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

Example 1 with XNodeSet

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

the class Variable method execute.

/**
   * Dereference the variable, and return the reference value.  Note that lazy 
   * evaluation will occur.  If a variable within scope is not found, a warning 
   * will be sent to the error listener, and an empty nodeset will be returned.
   *
   *
   * @param xctxt The runtime execution context.
   *
   * @return The evaluated variable, or an empty nodeset if not found.
   *
   * @throws javax.xml.transform.TransformerException
   */
public XObject execute(XPathContext xctxt, boolean destructiveOK) throws javax.xml.transform.TransformerException {
    org.apache.xml.utils.PrefixResolver xprefixResolver = xctxt.getNamespaceContext();
    XObject result;
    // XObject result = xctxt.getVariable(m_qname);
    if (m_fixUpWasCalled) {
        if (m_isGlobal)
            result = xctxt.getVarStack().getGlobalVariable(xctxt, m_index, destructiveOK);
        else
            result = xctxt.getVarStack().getLocalVariable(xctxt, m_index, destructiveOK);
    } else {
        result = xctxt.getVarStack().getVariableOrParam(xctxt, m_qname);
    }
    if (null == result) {
        // This should now never happen...
        warn(xctxt, XPATHErrorResources.WG_ILLEGAL_VARIABLE_REFERENCE, //"VariableReference given for variable out "+
        new Object[] { m_qname.getLocalPart() });
        //      (new RuntimeException()).printStackTrace();
        //      error(xctxt, XPATHErrorResources.ER_COULDNOT_GET_VAR_NAMED,
        //            new Object[]{ m_qname.getLocalPart() });  //"Could not get variable named "+varName);
        result = new XNodeSet(xctxt.getDTMManager());
    }
    return result;
//    }
//    else
//    {
//      // Hack city... big time.  This is needed to evaluate xpaths from extensions, 
//      // pending some bright light going off in my head.  Some sort of callback?
//      synchronized(this)
//      {
//      	org.apache.xalan.templates.ElemVariable vvar= getElemVariable();
//      	if(null != vvar)
//      	{
//          m_index = vvar.getIndex();
//          m_isGlobal = vvar.getIsTopLevel();
//          m_fixUpWasCalled = true;
//          return execute(xctxt);
//      	}
//      }
//      throw new javax.xml.transform.TransformerException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_VAR_NOT_RESOLVABLE, new Object[]{m_qname.toString()})); //"Variable not resolvable: "+m_qname);
//    }
}

