Package dev.frostlake.executor

Class ExpressionColumns

java.lang.Object

dev.frostlake.executor.ExpressionColumns

public final class ExpressionColumns
extends Object

Whether a projection expression NAMES a given column — read from the expression's own tokens, the way MaskingPolicyApplier rewrites references, so a name inside a string literal and a same-named function call are both left out of it.

Method Summary

Modifier and Type	Method	Description
static boolean	references(String expression, String columnName)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

references

public static boolean references(String expression,
 String columnName)

Parameters:

expression - the projection expression as written (A, t.A, UPPER(A))

columnName - the column to look for

Returns:

true when the expression references that column