[
https://issues.apache.org/jira/browse/CAMEL-7294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16929026#comment-16929026
]
Omar Al-Safi commented on CAMEL-7294:
-------------------------------------
Hey [~davsclaus], I was digging to know what is the motivation behind excluding
`hashCode` and `equal`? It could be the case that a component returns an object
with overriden hashCode and equal and you want to retrieve these through Simple
language as it is much simpler than invoking `.process` and set it there.
> Simple Language - Accessing hashCode
> -------------------------------------
>
> Key: CAMEL-7294
> URL: https://issues.apache.org/jira/browse/CAMEL-7294
> Project: Camel
> Issue Type: Bug
> Affects Versions: 2.12.3
> Reporter: Alan Foster
> Assignee: Willem Jiang
> Priority: Major
>
> With the following blueprint route
> {code:xml}
> <camelContext trace="false"
> xmlns="http://camel.apache.org/schema/blueprint";>
> <route>
> <from uri="direct:entry"/>
> <setBody>
> <simple>Hello World</simple>
> </setBody>
> <log message="The current body is :: ${body}" />
> <setBody>
> <simple>${body.hashCode}</simple>
> </setBody>
> <log message="The id hashcode is : ${body}" />
> </route>
> </camelContext>
> {code}
> The following exception occurs
> {code}
> org.apache.camel.CamelExecutionException: Exception occurred during execution
> on the exchange: Exchange[Message: Hello World]
> at
> org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1379)
> at
> org.apache.camel.util.ExchangeHelper.extractResultBody(ExchangeHelper.java:622)
> at
> org.apache.camel.impl.DefaultProducerTemplate.extractResultBody(DefaultProducerTemplate.java:467)
> at
> org.apache.camel.impl.DefaultProducerTemplate.extractResultBody(DefaultProducerTemplate.java:463)
> at
> org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:139)
> at
> org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:144)
> at camel.SimpleEqualsTest.testRoute(SimpleEqualsTest.java:30)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
> at org.junit.rules.RunRules.evaluate(RunRules.java:20)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
> at org.junit.runners.Suite.runChild(Suite.java:127)
> at org.junit.runners.Suite.runChild(Suite.java:26)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
> at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
> at
> com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
> at
> com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202)
> at
> com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:65)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
> Caused by: org.apache.camel.language.bean.RuntimeBeanExpressionException:
> Failed to invoke method: .hashCode on null due to:
> org.apache.camel.language.bean.RuntimeBeanExpressionException: Failed to
> invoke method: hashCode on null due to:
> org.apache.camel.component.bean.MethodNotFoundException: Method with name:
> hashCode not found on bean: Hello World of type: java.lang.String.
> Exchange[Message: Hello World]
> at
> org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:117)
> at
> org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:132)
> at
> org.apache.camel.model.language.ExpressionDefinition.evaluate(ExpressionDefinition.java:121)
> at
> org.apache.camel.model.language.ExpressionDefinition.evaluate(ExpressionDefinition.java:113)
> at
> org.apache.camel.builder.ExpressionBuilder$33.evaluate(ExpressionBuilder.java:821)
> at
> org.apache.camel.support.ExpressionAdapter.evaluate(ExpressionAdapter.java:36)
> at
> org.apache.camel.builder.SimpleBuilder.evaluate(SimpleBuilder.java:83)
> at
> org.apache.camel.processor.SetBodyProcessor.process(SetBodyProcessor.java:46)
> at
> org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)
> at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
> at
> org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:51)
> at
> org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)
> at
> org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:73)
> at
> org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:378)
> at
> org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:346)
> at
> org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:242)
> at
> org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:346)
> at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:184)
> at
> org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:124)
> at
> org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:137)
> ... 41 more
> Caused by: org.apache.camel.language.bean.RuntimeBeanExpressionException:
> Failed to invoke method: hashCode on null due to:
> org.apache.camel.component.bean.MethodNotFoundException: Method with name:
> hashCode not found on bean: Hello World of type: java.lang.String.
> Exchange[Message: Hello World]
> at
> org.apache.camel.language.bean.BeanExpression$OgnlInvokeProcessor.process(BeanExpression.java:285)
> at
> org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:114)
> ... 63 more
> Caused by: org.apache.camel.component.bean.MethodNotFoundException: Method
> with name: hashCode not found on bean: Hello World of type: java.lang.String.
> Exchange[Message: Hello World]
> at
> org.apache.camel.component.bean.BeanInfo.createInvocation(BeanInfo.java:264)
> at
> org.apache.camel.component.bean.BeanInfo.createInvocation(BeanInfo.java:180)
> at
> org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:148)
> at
> org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:105)
> at
> org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:67)
> at
> org.apache.camel.language.bean.BeanExpression$InvokeProcessor.process(BeanExpression.java:189)
> at
> org.apache.camel.language.bean.BeanExpression$OgnlInvokeProcessor.process(BeanExpression.java:281)
> ... 64 more
> {code}
--
This message was sent by Atlassian Jira
(v8.3.2#803003)