Example 2 with XNodeSet

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

the class FuncDocument 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 {
    int context = xctxt.getCurrentNode();
    DTM dtm = xctxt.getDTM(context);
    int docContext = dtm.getDocumentRoot(context);
    XObject arg = (XObject) this.getArg0().execute(xctxt);
    String base = "";
    Expression arg1Expr = this.getArg1();
    if (null != arg1Expr) {
        // The URI reference may be relative. The base URI (see [3.2 Base URI]) 
        // of the node in the second argument node-set that is first in document 
        // order is used as the base URI for resolving the 
        // relative URI into an absolute URI. 
        XObject arg2 = arg1Expr.execute(xctxt);
        if (XObject.CLASS_NODESET == arg2.getType()) {
            int baseNode = arg2.iter().nextNode();
            if (baseNode == DTM.NULL) {
                // See http://www.w3.org/1999/11/REC-xslt-19991116-errata#E14.
                // If the second argument is an empty nodeset, this is an error.
                // The processor can recover by returning an empty nodeset.
                warn(xctxt, XSLTErrorResources.WG_EMPTY_SECOND_ARG, null);
                XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
                return nodes;
            } else {
                DTM baseDTM = xctxt.getDTM(baseNode);
                base = baseDTM.getDocumentBaseURI();
            }
        // %REVIEW% This doesn't seem to be a problem with the conformance
        // suite, but maybe it's just not doing a good test?
        //        int baseDoc = baseDTM.getDocument();
        //
        //        if (baseDoc == DTM.NULL /* || baseDoc instanceof Stylesheet  -->What to do?? */)
        //        {
        //
        //          // base = ((Stylesheet)baseDoc).getBaseIdentifier();
        //          base = xctxt.getNamespaceContext().getBaseIdentifier();
        //        }
        //        else
        //          base = xctxt.getSourceTreeManager().findURIFromDoc(baseDoc);
        } else {
            //Can not convert other type to a node-set!;
            arg2.iter();
        }
    } else {
        // If the second argument is omitted, then it defaults to 
        // the node in the stylesheet that contains the expression that 
        // includes the call to the document function. Note that a 
        // zero-length URI reference is a reference to the document 
        // relative to which the URI reference is being resolved; thus 
        // document("") refers to the root node of the stylesheet; 
        // the tree representation of the stylesheet is exactly 
        // the same as if the XML document containing the stylesheet 
        // was the initial source document.
        assertion(null != xctxt.getNamespaceContext(), "Namespace context can not be null!");
        base = xctxt.getNamespaceContext().getBaseIdentifier();
    }
    XNodeSet nodes = new XNodeSet(xctxt.getDTMManager());
    NodeSetDTM mnl = nodes.mutableNodeset();
    DTMIterator iterator = (XObject.CLASS_NODESET == arg.getType()) ? arg.iter() : null;
    int pos = DTM.NULL;
    while ((null == iterator) || (DTM.NULL != (pos = iterator.nextNode()))) {
        XMLString ref = (null != iterator) ? xctxt.getDTM(pos).getStringValue(pos) : arg.xstr();
        // member.
        if (null == arg1Expr && DTM.NULL != pos) {
            DTM baseDTM = xctxt.getDTM(pos);
            base = baseDTM.getDocumentBaseURI();
        }
        if (null == ref)
            continue;
        if (DTM.NULL == docContext) {
            //"context does not have an owner document!");
            error(xctxt, XSLTErrorResources.ER_NO_CONTEXT_OWNERDOC, null);
        }
        // From http://www.ics.uci.edu/pub/ietf/uri/rfc1630.txt
        // A partial form can be distinguished from an absolute form in that the
        // latter must have a colon and that colon must occur before any slash
        // characters. Systems not requiring partial forms should not use any
        // unencoded slashes in their naming schemes.  If they do, absolute URIs
        // will still work, but confusion may result.
        int indexOfColon = ref.indexOf(':');
        int indexOfSlash = ref.indexOf('/');
        if ((indexOfColon != -1) && (indexOfSlash != -1) && (indexOfColon < indexOfSlash)) {
            // The url (or filename, for that matter) is absolute.
            base = null;
        }
        int newDoc = getDoc(xctxt, context, ref.toString(), base);
        // nodes.mutableNodeset().addNode(newDoc);  
        if (DTM.NULL != newDoc) {
            // TODO: mnl.addNodeInDocOrder(newDoc, true, xctxt); ??
            if (!mnl.contains(newDoc)) {
                mnl.addElement(newDoc);
            }
        }
        if (null == iterator || newDoc == DTM.NULL)
            break;
    }
    return nodes;
}

Example 3 with XNodeSet

use of org.apache.xpath.objects.XNodeSet 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 4 with XNodeSet

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

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();
        }
    }
}

Example 5 with XNodeSet

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

the class JAXPExtensionsProvider method extFunction.

/**
     * Execute the extension function.
     */
public Object extFunction(String ns, String funcName, Vector argVec, Object methodKey) throws javax.xml.transform.TransformerException {
    try {
        if (funcName == null) {
            String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, new Object[] { "Function Name" });
            throw new NullPointerException(fmsg);
        }
        //Find the XPathFunction corresponding to namespace and funcName
        javax.xml.namespace.QName myQName = new QName(ns, funcName);
        // throw XPathFunctionException
        if (extensionInvocationDisabled) {
            String fmsg = XSLMessages.createXPATHMessage(XPATHErrorResources.ER_EXTENSION_FUNCTION_CANNOT_BE_INVOKED, new Object[] { myQName.toString() });
            throw new XPathFunctionException(fmsg);
        }
        // Assuming user is passing all the needed parameters ( including
        // default values )
        int arity = argVec.size();
        javax.xml.xpath.XPathFunction xpathFunction = resolver.resolveFunction(myQName, arity);
        // not using methodKey
        ArrayList argList = new ArrayList(arity);
        for (int i = 0; i < arity; i++) {
            Object argument = argVec.elementAt(i);
            // Explicitly getting NodeList by using nodelist()
            if (argument instanceof XNodeSet) {
                argList.add(i, ((XNodeSet) argument).nodelist());
            } else if (argument instanceof XObject) {
                Object passedArgument = ((XObject) argument).object();
                argList.add(i, passedArgument);
            } else {
                argList.add(i, argument);
            }
        }
        return (xpathFunction.evaluate(argList));
    } catch (XPathFunctionException xfe) {
        // further execution by throwing WrappedRuntimeException 
        throw new org.apache.xml.utils.WrappedRuntimeException(xfe);
    } catch (Exception e) {
        throw new javax.xml.transform.TransformerException(e);
    }
}