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

Example 61 with XPathContext

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

the class ElemCallTemplate method execute.

/**
   * Invoke a named template.
   * @see <a href="http://www.w3.org/TR/xslt#named-templates">named-templates in XSLT Specification</a>
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    if (null != m_template) {
        XPathContext xctxt = transformer.getXPathContext();
        VariableStack vars = xctxt.getVarStack();
        int thisframe = vars.getStackFrame();
        int nextFrame = vars.link(m_template.m_frameSize);
        // so that the default param evaluation will work correctly.
        if (m_template.m_inArgsSize > 0) {
            vars.clearLocalSlots(0, m_template.m_inArgsSize);
            if (null != m_paramElems) {
                int currentNode = xctxt.getCurrentNode();
                vars.setStackFrame(thisframe);
                int size = m_paramElems.length;
                for (int i = 0; i < size; i++) {
                    ElemWithParam ewp = m_paramElems[i];
                    if (ewp.m_index >= 0) {
                        XObject obj = ewp.getValue(transformer, currentNode);
                        // Note here that the index for ElemWithParam must have been
                        // statically made relative to the xsl:template being called, 
                        // NOT this xsl:template.
                        vars.setLocalVariable(ewp.m_index, obj, nextFrame);
                    }
                }
                vars.setStackFrame(nextFrame);
            }
        }
        SourceLocator savedLocator = xctxt.getSAXLocator();
        try {
            xctxt.setSAXLocator(m_template);
            // template.executeChildTemplates(transformer, sourceNode, mode, true);
            transformer.pushElemTemplateElement(m_template);
            m_template.execute(transformer);
        } finally {
            transformer.popElemTemplateElement();
            xctxt.setSAXLocator(savedLocator);
            // When we entered this function, the current 
            // frame buffer (cfb) index in the variable stack may 
            // have been manually set.  If we just call 
            // unlink(), however, it will restore the cfb to the 
            // previous link index from the link stack, rather than 
            // the manually set cfb.  So, 
            // the only safe solution is to restore it back 
            // to the same position it was on entry, since we're 
            // really not working in a stack context here. (Bug4218)
            vars.unlink(thisframe);
        }
    } else {
        transformer.getMsgMgr().error(this, XSLTErrorResources.ER_TEMPLATE_NOT_FOUND, //"Could not find template named: '"+templateName+"'");
        new Object[] { m_templateName });
    }
}

Example 62 with XPathContext

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

the class ElemElement method execute.

/**
   * Create an element in the result tree.
   * The xsl:element element allows an element to be created with a
   * computed name. The expanded-name of the element to be created
   * is specified by a required name attribute and an optional namespace
   * attribute. The content of the xsl:element element is a template
   * for the attributes and children of the created element.
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    SerializationHandler rhandler = transformer.getSerializationHandler();
    XPathContext xctxt = transformer.getXPathContext();
    int sourceNode = xctxt.getCurrentNode();
    String nodeName = m_name_avt == null ? null : m_name_avt.evaluate(xctxt, sourceNode, this);
    String prefix = null;
    String nodeNamespace = "";
    // Only validate if an AVT was used.
    if ((nodeName != null) && (!m_name_avt.isSimple()) && (!XML11Char.isXML11ValidQName(nodeName))) {
        transformer.getMsgMgr().warn(this, XSLTErrorResources.WG_ILLEGAL_ATTRIBUTE_VALUE, new Object[] { Constants.ATTRNAME_NAME, nodeName });
        nodeName = null;
    } else if (nodeName != null) {
        prefix = QName.getPrefixPart(nodeName);
        if (null != m_namespace_avt) {
            nodeNamespace = m_namespace_avt.evaluate(xctxt, sourceNode, this);
            if (null == nodeNamespace || (prefix != null && prefix.length() > 0 && nodeNamespace.length() == 0))
                transformer.getMsgMgr().error(this, XSLTErrorResources.ER_NULL_URI_NAMESPACE);
            else {
                // Determine the actual prefix that we will use for this nodeNamespace
                prefix = resolvePrefix(rhandler, prefix, nodeNamespace);
                if (null == prefix)
                    prefix = "";
                if (prefix.length() > 0)
                    nodeName = (prefix + ":" + QName.getLocalPart(nodeName));
                else
                    nodeName = QName.getLocalPart(nodeName);
            }
        } else // No namespace attribute was supplied. Use the namespace declarations
        // currently in effect for the xsl:element element.
        {
            try {
                // Maybe temporary, until I get this worked out.  test: axes59
                nodeNamespace = getNamespaceForPrefix(prefix);
                if ((null == nodeNamespace) && (prefix.length() == 0))
                    nodeNamespace = "";
                else if (null == nodeNamespace) {
                    transformer.getMsgMgr().warn(this, XSLTErrorResources.WG_COULD_NOT_RESOLVE_PREFIX, new Object[] { prefix });
                    nodeName = null;
                }
            } catch (Exception ex) {
                transformer.getMsgMgr().warn(this, XSLTErrorResources.WG_COULD_NOT_RESOLVE_PREFIX, new Object[] { prefix });
                nodeName = null;
            }
        }
    }
    constructNode(nodeName, prefix, nodeNamespace, transformer);
}

Example 63 with XPathContext

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

the class ElemExsltFuncResult method execute.

