- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xalan" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xalan.templates;
-
- //import org.w3c.dom.*;
- import org.apache.xml.dtm.DTM;
-
- import org.xml.sax.*;
-
- import org.apache.xpath.*;
- import org.apache.xml.utils.QName;
- import org.apache.xalan.res.XSLTErrorResources;
- import org.apache.xalan.transformer.TransformerImpl;
- import org.apache.xalan.transformer.ResultTreeHandler;
-
- import javax.xml.transform.TransformerException;
-
- /**
- * <meta name="usage" content="advanced"/>
- * 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>
- */
- public class ElemElement extends ElemUse
- {
-
- /**
- * 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;
- }
-
- /**
- * 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(nodeName == null)
- return false;
-
- int len = nodeName.length();
-
- if(len == 0)
- return false;
-
- int indexOfNSSep = nodeName.indexOf(':');
-
- if(indexOfNSSep + 1 == len)
- return false;
-
- if(indexOfNSSep == 0)
- return false;
-
- String localName = QName.getLocalPart(nodeName);
-
- if(isValidNCName(localName))
- {
- String prefix = QName.getPrefixPart(nodeName);
- if(prefix.length() == 0)
- return true;
- if(isValidNCName(prefix))
- return true;
- }
-
- return false;
- }
-
- /**
- * 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(ResultTreeHandler 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
- {
-
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireTraceEvent(this);
-
- ResultTreeHandler rhandler = transformer.getResultTreeHandler();
- 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()) && (!validateNodeName(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);
-
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireTraceEndEvent(this);
- }
-
- /**
- * 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
- {
- ResultTreeHandler rhandler = transformer.getResultTreeHandler();
-
- if (null == nodeName)
- {
- shouldAddAttrs = false;
- }
- else
- {
- // Add namespace declarations.
- executeNSDecls(transformer);
-
- if (null != prefix)
- {
- rhandler.startPrefixMapping(prefix, nodeNamespace, true);
- }
-
- rhandler.startElement(nodeNamespace, QName.getLocalPart(nodeName),
- nodeName, null);
-
- 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);
- }
- unexecuteNSDecls(transformer);
- }
- }
- 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);
- }
-
- }