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

Example 51 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class ElemCopyOf method execute.

/**
   * The xsl:copy-of element can be used to insert a result tree
   * fragment into the result tree, without first converting it to
   * a string as xsl:value-of does (see [7.6.1 Generating Text with
   * xsl:value-of]).
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
public void execute(TransformerImpl transformer) throws TransformerException {
    try {
        XPathContext xctxt = transformer.getXPathContext();
        int sourceNode = xctxt.getCurrentNode();
        XObject value = m_selectExpression.execute(xctxt, sourceNode, this);
        SerializationHandler handler = transformer.getSerializationHandler();
        if (null != value) {
            int type = value.getType();
            String s;
            switch(type) {
                case XObject.CLASS_BOOLEAN:
                case XObject.CLASS_NUMBER:
                case XObject.CLASS_STRING:
                    s = value.str();
                    handler.characters(s.toCharArray(), 0, s.length());
                    break;
                case XObject.CLASS_NODESET:
                    // System.out.println(value);
                    DTMIterator nl = value.iter();
                    // Copy the tree.
                    DTMTreeWalker tw = new TreeWalker2Result(transformer, handler);
                    int pos;
                    while (DTM.NULL != (pos = nl.nextNode())) {
                        DTM dtm = xctxt.getDTMManager().getDTM(pos);
                        short t = dtm.getNodeType(pos);
                        // generated, so we need to only walk the child nodes.
                        if (t == DTM.DOCUMENT_NODE) {
                            for (int child = dtm.getFirstChild(pos); child != DTM.NULL; child = dtm.getNextSibling(child)) {
                                tw.traverse(child);
                            }
                        } else if (t == DTM.ATTRIBUTE_NODE) {
                            SerializerUtils.addAttribute(handler, pos);
                        } else {
                            tw.traverse(pos);
                        }
                    }
                    // nl.detach();
                    break;
                case XObject.CLASS_RTREEFRAG:
                    SerializerUtils.outputResultTreeFragment(handler, value, transformer.getXPathContext());
                    break;
                default:
                    s = value.str();
                    handler.characters(s.toCharArray(), 0, s.length());
                    break;
            }
        }
    // I don't think we want this.  -sb
    //  if (transformer.getDebug())
    //  transformer.getTraceManager().fireSelectedEvent(sourceNode, this,
    //  "endSelect", m_selectExpression, value);
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    }
}

Example 52 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

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 53 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

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 54 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class ElemExsltFunction method execute.

public void execute(TransformerImpl transformer, XObject[] args) throws TransformerException {
    XPathContext xctxt = transformer.getXPathContext();
    VariableStack vars = xctxt.getVarStack();
    // Increment the frame bottom of the variable stack by the
    // frame size
    int thisFrame = vars.getStackFrame();
    int nextFrame = vars.link(m_frameSize);
    if (m_inArgsSize < args.length) {
        throw new TransformerException("function called with too many args");
    }
    // have to clear the section of the stack frame that has params.
    if (m_inArgsSize > 0) {
        vars.clearLocalSlots(0, m_inArgsSize);
        if (args.length > 0) {
            vars.setStackFrame(thisFrame);
            NodeList children = this.getChildNodes();
            for (int i = 0; i < args.length; i++) {
                Node child = children.item(i);
                if (children.item(i) instanceof ElemParam) {
                    ElemParam param = (ElemParam) children.item(i);
                    vars.setLocalVariable(param.getIndex(), args[i], nextFrame);
                }
            }
            vars.setStackFrame(nextFrame);
        }
    }
    //  Removed ElemTemplate 'push' and 'pop' of RTFContext, in order to avoid losing the RTF context 
    //  before a value can be returned. ElemExsltFunction operates in the scope of the template that called 
    //  the function.
    //  xctxt.pushRTFContext();
    vars.setStackFrame(nextFrame);
    transformer.executeChildTemplates(this, true);
    // Reset the stack frame after the function call
    vars.unlink(thisFrame);
// Following ElemTemplate 'pop' removed -- see above.
// xctxt.popRTFContext(); 
}

Example 55 with XPathContext

use of org.apache.xpath.XPathContext in project j2objc by google.

the class ElemPI method execute.

/**
   * Create a processing instruction in the result tree.
   * The content of the xsl:processing-instruction element is a
   * template for the string-value of the processing instruction node.
   * @see <a href="http://www.w3.org/TR/xslt#section-Creating-Processing-Instructions">section-Creating-Processing-Instructions 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 {
    XPathContext xctxt = transformer.getXPathContext();
    int sourceNode = xctxt.getCurrentNode();
    String piName = m_name_atv == null ? null : m_name_atv.evaluate(xctxt, sourceNode, this);
    // Ignore processing instruction if name is null
    if (piName == null)
        return;
    if (piName.equalsIgnoreCase("xml")) {
        transformer.getMsgMgr().warn(this, XSLTErrorResources.WG_PROCESSINGINSTRUCTION_NAME_CANT_BE_XML, new Object[] { Constants.ATTRNAME_NAME, piName });
        return;
    } else // Ignore processing instruction, if invalid
    if ((!m_name_atv.isSimple()) && (!XML11Char.isXML11ValidNCName(piName))) {
        transformer.getMsgMgr().warn(this, XSLTErrorResources.WG_PROCESSINGINSTRUCTION_NOTVALID_NCNAME, new Object[] { Constants.ATTRNAME_NAME, piName });
        return;
    }
    // Note the content model is:
    // <!ENTITY % instructions "
    // %char-instructions;
    // | xsl:processing-instruction
    // | xsl:comment
    // | xsl:element
    // | xsl:attribute
    // ">
    String data = transformer.transformToString(this);
    try {
        transformer.getResultTreeHandler().processingInstruction(piName, data);
    } catch (org.xml.sax.SAXException se) {
        throw new TransformerException(se);
    }
}