Java Code Examples for org.apache.xpath.Expression#exprSetParent()

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	
	if(!(exp instanceof LocPathIterator))
	{
		// Yuck.  Need FilterExprIter.  Or make it so m_exprs can be just 
		// plain expressions?
		WalkingIterator wi = new WalkingIterator(getPrefixResolver());
		FilterExprWalker few = new FilterExprWalker(wi);
		wi.setFirstWalker(few);
		few.setInnerExpression(exp);
		wi.exprSetParent(UnionPathIterator.this);
		few.exprSetParent(wi);
		exp.exprSetParent(few);
		exp = wi;
	}
	else
		exp.exprSetParent(UnionPathIterator.this);
	m_exprs[m_index] = (LocPathIterator)exp;
}
 

/**
 * Set the parent node.
 * For an extension function, we also need to set the parent
 * node for all argument expressions.
 * 
 * @param n The parent node
 */
public void exprSetParent(ExpressionNode n) 
{
	
  super.exprSetParent(n);
    
  int nArgs = m_argVec.size();

  for (int i = 0; i < nArgs; i++)
  {
    Expression arg = (Expression) m_argVec.elementAt(i);

    arg.exprSetParent(n);
  }		
}
 

/**
 * Set an argument expression for a function.  This method is called by the
 * XPath compiler.
 *
 * @param arg non-null expression that represents the argument.
 * @param argNum The argument number index.
 *
 * @throws WrongNumberArgsException If a derived class determines that the
 * number of arguments is incorrect.
 */
public void setArg(Expression arg, int argNum)
        throws WrongNumberArgsException
{

  if (argNum < 3)
    super.setArg(arg, argNum);
  else
  {
    if (null == m_args)
    {
      m_args = new Expression[1];
      m_args[0] = arg;
    }
    else
    {

      // Slow but space conservative.
      Expression[] args = new Expression[m_args.length + 1];

      System.arraycopy(m_args, 0, args, 0, m_args.length);

      args[m_args.length] = arg;
      m_args = args;
    }
    arg.exprSetParent(this);
  }
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(this);
	m_arg0 = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(this);
	m_nextWalker = (AxesWalker)exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
  exp.exprSetParent(FilterExprIterator.this);
  m_expr = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(FuncExtFunction.this);
	m_exp = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(Function3Args.this);
	m_arg2 = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
  exp.exprSetParent(FilterExprIteratorSimple.this);
  m_expr = exp;
}
 

/**
 * Set the inner contained expression of this filter.
 */
public void setInnerExpression(Expression expr)
{
  expr.exprSetParent(this);
  m_expr = expr;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(this);
	m_firstWalker = (AxesWalker)exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(FilterExprWalker.this);
	m_expr = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(Function2Args.this);
	m_arg1 = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(this);
	m_right = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(this);
	m_right = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(Operation.this);
	m_left = exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(UnionPattern.this);
	m_patterns[m_index] = (StepPattern)exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
  exp.exprSetParent(this);
	m_relativePathPattern = (StepPattern)exp;
}
 

/**
 * @see ExpressionOwner#setExpression(Expression)
 */
public void setExpression(Expression exp)
{
	exp.exprSetParent(FunctionPattern.this);
	m_functionExpr = exp;
}
 

/**
 * Set an argument expression for a function.  This method is called by the
 * XPath compiler.
 *
 * @param arg non-null expression that represents the argument.
 * @param argNum The argument number index.
 *
 * @throws WrongNumberArgsException If the argNum parameter is beyond what
 * is specified for this function.
 */
public void setArg(Expression arg, int argNum)
        throws WrongNumberArgsException
{
  m_argVec.addElement(arg);
  arg.exprSetParent(this);
}