Java ElemTemplateElement.getParentElem方法代码示例

import org.apache.xalan.templates.ElemTemplateElement; //导入方法依赖的package包/类
/**
 * Verify that a literal result belongs to a result element, a variable, 
 * or a parameter.
 */

boolean ancestorIsOk(ElemTemplateElement child)
{
  while (child.getParentElem() != null && !(child.getParentElem() instanceof ElemExsltFunction))
  {
    ElemTemplateElement parent = child.getParentElem();
    if (parent instanceof ElemExsltFuncResult 
        || parent instanceof ElemVariable
        || parent instanceof ElemParam
        || parent instanceof ElemMessage)
      return true;
    child = parent;      
  }
  return false;
}
 

import org.apache.xalan.templates.ElemTemplateElement; //导入方法依赖的package包/类
private double getElemVersion()
{
  ElemTemplateElement elem = getElemTemplateElement();
  double version = -1; 
  while ((version == -1 || version == Constants.XSLTVERSUPPORTED) && elem != null)
  {
    try{
    version = Double.valueOf(elem.getXmlVersion()).doubleValue();
    }
    catch (Exception ex)
    {
      version = -1;
    }
    elem = elem.getParentElem();
    }
  return (version == -1)? Constants.XSLTVERSUPPORTED : version;
}
 

import org.apache.xalan.templates.ElemTemplateElement; //导入方法依赖的package包/类
/**
 * Verify that the func:result element does not appear within a variable,
 * parameter, or another func:result, and that it belongs to a func:function 
 * element.
 */
public void startElement(
        StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
          throws SAXException
{
  String msg = "";

  super.startElement(handler, uri, localName, rawName, attributes);
  ElemTemplateElement ancestor = handler.getElemTemplateElement().getParentElem();
  while (ancestor != null && !(ancestor instanceof ElemExsltFunction))
  {
    if (ancestor instanceof ElemVariable 
        || ancestor instanceof ElemParam
        || ancestor instanceof ElemExsltFuncResult)
    {
      msg = "func:result cannot appear within a variable, parameter, or another func:result.";
      handler.error(msg, new SAXException(msg));
    }
    ancestor = ancestor.getParentElem();
  }
  if (ancestor == null)
  {
    msg = "func:result must appear in a func:function element";
    handler.error(msg, new SAXException(msg));
  }
}
 

import org.apache.xalan.templates.ElemTemplateElement; //导入方法依赖的package包/类
/**
 * This method retrieves the xsl:template
 * that is in effect, which may be a matched template
 * or a named template.
 *
 * <p>Please note that the ElemTemplate returned may
 * be a default template, and thus may not have a template
 * defined in the stylesheet.</p>
 *
 * @return The current xsl:template, should not be null.
 */
public ElemTemplate getCurrentTemplate()
{

  ElemTemplateElement elem = getCurrentElement();

  while ((null != elem)
         && (elem.getXSLToken() != Constants.ELEMNAME_TEMPLATE))
  {
    elem = elem.getParentElem();
  }

  return (ElemTemplate) elem;
}
 

import org.apache.xalan.templates.ElemTemplateElement; //导入方法依赖的package包/类
/**
  * Non-recursive traversal of FunctionElement tree based on TreeWalker to verify that
  * there are no literal result elements except within a func:result element and that
  * the func:result element does not contain any following siblings except xsl:fallback.
  */
 public void validate(ElemTemplateElement elem, StylesheetHandler handler)
   throws SAXException
 {
   String msg = "";
   while (elem != null)
   { 
     //System.out.println("elem " + elem);
     if (elem instanceof ElemExsltFuncResult 
         && elem.getNextSiblingElem() != null 
         && !(elem.getNextSiblingElem() instanceof ElemFallback))
     {
       msg = "func:result has an illegal following sibling (only xsl:fallback allowed)";
       handler.error(msg, new SAXException(msg));
     }
     
     if((elem instanceof ElemApplyImport
 || elem instanceof ElemApplyTemplates
 || elem instanceof ElemAttribute
 || elem instanceof ElemCallTemplate
 || elem instanceof ElemComment
 || elem instanceof ElemCopy
 || elem instanceof ElemCopyOf
 || elem instanceof ElemElement
 || elem instanceof ElemLiteralResult
 || elem instanceof ElemNumber
 || elem instanceof ElemPI
 || elem instanceof ElemText
 || elem instanceof ElemTextLiteral
 || elem instanceof ElemValueOf)
&& !(ancestorIsOk(elem)))
     {
       msg ="misplaced literal result in a func:function container.";
       handler.error(msg, new SAXException(msg));
     }
     ElemTemplateElement nextElem = elem.getFirstChildElem();
     while (nextElem == null)
     {
       nextElem = elem.getNextSiblingElem();
       if (nextElem == null)
         elem = elem.getParentElem();
       if (elem == null || elem instanceof ElemExsltFunction)
         return; // ok
     }  
     elem = nextElem;
   }
 }