| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * $Id: ElemAttribute.java 469304 2006-10-30 22:29:47Z minchau $ |
| */ |
| package org.apache.xalan.templates; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xalan.res.XSLTErrorResources; |
| import org.apache.xalan.transformer.TransformerImpl; |
| import org.apache.xml.serializer.NamespaceMappings; |
| import org.apache.xml.serializer.SerializationHandler; |
| import org.apache.xml.utils.QName; |
| import org.apache.xml.utils.XML11Char; |
| |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Implement xsl:attribute. |
| * <pre> |
| * &!ELEMENT xsl:attribute %char-template;> |
| * &!ATTLIST xsl:attribute |
| * name %avt; #REQUIRED |
| * namespace %avt; #IMPLIED |
| * %space-att; |
| * & |
| * </pre> |
| * @see <a href="http://www.w3.org/TR/xslt#creating-attributes">creating-attributes in XSLT Specification</a> |
| * @xsl.usage advanced |
| */ |
| public class ElemAttribute extends ElemElement |
| { |
| static final long serialVersionUID = 8817220961566919187L; |
| |
| /** |
| * Get an int constant identifying the type of element. |
| * @see org.apache.xalan.templates.Constants |
| * |
| * @return The token ID for this element |
| */ |
| public int getXSLToken() |
| { |
| return Constants.ELEMNAME_ATTRIBUTE; |
| } |
| |
| /** |
| * Return the node name. |
| * |
| * @return The element name |
| */ |
| public String getNodeName() |
| { |
| return Constants.ELEMNAME_ATTRIBUTE_STRING; |
| } |
| |
| /** |
| * Create an attribute in the result tree. |
| * @see <a href="http://www.w3.org/TR/xslt#creating-attributes">creating-attributes 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 |
| // { |
| //SerializationHandler rhandler = transformer.getSerializationHandler(); |
| |
| // If they are trying to add an attribute when there isn't an |
| // element pending, it is an error. |
| // I don't think we need this check here because it is checked in |
| // ResultTreeHandler.addAttribute. (is) |
| // if (!rhandler.isElementPending()) |
| // { |
| // // Make sure the trace event is sent. |
| // if (TransformerImpl.S_DEBUG) |
| // transformer.getTraceManager().fireTraceEvent(this); |
| // |
| // XPathContext xctxt = transformer.getXPathContext(); |
| // int sourceNode = xctxt.getCurrentNode(); |
| // String attrName = m_name_avt.evaluate(xctxt, sourceNode, this); |
| // transformer.getMsgMgr().warn(this, |
| // XSLTErrorResources.WG_ILLEGAL_ATTRIBUTE_POSITION, |
| // new Object[]{ attrName }); |
| // |
| // if (TransformerImpl.S_DEBUG) |
| // transformer.getTraceManager().fireTraceEndEvent(this); |
| // return; |
| // |
| // // warn(templateChild, sourceNode, "Trying to add attribute after element child has been added, ignoring..."); |
| // } |
| |
| // super.execute(transformer); |
| |
| // } |
| |
| /** |
| * Resolve the namespace into a prefix. At this level, if no prefix exists, |
| * then return a manufactured prefix. |
| * |
| * @param rhandler The current result tree handler. |
| * @param prefix The probable prefix if already known. |
| * @param nodeNamespace The namespace, which should not be null. |
| * |
| * @return The prefix to be used. |
| */ |
| protected String resolvePrefix(SerializationHandler rhandler, |
| String prefix, String nodeNamespace) |
| throws TransformerException |
| { |
| |
| if (null != prefix && (prefix.length() == 0 || prefix.equals("xmlns"))) |
| { |
| // Since we can't use default namespace, in this case we try and |
| // see if a prefix has already been defined or this namespace. |
| prefix = rhandler.getPrefix(nodeNamespace); |
| |
| // System.out.println("nsPrefix: "+nsPrefix); |
| if (null == prefix || prefix.length() == 0 || prefix.equals("xmlns")) |
| { |
| if(nodeNamespace.length() > 0) |
| { |
| NamespaceMappings prefixMapping = rhandler.getNamespaceMappings(); |
| prefix = prefixMapping.generateNextPrefix(); |
