public void setRoot(int context, Object environment)
  {
  	super.setRoot(context, environment);
  	m_exprObj = executeFilterExpr(context, m_execContext, getPrefixResolver(), 
  	                  getIsTopLevel(), m_stackFrame, m_expr);
  }
public void setRoot ( int context , Object environment ) { super . setRoot ( context , environment ) ; m_exprObj = executeFilterExpr ( context , m_execContext , getPrefixResolver ( ) , getIsTopLevel ( ) , m_stackFrame , m_expr ) ; }
Initialize the context values for this expression
after it is cloned.

@param context The XPath runtime context for this
transformation.