package org.drools.xml.processes;
import java.util.HashSet;
import org.drools.definition.process.Process;
import org.drools.process.core.ContextContainer;
import org.drools.process.core.context.exception.ActionExceptionHandler;
import org.drools.process.core.context.exception.ExceptionHandler;
import org.drools.process.core.context.exception.ExceptionScope;
import org.drools.workflow.core.DroolsAction;
import org.drools.xml.BaseAbstractHandler;
import org.drools.xml.ExtensibleXmlParser;
import org.drools.xml.Handler;
import org.w3c.dom.Element;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class ExceptionHandlerHandler extends BaseAbstractHandler implements Handler {
public ExceptionHandlerHandler() {
if ((this.validParents == null) && (this.validPeers == null)) {
this.validParents = new HashSet<Class<?>>();
this.validParents.add(Process.class);
this.validPeers = new HashSet<Class<?>>();
this.validPeers.add(null);
this.allowNesting = false;
}
}
public Object start(final String uri, final String localName,
final Attributes attrs, final ExtensibleXmlParser parser)
throws SAXException {
parser.startElementBuilder(localName, attrs);
return null;
}
public Object end(final String uri, final String localName,
final ExtensibleXmlParser parser) throws SAXException {
final Element element = parser.endElementBuilder();
ContextContainer contextContainer = (ContextContainer) parser.getParent();
final String type = element.getAttribute("type");
emptyAttributeCheck(localName, "type", type, parser);
final String faultName = element.getAttribute("faultName");
emptyAttributeCheck(localName, "faultName", type, parser);
final String faultVariable = element.getAttribute("faultVariable");
ExceptionHandler exceptionHandler = null;
if ("action".equals(type)) {
exceptionHandler = new ActionExceptionHandler();
org.w3c.dom.Node xmlNode = element.getFirstChild();
if (xmlNode instanceof Element) {
Element actionXml = (Element) xmlNode;
DroolsAction action = ActionNodeHandler.extractAction(actionXml);
((ActionExceptionHandler) exceptionHandler).setAction(action);
}
} else {
throw new SAXParseException("Unknown exception handler type " + type, parser.getLocator());
}
if (faultVariable != null && faultVariable.length() > 0) {
exceptionHandler.setFaultVariable(faultVariable);
}
ExceptionScope exceptionScope = (ExceptionScope)
contextContainer.getDefaultContext(ExceptionScope.EXCEPTION_SCOPE);
if (exceptionScope == null) {
exceptionScope = new ExceptionScope();
contextContainer.addContext(exceptionScope);
contextContainer.setDefaultContext(exceptionScope);
}
exceptionScope.setExceptionHandler(faultName, exceptionHandler);
return null;
}
public Class<?> generateNodeFor() {
return null;
}
}