Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
GenericDao |
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| 1.0;1 |
1 | /* | |
2 | * Copyright 2007-2008 The Kuali Foundation | |
3 | * | |
4 | * Licensed under the Educational Community License, Version 2.0 (the "License"); | |
5 | * you may not use this file except in compliance with the License. | |
6 | * You may obtain a copy of the License at | |
7 | * | |
8 | * http://www.opensource.org/licenses/ecl2.php | |
9 | * | |
10 | * Unless required by applicable law or agreed to in writing, software | |
11 | * distributed under the License is distributed on an "AS IS" BASIS, | |
12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | * See the License for the specific language governing permissions and | |
14 | * limitations under the License. | |
15 | */ | |
16 | package org.kuali.rice.core.dao; | |
17 | ||
18 | import java.util.Collection; | |
19 | import java.util.List; | |
20 | import java.util.Map; | |
21 | ||
22 | import org.apache.ojb.broker.query.Criteria; | |
23 | ||
24 | /** | |
25 | * This is the generic data access interface for business objects. | |
26 | * This class was adapted from the Kuali Nervous System | |
27 | * (org.kuali.rice.kns.dao.BusinessObjectDao). | |
28 | * It's not as generic as it could be as it relies on the OJB criteria object... | |
29 | * | |
30 | * @author Kuali Rice Team (rice.collab@kuali.org) | |
31 | */ | |
32 | public interface GenericDao { | |
33 | /** | |
34 | * Saves any object | |
35 | * | |
36 | * @param bo | |
37 | */ | |
38 | public void save(Object bo); | |
39 | ||
40 | /** | |
41 | * Saves a List of objects | |
42 | * | |
43 | * @param businessObjects | |
44 | */ | |
45 | public void save(List businessObjects); | |
46 | ||
47 | /** | |
48 | * Retrieves an object instance identified bys it primary key. | |
49 | * | |
50 | * @param clazz the class | |
51 | * @param id the primary key value | |
52 | * @return Object | |
53 | */ | |
54 | public Object findById(Class clazz, Object keyValue); | |
55 | ||
56 | /** | |
57 | * Retrieves an object instance identified by its primary keys and | |
58 | * values. This can be done by constructing a map where the key to the | |
59 | * map entry is the primary key attribute and the value of the entry | |
60 | * being the primary key value. For composite keys, pass in each | |
61 | * primaryKey attribute and its value as a map entry. | |
62 | * | |
63 | * @param clazz | |
64 | * @param primaryKeys | |
65 | * @return Object | |
66 | */ | |
67 | public Object findByPrimaryKey(Class clazz, Map primaryKeys); | |
68 | ||
69 | /** | |
70 | * This method should be used to try and locate an object instance by passing | |
71 | * in unique keys and values. This can be done by constructing a map where the key to the | |
72 | * map entry is the unique key attribute and the value of the entry | |
73 | * being the unique key value. For composite keys, pass in each | |
74 | * unique key attribute and its value as a map entry. | |
75 | * | |
76 | * @param clazz | |
77 | * @param uniqueKeys | |
78 | * @return Object | |
79 | */ | |
80 | public Object findByUniqueKey(Class clazz, Map uniqueKeys); | |
81 | ||
82 | /** | |
83 | * Retrieves an object instance identified by the class of the given | |
84 | * object and the object's primary key values. | |
85 | * | |
86 | * @param object | |
87 | * @return Object | |
88 | */ | |
89 | public Object retrieve(Object object); | |
90 | ||
91 | /** | |
92 | * This method allows you to pass in an object that has some fields filled in, | |
93 | * and will query underneath by automatically constructing a select statement | |
94 | * whose where clause is built automatically by looking at the non-null | |
95 | * attributes and using their values as part of the query. This is basically | |
96 | * a query by "template" method. | |
97 | * @param object | |
98 | * @return Collection | |
99 | */ | |
100 | public Collection findMatchingByExample(Object object); | |
101 | ||
102 | /** | |
103 | * Retrieves a collection of business objects populated with data, such | |
104 | * that each record in the database populates a new object instance. | |
105 | * This will only retrieve business objects by class type. | |
106 | * | |
107 | * @param clazz | |
