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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4600) Use ValueNodeList helper methods in CoalesceFunctionNode
Date Fri, 26 Mar 2010 07:56:27 GMT
Use ValueNodeList helper methods in CoalesceFunctionNode

                 Key: DERBY-4600
                 URL: https://issues.apache.org/jira/browse/DERBY-4600
             Project: Derby
          Issue Type: Improvement
          Components: SQL
    Affects Versions:
            Reporter: Knut Anders Hatlen
            Priority: Minor

CoalesceFunctionNode manually iterates over argumentsList (a ValueNodeList) in acceptChildren(),
preprocess(), remapColumnReferencesToExpressions() and isEquivalent(). ValueNodeList has helper
methods for the first three of those, and those helper methods should be used instead to simplify
the code. There is no helper method for isEquivalent(), but since very similar code is also
found in the isEquivalent() methods of BinaryListOperatorNode and ConditionalNode, we should
add a new helper and use it in those classes too.

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