SqlConstraint (Pentaho Community Edition Project: mondrian 9.3.0.0-424 API)

All Known Subinterfaces:

MemberChildrenConstraint, TupleConstraint

All Known Implementing Classes:

DefaultMemberChildrenConstraint, DefaultTupleConstraint, MemberKeyConstraint, RolapNativeSet.SetConstraint, SqlContextConstraint
```
public interface SqlConstraint
```
Restricts the members that are fetched by SqlMemberSource.

Since:

Nov 2, 2005

Author:

av

See Also:

SqlMemberSource

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Object getCacheKey()
  Returns a key that becomes part of the key for caching the result of the SQL query.

- Method Detail
  - getCacheKey
```
Object getCacheKey()
```
    Returns a key that becomes part of the key for caching the result of the SQL query. So SqlConstraint instances that produce the same SQL resultset must return equal keys in terms of equal() and hashCode().
    
    Returns:
    
    valid key or null to prevent the result from being cached