Examples with DTM org.apache.xml.dtm.DTM used on opensource projects

Example 51 with DTM

use of org.apache.xml.dtm.DTM in project j2objc by google.

the class XPath method getMatchScore.

/**
   * Get the match score of the given node.
   *
   * @param xctxt XPath runtime context.
   * @param context The current source tree context node.
   * 
   * @return score, one of {@link #MATCH_SCORE_NODETEST},
   * {@link #MATCH_SCORE_NONE}, {@link #MATCH_SCORE_OTHER}, 
   * or {@link #MATCH_SCORE_QNAME}.
   *
   * @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 = m_mainExp.execute(xctxt);
        if (DEBUG_MATCHES) {
            DTM dtm = xctxt.getDTM(context);
            System.out.println("score: " + score.num() + " for " + dtm.getNodeName(context) + " for xpath " + this.getPatternString());
        }
        return score.num();
    } finally {
        xctxt.popCurrentNode();
        xctxt.popCurrentExpressionNode();
    }
// return XPath.MATCH_SCORE_NONE;
}

Example 52 with DTM

use of org.apache.xml.dtm.DTM 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 53 with DTM

use of org.apache.xml.dtm.DTM in project j2objc by google.

the class ElemNumber method getPreviousNode.

/**
   * Get the previous node to be counted.
   *
   * @param xctxt The XPath runtime state for this.
   * @param pos The current node
   *
   * @return the previous node to be counted.
   *
   * @throws TransformerException
   */
public int getPreviousNode(XPathContext xctxt, int pos) throws TransformerException {
    XPath countMatchPattern = getCountMatchPattern(xctxt, pos);
    DTM dtm = xctxt.getDTM(pos);
    if (Constants.NUMBERLEVEL_ANY == m_level) {
        XPath fromMatchPattern = m_fromMatchPattern;
        // or the top of the tree is found.
        while (DTM.NULL != pos) {
            // Get the previous sibling, if there is no previous sibling, 
            // then count the parent, but if there is a previous sibling, 
            // dive down to the lowest right-hand (last) child of that sibling.
            int next = dtm.getPreviousSibling(pos);
            if (DTM.NULL == next) {
                next = dtm.getParent(pos);
                if ((DTM.NULL != next) && ((((null != fromMatchPattern) && (fromMatchPattern.getMatchScore(xctxt, next) != XPath.MATCH_SCORE_NONE))) || (dtm.getNodeType(next) == DTM.DOCUMENT_NODE))) {
                    // return null from function.
                    pos = DTM.NULL;
                    // from while loop
                    break;
                }
            } else {
                // dive down to the lowest right child.
                int child = next;
                while (DTM.NULL != child) {
                    child = dtm.getLastChild(next);
                    if (DTM.NULL != child)
                        next = child;
                }
            }
            pos = next;
            if ((DTM.NULL != pos) && ((null == countMatchPattern) || (countMatchPattern.getMatchScore(xctxt, pos) != XPath.MATCH_SCORE_NONE))) {
                break;
            }
        }
    } else // NUMBERLEVEL_MULTI or NUMBERLEVEL_SINGLE
    {
        while (DTM.NULL != pos) {
            pos = dtm.getPreviousSibling(pos);
            if ((DTM.NULL != pos) && ((null == countMatchPattern) || (countMatchPattern.getMatchScore(xctxt, pos) != XPath.MATCH_SCORE_NONE))) {
                break;
            }
        }
    }
    return pos;
}

Example 54 with DTM

use of org.apache.xml.dtm.DTM in project j2objc by google.

the class KeyTable method getRefsTable.

/**
   * @return lazy initialized refs table associating evaluation of key function
   *         with a XNodeSet
   */
private Hashtable getRefsTable() {
    if (m_refsTable == null) {
        // initial capacity set to a prime number to improve hash performance
        m_refsTable = new Hashtable(89);
        KeyIterator ki = (KeyIterator) (m_keyNodes).getContainedIter();
        XPathContext xctxt = ki.getXPathContext();
        Vector keyDecls = getKeyDeclarations();
        int nKeyDecls = keyDecls.size();
        int currentNode;
        m_keyNodes.reset();
        while (DTM.NULL != (currentNode = m_keyNodes.nextNode())) {
            try {
                for (int keyDeclIdx = 0; keyDeclIdx < nKeyDecls; keyDeclIdx++) {
                    KeyDeclaration keyDeclaration = (KeyDeclaration) keyDecls.elementAt(keyDeclIdx);
                    XObject xuse = keyDeclaration.getUse().execute(xctxt, currentNode, ki.getPrefixResolver());
                    if (xuse.getType() != xuse.CLASS_NODESET) {
                        XMLString exprResult = xuse.xstr();
                        addValueInRefsTable(xctxt, exprResult, currentNode);
                    } else {
                        DTMIterator i = ((XNodeSet) xuse).iterRaw();
                        int currentNodeInUseClause;
                        while (DTM.NULL != (currentNodeInUseClause = i.nextNode())) {
                            DTM dtm = xctxt.getDTM(currentNodeInUseClause);
                            XMLString exprResult = dtm.getStringValue(currentNodeInUseClause);
                            addValueInRefsTable(xctxt, exprResult, currentNode);
                        }
                    }
                }
            } catch (TransformerException te) {
                throw new WrappedRuntimeException(te);
            }
        }
    }
    return m_refsTable;
}

Example 55 with DTM

use of org.apache.xml.dtm.DTM in project j2objc by google.

the class SerializerUtils method outputResultTreeFragment.

/**
     * Given a result tree fragment, walk the tree and
     * output it to the SerializationHandler.
     *
     * @param obj Result tree fragment object
     * @param support XPath context for the result tree fragment
     *
     * @throws org.xml.sax.SAXException
     */
public static void outputResultTreeFragment(SerializationHandler handler, XObject obj, XPathContext support) throws org.xml.sax.SAXException {
    int doc = obj.rtf();
    DTM dtm = support.getDTM(doc);
    if (null != dtm) {
        for (int n = dtm.getFirstChild(doc); DTM.NULL != n; n = dtm.getNextSibling(n)) {
            handler.flushPending();
            // to flush prefixes, will that cause problems ???
            if (dtm.getNodeType(n) == DTM.ELEMENT_NODE && dtm.getNamespaceURI(n) == null)
                handler.startPrefixMapping("", "");
            dtm.dispatchToEvents(n, handler);
        }
    }
}