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社区首页 >问答首页 >不能使用Acceleo调用Java服务

问不能使用Acceleo调用Java服务
EN

Stack Overflow用户
提问于 2013-08-12 22:30:08
回答 1查看 386关注 0票数 1

我已经使用EMF Ecore定义了一个自定义的元模型，现在我正在编写一个acceleo项目来生成适当的java代码。

对于几个用例来说，Acceleo是不够的，它主要是在模型中搜索特定元素并保存一些额外的信息，因此我需要调用自定义Java服务，并且我遵循了分步示例，并且我相信我知道如何编写查询来调用Java服务。

问题是，当我使用Java原语参数调用服务时，它运行得很流畅，但当我使用元模型类型编写服务时，我得到了以下错误：

代码语言：javascript
复制
org.eclipse.acceleo.engine.AcceleoEvaluationException: argument type mismatch
    at org.eclipse.acceleo.engine.internal.environment.AcceleoLibraryOperationVisitor.invoke(AcceleoLibraryOperationVisitor.java:1001)
    at org.eclipse.acceleo.engine.internal.environment.AcceleoLibraryOperationVisitor.callNonStandardOperation(AcceleoLibraryOperationVisitor.java:130)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitOperationCallExp(AcceleoEvaluationVisitor.java:1213)
    at org.eclipse.ocl.ecore.impl.OperationCallExpImpl.accept(OperationCallExpImpl.java:390)
    at org.eclipse.ocl.AbstractEvaluationVisitor.visitExpression(AbstractEvaluationVisitor.java:248)
    at org.eclipse.ocl.EvaluationVisitorDecorator.visitExpression(EvaluationVisitorDecorator.java:156)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1885)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoQueryInvocation(AcceleoEvaluationVisitor.java:873)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1862)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoIfBlock(AcceleoEvaluationVisitor.java:617)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1823)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplate(AcceleoEvaluationVisitor.java:914)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1817)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplateInvocation(AcceleoEvaluationVisitor.java:965)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1856)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoIfBlock(AcceleoEvaluationVisitor.java:587)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1823)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoForBlock(AcceleoEvaluationVisitor.java:537)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1833)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplate(AcceleoEvaluationVisitor.java:914)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1817)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplateInvocation(AcceleoEvaluationVisitor.java:965)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1856)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoIfBlock(AcceleoEvaluationVisitor.java:587)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1823)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoFileBlock(AcceleoEvaluationVisitor.java:424)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1846)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplate(AcceleoEvaluationVisitor.java:914)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1817)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplateInvocation(AcceleoEvaluationVisitor.java:965)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1856)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitAcceleoTemplate(AcceleoEvaluationVisitor.java:914)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.switchExpression(AcceleoEvaluationVisitor.java:1817)
    at org.eclipse.acceleo.engine.internal.evaluation.AcceleoEvaluationVisitor.visitExpression(AcceleoEvaluationVisitor.java:1042)
    at org.eclipse.ocl.internal.evaluation.QueryImpl.evaluate(QueryImpl.java:152)
    at org.eclipse.ocl.ecore.QueryImpl.evaluate(QueryImpl.java:62)
    at org.eclipse.acceleo.engine.generation.AcceleoEngine.doEvaluate(AcceleoEngine.java:361)
    at org.eclipse.acceleo.engine.generation.AcceleoEngine.evaluate(AcceleoEngine.java:142)
    at org.eclipse.acceleo.engine.service.AcceleoService.doGenerateTemplate(AcceleoService.java:869)
    at org.eclipse.acceleo.engine.service.AcceleoService.doGenerate(AcceleoService.java:585)
    at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.generate(AbstractAcceleoGenerator.java:193)
    at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.doGenerate(AbstractAcceleoGenerator.java:158)
    at com.muazothman.mobile.metamodel.android_converter.Main.doGenerate(Main.java:203)
    at org.eclipse.acceleo.ide.ui.launching.strategy.AcceleoLaunchOperation.run(AcceleoLaunchOperation.java:149)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2326)
    at org.eclipse.acceleo.ide.ui.launching.strategy.AcceleoPluginLaunchingStrategy.launch(AcceleoPluginLaunchingStrategy.java:239)
    at org.eclipse.acceleo.ide.ui.launching.strategy.AcceleoPluginLaunchingStrategy.launch(AcceleoPluginLaunchingStrategy.java:141)
    at org.eclipse.acceleo.internal.ide.ui.launching.AcceleoLaunchDelegate.launch(AcceleoLaunchDelegate.java:51)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:855)
    at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:704)
    at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1047)
    at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1251)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Caused by: java.lang.IllegalArgumentException: argument type mismatch
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.acceleo.engine.internal.environment.AcceleoLibraryOperationVisitor.invoke(AcceleoLibraryOperationVisitor.java:993)
    ... 66 more

有人知道哪里出问题了吗？

下面是java代码：

代码语言：javascript
复制
public void f(CustomAction c){
}

以下是mtl代码

代码语言：javascript
复制
[query public f(arg0 : CustomAction) : OclVoid
    = invoke('converter.services.ActivityServices', 'f(metamodel.CustomAction)', Sequence{arg0.oclAsType(CustomAction)}) /]
java
eclipse-plugin
code-generation
acceleo
EN

回答 1

Stack Overflow用户

发布于 2013-08-13 22:36:24

您的服务是否真的位于converter.services包中，生成的类CustomAction是否真的位于“元模型”包中？

顺便说一下，你应该打电话给

代码语言：javascript
复制
[query public f(arg0 : CustomAction) : OclVoid
    = invoke('converter.services.ActivityServices', 'f(metamodel.CustomAction)', Sequence{arg0}) /]

没有必要显式地将它转换为CustomAction，因为它是这样声明的。

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/18189639

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