package com.jclark.xsl.tr;

import com.jclark.xsl.om.*;
import com.jclark.xsl.expr.VariantBase;
import java.net.URL;

public abstract class ResultFragmentVariantBase extends VariantBase implements ResultFragmentVariant {
  private String cachedStringValue = null;
  private Node cachedNode = null;

  public String convertToString() throws XSLException {
    if (cachedStringValue == null) {
      StringResult result = new StringResult();
      append(result);
      cachedStringValue = result.toString();
    }
    return cachedStringValue;
  }

  public boolean convertToBoolean() throws XSLException {
    return true;
  }

  public Node getTree(ProcessContext context) throws XSLException {
    if (cachedNode == null) {
      Node[] rootNodeRef = new Node[1];
      Result result = context.createNodeResult(getBaseNode(), rootNodeRef);
      result.start(null);
      append(result);
      result.end();
      cachedNode = rootNodeRef[0];
    }
    return cachedNode;
  }
}