Source Code Cross Referenced for AbstractPersistentObject.java in  » ERP-CRM-Financial » Personal-Finance-Manager » br » com » igor » db » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ERP CRM Financial » Personal Finance Manager » br.com.igor.db 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Created on 22/05/2004
003:         * 
004:         * Swing Components - visit http://sf.net/projects/gfd
005:         * 
006:         * Copyright (C) 2004  Igor Regis da Silva Simões
007:         * 
008:         * This program is free software; you can redistribute it and/or
009:         * modify it under the terms of the GNU General Public License
010:         * as published by the Free Software Foundation; either version 2
011:         * of the License, or (at your option) any later version.
012:         *
013:         * This program is distributed in the hope that it will be useful,
014:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
015:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016:         * GNU General Public License for more details.
017:         *
018:         * You should have received a copy of the GNU General Public License
019:         * along with this program; if not, write to the Free Software
020:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
021:         * 
022:         */
023:
024:        package br.com.igor.db;
025:
026:        import java.lang.reflect.Field;
027:        import java.lang.reflect.Modifier;
028:        import java.util.ArrayList;
029:        import java.util.HashMap;
030:        import java.util.Map;
031:
032:        /**
033:         * @author Igor Regis da Silva Simoes
034:         */
035:        public abstract class AbstractPersistentObject implements 
036:                PersistentObject {
037:            /**
038:             *
039:             */
040:            private SQLParser sqlParser = null;
041:
042:            /**
043:             *
044:             */
045:            protected boolean autoPk = true;
046:
047:            /**
048:             *
049:             */
050:            private static HashMap<String, ArrayList<String>> allColumns = new HashMap<String, ArrayList<String>>(
051:                    7);
052:
053:            /**
054:             * 
055:             */
056:            private static HashMap<String, ArrayList<String>> colunas = new HashMap<String, ArrayList<String>>(
057:                    7);
058:
059:            /**
060:             * 
061:             */
062:            private static HashMap<String, ArrayList<String>> pks = new HashMap<String, ArrayList<String>>(
063:                    2);
064:
065:            /**
066:             *
067:             */
068:            protected boolean[] crescente = null;
069:
070:            /**
071:             *
072:             */
073:            private ArrayList<CondicaoSQL> condicoesExtras = new ArrayList<CondicaoSQL>();
074:
075:            /**
076:             * 
077:             */
078:            private String resultadoDesejado = null;
079:
080:            /**
081:             *
082:             */
083:            private String dataBase = null;
084:
085:            /**
086:             * Dados a respeito da atual clausula de sql que será executada por este persistent object
087:             */
088:            private ParsedPreparedStatement currentStatement = new ParsedPreparedStatement();
089:
090:            /**
091:             *
092:             */
093:            public AbstractPersistentObject() {
094:                ArrayList<String> allColumns = new ArrayList<String>();
095:                allColumns.addAll(getColumnsName());
096:                allColumns.addAll(getPkNames());
097:
098:                crescente = new boolean[allColumns.size()];
099:
100:                for (int i = 0; i < crescente.length; i++) {
101:                    crescente[i] = true;
102:                }
103:                if (AbstractPersistentObject.allColumns.get(this .getClass()
104:                        .getName()) == null)
105:                    AbstractPersistentObject.allColumns.put(this .getClass()
106:                            .getName(), allColumns);
107:            }
108:
109:            /**
110:             * @see br.com.igor.db.PersistentObject#getInsertSQL()
111:             */
112:            public final String getInsertSQL() {
113:                if (autoPk)
114:                    currentStatement = getSqlParser().getInsertSQL(
115:                            getTableName(), getAsMap(), getColumnsName());
116:                else
117:                    currentStatement = getSqlParser().getInsertSQL(
118:                            getTableName(),
119:                            getAsMap(),
120:                            AbstractPersistentObject.allColumns.get(this 
121:                                    .getClass().getName()));
122:                return currentStatement.sql;
123:            }
124:
125:            /**
126:             * @see br.com.igor.db.PersistentObject#getUpdateSQL()
127:             */
128:            public final String getUpdateSQL() {
