/*
* 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 javax.xml.XMLConstants;
import javax.xml.namespace.QName;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.bpel.compiler.api.CompilationException;
import org.apache.ode.bpel.compiler.bom.Activity;
import org.apache.ode.bpel.compiler.bom.ForEachActivity;
import org.apache.ode.bpel.compiler.bom.Scope;
import org.apache.ode.bpel.o.OActivity;
import org.apache.ode.bpel.o.OForEach;
import org.apache.ode.bpel.o.OScope;
import org.apache.ode.bpel.o.OXsdTypeVarType;
import org.apache.ode.utils.msg.MessageBundle;
/**
* Generates code for <code><forEach></code> activities.
*/
public class ForEachGenerator extends DefaultActivityGenerator {
private static final Log __log = LogFactory.getLog(AssignGenerator.class);
private static final ForEachGeneratorMessages __cmsgs = MessageBundle.getMessages(ForEachGeneratorMessages.class);
public OActivity newInstance(Activity src) {
return new OForEach(_context.getOProcess(), _context.getCurrent());
}
public void compile(OActivity output, Activity src) {
if (__log.isDebugEnabled()) __log.debug("Compiling ForEach activity.");
OForEach oforEach = (OForEach) output;
ForEachActivity forEach = (ForEachActivity) src;
oforEach.parallel = forEach.isParallel();
oforEach.startCounterValue = _context.compileExpr(forEach.getStartCounter());
oforEach.finalCounterValue = _context.compileExpr(forEach.getFinalCounter());
if (forEach.getCompletionCondition() != null) {
oforEach.completionCondition =
new OForEach.CompletionCondition(_context.getOProcess());
oforEach.completionCondition.successfulBranchesOnly
= forEach.getCompletionCondition().isSuccessfulBranchesOnly();
oforEach.completionCondition.branchCount = _context.compileExpr(forEach.getCompletionCondition());
}
// ForEach 'adds' a counter variable in inner scope
if (__log.isDebugEnabled()) __log.debug("Adding the forEach counter variable to inner scope.");
Scope s = forEach.getChild().getScope();
// Checking if a variable using the same name as our counter is already defined.
// The spec requires a static analysis error to be thrown in that case.
if (s.getVariableDecl(forEach.getCounterName()) != null)
throw new CompilationException(__cmsgs.errForEachAndScopeVariableRedundant(forEach.getCounterName()).setSource(src));
OXsdTypeVarType counterVarType = new OXsdTypeVarType(_context.getOProcess());
counterVarType.xsdType = new QName(XMLConstants.W3C_XML_SCHEMA_NS_URI, "unsignedInt");
OScope.Variable countervar = new OScope.Variable(_context.getOProcess(),counterVarType);
if (__log.isDebugEnabled()) __log.debug("Compiling forEach inner scope.");
oforEach.innerScope = _context.compileSLC(forEach.getChild(), new OScope.Variable[]{countervar});
oforEach.counterVariable = oforEach.innerScope.getLocalVariable(forEach.getCounterName());
}
}