bpel-compiler/src/main/java/org/apache/ode/bpel/compiler/ExtensionActivtityGenerator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.ode.bpel.compiler;

import org.apache.ode.bpel.compiler.api.CompilationException;
import org.apache.ode.bpel.compiler.bom.Activity;
import org.apache.ode.bpel.compiler.bom.CompositeActivity;
import org.apache.ode.bpel.compiler.bom.ExtensionActivity;
import org.apache.ode.bpel.extension.ExtensionValidator;
import org.apache.ode.bpel.obj.OActivity;
import org.apache.ode.bpel.obj.OExtensionActivity;
import org.apache.ode.utils.DOMUtils;
import org.apache.ode.utils.msg.MessageBundle;
import org.w3c.dom.Element;

/**
 * Generates code for <code>&lt;empty&gt;</code> activities.
 * 
 * @author Tammo van Lessen
 */
public class ExtensionActivtityGenerator extends DefaultActivityGenerator {
	private static final ExtensionActivityGeneratorMessages __cmsgs = MessageBundle
			.getMessages(ExtensionActivityGeneratorMessages.class);

	public void compile(OActivity output, Activity srcx) {
		ExtensionActivity src = (ExtensionActivity) srcx;
		OExtensionActivity oactivity = (OExtensionActivity) output;
		Element child = src.getFirstExtensibilityElementElement();
		try {
			if (child == null) {
				throw new CompilationException(
						__cmsgs.errMissingExtensionActivityElement());
			}
			if (!_context.isExtensionDeclared(child.getNamespaceURI())) {
				throw new CompilationException(__cmsgs
						.errUndeclaredExtensionActivity().setSource(src));
			}
			ExtensionValidator validator = _context
					.getExtensionValidator(DOMUtils.getElementQName(child));
			if (validator != null) {
				validator.validate(_context, src);
			}
			oactivity.setExtensionName(DOMUtils.getElementQName(child));
			oactivity.setNestedElement(DOMUtils.domToString(child));

			compileChildren(oactivity, (ExtensionActivity) src);

		} catch (CompilationException e) {
			_context.recoveredFromError(src, e);
		}
	}

	public OActivity newInstance(Activity src) {
		return new OExtensionActivity(_context.getOProcess(),
				_context.getCurrent());
	}

	protected void compileChildren(OExtensionActivity dest,
			CompositeActivity src) {
		for (Activity child : src.getActivities()) {
			try {
				OActivity compiledChild = _context.compile(child);
				dest.getChildren().add(compiledChild);
			} catch (CompilationException ce) {
				_context.recoveredFromError(child, ce);
			}
		}
	}

}