[jira] Created: (ESPER-411) Operands of expression passed the wrong way round in patterns

Operands of expression passed the wrong way round in patterns
-------------------------------------------------------------

                 Key: ESPER-411
                 URL: http://jira.codehaus.org/browse/ESPER-411
             Project: Esper
          Issue Type: Bug
    Affects Versions: 3.2
            Reporter: Mitch
         Attachments: Test.java

In the pattern:
[ every e1=TestEvent -> e2=TestEvent(e1.quantity > e2.quantity) ]
the two quantities are passed to the inequality expression the wrong way round, meaning the pattern fires in exactly the wrong places.

Any operation on the quantities changes the behaviour eg:
e2=TestEvent(e1.quantity + 0 > e2.quantity + 0)
behaves as expected.

Have attached test class (with main()) which shows the problem. Not tested pre 3.2.
TestEvent is a POJO, and the error occurs if quantity is an int or a float- not tested others.
I dont think it matters what the expression operator is.


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     [ http://jira.codehaus.org/browse/ESPER-411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Bernhardt updated ESPER-411:
-----------------------------------

    Fix Version/s: 3.3

Assigned to 3.3

> Operands of expression passed the wrong way round in patterns
> -------------------------------------------------------------
>
>                 Key: ESPER-411
>                 URL: http://jira.codehaus.org/browse/ESPER-411
>             Project: Esper
>          Issue Type: Bug
>    Affects Versions: 3.2
>            Reporter: Mitch
>             Fix For: 3.3
>
>         Attachments: Test.java
>
>
> In the pattern:
> [ every e1=TestEvent -> e2=TestEvent(e1.quantity > e2.quantity) ]
> the two quantities are passed to the inequality expression the wrong way round, meaning the pattern fires in exactly the wrong places.
> Any operation on the quantities changes the behaviour eg:
> e2=TestEvent(e1.quantity + 0 > e2.quantity + 0)
> behaves as expected.
> Have attached test class (with main()) which shows the problem. Not tested pre 3.2.
> TestEvent is a POJO, and the error occurs if quantity is an int or a float- not tested others.
> I dont think it matters what the expression operator is.

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    [ http://jira.codehaus.org/browse/ESPER-411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=199807#action_199807 ]

Thomas Bernhardt commented on ESPER-411:
----------------------------------------

A workaround is to formulate as [ every e1=TestEvent -> e2=TestEvent(quantity < e1.quantity) ]

> Operands of expression passed the wrong way round in patterns
> -------------------------------------------------------------
>
>                 Key: ESPER-411
>                 URL: http://jira.codehaus.org/browse/ESPER-411
>             Project: Esper
>          Issue Type: Bug
>    Affects Versions: 3.2
>            Reporter: Mitch
>             Fix For: 3.3
>
>         Attachments: Test.java
>
>
> In the pattern:
> [ every e1=TestEvent -> e2=TestEvent(e1.quantity > e2.quantity) ]
> the two quantities are passed to the inequality expression the wrong way round, meaning the pattern fires in exactly the wrong places.
> Any operation on the quantities changes the behaviour eg:
> e2=TestEvent(e1.quantity + 0 > e2.quantity + 0)
> behaves as expected.
> Have attached test class (with main()) which shows the problem. Not tested pre 3.2.
> TestEvent is a POJO, and the error occurs if quantity is an int or a float- not tested others.
> I dont think it matters what the expression operator is.

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     [ http://jira.codehaus.org/browse/ESPER-411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Bernhardt resolved ESPER-411.
------------------------------------

    Resolution: Fixed

in release 3.3

> Operands of expression passed the wrong way round in patterns
> -------------------------------------------------------------
>
>                 Key: ESPER-411
>                 URL: http://jira.codehaus.org/browse/ESPER-411
>             Project: Esper
>          Issue Type: Bug
>    Affects Versions: 3.2
>            Reporter: Mitch
>             Fix For: 3.3
>
>         Attachments: Test.java
>
>
> In the pattern:
> [ every e1=TestEvent -> e2=TestEvent(e1.quantity > e2.quantity) ]
> the two quantities are passed to the inequality expression the wrong way round, meaning the pattern fires in exactly the wrong places.
> Any operation on the quantities changes the behaviour eg:
> e2=TestEvent(e1.quantity + 0 > e2.quantity + 0)
> behaves as expected.
> Have attached test class (with main()) which shows the problem. Not tested pre 3.2.
> TestEvent is a POJO, and the error occurs if quantity is an int or a float- not tested others.
> I dont think it matters what the expression operator is.

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