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package com.sun.tools.ws.wsdl.parser;
import com.sun.istack.SAXParseException2;
import com.sun.tools.ws.resources.WsdlMessages;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.XMLFilterImpl;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
/**
* XMLFilter that finds references to other schema files from
* SAX events.
*
* This implementation is a base implementation for typical case
* where we just need to look for a particular attribute which
* contains an URL to another schema file.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
* Vivek Pandey
*/
public abstract class AbstractReferenceFinderImpl extends XMLFilterImpl {
protected final DOMForest parent;
protected AbstractReferenceFinderImpl( DOMForest _parent ) {
this.parent = _parent;
}
/**
* IF the given element contains a reference to an external resource,
* return its URL.
*
* @param nsURI
* Namespace URI of the current element
* @param localName
* Local name of the current element
* @return
* It's OK to return a relative URL.
*/
protected abstract String findExternalResource( String nsURI, String localName, Attributes atts);
public void startElement(String namespaceURI, String localName, String qName, Attributes atts)
throws SAXException {
super.startElement(namespaceURI, localName, qName, atts);
String relativeRef = findExternalResource(namespaceURI,localName,atts);
if(relativeRef==null) return; // non found
try {
// absolutize URL.
String ref = new URI(locator.getSystemId()).resolve(new URI(relativeRef)).toString();
// then parse this schema as well,
// but don't mark this document as a root.
parent.parse(ref,false);
} catch( URISyntaxException e ) {
SAXParseException spe = new SAXParseException2(
WsdlMessages.ABSTRACT_REFERENCE_FINDER_IMPL_UNABLE_TO_PARSE(relativeRef,e.getMessage()),
locator, e );
fatalError(spe);
throw spe;
} catch( IOException e ) {
SAXParseException spe = new SAXParseException2(
WsdlMessages.ABSTRACT_REFERENCE_FINDER_IMPL_UNABLE_TO_PARSE(relativeRef,e.getMessage()),
locator, e );
fatalError(spe);
throw spe;
}
}
private Locator locator;
public void setDocumentLocator(Locator locator) {
super.setDocumentLocator(locator);
this.locator = locator;
}
}