package org.objectweb.celtix.tools.common.dom;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import org.objectweb.celtix.common.logging.LogUtils;
/**
* (not thread safe)
*
*/
public class ExtendedDocumentBuilder {
private static final Logger LOG = LogUtils.getL7dLogger(ExtendedDocumentBuilder.class);
private final DocumentBuilderFactory parserFactory;
private DocumentBuilder parser;
private SchemaFactory schemaFactory;
private Schema schema;
public ExtendedDocumentBuilder() {
parserFactory = DocumentBuilderFactory.newInstance();
parserFactory.setNamespaceAware(true);
}
private InputStream getSchemaLocation() {
String toolspec = "/org/objectweb/celtix/tools/common/toolspec/tool-specification.xsd";
return getClass().getResourceAsStream(toolspec);
}
public void setValidating(boolean validate) {
if (validate) {
this.schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
try {
this.schema = schemaFactory.newSchema(new StreamSource(getSchemaLocation()));
} catch (org.xml.sax.SAXException e) {
LOG.log(Level.SEVERE, "SCHEMA_FACTORY_EXCEPTION_MSG");
}
this.parserFactory.setSchema(this.schema);
}
}
private DocumentBuilder getParser() {
if (parser == null) {
try {
parser = parserFactory.newDocumentBuilder();
} catch (javax.xml.parsers.ParserConfigurationException e) {
LOG.log(Level.SEVERE, "NEW_DOCUMENT_BUILDER_EXCEPTION_MSG");
}
}
return parser;
}
public Document parse(InputStream in) throws SAXException, IOException {
if (in == null && LOG.isLoggable(Level.FINE)) {
LOG.fine("ExtendedDocumentBuilder trying to parse a null inputstream");
}
return getParser().parse(in);
}
}