File: ElementAction.java

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package com.jclark.xsl.tr;

import com.jclark.xsl.om.*;
import com.jclark.xsl.expr.StringExpr;

class ElementAction implements Action {
  private StringExpr nameExpr;
  private StringExpr namespaceExpr;
  private NamespacePrefixMap nsMap;
  private Action content;

  ElementAction(StringExpr nameExpr, StringExpr namespaceExpr,
		NamespacePrefixMap nsMap, Action content) {
    this.nameExpr = nameExpr;
    this.namespaceExpr = namespaceExpr;
    this.nsMap = nsMap;
    this.content = content;
  }

  public void invoke(ProcessContext context, Node sourceNode, Result result)
    throws XSLException {
    String qname = nameExpr.eval(sourceNode, context);
    NamespacePrefixMap map = nsMap.getNameTable().getEmptyNamespacePrefixMap();
    Name name;
    if (namespaceExpr != null) {
      int i = qname.indexOf(':');
      String ns = namespaceExpr.eval(sourceNode, context);
      if (ns.length() == 0)
	name = nsMap.getNameTable().createName(qname.substring(i + 1));
      else {
        if (i > 0)
	  map = map.bind(qname.substring(0, i), ns);
        else
 	  map = map.bindDefault(ns);
        name = map.expandElementTypeName(qname, null);
      }
    }
    else {
      name = nsMap.expandElementTypeName(qname, sourceNode);
      String ns = name.getNamespace();
      if (ns != null) {
	String prefix = name.getPrefix();
	if (prefix != null)
	  map = map.bind(prefix, ns);
	else
	  map = map.bindDefault(ns);
      }
    }
    result.startElement(name, map);
    if (content != null)
      content.invoke(context, sourceNode, result);
    result.endElement(name);
  }
}