129:                if (autoPk)
130:                    currentStatement = getSqlParser().getUpdateSQL(
131:                            getTableName(), getAsMap(), getColumnsName(),
132:                            getPkNames());
133:                else
134:                    currentStatement = getSqlParser().getUpdateSQL(
135:                            getTableName(),
136:                            getAsMap(),
137:                            AbstractPersistentObject.allColumns.get(this 
138:                                    .getClass().getName()), getPkNames());
139:                return currentStatement.sql;
140:            }
141:
142:            /**
143:             * @see br.com.igor.db.PersistentObject#getSelectSQL()
144:             */
145:            public final String getSelectSQL() {
146:                condicoesExtras.trimToSize();
147:                currentStatement = getSqlParser().getSelectSQL(
148:                        resultadoDesejado,
149:                        getTableName(),
150:                        getAsMap(),
151:                        AbstractPersistentObject.allColumns.get(this .getClass()
152:                                .getName()), getOrderBy(), crescente,
153:                        condicoesExtras);
154:                return currentStatement.sql;
155:            }
156:
157:            /**
158:             * @see br.com.igor.db.PersistentObject#getDeleteSQL()
159:             */
160:            public final String getDeleteSQL() {
161:                currentStatement = getSqlParser().getDeleteSQL(
162:                        getTableName(),
163:                        getAsMap(),
164:                        AbstractPersistentObject.allColumns.get(this .getClass()
165:                                .getName()), condicoesExtras, getPkNames());
166:                return currentStatement.sql;
167:            }
168:
169:            public ArrayList<Object> getParametrosSQL() {
170:                ArrayList<Object> retorno = new ArrayList<Object>();
171:                for (CondicaoSQL<Object> condicao : condicoesExtras) {
172:                    if (condicao.getCondicao() != CondicaoSQL.Condicao.IS_NULL)
173:                        retorno.add(condicao.getValor());
174:                    if (condicao.getCondicao() == CondicaoSQL.Condicao.BETWEEN)
175:                        retorno.add(condicao.getValor_2());
176:                }
177:                retorno.addAll(currentStatement.params);
178:                currentStatement = new ParsedPreparedStatement();
179:                return retorno;
180:            }
181:
182:            /**
183:             * @see br.com.igor.db.PersistentObject#setOrderBy(java.lang.String[])
184:             */
185:            public final void setOrderBy(String[] columns) {
186:                boolean swap;
187:                ArrayList<String> allColumns = AbstractPersistentObject.allColumns
188:                        .get(getClass().getName());
189:
190:                for (int n = columns.length - 1; n >= 0; n--) {
191:                    for (int i = 0; i < allColumns.size(); i++) {
192:                        if (allColumns.get(i).toString().equals(columns[n])) {
193:                            swap = this .crescente[i];
194:
195:                            for (int j = i; j > 0; j--) {
196:                                String swap2 = allColumns.get(j - 1);
197:                                allColumns.set(j - 1, null);
198:                                allColumns.set(j, swap2);
199:                                this .crescente[j] = this .crescente[j - 1];
200:                            }
201:
202:                            allColumns.set(0, columns[n]);
203:                            this .crescente[0] = !swap;
204:                        }
205:                    }
206:
207:                }
208:                AbstractPersistentObject.allColumns.put(this .getClass()
209:                        .getName(), allColumns);
210:            }
211:
212:            /**
213:             * @see br.com.igor.db.PersistentObject#getOrderBy()
214:             */
215:            public final String[] getOrderBy() {
216:                ArrayList<String> allColumns = AbstractPersistentObject.allColumns
217:                        .get(this .getClass().getName());
218:                return allColumns.toArray(new String[allColumns.size()]);
219:            }
220:
221:            /*
222:             * @see br.com.igor.db.PersistentObject#addCondicaoExtra(java.lang.String)
223:             */
224:            public final void addCondicaoExtra(CondicaoSQL condicao) {
225:                condicoesExtras.add(condicao);
226:            }
227:
228:            /**
229:             * @see br.com.igor.db.PersistentObject#removeCondicaoExtra(java.lang.String)
230:             */
231:            public final void removeCondicaoExtra(CondicaoSQL condicao) {
232:                condicoesExtras.remove(condicao);
233:            }
234:
235:            /**
236:             * Retorna o parser a ser usado na formulação do sql.
237:             * @return SQLParser.
