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

Example 21 with XNodeSet

use of org.apache.xpath.objects.XNodeSet in project j2objc by google.

the class LocPathIterator method asIterator.

/**
   * Given an select expression and a context, evaluate the XPath
   * and return the resulting iterator.
   * 
   * @param xctxt The execution context.
   * @param contextNode The node that "." expresses.
   * @throws TransformerException thrown if the active ProblemListener decides
   * the error condition is severe enough to halt processing.
   *
   * @throws javax.xml.transform.TransformerException
   * @xsl.usage experimental
   */
public DTMIterator asIterator(XPathContext xctxt, int contextNode) throws javax.xml.transform.TransformerException {
    XNodeSet iter = new XNodeSet((LocPathIterator) m_clones.getInstance());
    iter.setRoot(contextNode, xctxt);
    return iter;
}

Example 22 with XNodeSet

use of org.apache.xpath.objects.XNodeSet in project j2objc by google.

the class FilterExprIteratorSimple method executeFilterExpr.

/**
   * Execute the expression.  Meant for reuse by other FilterExpr iterators 
   * that are not derived from this object.
   */
public static XNodeSet executeFilterExpr(int context, XPathContext xctxt, PrefixResolver prefixResolver, boolean isTopLevel, int stackFrame, Expression expr) throws org.apache.xml.utils.WrappedRuntimeException {
    PrefixResolver savedResolver = xctxt.getNamespaceContext();
    XNodeSet result = null;
    try {
        xctxt.pushCurrentNode(context);
        xctxt.setNamespaceContext(prefixResolver);
        if (isTopLevel) {
            // System.out.println("calling m_expr.execute(getXPathContext())");
            VariableStack vars = xctxt.getVarStack();
            // These three statements need to be combined into one operation.
            int savedStart = vars.getStackFrame();
            vars.setStackFrame(stackFrame);
            result = (org.apache.xpath.objects.XNodeSet) expr.execute(xctxt);
            result.setShouldCacheNodes(true);
            // These two statements need to be combined into one operation.
            vars.setStackFrame(savedStart);
        } else
            result = (org.apache.xpath.objects.XNodeSet) expr.execute(xctxt);
    } catch (javax.xml.transform.TransformerException se) {
        // TODO: Fix...
        throw new org.apache.xml.utils.WrappedRuntimeException(se);
    } finally {
        xctxt.popCurrentNode();
        xctxt.setNamespaceContext(savedResolver);
    }
    return result;
}

Example 23 with XNodeSet

use of org.apache.xpath.objects.XNodeSet in project j2objc by google.

the class Expression method asIteratorRaw.

/**
   * Given an select expression and a context, evaluate the XPath
   * and return the resulting iterator, but do not clone.
   *
   * @param xctxt The execution context.
   * @param contextNode The node that "." expresses.
   *
   *
   * @return A valid DTMIterator.
   * @throws TransformerException thrown if the active ProblemListener decides
   * the error condition is severe enough to halt processing.
   *
   * @throws javax.xml.transform.TransformerException
   * @xsl.usage experimental
   */
public DTMIterator asIteratorRaw(XPathContext xctxt, int contextNode) throws javax.xml.transform.TransformerException {
    try {
        xctxt.pushCurrentNodeAndExpression(contextNode, contextNode);
        XNodeSet nodeset = (XNodeSet) execute(xctxt);
        return nodeset.iterRaw();
    } finally {
        xctxt.popCurrentNodeAndExpression();
    }
}

Example 24 with XNodeSet

use of org.apache.xpath.objects.XNodeSet in project j2objc by google.

the class FuncKey method execute.

/**
   * Execute the function.  The function must return
   * a valid object.
   * @param xctxt The current execution context.
   * @return A valid XObject.
   *
   * @throws javax.xml.transform.TransformerException
   */
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
    // TransformerImpl transformer = (TransformerImpl)xctxt;
    TransformerImpl transformer = (TransformerImpl) xctxt.getOwnerObject();
    XNodeSet nodes = null;
    int context = xctxt.getCurrentNode();
    DTM dtm = xctxt.getDTM(context);
    int docContext = dtm.getDocumentRoot(context);
    if (DTM.NULL == docContext) {
    // path.error(context, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC); //"context does not have an owner document!");
    }
    String xkeyname = getArg0().execute(xctxt).str();
    QName keyname = new QName(xkeyname, xctxt.getNamespaceContext());
    XObject arg = getArg1().execute(xctxt);
    boolean argIsNodeSetDTM = (XObject.CLASS_NODESET == arg.getType());
    KeyManager kmgr = transformer.getKeyManager();
    // Don't bother with nodeset logic if the thing is only one node.
    if (argIsNodeSetDTM) {
        XNodeSet ns = (XNodeSet) arg;
        ns.setShouldCacheNodes(true);
        int len = ns.getLength();
        if (len <= 1)
            argIsNodeSetDTM = false;
    }
    if (argIsNodeSetDTM) {
        Hashtable usedrefs = null;
        DTMIterator ni = arg.iter();
        int pos;
        UnionPathIterator upi = new UnionPathIterator();
        upi.exprSetParent(this);
        while (DTM.NULL != (pos = ni.nextNode())) {
            dtm = xctxt.getDTM(pos);
            XMLString ref = dtm.getStringValue(pos);
            if (null == ref)
                continue;
            if (null == usedrefs)
                usedrefs = new Hashtable();
            if (usedrefs.get(ref) != null) {
                // We already have 'em.
                continue;
            } else {
                // ISTRUE being used as a dummy value.
                usedrefs.put(ref, ISTRUE);
            }
            XNodeSet nl = kmgr.getNodeSetDTMByKey(xctxt, docContext, keyname, ref, xctxt.getNamespaceContext());
            nl.setRoot(xctxt.getCurrentNode(), xctxt);
            //        try
            //        {
            upi.addIterator(nl);
        //        }
        //        catch(CloneNotSupportedException cnse)
        //        {
        //          // will never happen.
        //        }
        //mnodeset.addNodesInDocOrder(nl, xctxt); needed??
        }
        int current = xctxt.getCurrentNode();
        upi.setRoot(current, xctxt);
        nodes = new XNodeSet(upi);
    } else {
        XMLString ref = arg.xstr();
        nodes = kmgr.getNodeSetDTMByKey(xctxt, docContext, keyname, ref, xctxt.getNamespaceContext());
        nodes.setRoot(xctxt.getCurrentNode(), xctxt);
    }
    return nodes;
}

Example 25 with XNodeSet

use of org.apache.xpath.objects.XNodeSet in project j2objc by google.

the class KeyTable method addValueInRefsTable.

/**
   * Add an association between a ref and a node in the m_refsTable.
   * Requires that m_refsTable != null
   * @param xctxt XPath context
   * @param ref the value of the use clause of the current key for the given node
   * @param node the node to reference
   */
private void addValueInRefsTable(XPathContext xctxt, XMLString ref, int node) {
    XNodeSet nodes = (XNodeSet) m_refsTable.get(ref);
    if (nodes == null) {
        nodes = new XNodeSet(node, xctxt.getDTMManager());
        nodes.nextNode();
        m_refsTable.put(ref, nodes);
    } else {
        // easily compare node against the current node.
        if (nodes.getCurrentNode() != node) {
            nodes.mutableNodeset().addNode(node);
            nodes.nextNode();
        }
    }
}