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1
17
18 package org.apache.geronimo.gbean.runtime;
19
20 import java.lang.reflect.Method  ;
21 import java.util.ArrayList ;
22 import java.util.Collections ;
23 import java.util.Iterator ;
24 import java.util.List ;
25
26 import org.apache.geronimo.gbean.DynamicGBean;
27 import org.apache.geronimo.gbean.DynamicGOperationInfo;
28 import org.apache.geronimo.gbean.GOperationInfo;
29 import org.apache.geronimo.gbean.InvalidConfigurationException;
30 import org.apache.geronimo.kernel.ClassLoading;
31
32
35 public final class GBeanOperation {
36 private final GBeanInstance gbeanInstance;
37 private final String name;
38 private final List parameterTypes;
39 private final MethodInvoker methodInvoker;
40 private final boolean framework;
41 private final GOperationInfo operationInfo;
42
43 static GBeanOperation createFrameworkOperation(GBeanInstance gbeanInstance, String name, List parameterTypes, MethodInvoker methodInvoker) {
45 return new GBeanOperation(gbeanInstance, name, parameterTypes, methodInvoker);
46 }
47
48 private GBeanOperation(GBeanInstance gbeanInstance, String name, List parameterTypes, MethodInvoker methodInvoker) {
49 framework = true;
50 this.gbeanInstance = gbeanInstance;
51 this.name = name;
52 this.parameterTypes = Collections.unmodifiableList(new ArrayList (parameterTypes));
53 this.methodInvoker = methodInvoker;
54 this.operationInfo = new GOperationInfo(this.name, this.parameterTypes, "java.lang.Object");
55 }
56
57 public GBeanOperation(GBeanInstance gbeanInstance, GOperationInfo operationInfo) throws InvalidConfigurationException {
58 framework = false;
59 this.gbeanInstance = gbeanInstance;
60 this.name = operationInfo.getName();
61 this.operationInfo = operationInfo;
62
63 this.parameterTypes = Collections.unmodifiableList(new ArrayList (operationInfo.getParameterList()));
65 Class [] types = new Class [parameterTypes.size()];
66 ClassLoader classLoader = gbeanInstance.getClassLoader();
67 for (int i = 0; i < types.length; i++) {
68 String type = (String ) parameterTypes.get(i);
69 try {
70 types[i] = ClassLoading.loadClass((String ) parameterTypes.get(i), classLoader);
71 } catch (ClassNotFoundException e) {
72 throw new InvalidConfigurationException("Could not load operation parameter class:" +
73 " name=" + operationInfo.getName() +
74 " class=" + type);
75 }
76 }
77
78 if (operationInfo instanceof DynamicGOperationInfo) {
80 methodInvoker = new MethodInvoker() {
81 private String [] types = (String []) parameterTypes.toArray(new String [parameterTypes.size()]);
82
83 public Object invoke(Object target, Object [] arguments) throws Exception {
84 DynamicGBean dynamicGBean = (DynamicGBean) target;
85 dynamicGBean.invoke(name, arguments, types);
86 return null;
87 }
88 };
89 } else {
90 try {
91 Method javaMethod = gbeanInstance.getType().getMethod(operationInfo.getMethodName(), types);
92 if (AbstractGBeanReference.NO_PROXY) {
93 methodInvoker = new ReflectionMethodInvoker(javaMethod);
94 } else {
95 methodInvoker = new FastMethodInvoker(javaMethod);
96 }
97 } catch (Exception e) {
98 throw new InvalidConfigurationException("Target does not have specified method (declared in a GBeanInfo operation):" +
99 " name=" + operationInfo.getName() +
100 " methodName=" + operationInfo.getMethodName() +
101 " returnType=" + operationInfo.getReturnType() +
102 " targetClass=" + gbeanInstance.getType().getName());
103 }
104 }
105 }
106
107 public String getName() {
108 return name;
109 }
110
111 public List getParameterTypes() {
112 return parameterTypes;
113 }
114
115 public GOperationInfo getOperationInfo() {
116 return operationInfo;
117 }
118
119 public boolean isFramework() {
120 return framework;
121 }
122
123 public Object invoke(Object target, final Object [] arguments) throws Exception {
124 return methodInvoker.invoke(target, arguments);
125 }
126
127 public String getDescription() {
128 String signature = name + "(";
129 for (Iterator iterator = parameterTypes.iterator(); iterator.hasNext();) {
130 String type = (String ) iterator.next();
131 signature += type;
132 if (iterator.hasNext()) {
133 signature += ", ";
134 }
135 }
136 signature += ")";
137 return "Operation Signature: " + signature + ", GBeanInstance: " + gbeanInstance.getName();
138 }
139 }
140 |
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