238:             */
239:            private SQLParser getSqlParser() {
240:                if (sqlParser == null)
241:                    sqlParser = SQLParserFactory.getSQLParserFactory()
242:                            .getParser(dataBase);
243:                return sqlParser;
244:            }
245:
246:            /**
247:             * @see br.com.igor.db.PersistentObject#setDataBase(java.lang.String)
248:             */
249:            public void setDataBase(String dataBase) {
250:                this .dataBase = dataBase;
251:            }
252:
253:            /**
254:             * @see java.lang.Object#toString()
255:             */
256:            @Override
257:            public String toString() {
258:                Map objetoMap = getAsMap();
259:                Object[] chaves = objetoMap.keySet().toArray();
260:
261:                String representacao = getTableName();
262:
263:                for (Object chave : chaves)
264:                    if (objetoMap.get(chave) != null)
265:                        representacao += ", " + chave + " = "
266:                                + objetoMap.get(chave);
267:
268:                return representacao;
269:            }
270:
271:            /**
272:             * @see br.com.igor.db.PersistentObject#getResultadoDesejado()
273:             */
274:            public String getResultadoDesejado() {
275:                return resultadoDesejado;
276:            }
277:
278:            /*
279:             * @see br.com.igor.db.PersistentObject#setResultadoDesejado(java.lang.String)
280:             */
281:            public void setResultadoDesejado(String resultadoDesejado) {
282:                this .resultadoDesejado = resultadoDesejado;
283:            }
284:
285:            /**
286:             * @see br.com.igor.db.PersistentObject#getColumnsName()
287:             */
288:            public final ArrayList<String> getColumnsName() {
289:                ArrayList<String> colunas = AbstractPersistentObject.colunas
290:                        .get(this .getClass().getName());
291:                if (colunas != null)
292:                    return colunas;
293:                colunas = new ArrayList<String>();
294:
295:                ArrayList<Field> fields = getAllDeclaredFields(Coluna.class);
296:                for (Field field : fields)
297:                    if (!field.getAnnotation(Coluna.class).isPk())
298:                        colunas.add(field.getAnnotation(Coluna.class).nome());
299:
300:                AbstractPersistentObject.colunas.put(this .getClass().getName(),
301:                        colunas);
302:                return colunas;
303:            }
304:
305:            /**
306:             * @see br.com.igor.db.PersistentObject#getPkNames()
307:             */
308:            public final ArrayList<String> getPkNames() {
309:                ArrayList<String> pks = AbstractPersistentObject.pks.get(this 
310:                        .getClass().getName());
311:                if (pks != null)
312:                    return pks;
313:                pks = new ArrayList<String>();
314:
315:                ArrayList<Field> fields = getAllDeclaredFields(Coluna.class);
316:                for (Field field : fields) {
317:                    Coluna coluna = field.getAnnotation(Coluna.class);
318:                    if (coluna.isPk()) {
319:                        pks.add(coluna.nome());
320:                    }
321:                }
322:
323:                AbstractPersistentObject.pks
324:                        .put(this .getClass().getName(), pks);
325:                return pks;
326:            }
327:
328:            /**
329:             * Retorna todos campos da calsse (incluindo superclasses) 
330:             * que possuam a anotação passada como parametro
331:             * @param annotation Anotação que os campos devem possuir para 
332:             *        retornarem no ArrayList
333:             * @return ArrayList com os atributos que atendem ao critério
334:             */
335:            private ArrayList<Field> getAllDeclaredFields(
336:                    Class<Coluna> annotation) {
337:                ArrayList<Field> fields = new ArrayList<Field>();
338:                Class<?> classe = getClass();
339:
340:                while (classe.isAnnotationPresent(Table.class)) {
341:                    Field[] campo = classe.getDeclaredFields();
342:                    for (int i = 0; i < campo.length; i++) {
343:                        campo[i].getAnnotation(Coluna.class);
344:                        if (campo[i].isAnnotationPresent(annotation)) {
345:                            fields.add(campo[i]);
346:                        }
347:                    }
348:                    classe = classe.getSuperclass();
349:                    if (classe == null)
350:                        throw new InvalidSubClassException(
351:                                "Your class must define a @Tabela anotation");
352:                }
353:                return fields;
354:            }
355:
356:            /**
357:             * @see br.com.igor.db.PersistentObject#getTableName()
358:             */
359:            public final String getTableName() {
360:                Class<?> classe = getClass();
361:                while (!classe.isAnnotationPresent(Table.class)) {
362:                    classe = classe.getSuperclass();
363:                    if (classe == null)
364:                        throw new InvalidSubClassException(
365:                                "Your class must define a @Tabela anotation");
366:                }
367:                return classe.getAnnotation(Table.class).name();
368:            }
369:
370:            /**
371:             * @see br.com.igor.db.PersistentObject#getAsMap()
372:             */
373:            public final Map<String, Object> getAsMap()
374:                    throws DataAccessException {
375:                HashMap<String, Object> dados = new HashMap<String, Object>();
