org.jpox.store.expression
Interface ExpressionLogicSetAdapter
- All Known Subinterfaces:
- DatastoreAdapter, RDBMSAdapter
- All Known Implementing Classes:
- AbstractDatastoreAdapter, DatabaseAdapter
- public interface ExpressionLogicSetAdapter
Interface that allows performing algebra operations over sets
- Version:
- $Revision: 1.1 $
cartersianProduct
public java.lang.String cartersianProduct(LogicSetExpression Y)
- Generates a expression that represents the cartesian product of two sets:
X
and Y
.
Actually, X
is not generated to the expression.
- Parameters:
Y
- right hand set
- Returns:
- the cartesion product expression. if the cartesian product expression is "X x Y", the returned expression
is " x Y". Note that the left hand set was not introduced to the expression
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