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1
21
22 package com.jaspersoft.jasperserver.api.common.service.impl;
23
24 import java.util.Comparator  ;
25 import java.util.Iterator ;
26 import java.util.Map ;
27 import java.util.SortedSet ;
28 import java.util.TreeSet ;
29
30 import org.apache.commons.logging.Log;
31 import org.apache.commons.logging.LogFactory;
32 import org.springframework.context.ApplicationContext;
33 import org.springframework.context.ApplicationContextAware;
34
35 import com.jaspersoft.jasperserver.api.JSException;
36 import com.jaspersoft.jasperserver.api.JSExceptionWrapper;
37 import com.jaspersoft.jasperserver.api.common.service.BeanForInterfaceFactory;
38
39
43 public class BeanForInterfaceFactoryImpl implements BeanForInterfaceFactory, ApplicationContextAware {
44 private static final Log log = LogFactory.getLog(BeanForInterfaceFactoryImpl.class);
45
46 private ApplicationContext ctx;
47
48 public void setApplicationContext(ApplicationContext ctx) {
49 this.ctx = ctx;
50 }
51
52 private final Comparator itfComparator = new Comparator () {
53 public int compare(Object o1, Object o2) {
54 Class itf1 = (Class ) o1;
55 Class itf2 = (Class ) o2;
56
57 if (itf1.equals(itf2)) {
58 return 0;
59 } else if (itf2.isAssignableFrom(itf1)) {
60 return -1;
61 } else if (itf1.isAssignableFrom(itf2)) {
62 return 1;
63 } else {
64 return itf1.getName().compareTo(itf2.getName());
65 }
66 }
67 };
68
69
72 public String getBeanName(Map interfaceToBeanMappings, Class itfClass) {
73 if (interfaceToBeanMappings == null) {
74 return null;
75 }
76
77 try {
79 SortedSet interfaces = new TreeSet (itfComparator);
80
81 for (Iterator it = interfaceToBeanMappings.keySet().iterator(); it.hasNext();) {
82 String itfName = (String ) it.next();
83 Class itf = Class.forName(itfName, true, Thread.currentThread().getContextClassLoader());
84 if (itf.isAssignableFrom(itfClass)) {
85 interfaces.add(itf);
86 }
87 }
88
89 if (!interfaces.isEmpty()) {
90 Class itf = (Class ) interfaces.iterator().next();
91 return (String ) interfaceToBeanMappings.get(itf.getName());
92 }
93 return null;
94 } catch (ClassNotFoundException e) {
95 log.error(e, e);
96 throw new JSExceptionWrapper(e);
97 }
98 }
99
100
103 public Object getBean(Map classToBeanMappings, Class _class) {
104
105 String beanName = getBeanName(classToBeanMappings, _class);
106
107
110 if (beanName == null) {
111 throw new JSException("No bean name found for interface: " + _class.getName());
112 }
113
114 Object bean = ctx.getBean(beanName);
115
116
119 if (bean == null) {
120 throw new JSException("No bean with name: " + beanName);
121 }
122
123 return bean;
124 }
125
126 }
127 |
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