| } |
| else |
| prefix = ""; |
| } |
| } |
| return prefix; |
| } |
| |
| /** |
| * Validate that the node name is good. |
| * |
| * @param nodeName Name of the node being constructed, which may be null. |
| * |
| * @return true if the node name is valid, false otherwise. |
| */ |
| protected boolean validateNodeName(String nodeName) |
| { |
| if(null == nodeName) |
| return false; |
| if(nodeName.equals("xmlns")) |
| return false; |
| return XML11Char.isXML11ValidQName(nodeName); |
| } |
| |
| /** |
| * Construct a node in the result tree. This method is overloaded by |
| * xsl:attribute. At this class level, this method creates an element. |
| * |
| * @param nodeName The name of the node, which may be null. |
| * @param prefix The prefix for the namespace, which may be null. |
| * @param nodeNamespace The namespace of the node, which may be null. |
| * @param transformer non-null reference to the the current transform-time state. |
| * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>. |
| * @param mode reference, which may be null, to the <a href="http://www.w3.org/TR/xslt#modes">current mode</a>. |
| * |
| * @throws TransformerException |
| */ |
| void constructNode( |
| String nodeName, String prefix, String nodeNamespace, TransformerImpl transformer) |
| throws TransformerException |
| { |
| |
| if(null != nodeName && nodeName.length() > 0) |
| { |
| SerializationHandler rhandler = transformer.getSerializationHandler(); |
| |
| // Evaluate the value of this attribute |
| String val = transformer.transformToString(this); |
| try |
| { |
| // Let the result tree handler add the attribute and its String value. |
| String localName = QName.getLocalPart(nodeName); |
| if(prefix != null && prefix.length() > 0){ |
| rhandler.addAttribute(nodeNamespace, localName, nodeName, "CDATA", val, true); |
| }else{ |
| rhandler.addAttribute("", localName, nodeName, "CDATA", val, true); |
| } |
| } |
| catch (SAXException e) |
| { |
| } |
| } |
| } |
| |
| |
| /** |
| * Add a child to the child list. |
| * <!ELEMENT xsl:attribute %char-template;> |
| * <!ATTLIST xsl:attribute |
| * name %avt; #REQUIRED |
| * namespace %avt; #IMPLIED |
| * %space-att; |
| * > |
| * |
| * @param newChild Child to append to the list of this node's children |
| * |
| * @return The node we just appended to the children list |
| * |
| * @throws DOMException |
| */ |
| public ElemTemplateElement appendChild(ElemTemplateElement newChild) |
| { |
| |
| int type = ((ElemTemplateElement) newChild).getXSLToken(); |
| |
| switch (type) |
| { |
| |
| // char-instructions |
| case Constants.ELEMNAME_TEXTLITERALRESULT : |
| case Constants.ELEMNAME_APPLY_TEMPLATES : |
| case Constants.ELEMNAME_APPLY_IMPORTS : |
| case Constants.ELEMNAME_CALLTEMPLATE : |
| case Constants.ELEMNAME_FOREACH : |
| case Constants.ELEMNAME_VALUEOF : |
| case Constants.ELEMNAME_COPY_OF : |
| case Constants.ELEMNAME_NUMBER : |
| case Constants.ELEMNAME_CHOOSE : |
| case Constants.ELEMNAME_IF : |
| case Constants.ELEMNAME_TEXT : |
| case Constants.ELEMNAME_COPY : |
| case Constants.ELEMNAME_VARIABLE : |
| case Constants.ELEMNAME_MESSAGE : |
| |
| // instructions |
| // case Constants.ELEMNAME_PI: |
| // case Constants.ELEMNAME_COMMENT: |
| // case Constants.ELEMNAME_ELEMENT: |
| // case Constants.ELEMNAME_ATTRIBUTE: |
| break; |
| default : |
| error(XSLTErrorResources.ER_CANNOT_ADD, |
| new Object[]{ newChild.getNodeName(), |
| this.getNodeName() }); //"Can not add " +((ElemTemplateElement)newChild).m_elemName + |
| |
| //" to " + this.m_elemName); |
| } |
| |
| return super.appendChild(newChild); |
| } |
| /** |
| * @see ElemElement#setName(AVT) |
| */ |
| public void setName(AVT v) { |
| if (v.isSimple()) |
| { |
| if (v.getSimpleString().equals("xmlns")) |
| { |
| throw new IllegalArgumentException(); |
| } |
| } |
| super.setName(v); |
| } |
| |
| } |
