New subject: Deserialization Error from Designer when Process Opened in Gunvor

Wednesday, 21 July 2010

Hi guys,

I have an issue which involves smooks, drools and mvel.

Quick explanation, the unit test is just a smooks run. Nothing complicated. The test
passes happily. It contains an expression that involves an MVEL "IF" statement.

Now if I add a drools startup (I'm not using drools in the test, I'm just
initialising it), the unit test now fails on the "IF" statement. The exception
received is:

org.milyn.cdr.SmooksConfigurationException: Error invoking @Initialize method
'initialize' on class 'org.milyn.javabean.BeanInstancePopulator'.
	at org.milyn.cdr.annotation.Configurator.invoke(Configurator.java:457)
	at org.milyn.cdr.annotation.Configurator.initialise(Configurator.java:439)
	at org.milyn.cdr.annotation.Configurator.configure(Configurator.java:91)
	at org.milyn.cdr.annotation.Configurator.configure(Configurator.java:66)
	at
org.milyn.delivery.JavaContentHandlerFactory.create(JavaContentHandlerFactory.java:63)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder$ContentHandlerExtractionStrategy.addCDU(ContentDeliveryConfigBuilder.java:623)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder$ContentHandlerExtractionStrategy.applyCDUStrategy(ContentDeliveryConfigBuilder.java:548)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder$ContentHandlerExtractionStrategy.applyStrategy(ContentDeliveryConfigBuilder.java:536)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder$SmooksResourceConfigurationTableIterator.iterate(ContentDeliveryConfigBuilder.java:711)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder$SmooksResourceConfigurationTableIterator.access$300(ContentDeliveryConfigBuilder.java:690)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder.extractContentHandlers(ContentDeliveryConfigBuilder.java:484)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder.load(ContentDeliveryConfigBuilder.java:349)
	at
org.milyn.delivery.ContentDeliveryConfigBuilder.getConfig(ContentDeliveryConfigBuilder.java:146)
	at
org.milyn.container.standalone.StandaloneExecutionContext.<init>(StandaloneExecutionContext.java:91)
	at
org.milyn.container.standalone.StandaloneExecutionContext.<init>(StandaloneExecutionContext.java:65)
	at org.milyn.Smooks.createExecutionContext(Smooks.java:383)
	at org.milyn.Smooks.createExecutionContext(Smooks.java:346)
	at
com.hyro.telstrapoc.smooks.SmooksTransformTest.runSmooksTransform(SmooksTransformTest.java:215)
	at
com.hyro.telstrapoc.smooks.SmooksTransformTest.testSmooks(SmooksTransformTest.java:139)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
	at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
	at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: [Error: was expecting type: java.lang.Object; but found type: null]
[Near : {... }
                els ....}]
             ^
[Line: 3, Column: 16]
	at org.mvel2.util.CompilerTools.expectType(CompilerTools.java:355)
	at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer._getAccessor(ReflectiveAccessorOptimizer.java:1052)
	at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeCollection(ReflectiveAccessorOptimizer.java:1079)
	at org.mvel2.ast.InlineCollectionNode.<init>(InlineCollectionNode.java:50)
	at org.mvel2.compiler.AbstractParser.nextToken(AbstractParser.java:1173)
	at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:118)
	at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:65)
	at org.mvel2.MVEL.compileExpression(MVEL.java:886)
	at org.mvel2.MVEL.compileExpression(MVEL.java:891)
	at org.mvel2.MVEL.compileExpression(MVEL.java:797)
	at
org.milyn.expression.MVELExpressionEvaluator.setExpression(MVELExpressionEvaluator.java:55)
	at org.milyn.javabean.BeanInstancePopulator.initialize(BeanInstancePopulator.java:235)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.milyn.cdr.annotation.Configurator.invoke(Configurator.java:453)
	... 42 more

If I remove the 3 lines initialising drools, it all passes again. I suspect that the MVEL
engine is a singleton, and both drools and smooks are using the same instance. I believe
drools is setting MVEL to disallow "IF" statements on the RHS of a rule. (see:
http://drools-java-rules-engine.46999.n3.nabble.com/Trivial-rule-with-con...)
I don't understand why MVEL thinks that my smooks expression is a RHS of a rule....

