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56 package org.objectstyle.cayenne.dataview;
57
58 import java.util.*;
59 import java.lang.reflect.*;
60 import java.math.*;
61 import java.text.*;
62 import org.apache.commons.lang.math.NumberUtils;
63 import org.apache.commons.lang.*;
64 import org.apache.commons.lang.time.*;
65
66 public class DataTypeSpec {
67 protected Map dataTypeClassMap = new HashMap();
68 protected Format dateFormat = new SimpleDateFormat(
69 "yyyy-MM-dd",
70 Locale.US);
71 protected Format dateTimeFormat = new SimpleDateFormat(
72 "yyyy-MM-dd'T'HH:mm:ss",
73 Locale.US);
74
75 public DataTypeSpec() {
76 dataTypeClassMap.put(DataTypeEnum.BOOLEAN_TYPE, Boolean  .class);
77 dataTypeClassMap.put(DataTypeEnum.DATE_TYPE, Date.class);
78 dataTypeClassMap.put(DataTypeEnum.DATETIME_TYPE, Date.class);
79 dataTypeClassMap.put(DataTypeEnum.DOUBLE_TYPE, Double .class);
80 dataTypeClassMap.put(DataTypeEnum.INTEGER_TYPE, Long .class);
81 dataTypeClassMap.put(DataTypeEnum.MONEY_TYPE, Double .class);
82 dataTypeClassMap.put(DataTypeEnum.PERCENT_TYPE, Double .class);
83 dataTypeClassMap.put(DataTypeEnum.STRING_TYPE, String .class);
84 dataTypeClassMap.put(DataTypeEnum.OBJECT_TYPE, Object .class);
85 dataTypeClassMap.put(DataTypeEnum.UNKNOWN_TYPE, null);
86 }
87
88 public DataTypeEnum getDataType(String dataType) {
89 return DataTypeEnum.getEnum(dataType);
90 }
91
92 public DataTypeEnum getDataType(int dataType) {
93 return DataTypeEnum.getEnum(dataType);
94 }
95
96 public Class getJavaClass(DataTypeEnum dataType) {
97 return (Class )dataTypeClassMap.get(dataType);
98 }
99
100 public Object create(DataTypeEnum dataType) {
101 Class clazz = getJavaClass(dataType);
102 if (clazz != null) {
103 try {
104 Object value = clazz.newInstance();
105 if (DataTypeEnum.DATE_TYPE.equals(dataType))
106 value = DateUtils.truncate(value, Calendar.DATE);
107 return value;
108 }
109 catch (InstantiationException ex) {
110 return null;
111 }catch (IllegalAccessException ex) {
112 return null;
113 }
114 }
115 return null;
116 }
117
118 public Object create(DataTypeEnum dataType, String argument) {
119 Class clazz = getJavaClass(dataType);
120 if (clazz != null) {
121 try {
122 if (DataTypeEnum.DATE_TYPE.equals(dataType)) {
123 return dateFormat.parseObject(argument);
124 } else if (DataTypeEnum.DATETIME_TYPE.equals(dataType)) {
125 return dateTimeFormat.parseObject(argument);
126 }
127 Constructor strConstructor = clazz.getConstructor(new Class [] {String .class});
128 return strConstructor.newInstance(new Object [] {argument});
129 }
130 catch (ParseException ex) {
131 return null;
132 }
133 catch (NoSuchMethodException ex) {
134 return null;
135 }
136 catch (InvocationTargetException ex) {
137 return null;
138 }
139 catch (InstantiationException ex) {
140 return null;
141 }catch (IllegalAccessException ex) {
142 return null;
143 }
144 }
145 return null;
146 }
147
148 public Object create(DataTypeEnum dataType, Object [] arguments) {
149 if (arguments == null || arguments.length == 0)
150 return create(dataType);
151
152 Class clazz = getJavaClass(dataType);
153 if (clazz != null) {
154 try {
155 Class [] argTypes = new Class [arguments.length];
156 for (int i = 0; i < arguments.length; i++) {
157 argTypes[i] = arguments[i].getClass();
158 }
159
160 Constructor strConstructor = clazz.getConstructor(new Class [] {String .class});
161 return strConstructor.newInstance(arguments);
162 }
163 catch (NoSuchMethodException ex) {
164 return null;
165 }
166 catch (InvocationTargetException ex) {
167 return null;
168 }
169 catch (InstantiationException ex) {
170 return null;
171 }catch (IllegalAccessException ex) {
172 return null;
173 }
174 }
175 return null;
