[overlord-issues] [JBoss JIRA] (RTGOV-644) Enable MVELExpressionEvaluator to evaluate more complex scripts (with Variables)

Enable MVELExpressionEvaluator to evaluate more complex scripts (with Variables) -------------------------------------------------------------------------------- Key: RTGOV-644 URL: https://issues.jboss.org/browse/RTGOV-644 Project: RTGov (Run Time Governance) Issue Type: Feature Request Components: Information Processor Affects Versions: 1.0.0.M1 Reporter: ivan mckinley Assignee: Gary Brown Fix For: 2.1.0.Beta2 if a user wishes to execute more complex mvel scripts with variables during information processing then MVEL fails with exception, {1}. The following test case,2, demonstrates this behaviour in action. Recommendation is to update line 44 https://github.com/Governance/rtgov/blob/master/modules/activity-manageme... Object result=MVEL.executeExpression(_compiledExpression, information, new HashMap()); {1}Exception activity event: org.mvel2.ScriptRuntimeException: cannot assign variables; no variable resolver factory available. at org.mvel2.integration.impl.ImmutableDefaultFactory.throwError(ImmutableDefaultFactory.java:32) at org.mvel2.integration.impl.ImmutableDefaultFactory.createVariable(ImmutableDefaultFactory.java:36) at org.mvel2.integration.impl.ClassImportResolverFactory.createVariable(ClassImportResolverFactory.java:61) at org.mvel2.ast.TypedVarNode.getReducedValueAccelerated(TypedVarNode.java:70) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:86) at org.mvel2.compiler.CompiledExpression.getDirectValue(CompiledExpression.java:123) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:119) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:113) at org.mvel2.MVEL.executeExpression(MVEL.java:954) at org.overlord.rtgov.activity.processor.mvel.MVELExpressionEvaluator.evaluate(MVELExpressionEvaluator.java:44) at org.overlord.rtgov.activity.processor.TypeProcessor$PropertyEvaluator.process(TypeProcessor.java:310) at org.overlord.rtgov.activity.processor.TypeProcessor.process(TypeProcessor.java:166) at org.overlord.rtgov.activity.processor.InformationProcessor.process(InformationProcessor.java:137) at org.overlord.rtgov.activity.processor.AbstractInformationProcessorManager.process(AbstractInformationProcessorManager.ja {2} Test Case @Test public void testTransformDOM2() { org.w3c.dom.Document doc=null; try { doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument(); org.w3c.dom.Element elem=doc.createElement("test"); doc.appendChild(elem); elem.appendChild(doc.createTextNode("This is a test")); } catch (Exception e) { fail("Failed to build DOM: "+e); } String expression = "import javax.xml.transform.TransformerFactory; import javax.xml.transform.Transformer; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import java.io.ByteArrayOutputStream; ByteArrayOutputStream out = new ByteArrayOutputStream(); DOMSource source = new DOMSource(this); StreamResult result = new StreamResult(out); TransformerFactory transFactory = TransformerFactory.newInstance(); Transformer transformer = transFactory.newTransformer(); transformer.transform(source, result); out.close(); return new String(out.toByteArray());"; Object _compiledExpression=null; _compiledExpression = MVEL.compileExpression(expression); Object result=MVEL.executeExpression(_compiledExpression, doc); if (result == null) { fail("Failed to parse"); } System.out.println(result);