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package oracle.toplink.essentials.platform.xml.jaxp;
import java.io.File;
import java.io.InputStream;
import java.io.IOException;
import java.io.Reader;
import java.net.URL;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import org.w3c.dom.Document;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import oracle.toplink.essentials.platform.xml.XMLParser;
import oracle.toplink.essentials.platform.xml.XMLPlatformException;
public class JAXPParser implements XMLParser {
private static final String SCHEMA_LANGUAGE = "http://java.sun.com/xml/jaxp/properties/schemaLanguage";
private static final String XML_SCHEMA = "http://www.w3.org/2001/XMLSchema";
private static final String JAXP_SCHEMA_SOURCE = "http://java.sun.com/xml/jaxp/properties/schemaSource";
private DocumentBuilderFactory documentBuilderFactory;
private EntityResolver entityResolver;
private ErrorHandler errorHandler;
public JAXPParser() {
super();
documentBuilderFactory = DocumentBuilderFactory.newInstance();
setNamespaceAware(true);
setWhitespacePreserving(false);
}
public void setNamespaceAware(boolean isNamespaceAware) {
documentBuilderFactory.setNamespaceAware(isNamespaceAware);
}
public void setWhitespacePreserving(boolean isWhitespacePreserving) {
documentBuilderFactory.setIgnoringElementContentWhitespace(!isWhitespacePreserving);
}
public int getValidationMode() {
if (!documentBuilderFactory.isValidating()) {
return XMLParser.NONVALIDATING;
}
try {
if (null == documentBuilderFactory.getAttribute(SCHEMA_LANGUAGE)) {
return XMLParser.DTD_VALIDATION;
}
} catch (IllegalArgumentException e) {
return XMLParser.DTD_VALIDATION;
}
return XMLParser.SCHEMA_VALIDATION;
}
public void setValidationMode(int validationMode) {
switch (validationMode) {
case XMLParser.NONVALIDATING: {
documentBuilderFactory.setValidating(false);
// documentBuilderFactory.setAttribute(SCHEMA_LANGUAGE, null);
return;
}
case XMLParser.DTD_VALIDATION: {
documentBuilderFactory.setValidating(true);
// documentBuilderFactory.setAttribute(SCHEMA_LANGUAGE, null);
return;
}
case XMLParser.SCHEMA_VALIDATION: {
try {
documentBuilderFactory.setAttribute(SCHEMA_LANGUAGE, XML_SCHEMA);
documentBuilderFactory.setValidating(true);
} catch (IllegalArgumentException e) {
// This parser does not support XML Schema validation so leave it as
// a non-validating parser.
}
return;
}
}
}
public EntityResolver getEntityResolver() {
return entityResolver;
}
public void setEntityResolver(EntityResolver entityResolver) {
this.entityResolver = entityResolver;
}
public ErrorHandler getErrorHandler() {
return errorHandler;
}
public void setErrorHandler(ErrorHandler errorHandler) {
this.errorHandler = errorHandler;
}
public void setXMLSchema(URL url) throws XMLPlatformException {
if (null == url) {
return;
}
try {
documentBuilderFactory.setAttribute(SCHEMA_LANGUAGE, XML_SCHEMA);
documentBuilderFactory.setAttribute(JAXP_SCHEMA_SOURCE, url.toString());
} catch (IllegalArgumentException e) {
// The attribute isn't supported so do nothing
} catch (Exception e) {
XMLPlatformException.xmlPlatformErrorResolvingXMLSchema(url, e);
}
}
public void setXMLSchemas(Object[] schemas) throws XMLPlatformException {
if ((null == schemas) || (schemas.length == 0)) {
return;
}
try {
documentBuilderFactory.setAttribute(SCHEMA_LANGUAGE, XML_SCHEMA);
documentBuilderFactory.setAttribute(JAXP_SCHEMA_SOURCE, schemas);
} catch (IllegalArgumentException e) {
// The attribute isn't supported so do nothing
} catch (Exception e) {
XMLPlatformException.xmlPlatformErrorResolvingXMLSchemas(schemas, e);
}
}
public Document parse(InputSource inputSource) throws XMLPlatformException {
try {
return getDocumentBuilder().parse(inputSource);
} catch (SAXException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
} catch (IOException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
}
}
public Document parse(File file) throws XMLPlatformException {
try {
return getDocumentBuilder().parse(file);
} catch (SAXParseException e) {
throw XMLPlatformException.xmlPlatformSAXParseException(e);
} catch (SAXException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
} catch (IOException e) {
throw XMLPlatformException.xmlPlatformFileNotFoundException(file, e);
}
}
public Document parse(InputStream inputStream) throws XMLPlatformException {
try {
return getDocumentBuilder().parse(inputStream);
} catch (SAXParseException e) {
throw XMLPlatformException.xmlPlatformSAXParseException(e);
} catch (SAXException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
} catch (IOException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
}
}
public Document parse(Reader reader) throws XMLPlatformException {
InputSource inputSource = new InputSource(reader);
return parse(inputSource);
}
public Document parse(Source source) throws XMLPlatformException {
try {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMResult domResult = new DOMResult();
transformer.transform(source, domResult);
return (Document)domResult.getNode();
} catch (TransformerException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
}
}
public Document parse(URL url) throws XMLPlatformException {
try {
InputStream inputStream = url.openStream();
return parse(inputStream);
} catch (IOException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
}
}
private DocumentBuilder getDocumentBuilder() {
try {
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
documentBuilder.setEntityResolver(entityResolver);
documentBuilder.setErrorHandler(errorHandler);
return documentBuilder;
} catch (ParserConfigurationException e) {
throw XMLPlatformException.xmlPlatformParseException(e);
}
}
}
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