176 }
177
178 public Object toDataType(DataTypeEnum dataType, Object untypedValue) {
179 Class dataTypeClass = getJavaClass(dataType);
180 if (dataTypeClass == null ||
181 untypedValue == null ||
182 ClassUtils.isAssignable(untypedValue.getClass(), dataTypeClass)) {
183 if (DataTypeEnum.DATE_TYPE.equals(dataType) &&
184 Date.class.equals(dataTypeClass)) {
185 return DateUtils.truncate(untypedValue, Calendar.DATE);
186 }
187 return untypedValue;
188 }
189
190 Object v = null;
191 String strUntypedValue = null;
192 boolean isStringUntypedValue = untypedValue instanceof String ;
193 Number numUntypedValue = null;
194 boolean isNumberUntypedValue = untypedValue instanceof Number ;
195 if (isStringUntypedValue)
196 strUntypedValue = (String )untypedValue;
197 if (isNumberUntypedValue)
198 numUntypedValue = (Number )untypedValue;
199
200 switch (dataType.getValue()) {
201 case DataTypeEnum.BOOLEAN_TYPE_VALUE:
202 if (isNumberUntypedValue)
203 v = BooleanUtils.toBooleanObject(numUntypedValue.intValue());
204 else if (isStringUntypedValue)
205 v = BooleanUtils.toBooleanObject(strUntypedValue);
206 break;
207 case DataTypeEnum.INTEGER_TYPE_VALUE:
208 if (isNumberUntypedValue)
209 v = new Integer (numUntypedValue.intValue());
210 else if (isStringUntypedValue)
211 v = NumberUtils.createInteger(strUntypedValue);
212 break;
213 case DataTypeEnum.DOUBLE_TYPE_VALUE:
214 if (isNumberUntypedValue)
215 v = new Double (numUntypedValue.doubleValue());
216 else if (isStringUntypedValue)
217 v = NumberUtils.createDouble(strUntypedValue);
218 break;
219 case DataTypeEnum.STRING_TYPE_VALUE:
220 v = ObjectUtils.toString(untypedValue);
221 break;
222 case DataTypeEnum.DATE_TYPE_VALUE:
223 if (isNumberUntypedValue)
224 v = DateUtils.truncate(new Date(numUntypedValue.longValue()), Calendar.DATE);
225 break;
226 case DataTypeEnum.DATETIME_TYPE_VALUE:
227 if (isNumberUntypedValue)
228 v = new Date(numUntypedValue.longValue());
229 break;
230 case DataTypeEnum.MONEY_TYPE_VALUE:
231 if (isNumberUntypedValue)
232 v = new Double (numUntypedValue.doubleValue());
233 else if (isStringUntypedValue)
234 v = NumberUtils.createDouble(strUntypedValue);
235 break;
236 case DataTypeEnum.PERCENT_TYPE_VALUE:
237 if (isNumberUntypedValue)
238 v = new Double (numUntypedValue.doubleValue());
239 else if (isStringUntypedValue)
240 v = NumberUtils.createDouble(strUntypedValue);
241 break;
242 }
243 return v;
244 }
245
246 public Object fromDataType(
247 Class untypedValueClass,
248 DataTypeEnum dataType,
249 Object typedValue) {
250 if (typedValue == null)
251 return null;
252 Class dataTypeClass = getJavaClass(dataType);
253
255 if (untypedValueClass == null)
256 return typedValue;
257
258 if (ClassUtils.isAssignable(dataTypeClass, untypedValueClass))
259 return typedValue;
260
261 String strTypedValue = null;
262 boolean isStringTypedValue = typedValue instanceof String ;
263 Number numTypedValue = null;
264 boolean isNumberTypedValue = typedValue instanceof Number ;
265 Boolean boolTypedValue = null;
266 boolean isBooleanTypedValue = typedValue instanceof Boolean ;
267 Date dateTypedValue = null;
268 boolean isDateTypedValue = typedValue instanceof Date;
269
270 if (isStringTypedValue)
271 strTypedValue = (String )typedValue;
272 if (isNumberTypedValue)
273 numTypedValue = (Number )typedValue;
274 if (isBooleanTypedValue)
275 boolTypedValue = (Boolean )typedValue;
276 if (isDateTypedValue)
277 dateTypedValue = (Date)typedValue;
278
279 Object v = null;
280 if (String .class.equals(untypedValueClass)) {
281 v = ObjectUtils.toString(typedValue);
282 } else if (BigDecimal.class.equals(untypedValueClass)) {
283 if (isStringTypedValue)
284 v = NumberUtils.createBigDecimal(strTypedValue);
