1 /**
2 * Copyright 2006-2015 the original author or authors.
3 *
4 * Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
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.mybatis.generator.internal.rules;
17
18 import org.mybatis.generator.api.IntrospectedTable;
19
20 /**
21 * This class encapsulates all the code generation rules for a table using the
22 * conditional model. In this model we do not generate primary key or record
23 * with BLOBs classes if the class would only hold one field.
24 *
25 * @author Jeff Butler
26 *
27 */
28 public class ConditionalModelRules extends BaseRules {
29
30 /**
31 *
32 */
33 public ConditionalModelRules(IntrospectedTable introspectedTable) {
34 super(introspectedTable);
35 }
36
37 /**
38 * We generate a primary key if there is more than one primary key field.
39 *
40 * @return true if the primary key should be generated
41 */
42 public boolean generatePrimaryKeyClass() {
43 return introspectedTable.getPrimaryKeyColumns().size() > 1;
44 }
45
46 /**
47 * Generate a base record if there are any base columns, or if there is only
48 * one primary key coulmn (in which case we will not generate a primary key
49 * class), or if there is only one BLOB column (in which case we will not
50 * generate a record with BLOBs class).
51 *
52 * @return true if the class should be generated
53 */
54 public boolean generateBaseRecordClass() {
55 return introspectedTable.getBaseColumns().size() > 0
56 || introspectedTable.getPrimaryKeyColumns().size() == 1
57 || (introspectedTable.getBLOBColumns().size() > 0 && !generateRecordWithBLOBsClass());
58
59 }
60
61 /**
62 * We generate a record with BLOBs class if there is more than one BLOB
63 * column. Do not generate a BLOBs class if any other super class would only
64 * contain one field
65 *
66 * @return true if the record with BLOBs class should be generated
67 */
68 public boolean generateRecordWithBLOBsClass() {
69 int otherColumnCount = introspectedTable.getPrimaryKeyColumns().size()
70 + introspectedTable.getBaseColumns().size();
71
72 return otherColumnCount > 1
73 && introspectedTable.getBLOBColumns().size() > 1;
74 }
75 }