376:                try {
377:                    ArrayList<Field> fields = getAllDeclaredFields(Coluna.class);
378:                    for (Field field : fields) {
379:                        Coluna colunaAnnotation = field
380:                                .getAnnotation(Coluna.class);
381:                        dados.put(colunaAnnotation.nome(), getClass()
382:                                .getMethod(colunaAnnotation.readMethodName(),
383:                                        new Class[] {}).invoke(this ,
384:                                        (Object[]) null));
385:                    }
386:                } catch (Exception e) {
387:                    throw new DataAccessException(
388:                            "Problemas ao converter objeto para Map.", e);
389:                }
390:                return dados;
391:            }
392:
393:            /**
394:             * @see br.com.igor.db.PersistentObject#setDados(java.util.Map)
395:             */
396:            public void setDados(Map<String, Object> dados)
397:                    throws DataAccessException {
398:                ArrayList<Field> fields = getAllDeclaredFields(Coluna.class);
399:                for (Field field : fields) {
400:                    try {
401:                        Coluna colunaAnnotation = field
402:                                .getAnnotation(Coluna.class);
403:
404:                        Object valor = null;
405:                        if ((valor = dados.get(colunaAnnotation.nome())) != null) {
406:                            //Os campos Float são uma exceção, caso nós não façamos a conversão 
407:                            //explicita a JVM vai tentar passá-lo como Double para o método causando uma exceção
408:                            if (field.getType().isAssignableFrom(Float.class))
409:                                getClass().getMethod(
410:                                        colunaAnnotation.writeMethodName(),
411:                                        Float.class).invoke(this ,
412:                                        Float.valueOf(valor.toString()));
413:                            else
414:                                getClass().getMethod(
415:                                        colunaAnnotation.writeMethodName(),
416:                                        field.getType()).invoke(this , valor);
417:                        }
418:                    } catch (Exception e) {
419:                        throw new DataAccessException(
420:                                "Problemas ao converter Map para objeto, campo: "
421:                                        + field.getName(), e);
422:                    }
423:                }
424:            }
425:
426:            /**
427:             * @param sql
428:             * @param incluirWhere
429:             * @param incluirOrderBy
430:             * @return String
431:             */
432:            public String getSQL(String sql, boolean incluirWhere,
433:                    boolean incluirOrderBy) {
434:                currentStatement = new ParsedPreparedStatement();
435:                if (incluirWhere) {
436:                    ParsedPreparedStatement temp = ((AbstractSQLParser) getSqlParser())
437:                            .getWhere(getAsMap(),
438:                                    AbstractPersistentObject.allColumns
439:                                            .get(this .getClass().getName()),
440:                                    " and ", condicoesExtras);
441:                    currentStatement.sql = sql
442:                            + " "
443:                            + temp.sql
444:                            + (incluirOrderBy ? ((AbstractSQLParser) getSqlParser())
445:                                    .getOrderBy(getOrderBy(), crescente)
446:                                    : "");
447:                    currentStatement.params = temp.params;
448:                } else {
449:                    currentStatement.sql = sql
450:                            + " "
451:                            + (incluirOrderBy ? ((AbstractSQLParser) getSqlParser())
452:                                    .getOrderBy(getOrderBy(), crescente)
453:                                    : "");
454:                }
455:                return getSqlParser().parse(currentStatement).sql;
456:            }
457:
458:            public void clearAllFields() {
459:                currentStatement = new ParsedPreparedStatement();
460:                ArrayList<Field> fields = new ArrayList<Field>();
461:                Class classe = getClass();
462:                while (classe != AbstractPersistentObject.class) {
463:                    Field[] campo = classe.getDeclaredFields();
464:                    for (int i = 0; i < campo.length; i++) {
465:                        fields.add(campo[i]);
466:                    }
467:                    classe = classe.getSuperclass();
468:                    if (classe == null)
469:                        throw new InvalidSubClassException(
470:                                "Your class must define a @Tabela anotation");
471:                }
472:
473:                for (int i = 0; i < fields.size(); i++) {
474:                    if (Modifier.isFinal(fields.get(i).getModifiers()))
475:                        continue;
476:                    fields.get(i).setAccessible(true);
477:                    try {
478:                        fields.get(i).set(this , null);
479:                    } catch (IllegalArgumentException e) {
480:                        // TODO Auto-generated catch block
481:                        e.printStackTrace();
482:                    } catch (IllegalAccessException e) {
483:                        // TODO Auto-generated catch block
484:                        e.printStackTrace();
485:                    }
486:                }
487:            }
488:        }
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