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From "Vladimir Orlov (JIRA)" <>
Subject [jira] Created: (JXPATH-134) NodeIterator usage in AttributeContext
Date Fri, 24 Jul 2009 12:58:14 GMT
NodeIterator usage in AttributeContext

                 Key: JXPATH-134
             Project: Commons JXPath
          Issue Type: Bug
    Affects Versions: 1.3
         Environment: JDK 1.5.0_12
            Reporter: Vladimir Orlov

There is the following piece of code in AttributeContext class, nextNode() method:

        if (!iterator.setPosition(iterator.getPosition() + 1)) {
            return false;

It implies that the following precondition is satisfied in the NodeIterator implementation:
in its initial state NodeIterator implementation has the position set in 0 when the first
position index is actually 1. At the same time NodeIterator interface implies that the client
code should call the setPosition() method of the NodeIterator first and only after that it
can call the getPosition()  or getNodePointer(). There is no any information about such a
strange condition to satisfy for the NodeIterator implementation in the Javadoc.

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