// Even though this function applies generally to expressions and tables
// and not just to TVEs as such, it is somewhat TVE-related because TVEs
// represent the points where expression trees depend on tables.
public static boolean isOperandDependentOnTable(AbstractExpression expr, String tableAlias) {
assert (tableAlias != null);
for (TupleValueExpression tve : ExpressionUtil.getTupleValueExpressions(expr)) {
if (tableAlias.equals(tve.getTableAlias())) {
return true;
}
}
return false;
}
// Even though this function applies generally to expressions and tables and not just to TVEs as
// such,
// this function is somewhat TVE-related because TVEs DO represent the points where expression
// trees
// depend on tables.
public static boolean isOperandDependentOnTable(AbstractExpression expr, Table table) {
for (TupleValueExpression tve : ExpressionUtil.getTupleValueExpressions(expr)) {
// TODO: This clumsy testing of table names regardless of table aliases is
// EXACTLY why we can't have nice things like self-joins.
if (table.getTypeName().equals(tve.getTableName())) {
return true;
}
}
return false;
}
