QuerySpec


1   /*
2   // $Id: //open/mondrian/src/main/mondrian/rolap/agg/QuerySpec.java#5 $
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) 2001-2007 Julian Hyde and others
8   // All Rights Reserved.
9   // You must accept the terms of that agreement to use this software.
10  //
11  // jhyde, 30 August, 2001
12  */
13  
14  package mondrian.rolap.agg;
15  
16  import mondrian.rolap.RolapStar;
17  import mondrian.rolap.StarColumnPredicate;
18  
19  /**
20   * Contains the information necessary to generate a SQL statement to
21   * retrieve a set of cells.
22   *
23   * @author jhyde
24   * @author Richard M. Emberson
25   * @version $Id: //open/mondrian/src/main/mondrian/rolap/agg/QuerySpec.java#5 $
26   */
27  public interface QuerySpec {
28      RolapStar getStar();
29      int getMeasureCount();
30      RolapStar.Measure getMeasure(int i);
31      String   getMeasureAlias(int i);
32      RolapStar.Column[] getColumns();
33      String   getColumnAlias(int i);
34  
35      /**
36       * Returns the predicate on the <code>i</code>th column.
37       *
38       * <p>If the column is unconstrained, returns
39       * {@link LiteralStarPredicate}(true).
40       *
41       * @param i Column ordinal
42       * @return Constraint on column
43       */
44      StarColumnPredicate getColumnPredicate(int i);
45  
46      String   generateSqlQuery();
47  }
48

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