examples/org.eclipse.epsilon.examples.workflow.transactions/build.xml

<project default="main">
	
	<!-- ANT Taskdefs for ant-contrib -->
	<taskdef resource="net/sf/antcontrib/antcontrib.properties"/>  
	
	<target name="loadModels">
		<epsilon.emf.register file="tree.ecore"/>		
		<epsilon.emf.loadModel name="M" modelfile="tree.model" 
				metamodeluri="Tree" read="false" store="true"/>
	</target>
	
	<target name="Transformation1">
		<epsilon.eol>
			<model ref="M"/>
			
			var t : new Tree;
			t.label = 't1';
			
		</epsilon.eol>
	</target>
	
	<target name="Transformation2">
		<epsilon.eol>
			<model ref="M"/>
			
			var t : new Tree;
			t.label = 't2';
			
		</epsilon.eol>
	</target>

	<target name="Validation1">
		<epsilon.evl>
			<model ref="M"/>
			
			context Tree {
				constraint C1 {
					check : true
				}
			}
			
		</epsilon.evl>
	</target>
	
	<target name="Validation2">
		<epsilon.evl>
			<model ref="M"/>
			
			context Tree {
				constraint C2 {
					check : true -- Switch to false to make validation fail
				}
			}
			
		</epsilon.evl>
	</target>
	
	<target name="Evaluation">
		<epsilon.eol>
			<model ref="M"/>
			
			Tree.all.size().println();
			
		</epsilon.eol>
	</target>
	
	<target name="main" depends="loadModels">
		<runtarget target="Transformation1"/>
		<runtarget target="Validation1"/>		
		
		<trycatch>
			<try>
				<!--Start a transaction on M so that we can roll it back later on.-->
				<epsilon.startTransaction name="Transaction1" models="M"/>
				<runtarget target="Transformation2"/>
				<runtarget target="Validation2"/>
				<!-- No errors in the validation. Commit the transaction.-->
				<epsilon.commitTransaction name="Transaction1"/>
			</try>
			<catch>
				<!--If validation fails, roll back the transaction.-->
				<epsilon.rollbackTransaction name="Transaction1"/>
			</catch>
		</trycatch>
		
		<runtarget target="Evaluation"/>
	</target>
	
</project>