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https://issues.apache.org/jira/browse/JEXL-315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Henri Biestro updated JEXL-315:
-------------------------------
Assignee: Henri Biestro
> JxltEngine literal string strings ending in \ $ or # throw
> JxltEngine$Exception
> -------------------------------------------------------------------------------
>
> Key: JEXL-315
> URL: https://issues.apache.org/jira/browse/JEXL-315
> Project: Commons JEXL
> Issue Type: Bug
> Affects Versions: 3.1
> Reporter: Mike Bartlett
> Assignee: Henri Biestro
> Priority: Minor
>
> When parsing literal strings with the JxltEngine, if the string ends with \ $
> or # a JxltEngine$Exception is thrown. Escaping the ending character works,
> but seems an unnecessary burden on the user.
> Example:
> JxltEngine jxltEngine = (new JexlBuilder()).create().createJxltEngine();
> Expression exp = jxltEngine.createExpression("Testing$");
> Object value = exp.evaluate(new MapContext());
> Stack Trace:
> org.apache.commons.jexl3.JxltEngine$Exception:
> com.openmarket.workflow.el.ElEngineTest.testBug@40 failed to parse
> 'Testing$'org.apache.commons.jexl3.JxltEngine$Exception:
> com.openmarket.workflow.el.ElEngineTest.testBug@40 failed to parse 'Testing$'
> at
> org.apache.commons.jexl3.internal.TemplateEngine.createExpression(TemplateEngine.java:668)
> at org.apache.commons.jexl3.JxltEngine.createExpression(JxltEngine.java:217)
> at com.openmarket.workflow.el.ElEngineTest.testBug(ElEngineTest.java:40) at
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498) at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
> org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
> org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
> org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
> org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
> org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
> at
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
> at
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)Caused
> by: org.apache.commons.jexl3.JxltEngine$Exception:
> com.openmarket.workflow.el.ElEngineTest.testBug@40 malformed expression:
> Testing$ at
> org.apache.commons.jexl3.internal.TemplateEngine.parseExpression(TemplateEngine.java:886)
> at
> org.apache.commons.jexl3.internal.TemplateEngine.createExpression(TemplateEngine.java:664)
> ... 25 more
>
> Simple Fix in the code:
> org.apache.commons.jexl3.internal.TemplateEngine
> In method:
> {quote}{{TemplateExpression parseExpression(JexlInfo info, String expr, Scope
> scope) { // CSOFF: MethodLength}}
>
> {{for (int column = 0; column < size; ++column) {}}
> {{ ...}}
> {{}}}
> {{// Add this code at the end of the for loop to h}}{{andle strings ending in
> \, # or $}}
> {{ if (state == ParseState.ESCAPE) {}}
> {{ strb.append('\\');}}
> {{ state = ParseState.CONST;}}
> {{ } else if (state == ParseState.DEFERRED0) {}}
> {{ strb.append(deferredChar);}}
> {{ state = ParseState.CONST;}}
> {{ } else if (state == ParseState.IMMEDIATE0) {}}
> {{ strb.append(immediateChar);}}
> {{ state = ParseState.CONST;}}
> {{ }}}
> {{...}}
> {quote}
>
>
>
>
>
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