dbxml.db.client.ResultSetClient;
import com.dbxml.db.common.xslt.XSLTQueryResolver;
import com.dbxml.db.core.query.Query;
import com.dbxml.util.dbXMLException;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.ErrorCodes;
import org.xmldb.api.base.Resource;
import org.xmldb.api.base.XMLDBException;
import org.xmldb.api.modules.XMLResource;
/**
* XSLTransformServiceImpl
*/
public final class XSLTransformServiceImpl extends QueryServiceImpl implements XSLTransformService {
private static final String NAME = "XSLTransformService";
private static final String STYLE = XSLTQueryResolver.STYLE_XSLT;
private static final String VERSION = "1.0";
private Map params = Collections.synchronizedMap(new LinkedHashMap());
private XMLResource templates;
public XSLTransformServiceImpl(CollectionImpl col) {
super(col, STYLE);
}
public String getName() throws XMLDBException {
return NAME;
}
public String getVersion() throws XMLDBException {
return VERSION;
}
public void setTemplates(XMLResource templates) throws XMLDBException {
this.templates = templates;
}
public void setParameter(String name, String value) throws XMLDBException {
params.put(name, value);
}
public String getParameter(String name) throws XMLDBException {
return (String)params.get(name);
}
public void removeParameter(String name) throws XMLDBException {
params.remove(name);
}
public void clearParameters() throws XMLDBException {
params.clear();
}
private String getQuery(String xpath, String id) throws XMLDBException {
try {
StringBuffer sb = new StringBuffer();
sb.append("<dbxml:xslt xmlns:dbxml=\""+Query.NSURI+"\">\n");
sb.append(" <dbxml:source");
if ( xpath != null )
sb.append(" xpath=\"\"");
if ( id != null )
sb.append(" document=\"\"");
sb.append("/>\n");
if ( params.size() > 0 ) {
sb.append(" <dbxml:params>\n");
Iterator iter = params.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry entry = (Map.Entry)iter.next();
String key = (String)entry.getKey();
String value = (String)entry.getValue();
sb.append(" <param name=\""+key+"\" value=\""+value+"\">\n");
}
sb.append(" </dbxml:params>\n");
}
if ( templates != null ) {
Collection parent = templates.getParentCollection();
if ( parent instanceof CollectionImpl ) {
CollectionImpl impl = (CollectionImpl)parent;
CollectionClient cli = impl.getCollectionClient();
String path = cli.getCanonicalName()+"/"+templates.getId();
sb.append(" <dbxml:stylesheet document=\""+path+"\"/>\n");
}
else {
sb.append(" <dbxml:stylesheet>\n");
sb.append((String)templates.getContent());
sb.append(" </dbxml:stylesheet>\n");
}
}
sb.append("</dbxml:xslt>");
return sb.toString();
}
catch ( dbXMLException e ) {
throw new XMLDBException(ErrorCodes.VENDOR_ERROR, e.getMessage());
}
}
private Resource getResource(ResultSetClient rs) throws XMLDBException {
try {
Resource resource = null;
if ( rs.next() ) {
String docID = rs.getResultKey();
String id = Integer.toString(new Object().hashCode());
String xml = rs.getResultAsText();
resource = new XMLResourceImpl(col, docID, id, xml);
}
rs.close();
return resource;
}
catch ( dbXMLException e ) {
throw new XMLDBException(ErrorCodes.VENDOR_ERROR, e.getMessage());
}
}
public Resource transform(String xpath) throws XMLDBException {
return getResource(performQuery(getQuery(xpath, null)));
}
public Resource transformResource(String id) throws XMLDBException {
return getResource(performQueryResource(getQuery(null, id), id));
}
}