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Java > Open Source Codes > org > apache > cayenne > query > QualifiedQuery


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19
20 package org.apache.cayenne.query;
21
22 import org.apache.cayenne.exp.Expression;
23
24 /**
25  * An abstract superclass of queries with Expression qualifiers.
26  *
27  * @author Andrus Adamchik
28  */
29 public abstract class QualifiedQuery extends AbstractQuery {
30
31     protected Expression qualifier;
32
33     /**
34      * Sets new query qualifier.
35      */
36     public void setQualifier(Expression qualifier) {
37         this.qualifier = qualifier;
38     }
39
40     /**
41      * Returns query qualifier.
42      */
43     public Expression getQualifier() {
44         return qualifier;
45     }
46
47     /**
48      * Adds specified qualifier to the existing qualifier joining it using "AND".
49      */
50     public void andQualifier(Expression e) {
51         qualifier = (qualifier != null) ? qualifier.andExp(e) : e;
52     }
53
54     /**
55      * Adds specified qualifier to the existing qualifier joining it using "OR".
56      */
57     public void orQualifier(Expression e) {
58         qualifier = (qualifier != null) ? qualifier.orExp(e) : e;
59     }
60 }
61
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