Examples with XPathContext org.apache.xpath.XPathContext used on opensource projects

Example 16 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class KeyTable method getNodeSetDTMByKey.

/**
   * Given a valid element key, return the corresponding node list.
   * 
   * @param name The name of the key, which must match the 'name' attribute on xsl:key.
   * @param ref The value that must match the value found by the 'match' attribute on xsl:key.
   * @return a set of nodes referenced by the key named <CODE>name</CODE> and the reference <CODE>ref</CODE>. If no node is referenced by this key, an empty node set is returned.
   */
public XNodeSet getNodeSetDTMByKey(QName name, XMLString ref) {
    XNodeSet refNodes = (XNodeSet) getRefsTable().get(ref);
    // clone wiht reset the node set
    try {
        if (refNodes != null) {
            refNodes = (XNodeSet) refNodes.cloneWithReset();
        }
    } catch (CloneNotSupportedException e) {
        refNodes = null;
    }
    if (refNodes == null) {
        //  create an empty XNodeSet
        KeyIterator ki = (KeyIterator) (m_keyNodes).getContainedIter();
        XPathContext xctxt = ki.getXPathContext();
        refNodes = new XNodeSet(xctxt.getDTMManager()) {

            public void setRoot(int nodeHandle, Object environment) {
            // Root cannot be set on non-iterated node sets. Ignore it.
            }
        };
        refNodes.reset();
    }
    return refNodes;
}

Example 17 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class AxesWalker method setRoot.

/**
   * Set the root node of the TreeWalker.
   * (Not part of the DOM2 TreeWalker interface).
   *
   * @param root The context node of this step.
   */
public void setRoot(int root) {
    // %OPT% Get this directly from the lpi.
    XPathContext xctxt = wi().getXPathContext();
    m_dtm = xctxt.getDTM(root);
    m_traverser = m_dtm.getAxisTraverser(m_axis);
    m_isFresh = true;
    m_foundLast = false;
    m_root = root;
    m_currentNode = root;
    if (DTM.NULL == root) {
        throw new RuntimeException(//"\n !!!! Error! Setting the root of a walker to null!!!");
        XSLMessages.createXPATHMessage(XPATHErrorResources.ER_SETTING_WALKER_ROOT_TO_NULL, null));
    }
    resetProximityPositions();
}

Example 18 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class NodeSequence method setRoot.

/**
   * @see DTMIterator#setRoot(int, Object)
   */
public void setRoot(int nodeHandle, Object environment) {
    if (null != m_iter) {
        XPathContext xctxt = (XPathContext) environment;
        m_dtmMgr = xctxt.getDTMManager();
        m_iter.setRoot(nodeHandle, environment);
        if (!m_iter.isDocOrdered()) {
            if (!hasCache())
                setShouldCacheNodes(true);
            runTo(-1);
            m_next = 0;
        }
    } else
        assertion(false, "Can not setRoot on a non-iterated NodeSequence!");
}

Example 19 with XPathContext

use of org.apache.xpath.XPathContext in project robovm by robovm.

the class OneStepIterator method getProximityPosition.

/**
   * Get the current sub-context position.  In order to do the
   * reverse axes count, for the moment this re-searches the axes
   * up to the predicate.  An optimization on this is to cache
   * the nodes searched, but, for the moment, this case is probably
   * rare enough that the added complexity isn't worth it.
   *
   * @param predicateIndex The predicate index of the proximity position.
   *
   * @return The pridicate index, or -1.
   */
protected int getProximityPosition(int predicateIndex) {
    if (!isReverseAxes())
        return super.getProximityPosition(predicateIndex);
    // -sb
    if (predicateIndex < 0)
        return -1;
    if (m_proximityPositions[predicateIndex] <= 0) {
        XPathContext xctxt = getXPathContext();
        try {
            OneStepIterator clone = (OneStepIterator) this.clone();
            int root = getRoot();
            xctxt.pushCurrentNode(root);
            clone.setRoot(root, xctxt);
            // clone.setPredicateCount(predicateIndex);
            clone.m_predCount = predicateIndex;
            // Count 'em all
            int count = 1;
            int next;
            while (DTM.NULL != (next = clone.nextNode())) {
                count++;
            }
            m_proximityPositions[predicateIndex] += count;
        } catch (CloneNotSupportedException cnse) {
        // can't happen
        } finally {
            xctxt.popCurrentNode();
        }
    }
    return m_proximityPositions[predicateIndex];
}

Example 20 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class UnionChildIterator method acceptNode.

/**
   * Test whether a specified node is visible in the logical view of a
   * TreeWalker or NodeIterator. This function will be called by the
   * implementation of TreeWalker and NodeIterator; it is not intended to
   * be called directly from user code.
   * @param n  The node to check to see if it passes the filter or not.
   * @return  a constant to determine whether the node is accepted,
   *   rejected, or skipped, as defined  above .
   */
public short acceptNode(int n) {
    XPathContext xctxt = getXPathContext();
    try {
        xctxt.pushCurrentNode(n);
        for (int i = 0; i < m_nodeTests.length; i++) {
            PredicatedNodeTest pnt = m_nodeTests[i];
            XObject score = pnt.execute(xctxt, n);
            if (score != NodeTest.SCORE_NONE) {
                // Note that we are assuming there are no positional predicates!
                if (pnt.getPredicateCount() > 0) {
                    if (pnt.executePredicates(n, xctxt))
                        return DTMIterator.FILTER_ACCEPT;
                } else
                    return DTMIterator.FILTER_ACCEPT;
            }
        }
    } catch (javax.xml.transform.TransformerException se) {
        // TODO: Fix this.
        throw new RuntimeException(se.getMessage());
    } finally {
        xctxt.popCurrentNode();
    }
    return DTMIterator.FILTER_SKIP;
}