Java 设计模式-合成模式（Composite）_JAVA_编程开发_程序员俱乐部

??? 合成模式（Composite）是一组对象的组合，这些对象可以是容器对象，表现为组的概念；另外一些对象则代表了单个对象，称为叶子对象。
???? 组对象可以包含叶子对象也可以包含其他组对象。组对象和叶子对象定义相同的行为。
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?? 合成模式（Composite）的意图就是为了保证客户端调用单对象和调用组合对象的一致性，也就需要组合对象和单个对象需要共享同一个接口。
?? 在对组合对象建模时，为了防止死循环，可以确保组合对象都是树形结构。

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class="dp-j">
1. /**?
2. ?*?
3. ?*?@author?Lenovo?
4. ?*?@version?$Id:?RemitModel.java,?v?0.1?2014年9月24日?下午5:03:53?Lenovo?Exp?$?
5. ?*/??
6. public?class?RemitModel?{??
7. ??
8. ????private?PayeeModel?payeeModel;??
9. ??
10. ????private?String?????remark;??
11. ??
12. ????private?String?????bankAccount;??
13. ??
14. ????/**?
15. ?????*?Getter?method?for?property?<tt>payeeModel</tt>.?
16. ?????*?
17. ?????*?@return?property?value?of?payeeModel?
18. ?????*/??
19. ????public?PayeeModel?getPayeeModel()?{??
20. ????????return?payeeModel;??
21. ????}??
22. ??
23. ????/**?
24. ?????*?Setter?method?for?property?<tt>payeeModel</tt>.?
25. ?????*?
26. ?????*?@param?payeeModel?value?to?be?assigned?to?property?payeeModel?
27. ?????*/??
28. ????public?void?setPayeeModel(PayeeModel?payeeModel)?{??
29. ????????this.payeeModel?=?payeeModel;??
30. ????}??
31. ??
32. ????/**?
33. ?????*?Getter?method?for?property?<tt>remark</tt>.?
34. ?????*?
35. ?????*?@return?property?value?of?remark?
36. ?????*/??
37. ????public?String?getRemark()?{??
38. ????????return?remark;??
39. ????}??
40. ??
41. ????/**?
42. ?????*?Setter?method?for?property?<tt>remark</tt>.?
43. ?????*?
44. ?????*?@param?remark?value?to?be?assigned?to?property?remark?
45. ?????*/??
46. ????public?void?setRemark(String?remark)?{??
47. ????????this.remark?=?remark;??
48. ????}??
49. ??
50. ????/**?
51. ?????*?Getter?method?for?property?<tt>bankAccount</tt>.?
52. ?????*?
53. ?????*?@return?property?value?of?bankAccount?
54. ?????*/??
55. ????public?String?getBankAccount()?{??
56. ????????return?bankAccount;??
57. ????}??
58. ??
59. ????/**?
60. ?????*?Setter?method?for?property?<tt>bankAccount</tt>.?
61. ?????*?
62. ?????*?@param?bankAccount?value?to?be?assigned?to?property?bankAccount?
63. ?????*/??
64. ????public?void?setBankAccount(String?bankAccount)?{??
65. ????????this.bankAccount?=?bankAccount;??
66. ????}??
67. ??
68. }??
69. /**?
70. ?*?
71. ?*?@author?Lenovo?
72. ?*?@version?$Id:?PayeeModel.java,?v?0.1?2014年9月24日?下午5:32:38?Lenovo?Exp?$?
73. ?*/??
74. public?class?PayeeModel?{??
75. ??
76. ????private?String?payeeBankAccount;??
77. ??
78. ????/**?
79. ?????*?Getter?method?for?property?<tt>payeeBankAccount</tt>.?
80. ?????*?
81. ?????*?@return?property?value?of?payeeBankAccount?
82. ?????*/??
83. ????public?String?getPayeeBankAccount()?{??
84. ????????return?payeeBankAccount;??
85. ????}??
86. ??
87. ????/**?
88. ?????*?Setter?method?for?property?<tt>payeeBankAccount</tt>.?
89. ?????*?
90. ?????*?@param?payeeBankAccount?value?to?be?assigned?to?property?payeeBankAccount?
91. ?????*/??
92. ????public?void?setPayeeBankAccount(String?payeeBankAccount)?{??
93. ????????this.payeeBankAccount?=?payeeBankAccount;??
94. ????}??
95. ??
96. }??

