Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Constraint |
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| 1.0;1 |
1 | package org.odbms; | |
2 | ||
3 | /* Copyright 2002-2005 The Apache Software Foundation | |
4 | * | |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | ||
18 | /** | |
19 | * constraint for a single query node. | |
20 | * <br><br>A Constraint is associated with one single <code>Query</code> node | |
21 | * - a single member of a class.<br><br> | |
22 | * Constraints are constructed by calling | |
23 | * <a href="Query.html#constrain(java.lang.object)"> | |
24 | * <code>Query.constrain()</code></a>. | |
25 | * <br><br> | |
26 | * Constraints can be joined with the methods and() and or().<br><br> | |
27 | * The following mutual exclusive functions set the evaluation mode. | |
28 | * The subsequent call prevails:<br> | |
29 | * identity(), equal(), greater(), greaterOrEqual(), smaller(), | |
30 | * smallerOrEqual(), like(), contains()<br><br> | |
31 | * is(), and not() are also mutually exclusive.<br><br> | |
32 | */ | |
33 | public interface Constraint { | |
34 | ||
35 | /** | |
36 | * links two Constraints for AND evaluation | |
37 | * @param andWith the other Constraint | |
38 | * @return a new Constraint, that can be used for further calls to and() and or() | |
39 | */ | |
40 | public Constraint and (Constraint andWith); | |
41 | ||
42 | ||
43 | ||
44 | /** | |
45 | * links two Constraints for OR evaluation | |
46 | * @param orWith the other Constraint | |
47 | * @return a new Constraint, that can be used for further calls to and() and or() | |
48 | */ | |
49 | public Constraint or (Constraint orWith); | |
50 | ||
51 | ||
52 | ||
53 | /** | |
54 | * sets the evaluation mode to "==" | |
55 | * @return this Constraint to allow the chaining of method calls | |
56 | */ | |
57 | public Constraint equal (); | |
58 | ||
59 | ||
60 | ||
61 | /** | |
62 | * sets the evaluation mode to ">" | |
63 | * @return this Constraint to allow the chaining of method calls | |
64 | */ | |
65 | public Constraint greater (); | |
66 | ||
67 | ||
68 | ||
69 | /** | |
70 | * sets the evaluation mode to ">=" | |
71 | * @return this Constraint to allow the chaining of method calls | |
72 | */ | |
73 | public Constraint greaterOrEqual (); | |
74 | ||
75 | ||
76 | ||
77 | /** | |
78 | * sets the evaluation mode to "<" | |
79 | * @return this Constraint to allow the chaining of method calls | |
80 | */ | |
81 | public Constraint smaller (); | |
82 | ||
83 | ||
84 | ||
85 | /** | |
86 | * sets the evaluation mode to "<=" | |
87 | * @return this Constraint to allow the chaining of method calls | |
88 | */ | |
89 | public Constraint smallerOrEqual (); | |
90 | ||
91 | ||
92 | /** | |
93 | * sets the evaluation mode to identity comparison | |
94 | * @return this Constraint to allow the chaining of method calls | |
95 | */ | |
96 | public Constraint identity (); | |
97 | ||
98 | ||
99 | /** | |
100 | * sets the evaluation mode to "like" comparison | |
101 | * @return this Constraint to allow the chaining of method calls | |
102 | */ | |
103 | public Constraint like (); | |
104 | ||
105 | ||
106 | /** | |
107 | * sets the evaluation mode to containment comparison | |
108 | * @return this Constraint to allow the chaining of method calls | |
109 | */ | |
110 | public Constraint contains (); | |
111 | ||
112 | ||
113 | /** | |
114 | * turns off not() comparison | |
115 | * @return this Constraint to allow the chaining of method calls | |
116 | */ | |
117 | public Constraint is (); | |
118 | ||
119 | ||
120 | ||
121 | /** | |
122 | * turns on not() comparison | |
123 | * @return this Constraint to allow the chaining of method calls | |
124 | */ | |
125 | public Constraint not (); | |
126 | } | |
127 |