/* $RCSfile$
* $Author$
* $Date$
* $Revision$
*
* Copyright (C) 2002-2007 The Chemistry Development Kit (CDK) project
*
* Contact: cdk-devel@lists.sf.net
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.openscience.cdk.dict;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.DefaultHandler;
/**
* Class for unmarshalling a dictionary schema file.
*
* @cdk.module dict
*/
public class DictionaryHandler extends DefaultHandler {
private boolean inEntry = false;
private boolean inMetadataList = false;
Entry entry;
/** Used to store all chars between two tags */
private String currentChars;
Dictionary dict;
public DictionaryHandler() {}
public void doctypeDecl(String name, String publicId, String systemId)
throws Exception {
}
public void startDocument() {
dict = new Dictionary();
}
public void endElement(String uri, String local, String raw) {
if ("entry".equals(local) && !"bibtex:entry".equals(raw) && inEntry) {
dict.addEntry(entry);
inEntry = false;
} else if ("metadataList".equals(local) && inMetadataList) {
inMetadataList = false;
}
}
public void startElement(String uri, String local,
String raw, Attributes atts) {
currentChars = "";
if ("entry".equals(local) && !"bibtex:entry".equals(raw) && !inEntry) {
inEntry = true;
entry = new Entry();
for (int i = 0; i < atts.getLength(); i++) {
if (atts.getQName(i).equals("id")) {
entry.setID(atts.getValue(i));
} else if (atts.getQName(i).equals("term")) {
entry.setLabel(atts.getValue(i));
}
}
}
if ("metadataList".equals(local) && !inMetadataList) {
inMetadataList = true;
}
// if we're in a metadataList then look at individual
// metadata nodes and check for any whose content refers
// to QSAR metadata and save that. Currently it does'nt
// differentiate between descriptorType or descriptorClass.
// Do we need to differentiate?
//
// RG: I think so and so I save a combination of the dictRef attribute
// and the content attribute
if ("metadata".equals(local) && inMetadataList) {
for (int i = 0; i < atts.getLength()-1; i += 2) {
String dictRefValue = "";
if (atts.getQName(i).equals("dictRef")) {
dictRefValue = atts.getValue(i);
}
if (atts.getQName(i+1).equals("content")) {
String content = atts.getValue(i+1);
if (content.indexOf("qsar-descriptors-metadata:") == 0) {
entry.setDescriptorMetadata(dictRefValue+"/"+content);
}
}
}
}
}
public void characters(char character[], int start, int length) {
currentChars += new String(character, start, length);
}
public Dictionary getDictionary() {
return dict;
}
}