Re: Stack overflow with Derby adapter

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Fri Sep 12 2008 - 04:23:03 EDT

  • Next message: Aristedes Maniatis: "Re: Stack overflow with Derby adapter"

    This is a known problem on Derby. If this happens inside a paginated
    list, here is a workaround (that needs to be ported to the adapter at
    some point) :

    ((IncrementalFaultList) list).setMaxFetchSize(1000);
    // 1000 is just a random #, you'll need to play with this parameter to
    optimize it
    // default is 10000.

    Thanks,
    Andrus

    On Sep 12, 2008, at 10:50 AM, Řyvind Harboe wrote:

    > I've got an obscure bug in our app that is caused by a stack
    > overflow with Derby.
    >
    > The problem is that 'OR' is implemented recursively inside Derby, so
    > when using ExpressionFactoyr.inExp() w/a *long* list, the stack
    > overflows.
    >
    >
    > Can this be worked around in the Cayenne Derby adapter?
    >
    > Should it?
    >
    > Ideally I'd like to see it worked around in the Cayenne Derby
    > adapter and
    > fixed in Derby I guess.
    >
    >
    > # Caused by: java.lang.StackOverflowError
    > # org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown
    > Source)
    > #
    > org
    > .apache
    > .derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown
    > Source)
    > #
    > org
    > .apache
    > .derby
    > .impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown
    > Source)
    > # org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown
    > Source)
    > #
    > org
    > .apache
    > .derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown
    > Source)
    > #
    > org
    > .apache
    > .derby
    > .impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown
    > Source)
    > # org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown
    > Source)
    > #
    > org
    > .apache
    > .derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown
    > Source)
    > #
    > org
    > .apache
    > .derby
    > .impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown
    > Source)
    >
    >
    > --
    > Řyvind Harboe
    > http://www.zylin.com/zy1000.html
    > ARM7 ARM9 XScale Cortex
    > JTAG debugger and flash programmer
    >



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