RolapStoredMeasure


1   /*
2   // $Id: //open/mondrian/src/main/mondrian/rolap/RolapStoredMeasure.java#15 $
3   // This software is subject to the terms of the Common Public License
4   // Agreement, available at the following URL:
5   // http://www.opensource.org/licenses/cpl.html.
6   // Copyright (C) 2001-2002 Kana Software, Inc.
7   // Copyright (C) 2001-2006 Julian Hyde and others
8   // All Rights Reserved.
9   // You must accept the terms of that agreement to use this software.
10  //
11  // jhyde, 10 August, 2001
12  */
13  
14  package mondrian.rolap;
15  import mondrian.olap.MondrianDef;
16  
17  /**
18   * A measure which is implemented by a SQL column or SQL expression (as opposed
19   * to a {@link RolapCalculatedMember}.
20   *
21   * <p>Implemented by {@link RolapBaseCubeMeasure} and
22   * {@link RolapVirtualCubeMeasure}.
23   *
24   * @author jhyde
25   * @since 10 August, 2001
26   * @version $Id: //open/mondrian/src/main/mondrian/rolap/RolapStoredMeasure.java#15 $
27   */
28  interface RolapStoredMeasure extends RolapMeasure {
29      /**
30       * Returns the cube this measure belongs to.
31       */
32      RolapCube getCube();
33  
34      /**
35       * Returns the column which holds the value of the measure.
36       */
37      MondrianDef.Expression getMondrianDefExpression();
38  
39      /**
40       * Returns the aggregation function which rolls up this measure: "SUM",
41       * "COUNT", etc.
42       */
43      RolapAggregator getAggregator();
44  
45      /**
46       * Returns the {@link mondrian.rolap.RolapStar.Measure} from which this
47       * member is computed. Untyped, because another implementation might store
48       * it somewhere else.
49       */
50      Object   getStarMeasure();
51  }
52  
53  // End RolapStoredMeasure.java
54
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