| /* |
| * 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: ElemElement.java 468643 2006-10-28 06:56:03Z 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.SerializationHandler; |
| import org.apache.xml.utils.QName; |
| import org.apache.xml.utils.XML11Char; |
| import org.apache.xpath.XPathContext; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Implement xsl:element |
| * <pre> |
| * <!ELEMENT xsl:element %template;> |
| * <!ATTLIST xsl:element |
| * name %avt; #REQUIRED |
| * namespace %avt; #IMPLIED |
| * use-attribute-sets %qnames; #IMPLIED |
| * %space-att; |
| * > |
| * </pre> |
| * @see <a href="http://www.w3.org/TR/xslt#section-Creating-Elements-with-xsl:element">XXX in XSLT Specification</a> |
| * @xsl.usage advanced |
| */ |
| public class ElemElement extends ElemUse |
| { |
| static final long serialVersionUID = -324619535592435183L; |
| |
| /** |
| * The name attribute is interpreted as an attribute value template. |
| * It is an error if the string that results from instantiating the |
| * attribute value template is not a QName. |
| * @serial |
| */ |
| protected AVT m_name_avt = null; |
| |
| /** |
| * Set the "name" attribute. |
| * The name attribute is interpreted as an attribute value template. |
| * It is an error if the string that results from instantiating the |
| * attribute value template is not a QName. |
| * |
| * @param v Name attribute to set for this element |
| */ |
| public void setName(AVT v) |
| { |
| m_name_avt = v; |
| } |
| |
| /** |
| * Get the "name" attribute. |
| * The name attribute is interpreted as an attribute value template. |
| * It is an error if the string that results from instantiating the |
| * attribute value template is not a QName. |
| * |
| * @return Name attribute for this element |
| */ |
| public AVT getName() |
| { |
| return m_name_avt; |
| } |
| |
| /** |
| * If the namespace attribute is present, then it also is interpreted |
| * as an attribute value template. The string that results from |
| * instantiating the attribute value template should be a URI reference. |
| * It is not an error if the string is not a syntactically legal URI reference. |
| * @serial |
| */ |
| protected AVT m_namespace_avt = null; |
| |
| /** |
| * Set the "namespace" attribute. |
| * If the namespace attribute is present, then it also is interpreted |
| * as an attribute value template. The string that results from |
| * instantiating the attribute value template should be a URI reference. |
| * It is not an error if the string is not a syntactically legal URI reference. |
| * |
| * @param v NameSpace attribute to set for this element |
| */ |
| public void setNamespace(AVT v) |
| { |
| m_namespace_avt = v; |
| } |
| |
| /** |
| * Get the "namespace" attribute. |
| * If the namespace attribute is present, then it also is interpreted |
| * as an attribute value template. The string that results from |
| * instantiating the attribute value template should be a URI reference. |
| * It is not an error if the string is not a syntactically legal URI reference. |
| * |
| * @return Namespace attribute for this element |
| */ |
| public AVT getNamespace() |
| { |
| return m_namespace_avt; |
| } |
| |
| /** |
| * This function is called after everything else has been |
| * recomposed, and allows the template to set remaining |
| * values that may be based on some other property that |
| * depends on recomposition. |
| */ |
| public void compose(StylesheetRoot sroot) throws TransformerException |
| { |
| super.compose(sroot); |
| |
| StylesheetRoot.ComposeState cstate = sroot.getComposeState(); |
| java.util.Vector vnames = cstate.getVariableNames(); |
| if(null != m_name_avt) |
| m_name_avt.fixupVariables(vnames, cstate.getGlobalsSize()); |
| if(null != m_namespace_avt) |
| m_namespace_avt.fixupVariables(vnames, cstate.getGlobalsSize()); |
| } |
| |
| |
| /** |
| * 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_ELEMENT; |
