| /* |
| * 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.runtime; |
| |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.apache.ode.bpel.obj.OActivity; |
| import org.apache.ode.bpel.obj.OFlow; |
| import org.apache.ode.bpel.obj.OLink; |
| import org.apache.ode.bpel.obj.OScope; |
| import org.apache.ode.bpel.runtime.channels.FaultData; |
| import org.apache.ode.bpel.runtime.channels.LinkStatus; |
| import org.apache.ode.bpel.runtime.channels.ParentScope; |
| import org.apache.ode.bpel.runtime.channels.Termination; |
| import org.apache.ode.jacob.ChannelListener; |
| import org.apache.ode.jacob.CompositeProcess; |
| import org.apache.ode.jacob.ProcessUtil; |
| import org.apache.ode.jacob.ReceiveProcess; |
| import org.apache.ode.jacob.Synch; |
| import org.apache.ode.utils.stl.FilterIterator; |
| import org.apache.ode.utils.stl.MemberOfFunction; |
| import org.w3c.dom.Element; |
| |
| class FLOW extends ACTIVITY { |
| private static final long serialVersionUID = 1L; |
| |
| private OFlow _oflow; |
| |
| private Set<ChildInfo> _children = new HashSet<ChildInfo>(); |
| |
| public FLOW(ActivityInfo self, ScopeFrame frame, LinkFrame linkFrame) { |
| super(self,frame, linkFrame); |
| _oflow = (OFlow) self.o; |
| } |
| |
| public void run() { |
| LinkFrame myLinkFrame = new LinkFrame(_linkFrame); |
| for (Iterator<OLink> i = _oflow.getLocalLinks().iterator(); i.hasNext(); ) { |
| OLink link = i.next(); |
| LinkStatus lsc = newChannel(LinkStatus.class); |
| myLinkFrame.links.put(link,new LinkInfo(link,lsc,lsc)); |
| } |
| |
| for (Iterator<OActivity> i = _oflow.getParallelActivities().iterator(); i.hasNext();) { |
| OActivity ochild = i.next(); |
| ChildInfo childInfo = new ChildInfo( |
| new ActivityInfo(genMonotonic(), ochild, |
| newChannel(Termination.class), newChannel(ParentScope.class))); |
| _children.add(childInfo); |
| |
| instance(createChild(childInfo.activity,_scopeFrame, myLinkFrame)); |
| } |
| instance(new ACTIVE()); |
| } |
| |
| private class ACTIVE extends BpelJacobRunnable { |
| private static final long serialVersionUID = -8494641460279049245L; |
| private FaultData _fault; |
| private HashSet<CompensationHandler> _compensations = new HashSet<CompensationHandler>(); |
| |
| public void run() { |
| Iterator<ChildInfo> active = active(); |
| if (active.hasNext()) { |
| CompositeProcess mlSet = ProcessUtil.compose(new ReceiveProcess() { |
| private static final long serialVersionUID = 2554750258974084466L; |
| }.setChannel(_self.self).setReceiver(new Termination() { |
| public void terminate() { |
| for (Iterator<ChildInfo> i = active(); i.hasNext(); ) |
| replication(i.next().activity.self).terminate(); |
| instance(ACTIVE.this); |
| } |
| })); |
| |
| for (;active.hasNext();) { |
| final ChildInfo child = active.next(); |
| mlSet.or(new ReceiveProcess() { |
| private static final long serialVersionUID = -8027205709169238172L; |
| }.setChannel(child.activity.parent).setReceiver(new ParentScope() { |
| public void completed(FaultData faultData, Set<CompensationHandler> compensations) { |
| child.completed = true; |
| _compensations.addAll(compensations); |
| |
| // If we receive a fault, we request termination of all our activities |
| if (faultData != null && _fault == null) { |
| for (Iterator<ChildInfo> i = active(); i.hasNext(); ) |
| replication(i.next().activity.self).terminate(); |
| _fault = faultData; |
| } |
| instance(ACTIVE.this); |
| } |
| |
| public void compensate(OScope scope, Synch ret) { |
| // Flow does not do compensations, forward these to parent. |
| _self.parent.compensate(scope, ret); |
| instance(ACTIVE.this); |
| } |
| |
| public void cancelled() { completed(null, CompensationHandler.emptySet()); } |
| public void failure(String reason, Element data) { completed(null, CompensationHandler.emptySet()); } |
| })); |
| } |
| object(false, mlSet); |
| } else /** No More active children. */ { |
| // NOTE: we do not not have to do DPE here because all the children |
| // have been started, and are therefore expected to set the value of |
| // their outgoing links. |
| _self.parent.completed(_fault, _compensations); |
| } |
| } |
| } |
| |
| public String toString() { |
| return "<T:Act:Flow:" + _oflow.getName() + ">"; |
| } |
| |
| private Iterator<ChildInfo> active() { |
| return new FilterIterator<ChildInfo>(_children.iterator(), new MemberOfFunction<ChildInfo>() { |
| public boolean isMember(ChildInfo childInfo) { |
| return !childInfo.completed; |
| } |
| }); |
| } |
| |
| } |