Unable to invoke method with ObjectContext
------------------------------------------
Key: JEXL-125
URL: https://issues.apache.org/jira/browse/JEXL-125
Project: Commons JEXL
Issue Type: Bug
Affects Versions: 2.1.1
Environment: Java 1.6.0_20 on Windows 7
Reporter: Matteo Trotta
Hi, I'm trying to invoke a method on Object context but I can't get it to work.
I don't know if it's a bug or I'm doing it wrong.
Here it is the code I'm using:
{code:title=JexlTest.java}
package it.test;
import org.apache.commons.jexl2.Expression;
import org.apache.commons.jexl2.JexlContext;
import org.apache.commons.jexl2.JexlEngine;
import org.apache.commons.jexl2.ObjectContext;
import org.junit.Test;
public class JexlTest {
public static class Foo {
public String method() {
return "OK";
}
}
@Test
public void test() throws Exception {
JexlEngine jexl = new JexlEngine();
jexl.setStrict(true);
Expression e = jexl.createExpression("method()");
JexlContext jc = new ObjectContext<Foo>(jexl, new Foo());
System.out.println(e.evaluate(jc));
}
}
{code}
Here is the exception I'm getting:
{noformat}
org.apache.commons.jexl2.JexlException: it.test.JexlTest.test@19![0,8]:
'method();' method error
at org.apache.commons.jexl2.Interpreter.call(Interpreter.java:1078)
at org.apache.commons.jexl2.Interpreter.visit(Interpreter.java:1100)
at
org.apache.commons.jexl2.parser.ASTMethodNode.jjtAccept(ASTMethodNode.java:18)
at org.apache.commons.jexl2.Interpreter.visit(Interpreter.java:1317)
at
org.apache.commons.jexl2.parser.ASTReference.jjtAccept(ASTReference.java:18)
at org.apache.commons.jexl2.Interpreter.interpret(Interpreter.java:232)
at
org.apache.commons.jexl2.ExpressionImpl.evaluate(ExpressionImpl.java:65)
at it.test.JexlTest.test(JexlTest.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
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.runners.ParentRunner.runLeaf(ParentRunner.java:274)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:242)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:58)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:240)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:48)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:233)
at org.junit.runners.ParentRunner.run(ParentRunner.java:303)
at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
at
com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:71)
at
com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:202)
at
com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: org.apache.commons.jexl2.JexlException$Property:
org.apache.commons.jexl2.ObjectContext.get@42![0,9]: '#0.method;' inaccessible
or unknown property #0
at org.apache.commons.jexl2.Interpreter.visit(Interpreter.java:1341)
at
org.apache.commons.jexl2.parser.ASTReference.jjtAccept(ASTReference.java:18)
at org.apache.commons.jexl2.JexlEngine.getProperty(JexlEngine.java:615)
at org.apache.commons.jexl2.JexlEngine.getProperty(JexlEngine.java:587)
at org.apache.commons.jexl2.ObjectContext.get(ObjectContext.java:42)
at org.apache.commons.jexl2.Interpreter.call(Interpreter.java:1047)
{noformat}
Using a MapContext with variable "foo" set to 'new Foo()' and the expression
"foo.method()" gives no error.
Anyway for my use it's more practical a ObjectContext, as I have only one
object in the context.
Thank you for very much and keep up the excellent work!
Matteo Trotta
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