1. /**?
2. ?*?校验器?
3. ?*?@author?Lenovo?
4. ?*?@version?$Id:?Validator.java,?v?0.1?2014年9月24日?下午5:01:40?Lenovo?Exp?$?
5. ?*/??
6. public?interface?Validator?{??
7. ????/**?
8. ?????*?是否含有子节点?
9. ?????*?
10. ?????*?@return?
11. ?????*/??
12. ????public?boolean?hasChild();??
13. ??
14. ????/**?
15. ?????*?校验数据?
16. ?????*?
17. ?????*?@param?remitModel?
18. ?????*?@return?
19. ?????*/??
20. ????public?boolean?validate(RemitModel?remitModel);??
21. ??
22. ????/**?
23. ?????*?添加子校验器?
24. ?????*?
25. ?????*?@param?validator?
26. ?????*/??
27. ????public?void?addValidator(Validator?validator);??
28. ??
29. }??
30. import?java.util.ArrayList;??
31. import?java.util.List;??
32. ??
33. /**?
34. ?*?
35. ?*?@author?Lenovo?
36. ?*?@version?$Id:?RemitModelValidator.java,?v?0.1?2014年9月24日?下午5:05:25?Lenovo?Exp?$?
37. ?*/??
38. public?class?RemitModelValidator?implements?Validator?{??
39. ??
40. ????private?List<Validator>?children?=?new?ArrayList<Validator>();??
41. ??
42. ????/**?
43. ?????*?@see?com.cathy.demo.pattern.composite.Validator#validate(com.cathy.demo.pattern.composite.RemitModel)?
44. ?????*/??
45. ????public?boolean?validate(RemitModel?remitModel)?{??
46. ????????if?(hasChild())?{??
47. ????????????for?(Validator?validator?:?children)?{??
48. ????????????????if?(!validator.validate(remitModel))?{??
49. ????????????????????System.out.println("校验失败");??
50. ????????????????????return?false;??
51. ????????????????}??
52. ????????????????System.out.println("--");??
53. ????????????}??
54. ????????}??
55. ????????System.out.println("校验通过");??
56. ????????return?true;??
57. ????}??
58. ??
59. ????/**?
60. ?????*?@see?com.cathy.demo.pattern.composite.Validator#hasChild()?
61. ?????*/??
62. ????public?boolean?hasChild()?{??
63. ????????return?!children.isEmpty();??
64. ????}??
65. ??
66. ????/**?
67. ?????*?@see?com.cathy.demo.pattern.composite.Validator#addValidator(com.cathy.demo.pattern.composite.Validator)?
68. ?????*/??
69. ????public?void?addValidator(Validator?validator)?{??
70. ????????children.add(validator);??
71. ????}??
72. ??
73. }??
74. ??
75. import?java.util.ArrayList;??
76. import?java.util.List;??
77. ??
78. /**?
79. ?*?
80. ?*?@author?Lenovo?
81. ?*?@version?$Id:?PayeeValidator.java,?v?0.1?2014年9月24日?下午5:20:06?Lenovo?Exp?$?
82. ?*/??
83. public?class?PayeeValidator?implements?Validator?{??
84. ??
85. ????private?List<Validator>?children?=?new?ArrayList<Validator>();??
86. ??
87. ????/**?
88. ?????*?@see?com.cathy.demo.pattern.composite.Validator#hasChild()?
89. ?????*/??
90. ????public?boolean?hasChild()?{??
91. ????????return?!children.isEmpty();??
92. ????}??
93. ??
94. ????/**?
95. ?????*?@see?com.cathy.demo.pattern.composite.Validator#validate(com.cathy.demo.pattern.composite.RemitModel)?
96. ?????*/??
97. ????public?boolean?validate(RemitModel?remitModel)?{??
98. ????????if?(hasChild())?{??
99. ????????????for?(Validator?validator?:?children)?{??
100. ????????????????if?(!validator.validate(remitModel))?{??
101. ????????????????????System.out.println("校验失败");??
102. ????????????????????return?false;??
103. ????????????????}??
104. ????????????????System.out.println("**");??
105. ????????????}??
106. ????????}??
107. ????????System.out.println("收款人校验通过");??
108. ????????return?true;??
109. ????}??
110. ??
111. ????/**?
112. ?????*?@see?com.cathy.demo.pattern.composite.Validator#addValidator(com.cathy.demo.pattern.composite.Validator)?
113. ?????*/??
114. ????public?void?addValidator(Validator?validator)?{??
115. ????????children.add(validator);??
116. ????}??
117. ??
118. }??
119. /**?
120. ?*?
121. ?*?@author?Lenovo?
122. ?*?@version?$Id:?RemarkValidator.java,?v?0.1?2014年9月24日?下午5:13:48?Lenovo?Exp?$?
123. ?*/??