285 else if (isNumberTypedValue)
286 v = new BigDecimal(numTypedValue.doubleValue());
287 else if (isBooleanTypedValue)
288 v = new BigDecimal(
289 BooleanUtils.toInteger(boolTypedValue.booleanValue()));
290 else if (isDateTypedValue)
291 v = new BigDecimal(dateTypedValue.getTime());
292 } else if (Boolean .class.equals(untypedValueClass)) {
293 if (isStringTypedValue)
294 v = BooleanUtils.toBooleanObject(strTypedValue);
295 else if (isNumberTypedValue)
296 v = BooleanUtils.toBooleanObject(numTypedValue.intValue());
297 else if (isDateTypedValue)
298 v = BooleanUtils.toBooleanObject((int)dateTypedValue.getTime());
299 } else if (Byte .class.equals(untypedValueClass)) {
300 if (isStringTypedValue)
301 v = Byte.valueOf(strTypedValue);
302 else if (isNumberTypedValue)
303 v = new Byte (numTypedValue.byteValue());
304 else if (isBooleanTypedValue)
305 v = new Byte (
306 (byte)BooleanUtils.toInteger(boolTypedValue.booleanValue()));
307 else if (isDateTypedValue)
308 v = new Byte ((byte)dateTypedValue.getTime());
309 } else if (byte[].class.equals(untypedValueClass)) {
310 if (isStringTypedValue)
311 v = strTypedValue.getBytes();
312 } else if (Double .class.equals(untypedValueClass)) {
313 if (isStringTypedValue)
314 v = NumberUtils.createDouble(strTypedValue);
315 else if (isNumberTypedValue)
316 v = new Double (numTypedValue.doubleValue());
317 else if (isBooleanTypedValue)
318 v = new Double (
319 BooleanUtils.toInteger(boolTypedValue.booleanValue()));
320 else if (isDateTypedValue)
321 v = new Double (dateTypedValue.getTime());
322 } else if (Float .class.equals(untypedValueClass)) {
323 if (isStringTypedValue)
324 v = NumberUtils.createFloat(strTypedValue);
325 else if (isNumberTypedValue)
326 v = new Float (numTypedValue.floatValue());
327 else if (isBooleanTypedValue)
328 v = new Float (
329 BooleanUtils.toInteger(boolTypedValue.booleanValue()));
330 else if (isDateTypedValue)
331 v = new Float (dateTypedValue.getTime());
332 } else if (Integer .class.equals(untypedValueClass)) {
333 if (isStringTypedValue)
334 v = NumberUtils.createInteger(strTypedValue);
335 else if (isNumberTypedValue)
336 v = new Integer (numTypedValue.intValue());
337 else if (isBooleanTypedValue)
338 v = BooleanUtils.toIntegerObject(boolTypedValue.booleanValue());
339 else if (isDateTypedValue)
340 v = new Integer ((int)dateTypedValue.getTime());
341 } else if (Long .class.equals(untypedValueClass)) {
342 if (isStringTypedValue)
343 v = NumberUtils.createLong(strTypedValue);
344 else if (isNumberTypedValue)
345 v = new Long (numTypedValue.longValue());
346 else if (isBooleanTypedValue)
347 v = new Long (
348 BooleanUtils.toInteger(boolTypedValue.booleanValue()));
349 else if (isDateTypedValue)
350 v = new Long (dateTypedValue.getTime());
351 } else if (java.sql.Date .class.equals(untypedValueClass)) {
352 if (isNumberTypedValue)
353 v = new java.sql.Date (numTypedValue.longValue());
354 else if (isDateTypedValue)
355 v = new java.sql.Date (dateTypedValue.getTime());
356 } else if (java.sql.Time .class.equals(untypedValueClass)) {
357 if (isNumberTypedValue)
358 v = new java.sql.Time (numTypedValue.longValue());
359 else if (isDateTypedValue)
360 v = new java.sql.Time (dateTypedValue.getTime());
361 } else if (java.sql.Timestamp .class.equals(untypedValueClass)) {
362 if (isNumberTypedValue)
363 v = new java.sql.Timestamp (numTypedValue.longValue());
364 else if (isDateTypedValue)
365 v = new java.sql.Timestamp (dateTypedValue.getTime());
366 } else if (Date.class.equals(untypedValueClass)) {
367 if (isNumberTypedValue)
368 v = new Date(numTypedValue.longValue());
369 }
370 return v;
371 }
372 }
373 |
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