Newbie Question: Using Groovy on file sample

[jshingler]

I am a newbie to Spring Integration and Love everything I have seen so far.

I have been experimenting with the sample apps and making minor modifications to make sure I understand them.

I am working with the file sample. I would like to implement the org.springframework.integration.sampes.filecopy.Ha ndler in Groovy.

When I test it by running TextFileCopyTest, I receive the following stack trace:

(Any Thoughts? Does someone have an example using Spring Integration and Groovy this way from the Samples?)


org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'org.springframework.integration.config.ConsumerEn dpointFactoryBean#1': Cannot resolve reference to bean 'org.springframework.integration.config.ServiceAct ivatorFactoryBean#0' while setting bean property 'handler'; nested exception is org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'org.springframework.integration.config.ServiceAct ivatorFactoryBean#0': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Found ambiguous parameter type [class java.lang.String] for method match: [public void org.springframework.integration.samples.filecopy.G roovyHandler.super$1$finalize(), public boolean org.springframework.integration.samples.filecopy.G roovyHandler.super$1$equals(java.lang.Object), public void org.springframework.integration.samples.filecopy.G roovyHandler.super$1$wait(long), public void org.springframework.integration.samples.filecopy.G roovyHandler.setMetaClass(groovy.lang.MetaClass), public java.lang.Object org.springframework.integration.samples.filecopy.G roovyHandler.this$dist$get$2(java.lang.String)]
at org.springframework.beans.factory.support.BeanDefi nitionValueResolver.resolveReference(BeanDefinitio nValueResolver.java:328)
at org.springframework.beans.factory.support.BeanDefi nitionValueResolver.resolveValueIfNecessary(BeanDe finitionValueResolver.java:106)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.applyPropertyValues(Abs tractAutowireCapableBeanFactory.java:1325)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.populateBean(AbstractAu towireCapableBeanFactory.java:1086)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.doCreateBean(AbstractAu towireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.Abstract BeanFactory$1.getObject(AbstractBeanFactory.java:2 91)
at org.springframework.beans.factory.support.DefaultS ingletonBeanRegistry.getSingleton(DefaultSingleton BeanRegistry.java:222)
at org.springframework.beans.factory.support.Abstract BeanFactory.doGetBean(AbstractBeanFactory.java:288 )
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultL istableBeanFactory.preInstantiateSingletons(Defaul tListableBeanFactory.java:563)
at org.springframework.context.support.AbstractApplic ationContext.finishBeanFactoryInitialization(Abstr actApplicationContext.java:895)
at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:425)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:197)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:172)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:158)
at org.springframework.integration.samples.filecopy.T extFileCopyTest.testTextBasedCopy(TextFileCopyTest .java:34)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runRefle ctiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallabl e.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExpl osively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod .evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runChild( BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild( BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner. java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRu nner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentR unner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRu nner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRu nner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.ja va:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestR eference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecutio n.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'org.springframework.integration.config.ServiceAct ivatorFactoryBean#0': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalArgumentException: Found ambiguous parameter type [class java.lang.String] for method match: [public void org.springframework.integration.samples.filecopy.G roovyHandler.super$1$finalize(), public boolean org.springframework.integration.samples.filecopy.G roovyHandler.super$1$equals(java.lang.Object), public void org.springframework.integration.samples.filecopy.G roovyHandler.super$1$wait(long), public void org.springframework.integration.samples.filecopy.G roovyHandler.setMetaClass(groovy.lang.MetaClass), public java.lang.Object org.springframework.integration.samples.filecopy.G roovyHandler.this$dist$get$2(java.lang.String)]
at org.springframework.beans.factory.support.FactoryB eanRegistrySupport.doGetObjectFromFactoryBean(Fact oryBeanRegistrySupport.java:149)
at org.springframework.beans.factory.support.FactoryB eanRegistrySupport.getObjectFromFactoryBean(Factor yBeanRegistrySupport.java:102)
at org.springframework.beans.factory.support.Abstract BeanFactory.getObjectForBeanInstance(AbstractBeanF actory.java:1429)
at org.springframework.beans.factory.support.Abstract BeanFactory.doGetBean(AbstractBeanFactory.java:245 )
at org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.BeanDefi nitionValueResolver.resolveReference(BeanDefinitio nValueResolver.java:322)
... 38 more
Caused by: java.lang.IllegalArgumentException: Found ambiguous parameter type [class java.lang.String] for method match: [public void org.springframework.integration.samples.filecopy.G roovyHandler.super$1$finalize(), public boolean org.springframework.integration.samples.filecopy.G roovyHandler.super$1$equals(java.lang.Object), public void org.springframework.integration.samples.filecopy.G roovyHandler.super$1$wait(long), public void org.springframework.integration.samples.filecopy.G roovyHandler.setMetaClass(groovy.lang.MetaClass), public java.lang.Object org.springframework.integration.samples.filecopy.G roovyHandler.this$dist$get$2(java.lang.String)]
at org.springframework.util.Assert.isNull(Assert.java :89)
at org.springframework.integration.util.MessagingMeth odInvokerHelper.findHandlerMethodsForTarget(Messag ingMethodInvokerHelper.java:350)
at org.springframework.integration.util.MessagingMeth odInvokerHelper.<init>(MessagingMethodInvokerHelpe r.java:165)
at org.springframework.integration.util.MessagingMeth odInvokerHelper.<init>(MessagingMethodInvokerHelpe r.java:117)
at org.springframework.integration.util.MessagingMeth odInvokerHelper.<init>(MessagingMethodInvokerHelpe r.java:112)
at org.springframework.integration.handler.MethodInvo kingMessageProcessor.<init>(MethodInvokingMessageP rocessor.java:56)
at org.springframework.integration.handler.ServiceAct ivatingHandler.<init>(ServiceActivatingHandler.jav a:34)
at org.springframework.integration.config.ServiceActi vatorFactoryBean.createMethodInvokingHandler(Servi ceActivatorFactoryBean.java:48)
at org.springframework.integration.config.AbstractSta ndardMessageHandlerFactoryBean.createHandler(Abstr actStandardMessageHandlerFactoryBean.java:72)
at org.springframework.integration.config.AbstractSim pleMessageHandlerFactoryBean.createHandlerInternal (AbstractSimpleMessageHandlerFactoryBean.java:89)
at org.springframework.integration.config.AbstractSim pleMessageHandlerFactoryBean.getObject(AbstractSim pleMessageHandlerFactoryBean.java:68)
at org.springframework.integration.config.AbstractSim pleMessageHandlerFactoryBean.getObject(AbstractSim pleMessageHandlerFactoryBean.java:31)
at org.springframework.beans.factory.support.FactoryB eanRegistrySupport.doGetObjectFromFactoryBean(Fact oryBeanRegistrySupport.java:142)
... 43 more

