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1 package org.jicengine.element.impl;
2
3 import org.jicengine.operation.*;
4 import org.jicengine.element.VariableElement;
5 import org.jicengine.element.ElementException;
6
7
8
17 public class ElementExecutionFactory implements Factory {
18
19 private String  name;
20 private VariableElement result;
21 private Context elementContext;
22 private String [] parameterNames;
23 private Class [] parameterTypes;
24
25 public ElementExecutionFactory(String name, String [] parameterNames, Class [] parameterTypes, VariableElement result, Context elementContext)
26 {
27 this.name = name;
28 this.parameterNames = parameterNames;
29 this.parameterTypes = parameterTypes;
30 this.result = result;
31 this.elementContext = elementContext;
32 }
33
34 public Object invoke(Object [] arguments) throws OperationException
35 {
36 if( arguments.length != this.parameterNames.length ){
37 throw new OperationException("Factory '" + this.name + "' requires " + this.parameterNames.length + " arguments, got " + arguments.length);
38 }
39
40 Context executionContext = new LocalContext(this.name, this.elementContext);
41
42 for (int i = 0; i < arguments.length; i++) {
43 if( !org.jicengine.operation.ReflectionUtils.isAssignableFrom(parameterTypes[i], arguments[i].getClass()) ){
44 String expected = "";
45 String received = "";
46 for (int j = 0; j < this.parameterTypes.length; j++) {
47 expected += this.parameterTypes[j].getName();
48 received += arguments[j].getClass().getName();
49 if( j+1 < this.parameterTypes.length ){
50 expected += ", ";
51 received += ", ";
52 }
53 }
54 throw new OperationException(this.name + " expected (" + expected + "), got (" + received + ")");
55 }
56 executionContext.addObject(parameterNames[i],arguments[i]);
57 }
58
59 Object resultObject = null;
60 try {
61 resultObject = this.result.getValue(executionContext, null);
62 } catch (ElementException ex) {
63 throw new OperationException(ex.getMessage(),ex);
64 }
65 return resultObject;
66 }
67
68 public String toString()
69 {
70 return "factory '" + this.name + "'";
71 }
72 }
73 |
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