Docjar: org/roller/business/persistence/Query.java

Home >> All >> org >> roller >> business >> [ persistence Javadoc ]

Source code: org/roller/business/persistence/Query.java

1   /*
2    * Created on Oct 18, 2003
3    */
4   package org.roller.business.persistence;
5   
6   
7   import org.roller.RollerException;
8   
9   import java.util.List;
10  
11  /**
12   * Generalized notion of a query, see QueryText for usage example.
13   * @author Dave Johnson
14   */
15  public interface Query
16  {
17      public static final BooleanOperator AND = new BooleanOperator(" and ");
18      public static final BooleanOperator OR = new BooleanOperator(" or ");
19      public static final Operator EQ = new Operator(" = ");
20      public static final Operator LT = new Operator(" < ");
21      public static final Operator LE = new Operator(" <= ");
22      public static final Operator GT = new Operator(" > ");
23      public static final Operator GE = new Operator(" >= ");
24      public static final Operator NE = new Operator(" != ");
25      public static final Operator LIKE = new Operator(" like ");
26      public static final Operator NOT_NULL = new Operator(" not null ");
27      public static final Operator IS_NULL = new Operator(" null ");
28      public static final SortByOperator ASC = new SortByOperator(" asc ");
29      public static final SortByOperator DESC = new SortByOperator(" desc ");
30  
31      public abstract List execute() throws RollerException;
32      
33      public abstract void setWhere(Condition cond);
34      
35      public abstract void setSortBy(SortByOperator operator, String string);
36      
37      public abstract void setLimit(int limit);
38  }