[oleg.zhurakousky]

Could you please post your configuration so we can get some context as to how you are doing it?

[Mark Fisher]

One important point this raises is that we need to add a Groovy sample, so I just created a task in JIRA for that: https://jira.springsource.org/browse/INT-1888

In the meantime, you can see a few examples of using Groovy scripts from within Spring Integration components in these test configurations (see the XML files): http://git.springsource.org/spring-i.../groovy/config

Hope that helps.
-Mark

[jshingler]

Mark and Oleg,

Thanks for the speedy reply, . . . I will look at the examples and see if I get some insights.

Here is my config file and GroovyHandler:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:integration="http://www.springframework.org/schema/integration"
xmlns:file="http://www.springframework.org/schema/integration/file"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schem...ring-beans.xsd
http://www.springframework.org/schema/integration
http://www.springframework.org/schem...ntegration.xsd
http://www.springframework.org/schema/integration/file
http://www.springframework.org/schema/integration/file/spring-integration-file.xsd">

<bean class="org.springframework.beans.factory.config.Pr opertyPlaceholderConfigurer"/>

<file:inbound-channel-adapter id="filesIn"
directory="/temp/spring-integration-samples/input"
>
<!--
filename-pattern="[a-z]+.txt">
-->
<integrationoller id="poller" fixed-delay="5000"/>
</file:inbound-channel-adapter>

<file:file-to-string-transformer input-channel="filesIn" output-channel="store"/>

<integration:channel id="store"/>

<integration:service-activator input-channel="store"
output-channel="filesOut"
ref="handler"/>

<file:outbound-channel-adapter id="filesOut" directory="file:/temp/spring-integration-samples/output"/>

<bean id="handler" class="org.springframework.integration.samples.fil ecopy.GroovyHandler"/>

</beans>

==============================

package org.springframework.integration.samples.filecopy

class GroovyHandler {

public String handleString(String input) {
System.out.println("Copying text: " + input);
return input.toUpperCase();
}

}

[Mark Fisher]

When you look at those samples (in the tests), you will see that in Spring Integration you can use Groovy as *just a Script* instead of a class.

However, if you do want a "bean" that is actually Groovy-based, then just have a look at the core Spring support for that as described here: http://static.springsource.org/sprin...e-beans-groovy

[jshingler]

I 've tried to simplify the example and have an attachment of the eclipse project.

In order to simplify the process I switched from a service activator to an transformer with an inline groovy script.

Note it is using the loadConfig in the same directory as the test, not the resource version.

