Package org.apache.empire.db.expr.compare

package org.apache.empire.db.expr.compare

This package contains SQL-generator classes for compare expressions used in the where and having clause. There is no need to use these classes directly. They are internally created through functions on the DBColumnExpr object.

Classes

Class	Description
DBCompareAndOrExpr	This class is used for combining two filter constraints by and / or operator
DBCompareColExpr	This class is used for defining filter constraints based on a column expression in SQL
DBCompareExpr	This class is a common base class for all SQL filter constraints classes
DBCompareNotExpr	This class is used for defining filter constraints based on a column expression in SQL
DBCompareParenthesisExpr	This class wraps an existing compare expression with parenthesis.
DBExistsExpr	This class is used for building up the SQL-Command for the EXISTS syntax.