001: /*--
002:
003: Copyright (C) 2002-2005 Adrian Price.
004: All rights reserved.
005:
006: Redistribution and use in source and binary forms, with or without
007: modification, are permitted provided that the following conditions
008: are met:
009:
010: 1. Redistributions of source code must retain the above copyright
011: notice, this list of conditions, and the following disclaimer.
012:
013: 2. Redistributions in binary form must reproduce the above copyright
014: notice, this list of conditions, and the disclaimer that follows
015: these conditions in the documentation and/or other materials
016: provided with the distribution.
017:
018: 3. The names "OBE" and "Open Business Engine" must not be used to
019: endorse or promote products derived from this software without prior
020: written permission. For written permission, please contact
021: adrianprice@sourceforge.net.
022:
023: 4. Products derived from this software may not be called "OBE" or
024: "Open Business Engine", nor may "OBE" or "Open Business Engine"
025: appear in their name, without prior written permission from
026: Adrian Price (adrianprice@users.sourceforge.net).
027:
028: THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
029: WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
030: OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
031: DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
032: INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
033: (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
034: SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
035: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
036: STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
037: IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
038: POSSIBILITY OF SUCH DAMAGE.
039:
040: For more information on OBE, please see
041: <http://obe.sourceforge.net/>.
042:
043: */
044:
045: package org.obe.runtime.evaluator;
046:
047: import org.obe.spi.WorkflowContext;
048: import org.obe.spi.event.ApplicationEvent;
049: import org.obe.spi.model.ActivityInstance;
050: import org.obe.spi.model.ProcessInstance;
051: import org.obe.spi.service.ServiceManager;
052: import org.obe.xpdl.model.activity.Activity;
053: import org.obe.xpdl.model.activity.Tool;
054: import org.obe.xpdl.model.workflow.WorkflowProcess;
055:
056: /**
057: * Exposes workflow context data to expression evaluators.
058: *
059: * @author Adrian Price
060: */
061: public final class EvaluationContext implements WorkflowContext {
062: /**
063: * A special variable that provides access to the workflow context.
064: */
065: public static final String CONTEXT = "ctx";
066:
067: private WorkflowContext _ctx;
068:
069: public EvaluationContext(WorkflowContext ctx) {
070: setContext(ctx);
071: }
072:
073: public void setContext(WorkflowContext ctx) {
074: _ctx = ctx;
075: }
076:
077: public Activity getActivity() {
078: return _ctx.getActivity();
079: }
080:
081: public Tool getTool() {
082: return _ctx.getTool();
083: }
084:
085: public ActivityInstance getActivityInstance() {
086: return _ctx.getActivityInstance();
087: }
088:
089: public ApplicationEvent getEvent() {
090: return _ctx.getEvent();
091: }
092:
093: public ProcessInstance getProcessInstance() {
094: return _ctx.getProcessInstance();
095: }
096:
097: public WorkflowProcess getWorkflow() {
098: return _ctx.getWorkflow();
099: }
100:
101: public ServiceManager getServiceManager() {
102: return _ctx.getServiceManager();
103: }
104: }
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