124. public?class?RemarkValidator?implements?Validator?{??
125. ??
126. ????/**?
127. ?????*?@see?com.cathy.demo.pattern.composite.Validator#hasChild()?
128. ?????*/??
129. ????public?boolean?hasChild()?{??
130. ????????return?false;??
131. ????}??
132. ??
133. ????/**?
134. ?????*?@see?com.cathy.demo.pattern.composite.Validator#validate(com.cathy.demo.pattern.composite.RemitModel)?
135. ?????*/??
136. ????public?boolean?validate(RemitModel?remitModel)?{??
137. ????????System.out.println("校验汇款附言通过");??
138. ????????return?true;??
139. ????}??
140. ??
141. ????/**?
142. ?????*?@see?com.cathy.demo.pattern.composite.Validator#addValidator(com.cathy.demo.pattern.composite.Validator)?
143. ?????*/??
144. ????public?void?addValidator(Validator?validator)?{??
145. ????????throw?new?UnsupportedOperationException("子节点，无法增加");??
146. ????}??
147. ??
148. }??
149. /**?
150. ?*?
151. ?*?@author?Lenovo?
152. ?*?@version?$Id:?BankAccountValidator.java,?v?0.1?2014年9月24日?下午5:17:28?Lenovo?Exp?$?
153. ?*/??
154. public?class?BankAccountValidator?implements?Validator?{??
155. ??
156. ????/**?
157. ?????*?@see?com.cathy.demo.pattern.composite.Validator#hasChild()?
158. ?????*/??
159. ????public?boolean?hasChild()?{??
160. ????????return?false;??
161. ????}??
162. ??
163. ????/**?
164. ?????*?@see?com.cathy.demo.pattern.composite.Validator#validate(com.cathy.demo.pattern.composite.RemitModel)?
165. ?????*/??
166. ????public?boolean?validate(RemitModel?remitModel)?{??
167. ????????System.out.println("通过银行账户的校验");??
168. ????????return?true;??
169. ????}??
170. ??
171. ????/**?
172. ?????*?@see?com.cathy.demo.pattern.composite.Validator#addValidator(com.cathy.demo.pattern.composite.Validator)?
173. ?????*/??
174. ????public?void?addValidator(Validator?validator)?{??
175. ????????throw?new?UnsupportedOperationException("当前为叶子节点");??
176. ????}??
177. ??
178. }??
179. /**?
180. ?*?
181. ?*?@author?Lenovo?
182. ?*?@version?$Id:?PayeeAddressValidator.java,?v?0.1?2014年9月24日?下午5:22:38?Lenovo?Exp?$?
183. ?*/??
184. public?class?PayeeAddressValidator?implements?Validator?{??
185. ??
186. ????/**?
187. ?????*?@see?com.cathy.demo.pattern.composite.Validator#hasChild()?
188. ?????*/??
189. ????public?boolean?hasChild()?{??
190. ????????return?false;??
191. ????}??
192. ??
193. ????/**?
194. ?????*?@see?com.cathy.demo.pattern.composite.Validator#validate(com.cathy.demo.pattern.composite.RemitModel)?
195. ?????*/??
196. ????public?boolean?validate(RemitModel?remitModel)?{??
197. ????????System.out.println("收款人地址校验通过");??
198. ????????return?true;??
199. ????}??
200. ??
201. ????/**?
202. ?????*?@see?com.cathy.demo.pattern.composite.Validator#addValidator(com.cathy.demo.pattern.composite.Validator)?
203. ?????*/??
204. ????public?void?addValidator(Validator?validator)?{??
205. ????????throw?new?UnsupportedOperationException("当前为叶子节点");??
206. ????}??
207. ??
208. }??

1. /**?
2. ?*?
3. ?*?@author?Lenovo?
4. ?*?@version?$Id:?Client.java,?v?0.1?2014年9月24日?下午5:15:23?Lenovo?Exp?$?
5. ?*/??
6. public?class?Client?{??
7. ??
8. ????/**?
9. ?????*?
10. ?????*?@param?args?
11. ?????*/??
12. ????public?static?void?main(String[]?args)?{??
13. ????????RemitModelValidator?remitModelValidator?=?new?RemitModelValidator();??
14. ????????remitModelValidator.addValidator(new?RemarkValidator());??
15. ????????remitModelValidator.addValidator(new?BankAccountValidator());??
16. ????????PayeeValidator?payeeValidator?=?new?PayeeValidator();??
17. ????????payeeValidator.addValidator(new?PayeeAddressValidator());??
18. ????????remitModelValidator.addValidator(payeeValidator);??
19. ????????remitModelValidator.validate(new?RemitModel());??
20. ????}??
21. ??
22. }??

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