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1
24 package org.riotfamily.common.web.transaction;
25
26 import javax.servlet.http.HttpServletRequest  ;
27 import javax.servlet.http.HttpServletResponse ;
28
29 import org.springframework.core.Ordered;
30 import org.springframework.transaction.PlatformTransactionManager;
31 import org.springframework.transaction.TransactionDefinition;
32 import org.springframework.transaction.TransactionStatus;
33 import org.springframework.transaction.support.DefaultTransactionDefinition;
34 import org.springframework.web.servlet.HandlerAdapter;
35 import org.springframework.web.servlet.ModelAndView;
36 import org.springframework.web.servlet.mvc.Controller;
37 import org.springframework.web.servlet.mvc.LastModified;
38
39
53 public class TransactionalControllerHandlerAdapter
54 implements HandlerAdapter, Ordered {
55
56 private PlatformTransactionManager transactionManager;
57
58 private int order = Integer.MAX_VALUE - 1;
59
60 public TransactionalControllerHandlerAdapter(
61 PlatformTransactionManager transactionManager) {
62
63 this.transactionManager = transactionManager;
64 }
65
66 public int getOrder() {
67 return this.order;
68 }
69
70 public void setOrder(int order) {
71 this.order = order;
72 }
73
74 public boolean supports(Object handler) {
75 return handler instanceof TransactionalController;
76 }
77
78 public ModelAndView handle(HttpServletRequest request,
79 HttpServletResponse response, Object handler)
80 throws Exception {
81
82 Controller controller = (Controller) handler;
83
84 DefaultTransactionDefinition def = new DefaultTransactionDefinition();
85 def.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
86
87 TransactionStatus status = transactionManager.getTransaction(def);
88 ModelAndView mv;
89 try {
90 mv = controller.handleRequest(request, response);
91 }
92 catch (Exception ex) {
93 transactionManager.rollback(status);
94 throw ex;
95 }
96 transactionManager.commit(status);
97 return mv;
98 }
99
100 public long getLastModified(HttpServletRequest request, Object handler) {
101 if (handler instanceof LastModified) {
102 return ((LastModified) handler).getLastModified(request);
103 }
104 return -1L;
105 }
106
107 }
108 |
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