org.apache.xalan.templates.ElemParam Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of converter3 Show documentation

Tool to convert CSV and XLS to XML, to transform XML and to convert XML to CSV, HTML, other text files, PDF etc., useful as command line tool and integrated in other projects.

There is a newer version: 3.119

Show newest version

/*
 * 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: ElemParam.java 468643 2006-10-28 06:56:03Z minchau $
 */
package org.apache.xalan.templates;

import javax.xml.transform.TransformerException;

import org.apache.xalan.transformer.TransformerImpl;
import org.apache.xpath.VariableStack;
import org.apache.xpath.objects.XObject;

/**
 * Implement xsl:param.
 *  * 
 * 
 * 
 * @see variables in XSLT Specification
 * @xsl.usage advanced
 */
public class ElemParam extends ElemVariable
{
    static final long serialVersionUID = -1131781475589006431L;
  int m_qnameID;

  /**
   * Constructor ElemParam
   *
   */
  public ElemParam(){}

  /**
   * Get an int constant identifying the type of element.
   * @see org.apache.xalan.templates.Constants
   *
   * @return The token ID of the element
   */
  public int getXSLToken()
  {
    return Constants.ELEMNAME_PARAMVARIABLE;
  }

  /**
   * Return the node name.
   *
   * @return The element's name
   */
  public String getNodeName()
  {
    return Constants.ELEMNAME_PARAMVARIABLE_STRING;
  }

  /**
   * Copy constructor.
   *
   * @param param Element from an xsl:param
   *
   * @throws TransformerException
   */
  public ElemParam(ElemParam param) throws TransformerException
  {
    super(param);
  }

  /**
   * 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);
    m_qnameID = sroot.getComposeState().getQNameID(m_qname);
    int parentToken = m_parentNode.getXSLToken();
    if (parentToken == Constants.ELEMNAME_TEMPLATE
        || parentToken == Constants.EXSLT_ELEMNAME_FUNCTION)
      ((ElemTemplate)m_parentNode).m_inArgsSize++;
  }
  
  /**
   * Execute a variable declaration and push it onto the variable stack.
   * @see variables in XSLT Specification
   *
   * @param transformer non-null reference to the the current transform-time state.
   *
   * @throws TransformerException
   */
  public void execute(TransformerImpl transformer) throws TransformerException
  {
    if (transformer.getDebug())
      transformer.getTraceManager().fireTraceEvent(this);
      
    VariableStack vars = transformer.getXPathContext().getVarStack();
    
    if(!vars.isLocalSet(m_index))
    {

      int sourceNode = transformer.getXPathContext().getCurrentNode();
      XObject var = getValue(transformer, sourceNode);
  
      // transformer.getXPathContext().getVarStack().pushVariable(m_qname, var);
      transformer.getXPathContext().getVarStack().setLocalVariable(m_index, var);
    }
    
    if (transformer.getDebug())
      transformer.getTraceManager().fireTraceEndEvent(this);
  }
  
}