Examples with XObject org.apache.xpath.objects.XObject used on opensource projects

Example 1 with XObject

use of org.apache.xpath.objects.XObject in project robovm by robovm.

the class PredicatedNodeTest method executePredicates.

/**
   * Process the predicates.
   *
   * @param context The current context node.
   * @param xctxt The XPath runtime context.
   *
   * @return the result of executing the predicate expressions.
   *
   * @throws javax.xml.transform.TransformerException
   */
boolean executePredicates(int context, XPathContext xctxt) throws javax.xml.transform.TransformerException {
    int nPredicates = getPredicateCount();
    // System.out.println("nPredicates: "+nPredicates);
    if (nPredicates == 0)
        return true;
    PrefixResolver savedResolver = xctxt.getNamespaceContext();
    try {
        m_predicateIndex = 0;
        xctxt.pushSubContextList(this);
        xctxt.pushNamespaceContext(m_lpi.getPrefixResolver());
        xctxt.pushCurrentNode(context);
        for (int i = 0; i < nPredicates; i++) {
            // System.out.println("Executing predicate expression - waiting count: "+m_lpi.getWaitingCount());
            XObject pred = m_predicates[i].execute(xctxt);
            // System.out.println("pred.getType(): "+pred.getType());
            if (XObject.CLASS_NUMBER == pred.getType()) {
                if (DEBUG_PREDICATECOUNTING) {
                    System.out.flush();
                    System.out.println("\n===== start predicate count ========");
                    System.out.println("m_predicateIndex: " + m_predicateIndex);
                    // System.out.println("getProximityPosition(m_predicateIndex): "
                    //                   + getProximityPosition(m_predicateIndex));
                    System.out.println("pred.num(): " + pred.num());
                }
                int proxPos = this.getProximityPosition(m_predicateIndex);
                int predIndex = (int) pred.num();
                if (proxPos != predIndex) {
                    if (DEBUG_PREDICATECOUNTING) {
                        System.out.println("\nnode context: " + nodeToString(context));
                        System.out.println("index predicate is false: " + proxPos);
                        System.out.println("\n===== end predicate count ========");
                    }
                    return false;
                } else if (DEBUG_PREDICATECOUNTING) {
                    System.out.println("\nnode context: " + nodeToString(context));
                    System.out.println("index predicate is true: " + proxPos);
                    System.out.println("\n===== end predicate count ========");
                }
                // only sets m_foundLast if on the last predicate
                if (m_predicates[i].isStableNumber() && i == nPredicates - 1) {
                    m_foundLast = true;
                }
            } else if (!pred.bool())
                return false;
            countProximityPosition(++m_predicateIndex);
        }
    } finally {
        xctxt.popCurrentNode();
        xctxt.popNamespaceContext();
        xctxt.popSubContextList();
        m_predicateIndex = -1;
    }
    return true;
}

Example 2 with XObject

use of org.apache.xpath.objects.XObject in project robovm by robovm.

the class StepPattern method getProximityPosition.