When I run TextFileCopyTest, I receive the following error and stack trace:

Cannot resolve the name 'integration:innerPollerType' to a(n) 'type definition' component.

Any help would be appreciated.


org.springframework.beans.factory.xml.XmlBeanDefin itionStoreException: Line 52 in XML document from class path resource [org/springframework/integration/samples/filecopy/loadConfig.xml] is invalid; nested exception is org.xml.sax.SAXParseException: src-resolve: Cannot resolve the name 'integration:innerPollerType' to a(n) 'type definition' component.
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.doLoadBeanDefinitions(XmlBeanDefinitio nReader.java:396)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.loadBeanDefinitions(XmlBeanDefinitionR eader.java:334)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.loadBeanDefinitions(XmlBeanDefinitionR eader.java:302)
at org.springframework.beans.factory.support.Abstract BeanDefinitionReader.loadBeanDefinitions(AbstractB eanDefinitionReader.java:143)
at org.springframework.context.support.AbstractXmlApp licationContext.loadBeanDefinitions(AbstractXmlApp licationContext.java:122)
at org.springframework.context.support.AbstractXmlApp licationContext.loadBeanDefinitions(AbstractXmlApp licationContext.java:92)
at org.springframework.context.support.AbstractRefres hableApplicationContext.refreshBeanFactory(Abstrac tRefreshableApplicationContext.java:130)
at org.springframework.context.support.AbstractApplic ationContext.obtainFreshBeanFactory(AbstractApplic ationContext.java:467)
at org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:397)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:197)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:172)
at org.springframework.context.support.ClassPathXmlAp plicationContext.<init>(ClassPathXmlApplicationCon text.java:158)
at org.springframework.integration.samples.filecopy.T extFileCopyTest.testTextBasedCopy(TextFileCopyTest .java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runRefle ctiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallabl e.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExpl osively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod .evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runChild( BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild( BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner. java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRu nner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentR unner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRu nner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRu nner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.ja va:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestR eference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecutio n.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRu nner.main(RemoteTestRunner.java:197)
Caused by: org.xml.sax.SAXParseException: src-resolve: Cannot resolve the name 'integration:innerPollerType' to a(n) 'type definition' component.
at com.sun.org.apache.xerces.internal.util.ErrorHandl erWrapper.createSAXParseException(ErrorHandlerWrap per.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandl erWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorRe porter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDHandler.reportSchemaErr(XSDHandler.java:253 7)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDHandler.reportSchemaError(XSDHandler.java:2 528)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDHandler.getGlobalDecl(XSDHandler.java:1472)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDElementTraverser.traverseNamedElement(XSDEl ementTraverser.java:369)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDElementTraverser.traverseLocal(XSDElementTr averser.java:179)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDHandler.traverseLocalElements(XSDHandler.ja va:2049)
at com.sun.org.apache.xerces.internal.impl.xs.travers ers.XSDHandler.parseSchema(XSDHandler.java:582)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSche maLoader.loadSchema(XMLSchemaLoader.java:552)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSche maValidator.findSchemaGrammar(XMLSchemaValidator.j ava:2436)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSche maValidator.handleStartElement(XMLSchemaValidator. java:1781)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSche maValidator.startElement(XMLSchemaValidator.java:7 05)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl.scanStartElement(XMLNSDocumentScann erImpl.java:400)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tFragmentScannerImpl$FragmentContentDriver.next(XM LDocumentFragmentScannerImpl.java:2755)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocum entScannerImpl.next(XMLNSDocumentScannerImpl.java: 140)
at com.sun.org.apache.xerces.internal.impl.XMLDocumen tFragmentScannerImpl.scanDocument(XMLDocumentFragm entScannerImpl.java:511)
at com.sun.org.apache.xerces.internal.parsers.XML11Co nfiguration.parse(XML11Configuration.java:808)
at com.sun.org.apache.xerces.internal.parsers.XML11Co nfiguration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLPars er.parse(XMLParser.java:119)
at com.sun.org.apache.xerces.internal.parsers.DOMPars er.parse(DOMParser.java:235)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBu ilderImpl.parse(DocumentBuilderImpl.java:284)
at org.springframework.beans.factory.xml.DefaultDocum entLoader.loadDocument(DefaultDocumentLoader.java: 75)
at org.springframework.beans.factory.xml.XmlBeanDefin itionReader.doLoadBeanDefinitions(XmlBeanDefinitio nReader.java:388)
... 34 more

[oleg.zhurakousky]

Ok, first change your POM to use 2.0.2.BUILD-SNAPSHOT. The 'innerPollerType' was removed https://jira.springsource.org/browse/INT-1715.
Let us now. I'll try to run it in a bit.