| } |
| |
| /** |
| * Return the node name. |
| * |
| * @return This element's name |
| */ |
| public String getNodeName() |
| { |
| return Constants.ELEMNAME_ELEMENT_STRING; |
| } |
| |
| /** |
| * Resolve the namespace into a prefix. Meant to be |
| * overidded by elemAttribute if this class is derived. |
| * |
| * @param rhandler The current result tree handler. |
| * @param prefix The probable prefix if already known. |
| * @param nodeNamespace The namespace. |
| * |
| * @return The prefix to be used. |
| */ |
| protected String resolvePrefix(SerializationHandler rhandler, |
| String prefix, String nodeNamespace) |
| throws TransformerException |
| { |
| |
| // if (null != prefix && prefix.length() == 0) |
| // { |
| // String foundPrefix = rhandler.getPrefix(nodeNamespace); |
| // |
| // // System.out.println("nsPrefix: "+nsPrefix); |
| // if (null == foundPrefix) |
| // foundPrefix = ""; |
| // } |
| return prefix; |
| } |
| |
| /** |
| * 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); |
| } |
| } |
| |
| // No namespace attribute was supplied. Use the namespace declarations |
| // currently in effect for the xsl:element element. |
| else |
| { |
| try |
| { |
| // Maybe temporary, until I get this worked out. test: axes59 |
| nodeNamespace = getNamespaceForPrefix(prefix); |
| |
| // If we get back a null nodeNamespace, that means that this prefix could |
| // not be found in the table. This is okay only for a default namespace |
| // that has never been declared. |
| |
| 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); |
| } |
| |
| /** |
| * Construct a node in the result tree. This method is overloaded by |
| * xsl:attribute. At this class level, this method creates an element. |
| * If the node is null, we instantiate only the content of the node in accordance |
| * with section 7.1.2 of the XSLT 1.0 Recommendation. |
| * |
| * @param nodeName The name of the node, which may be <code>null</code>. If <code>null</code>, |
| * only the non-attribute children of this node will be processed. |
| * @param prefix The prefix for the namespace, which may be <code>null</code>. |
| * If not <code>null</code>, this prefix will be mapped and unmapped. |
| * @param nodeNamespace The namespace of the node, which may be not be <code>null</code>. |
| * @param transformer non-null reference to the the current transform-time state. |
| * |
| * @throws TransformerException |
| */ |
| void constructNode( |
| String nodeName, String prefix, String nodeNamespace, TransformerImpl transformer) |
| throws TransformerException |
| { |
| |
| boolean shouldAddAttrs; |
| |
| try |
| { |
| SerializationHandler rhandler = transformer.getResultTreeHandler(); |
| |
| if (null == nodeName) |
| { |
| shouldAddAttrs = false; |
| } |
| else |
| { |
| if (null != prefix) |
| { |
| rhandler.startPrefixMapping(prefix, nodeNamespace, true); |
| } |
| |
| rhandler.startElement(nodeNamespace, QName.getLocalPart(nodeName), |
| nodeName); |
| |
| super.execute(transformer); |
| |
| shouldAddAttrs = true; |
| } |
| |
| transformer.executeChildTemplates(this, shouldAddAttrs); |
| |
| // Now end the element if name was valid |
| if (null != nodeName) |
| { |
| rhandler.endElement(nodeNamespace, QName.getLocalPart(nodeName), |
| nodeName); |
| if (null != prefix) |
| { |
| rhandler.endPrefixMapping(prefix); |
| } |
| } |
| } |
| catch (SAXException se) |
| { |
| throw new TransformerException(se); |
| } |
| } |
| |
| /** |
| * Call the children visitors. |
| * @param visitor The visitor whose appropriate method will be called. |
| */ |
| protected void callChildVisitors(XSLTVisitor visitor, boolean callAttrs) |
| { |
| if(callAttrs) |
| { |
| if(null != m_name_avt) |
| m_name_avt.callVisitors(visitor); |
| |
| if(null != m_namespace_avt) |
| m_namespace_avt.callVisitors(visitor); |
| } |
| |
| super.callChildVisitors(visitor, callAttrs); |
| } |
| |
| } |