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Date: Sat, 18 Sep 2010 12:44:05 -0400 (EDT)
From: "Bruce Snyder (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Updated: (AMQ-2528)
 org.apache.activemq.broker.region.Queue#removeMatchingMessages(String
 selector) does not allow empty string as a selector, but empty string is a
 valid JMS message selector.
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     [ https://issues.apache.org/activemq/browse/AMQ-2528?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bruce Snyder updated AMQ-2528:
------------------------------

    Fix Version/s: 5.5.0
                       (was: 5.4.1)

> org.apache.activemq.broker.region.Queue#removeMatchingMessages(String selector) does not allow empty string as a selector, but empty string is a valid JMS message selector.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-2528
>                 URL: https://issues.apache.org/activemq/browse/AMQ-2528
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Selector
>    Affects Versions: 5.3.0
>            Reporter: Stirling Chow
>             Fix For: 5.5.0
>
>
> According to the JMS specification, an "empty string" message selector indicates no message selector (i.e., all messages should be selected):
> "A message selector is a String whose syntax is based on a subset of the SQL92 conditional expression syntax. If the value of a message selector is an empty string, the value is treated as a null and indicates that there is no message selector for the message consumer."
> However, if org.apache.activemq.broker.region.Queue#removeMatchingMessages(String selector)  with selector = "", the following stacktrace is generated:
> javax.jms.InvalidSelectorException: 
> 	at org.apache.activemq.selector.SelectorParser.parse(SelectorParser.java:72)
> 	at org.apache.activemq.selector.SelectorParser.parse(SelectorParser.java:46)
> 	at org.apache.activemq.broker.region.Queue.createSelectorFilter(Queue.java:1200)
> 	at org.apache.activemq.broker.region.Queue.removeMatchingMessages(Queue.java:908)
> 	at org.apache.activemq.broker.region.Queue.removeMatchingMessages(Queue.java:898)
> 	at com.invoqsystems.foundation.utility.AMQUtility.deleteMessages(AMQUtility.java:192)
> 	at com.invoqsystems.foundation.utility.AMQUtilityTest.testDeleteMessages(AMQUtilityTest.java:187)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)
> 	at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)
> 	at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
> 	at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
> 	at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
> 	at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:71)
> 	at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
> 	at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
> 	at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
> 	at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
> 	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:38)
> 	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
> Caused by: org.apache.activemq.selector.ParseException: Parse error at line 0, column 0.  Encountered: <EOF>
> 	at org.apache.activemq.selector.SelectorParser.generateParseException(SelectorParser.java:1196)
> 	at org.apache.activemq.selector.SelectorParser.jj_consume_token(SelectorParser.java:1148)
> 	at org.apache.activemq.selector.SelectorParser.unaryExpr(SelectorParser.java:453)
> 	at org.apache.activemq.selector.SelectorParser.multExpr(SelectorParser.java:375)
> 	at org.apache.activemq.selector.SelectorParser.addExpression(SelectorParser.java:344)
> 	at org.apache.activemq.selector.SelectorParser.comparisonExpression(SelectorParser.java:196)
> 	at org.apache.activemq.selector.SelectorParser.equalityExpression(SelectorParser.java:141)
> 	at org.apache.activemq.selector.SelectorParser.andExpression(SelectorParser.java:120)
> 	at org.apache.activemq.selector.SelectorParser.orExpression(SelectorParser.java:99)
> 	at org.apache.activemq.selector.SelectorParser.JmsSelector(SelectorParser.java:91)
> 	at org.apache.activemq.selector.SelectorParser.parse(SelectorParser.java:69)
> 	... 26 more

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