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1
30 package com.genimen.djeneric.tools.scriptengine.core.util;
31
32 import java.lang.reflect.Array  ;
33 import java.math.BigDecimal ;
34 import java.text.ParseException ;
35 import java.text.SimpleDateFormat ;
36 import java.util.Date ;
37
38 import com.genimen.djeneric.language.Messages;
39 import com.genimen.djeneric.repository.DjList;
40 import com.genimen.djeneric.repository.DjObject;
41 import com.genimen.djeneric.repository.exceptions.ObjectNotDefinedException;
42 import com.genimen.djeneric.tools.scriptengine.core.SimpleNode;
43
44 public class Variable
45 {
46 SimpleDateFormat _sdf = new SimpleDateFormat ("dd-MM-yyyy");
47
48 Object _obj;
49 String _name;
50 String _typeName = String .class.getName();
51 boolean _isList = false;
52
53 public Variable(String name, Object obj, String typeName)
54 {
55 _name = name;
56 setObject(obj);
57 _typeName = typeName;
58 }
59
60 public Variable(String name, Object obj)
61 {
62 _name = name;
63 setObject(obj);
64 }
65
66 public String toString()
67 {
68 return getName() + "=" + getObject();
69 }
70
71 public String getName()
72 {
73 return _name;
74 }
75
76 public Object getObject()
77 {
78 return _obj;
79 }
80
81 public Object getObject(int idx) throws DjScriptExecutionException
82 {
83 assertList();
84
85 if (_obj instanceof DjList) return ((DjList) _obj).get(idx);
86
87 return Array.get(_obj, idx);
88 }
89
90 public void setObject(Object obj)
91 {
92 if (obj != null) _typeName = obj.getClass().getName();
93 _obj = obj;
94 _isList = obj instanceof DjList;
95 if (_isList)
96 {
97 _typeName = ((DjList) _obj).getStoredType().getName();
98 }
99
100 }
101
102 public void assign(int idx, Object value, SimpleNode context) throws DjScriptExecutionException
103 {
104 assertList();
105
106 if (_obj instanceof DjList) ((DjList) _obj).set(idx, coerse(value, context));
107 else Array.set(_obj, idx, value);
108 }
109
110 private void assertList() throws DjScriptExecutionException
111 {
112 boolean l = _obj != null && (_obj instanceof DjList || _obj.getClass().isArray());
113 if (!l) throw new DjScriptExecutionException(Messages.getString("Variable.NotListOrArray", getName()));
114 }
115
116 public void assign(Object value, SimpleNode context) throws DjScriptExecutionException
117 {
118 _obj = coerse(value, context);
119 }
120
121 private Object coerse(Object value, SimpleNode context) throws DjScriptExecutionException
122 {
123 Object result = null;
124
125 if (value == null)
126 {
127 result = value;
128 }
129 else if (_typeName.equals(value.getClass().getName()))
130 {
131 result = value;
132 }
133 else if (_typeName.equals(Long .class.getName()))
134 {
135 result = new Long (value.toString());
136 }
137 else if (_typeName.equals(BigDecimal .class.getName()))
138 {
139 result = new BigDecimal (value.toString());
140 }
141 else if (_typeName.equals(Boolean .class.getName()))
142 {
143 result = new Boolean (value.toString());
144 }
145 else if (_typeName.equals(String .class.getName()))
146 {
147 result = value.toString();
148 }
149 else if (_typeName.equals(Date .class.getName()))
150 {
151 if (value instanceof Long )
152 {
153 result = new Date (((Long ) value).longValue());
154 }
155 else
156 {
157 try
158 {
159 result = _sdf.parse(value.toString());
160 }
161 catch (ParseException e)
162 {
163 throw new DjScriptExecutionException(e.getMessage(), context);
164 }
165 }
166 }
167 else if (value instanceof DjObject)
168 {
169 DjObject v = (DjObject) value;
170 try
171 {
172 if (v.isInstanceOf(_typeName)) result = value;
173 else throw new DjScriptExecutionException(Messages.getString("Variable.CannotAssign", v.getExtent()
174 .getObjectType(), _typeName), context);
175 }
176 catch (ObjectNotDefinedException e)
177 {
178 throw new DjScriptExecutionException(Messages.getString("Variable.UndefinedType", _typeName), context);
179 }
180 }
181 else if (value instanceof DjList)
182 {
183 DjList lst = (DjList) value;
184 if (_isList)
185 {
186 if (lst.getStoredType() != null && lst.getStoredType().isInstanceof(_typeName)) result = value;
187 else
188 {
189 String typeName = "[untyped]";
190 if (lst.getStoredType() != null) typeName = lst.getStoredType().getObjectType();
191
192 throw new DjScriptExecutionException(Messages.getString("Variable.CannotAssign", typeName, _typeName),
193 context);
194 }
195 }
196 else
197 {
198 if (lst.size() == 0) result = null;
199 else if (lst.size() == 1) result = lst.getDjenericObjectAt(0);
200 else throw new DjScriptExecutionException(Messages.getString("Variable.NotOneElement", getName()), context);
201 }
202 }
203 else
204 {
205 String val = "null";
206 if (value != null) val = value.getClass().getName();
207
208 throw new DjScriptExecutionException(Messages.getString("Variable.CannotAssign", val, _typeName), context);
209 }
210
211 return result;
212
213 }
214
215 public String getTypeName()
216 {
217 return _typeName;
218 }
219
220 public boolean isList()
221 {
222 return _isList;
223 }
224 } |
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