/**
   * Generate the EXSLT function return value, and assign it to the variable
   * index slot assigned for it in ElemExsltFunction compose().
   * 
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    XPathContext context = transformer.getXPathContext();
    // in the owner ElemExsltFunction execute().
    if (transformer.currentFuncResultSeen()) {
        throw new TransformerException("An EXSLT function cannot set more than one result!");
    }
    int sourceNode = context.getCurrentNode();
    // Set the return value;
    XObject var = getValue(transformer, sourceNode);
    transformer.popCurrentFuncResult();
    transformer.pushCurrentFuncResult(var);
}

Example 64 with XPathContext

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

the class ElemForEach method transformSelectedNodes.

/**
   * Perform a query if needed, and call transformNode for each child.
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException Thrown in a variety of circumstances.
   * @xsl.usage advanced
   */
public void transformSelectedNodes(TransformerImpl transformer) throws TransformerException {
    final XPathContext xctxt = transformer.getXPathContext();
    final int sourceNode = xctxt.getCurrentNode();
    DTMIterator sourceNodes = m_selectExpression.asIterator(xctxt, sourceNode);
    try {
        final Vector keys = (m_sortElems == null) ? null : transformer.processSortKeys(this, sourceNode);
        // Sort if we need to.
        if (null != keys)
            sourceNodes = sortNodes(xctxt, keys, sourceNodes);
        xctxt.pushCurrentNode(DTM.NULL);
        IntStack currentNodes = xctxt.getCurrentNodeStack();
        xctxt.pushCurrentExpressionNode(DTM.NULL);
        IntStack currentExpressionNodes = xctxt.getCurrentExpressionNodeStack();
        xctxt.pushSAXLocatorNull();
        xctxt.pushContextNodeList(sourceNodes);
        transformer.pushElemTemplateElement(null);
        // pushParams(transformer, xctxt);
        // Should be able to get this from the iterator but there must be a bug.
        DTM dtm = xctxt.getDTM(sourceNode);
        int docID = sourceNode & DTMManager.IDENT_DTM_DEFAULT;
        int child;
        while (DTM.NULL != (child = sourceNodes.nextNode())) {
            currentNodes.setTop(child);
            currentExpressionNodes.setTop(child);
            if ((child & DTMManager.IDENT_DTM_DEFAULT) != docID) {
                dtm = xctxt.getDTM(child);
                docID = child & DTMManager.IDENT_DTM_DEFAULT;
            }
            //final int exNodeType = dtm.getExpandedTypeID(child);
            final int nodeType = dtm.getNodeType(child);
            // each of them.
            for (ElemTemplateElement t = this.m_firstChild; t != null; t = t.m_nextSibling) {
                xctxt.setSAXLocator(t);
                transformer.setCurrentElement(t);
                t.execute(transformer);
            }
            // FuncDocument and here.
            if (m_doc_cache_off) {
                if (DEBUG)
                    System.out.println("JJK***** CACHE RELEASE *****\n" + "\tdtm=" + dtm.getDocumentBaseURI());
                // NOTE: This will work because this is _NOT_ a shared DTM, and thus has
                // only a single Document node. If it could ever be an RTF or other
                // shared DTM, this would require substantial rework.
                xctxt.getSourceTreeManager().removeDocumentFromCache(dtm.getDocument());
                xctxt.release(dtm, false);
            }
        }
    } finally {
        xctxt.popSAXLocator();
        xctxt.popContextNodeList();
        transformer.popElemTemplateElement();
        xctxt.popCurrentExpressionNode();
        xctxt.popCurrentNode();
        sourceNodes.detach();
    }
}

Example 65 with XPathContext

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

the class PredicatedNodeTest method acceptNode.

//=============== NodeFilter Implementation ===============
/**
   *  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 = m_lpi.getXPathContext();
    try {
        xctxt.pushCurrentNode(n);
        XObject score = execute(xctxt, n);
        // System.out.println("\n::acceptNode - score: "+score.num()+"::");
        if (score != NodeTest.SCORE_NONE) {
            if (getPredicateCount() > 0) {
                countProximityPosition(0);
                if (!executePredicates(n, xctxt))
                    return DTMIterator.FILTER_SKIP;
            }
            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;
}