Heres the unit test:
@Test
    public void testSmooks2() throws Exception {

        String input =
        "<ns5:user partyAdminRoles=\"\" lastName=\"Edwards\"
firstName=\"Paul\" primary=\"false\" userID=\"pedwards\"
otpTokenRemainingUses=\"0\" registrationCodeRemainingUses=\"0\"
enabled=\"true\" customIntAttr1=\"0\"
xmlns:ns2=\"urn:oasis:names:tc:SPML:2:0:reference\"
xmlns=\"urn:oasis:names:tc:SPML:2:0\"
xmlns:ns4=\"urn:oasis:names:tc:SPML:2:0:password\"
xmlns:ns3=\"urn:oasis:names:tc:SPML:2:0:search\"
xmlns:ns5=\"http://hyro.com/da/objectmodel\"
xmlns:ns6=\"http://www.sifinfo.org/au/infrastructure/2.x\"
xmlns:ns7=\"urn:oasis:names:tc:SPML:2:0:batch\">\n" +
        "    <ns5:emailAddresses emailAddress=\&quot;pedwards(a)frazzle.co.nz\&quot;
primary=\"true\" type=\"Personal\"
modificationMode=\"0\"/>\n" +
        "    <ns5:emailAddresses emailAddress=\&quot;grumpy(a)frazzle.co.nz\&quot;
primary=\"false\" type=\"Personal\"
modificationMode=\"0\"/>\n" +
        "    <ns5:authzRoleSubscriptions status=\"Active\"
primary=\"false\" singlePasswordOptOut=\"false\"
reprovision=\"false\" customBoolAttr5=\"false\"
customBoolAttr4=\"false\" customBoolAttr3=\"false\"
customBoolAttr2=\"false\" customBoolAttr1=\"false\"
customIntAttr5=\"0\" customIntAttr4=\"0\"
customIntAttr3=\"0\" customIntAttr2=\"0\"
customIntAttr1=\"0\">\n" +
        "        <ns5:role roleName=\"Account\">\n" +
        "            <ns5:entitlement entitlementID=\"Open LDAP
Account\" type=\"Account\"/>\n" +
        "        </ns5:role>\n" +
        "    </ns5:authzRoleSubscriptions>\n" +
        "    <ns5:auxEntities/>\n" +
        "</ns5:user>\n";

        UserType inUser = null;
        Unmarshaller unmarshaller = null;

        try {
            log.debug("Unmarshalling: " + input);
            unmarshaller = (Unmarshaller) SpmlConstants.unmarshallerPool.borrowObject();
            inUser = ((JAXBElement<UserType>) unmarshaller.unmarshal(new
StringReader(input))).getValue();
        } catch (JAXBException e) {
            log.error("Exception while trying to unmarshall input daSpmlString:
" + e.getMessage());
            e.printStackTrace();
            throw e;
        } catch (Exception e) {
            log.error("Exception while trying to unmarshall input daSpmlString:
" + e.getMessage());
            e.printStackTrace();
            throw e;
        } finally {
            SpmlConstants.unmarshallerPool.returnObject(unmarshaller);
        } 

        log.debug("Unmarshalled: " + inUser.getUserID());

        Properties parsed = runSmooksTransform(inUser);
        assertNotNull(parsed);

        for(Iterator<Object> i = parsed.keySet().iterator(); i.hasNext();) {
            Object key = i.next();
            Object value = parsed.get(key);
            System.out.println("Key: " + key + " value: " + value);
        }

    }

Heres the smooks file:

<?xml version="1.0"?>
<smooks-resource-list xmlns="http://www.milyn.org/xsd/smooks-1.1.xsd" 

xmlns:core="http://www.milyn.org/xsd/smooks/smooks-core-1.3.xsd"

xmlns:jb="http://www.milyn.org/xsd/smooks/javabean-1.3.xsd">

    <!-- NOTE NOTE NOTE -->
    <!-- This is purely to map user or person props to the LDAP name. Anything that is
handled -->
    <!-- explicitly (like firstname or lastname) does not get mapped -->

    <jb:bean beanId="UserOrPerson" class="java.util.Properties"
createOnElement="com.hyro.spmlservice.generated.objectmodel.PersonType">

        <jb:value property="employeeNumber" decoder="String"
data="personID" />
        <jb:value property="mobile" decoder="String"
data="mobileTel" />
        <jb:value property="facsimileTelephoneNumber"
decoder="String" data="workFax" />
        <jb:value property="telephoneNumber" decoder="String"
data="workTel" />
        <jb:value property="description" decoder="String"
data="title" />       
        <jb:value property="l" decoder="String"
data="customAttr27" />
        <jb:value property="physicalDeliveryOfficeName"
decoder="String" data="customAttr8" />
        <jb:value property="postalCode" decoder="String"
data="customAttr7" />

    </jb:bean>

    <jb:bean beanId="UserOrPerson" class="java.util.Properties"
createOnElement="com.hyro.spmlservice.generated.objectmodel.UserType"> 
        <jb:value property="firstName" decoder="String"
data="firstName" />
        <jb:value property="lastName" decoder="String"
data="lastName" />
        <jb:value property="user" decoder="String"
data="userID" />

        <jb:value property="displayName" decoder="String"
data="customAttr4" />
        <jb:value property="postalCode" decoder="String"
data="customAttr2" />

        <jb:expression property="mail"
execOnElement="emailAddresses">  

              if(1 == 2) {
                return emailAddresses[0].emailAddress;
              }
                else {
                return "NOT FOUND";
              }
        </jb:expression>

    </jb:bean>    

    <jb:bean beanId="emailAddresses" class="java.util.ArrayList"
createOnElement="emailAddresses">
        <jb:wiring beanIdRef="emailAddressType" />
    </jb:bean>

    <jb:bean beanId="emailAddressType"
class="com.hyro.spmlservice.generated.objectmodel.EmailAddressType"
createOnElement="com.hyro.spmlservice.generated.objectmodel.EmailAddressType">
        <jb:value property="modificationMode" decoder="Short"
data="modificationMode" />
        <jb:value property="emailAddress" decoder="String"
data="emailAddress" />
        <jb:value property="type" decoder="String"
data="type" />
        <jb:value property="primary" decoder="Boolean"
data="primary" />
    </jb:bean>    

</smooks-resource-list>

Any Ideas? I've wasted 3 days getting to this point....
--
Paul Edwards

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