/**
   * Get the proximity position index of the current node based on this
   * node test.
   *
   *
   * @param xctxt XPath runtime context.
   * @param predPos Which predicate we're evaluating of foo[1][2][3].
   * @param findLast If true, don't terminate when the context node is found.
   *
   * @return the proximity position index of the current node based on the
   *         node test.
   */
private final int getProximityPosition(XPathContext xctxt, int predPos, boolean findLast) {
    int pos = 0;
    int context = xctxt.getCurrentNode();
    DTM dtm = xctxt.getDTM(context);
    int parent = dtm.getParent(context);
    try {
        DTMAxisTraverser traverser = dtm.getAxisTraverser(Axis.CHILD);
        for (int child = traverser.first(parent); DTM.NULL != child; child = traverser.next(parent, child)) {
            try {
                xctxt.pushCurrentNode(child);
                if (NodeTest.SCORE_NONE != super.execute(xctxt, child)) {
                    boolean pass = true;
                    try {
                        xctxt.pushSubContextList(this);
                        for (int i = 0; i < predPos; i++) {
                            xctxt.pushPredicatePos(i);
                            try {
                                XObject pred = m_predicates[i].execute(xctxt);
                                try {
                                    if (XObject.CLASS_NUMBER == pred.getType()) {
                                        if ((pos + 1) != (int) pred.numWithSideEffects()) {
                                            pass = false;
                                            break;
                                        }
                                    } else if (!pred.boolWithSideEffects()) {
                                        pass = false;
                                        break;
                                    }
                                } finally {
                                    pred.detach();
                                }
                            } finally {
                                xctxt.popPredicatePos();
                            }
                        }
                    } finally {
                        xctxt.popSubContextList();
                    }
                    if (pass)
                        pos++;
                    if (!findLast && child == context) {
                        return pos;
                    }
                }
            } finally {
                xctxt.popCurrentNode();
            }
        }
    } catch (javax.xml.transform.TransformerException se) {
        // TODO: should keep throw sax exception...
        throw new java.lang.RuntimeException(se.getMessage());
    }
    return pos;
}

Example 3 with XObject

use of org.apache.xpath.objects.XObject in project robovm by robovm.

the class StepPattern method executeRelativePathPattern.

/**
   * Execute the match pattern step relative to another step.
   *
   *
   * @param xctxt The XPath runtime context.
   * @param dtm The DTM of the current node.
   * @param currentNode The current node context.
   *
   * @return {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
   *
   * @throws javax.xml.transform.TransformerException
   */
protected final XObject executeRelativePathPattern(XPathContext xctxt, DTM dtm, int currentNode) throws javax.xml.transform.TransformerException {
    XObject score = NodeTest.SCORE_NONE;
    int context = currentNode;
    DTMAxisTraverser traverser;
    traverser = dtm.getAxisTraverser(m_axis);
    for (int relative = traverser.first(context); DTM.NULL != relative; relative = traverser.next(context, relative)) {
        try {
            xctxt.pushCurrentNode(relative);
            score = execute(xctxt);
            if (score != NodeTest.SCORE_NONE)
                break;
        } finally {
            xctxt.popCurrentNode();
        }
    }
    return score;
}

Example 4 with XObject

use of org.apache.xpath.objects.XObject in project robovm by robovm.

the class StepPattern method getMatchScore.

/**
   * Get the match score of the given node.
   *
   * @param xctxt The XPath runtime context.
   * @param context The node to be tested.
   *
   * @return {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
   *
   * @throws javax.xml.transform.TransformerException
   */
public double getMatchScore(XPathContext xctxt, int context) throws javax.xml.transform.TransformerException {
    xctxt.pushCurrentNode(context);
    xctxt.pushCurrentExpressionNode(context);
    try {
        XObject score = execute(xctxt);
        return score.num();
    } finally {
        xctxt.popCurrentNode();
        xctxt.popCurrentExpressionNode();
    }
// return XPath.MATCH_SCORE_NONE;
}

Example 5 with XObject

use of org.apache.xpath.objects.XObject in project robovm by robovm.

the class UnionPattern method execute.

/**
   * Test a node to see if it matches any of the patterns in the union.
   *
   * @param xctxt XPath runtime context.
   *
   * @return {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NONE},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_NSWILD},
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or
   *         {@link org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
   *
   * @throws javax.xml.transform.TransformerException
   */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
    XObject bestScore = null;
    int n = m_patterns.length;
    for (int i = 0; i < n; i++) {
        XObject score = m_patterns[i].execute(xctxt);
        if (score != NodeTest.SCORE_NONE) {
            if (null == bestScore)
                bestScore = score;
            else if (score.num() > bestScore.num())
                bestScore = score;
        }
    }
    if (null == bestScore) {
        bestScore = NodeTest.SCORE_NONE;
    }
    return bestScore;
}