108 | * @return Collection | |
109 | */ | |
110 | public Collection findAll(Class clazz); | |
111 | ||
112 | /** | |
113 | * Retrieves a collection of business objects populated with data, such | |
114 | * that each record in the database populates a new object instance. | |
115 | * This will only retrieve business objects by class type. Orders the | |
116 | * results by the given field. | |
117 | * | |
118 | * @param clazz | |
119 | * @return Collection | |
120 | */ | |
121 | public Collection findAllOrderBy(Class clazz, String sortField, | |
122 | boolean sortAscending); | |
123 | ||
124 | /** | |
125 | * This method retrieves a collection of business objects populated with | |
126 | * data, such that each record in the database populates a new object | |
127 | * instance. This will retrieve business objects by class type and also | |
128 | * by criteria passed in as key-value pairs, specifically attribute | |
129 | * name-expected value. | |
130 | * | |
131 | * @param clazz | |
132 | * @param fieldValues | |
133 | * @return Collection | |
134 | */ | |
135 | public Collection findMatching(Class clazz, Map fieldValues); | |
136 | ||
137 | /** | |
138 | * This method allows for a more flexible search by allowing the programmer to | |
139 | * construct the criteria however they need to and then pass that in for execution. | |
140 | * @param clazz | |
141 | * @param criteria | |
142 | * @return Collection | |
143 | */ | |
144 | public Collection findMatching(Class clazz, Criteria criteria); | |
145 | ||
146 | /** | |
147 | * This method allows for a more flexible search by allowing the programmer to | |
148 | * construct the criteria however they need to and then pass that in for execution. | |
149 | * @param clazz | |
150 | * @param criteria | |
151 | * @param selectForUpdate whether to perform a select for update query | |
152 | * @param wait millis to wait for select for update | |
153 | * @return Collection | |
154 | */ | |
155 | public Collection findMatching(Class clazz, Criteria criteria, boolean selectForUpdate, long wait); | |
156 | ||
157 | /** | |
158 | * @param clazz | |
159 | * @param fieldValues | |
160 | * @return count of BusinessObjects of the given class whose fields | |
161 | * match the values in the given Map. | |
162 | */ | |
163 | public int countMatching(Class clazz, Map fieldValues); | |
164 | ||
165 | /** | |
166 | * | |
167 | * This method returns the number of matching result given the positive | |
168 | * criterias and negative criterias. The negative criterias are the ones | |
169 | * that will be set to "notEqualTo" or "notIn" | |
170 | * | |
171 | * @param clazz | |
172 | * @param positiveFieldValues | |
173 | * Map of fields and values for positive criteria | |
174 | * @param negativeFieldValues | |
175 | * Map of fields and values for negative criteria | |
176 | * @return int | |
177 | */ | |
178 | public int countMatching(Class clazz, Map positiveFieldValues, | |
179 | Map negativeFieldValues); | |
180 | ||
181 | /** | |
182 | * This method retrieves a collection of business objects populated with | |
183 | * data, such that each record in the database populates a new object | |
184 | * instance. This will retrieve business objects by class type and also | |
185 | * by criteria passed in as key-value pairs, specifically attribute | |
186 | * name-expected value. Orders the results by the given field. | |
187 | * | |
188 | * @param clazz | |
189 | * @param fieldValues | |
190 | * @return Collection | |
191 | */ | |
192 | public Collection findMatchingOrderBy(Class clazz, Map fieldValues, | |
193 | String sortField, boolean sortAscending); | |
194 | ||
195 | /** | |
196 | * Deletes a business object from the database. | |
197 | * | |
198 | * @param bo | |
199 | */ | |
200 | public void delete(Object bo); | |
201 | ||
202 | /** | |
203 | * Deletes each business object in the given List from the database. | |
204 | * | |
205 | * @param boList | |
206 | */ | |
207 | public void delete(List<Object> boList); | |
208 | ||
209 | /** | |
210 | * Deletes the business objects matching the given fieldValues | |
211 | * | |
212 | * @param clazz | |
213 | * @param fieldValues | |
214 | */ | |
215 | public void deleteMatching(Class clazz, Map fieldValues); | |
216 | } |