svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / drivers / dbf / DBFDriver.java @ 6356
History | View | Annotate | Download (11.4 KB)
1 |
package com.iver.cit.gvsig.fmap.drivers.dbf; |
---|---|
2 |
|
3 |
import java.io.File; |
4 |
import java.io.FileInputStream; |
5 |
import java.io.FileNotFoundException; |
6 |
import java.io.FileOutputStream; |
7 |
import java.io.IOException; |
8 |
import java.io.RandomAccessFile; |
9 |
import java.nio.channels.FileChannel; |
10 |
import java.nio.channels.WritableByteChannel; |
11 |
import java.sql.Types; |
12 |
import java.text.DateFormat; |
13 |
import java.text.ParseException; |
14 |
import java.util.Date; |
15 |
import java.util.Locale; |
16 |
import java.util.Properties; |
17 |
|
18 |
import com.hardcode.gdbms.driver.DriverUtilities; |
19 |
import com.hardcode.gdbms.engine.data.DataSourceFactory; |
20 |
import com.hardcode.gdbms.engine.data.driver.DriverException; |
21 |
import com.hardcode.gdbms.engine.data.driver.FileDriver; |
22 |
import com.hardcode.gdbms.engine.data.edition.DataWare; |
23 |
import com.hardcode.gdbms.engine.data.file.FileDataWare; |
24 |
import com.hardcode.gdbms.engine.values.Value; |
25 |
import com.hardcode.gdbms.engine.values.ValueFactory; |
26 |
import com.iver.cit.gvsig.fmap.drivers.ITableDefinition; |
27 |
import com.iver.cit.gvsig.fmap.drivers.shp.DbaseFileHeaderNIO; |
28 |
import com.iver.cit.gvsig.fmap.drivers.shp.DbaseFileWriterNIO; |
29 |
import com.iver.cit.gvsig.fmap.edition.EditionException; |
30 |
import com.iver.cit.gvsig.fmap.edition.IRowEdited; |
31 |
import com.iver.cit.gvsig.fmap.edition.IWriteable; |
32 |
import com.iver.cit.gvsig.fmap.edition.IWriter; |
33 |
import com.iver.cit.gvsig.fmap.edition.writers.dbf.DbfWriter; |
34 |
|
35 |
|
36 |
/**
|
37 |
* DOCUMENT ME!
|
38 |
*
|
39 |
* @author Fernando Gonz?lez Cort?s
|
40 |
*/
|
41 |
public class DBFDriver implements FileDriver, IWriteable, IWriter { |
42 |
//private File file;
|
43 |
private static Locale ukLocale = new Locale("en", "UK"); // English, UK version |
44 |
private DbaseFile dbf = new DbaseFile(); |
45 |
private char[] fieldTypes; |
46 |
private DataSourceFactory dsf;
|
47 |
private DbfWriter dbfWriter = new DbfWriter(); |
48 |
private File file = null; |
49 |
private static String tempDirectoryPath = System.getProperty("java.io.tmpdir"); |
50 |
private File fTemp; |
51 |
|
52 |
|
53 |
/**
|
54 |
* @see com.hardcode.driverManager.Driver#getName()
|
55 |
*/
|
56 |
public String getName() { |
57 |
return "gdbms dbf driver"; |
58 |
} |
59 |
|
60 |
/**
|
61 |
* @see com.hardcode.gdbms.engine.data.GDBMSDriver#open(java.io.File)
|
62 |
*/
|
63 |
public void open(File file) throws IOException { |
64 |
this.file = file;
|
65 |
dbf.open(file); |
66 |
|
67 |
try {
|
68 |
fieldTypes = new char[getFieldCount()]; |
69 |
|
70 |
for (int i = 0; i < fieldTypes.length; i++) { |
71 |
fieldTypes[i] = dbf.getFieldType(i); |
72 |
} |
73 |
// dbfWriter.setFile(file);
|
74 |
} catch (DriverException e) {
|
75 |
throw new IOException(e.getMessage()); |
76 |
} |
77 |
|
78 |
} |
79 |
|
80 |
/**
|
81 |
* @see com.hardcode.gdbms.engine.data.GDBMSDriver#close()
|
82 |
*/
|
83 |
public void close() throws IOException { |
84 |
dbf.close(); |
85 |
} |
86 |
|
87 |
/**
|
88 |
* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getFieldValue(long,
|
89 |
* int)
|
90 |
*/
|
91 |
public Value getFieldValue(long rowIndex, int fieldId) |
92 |
throws DriverException {
|
93 |
// Field Type (C or M)
|
94 |
char fieldType = fieldTypes[fieldId];
|
95 |
|
96 |
if (fieldType == 'L') { |
97 |
return ValueFactory.createValue(dbf.getBooleanFieldValue(
|
98 |
(int) rowIndex, fieldId));
|
99 |
|
100 |
/* }else if (fieldType == 'N'){
|
101 |
String strValue = dbf.getStringFieldValue(rowIndex, fieldId);
|
102 |
long value = Long.parseLong(strValue);
|
103 |
if ((value > Integer.MIN_VALUE) && (value < Integer.MAX_VALUE)){
|
104 |
return new IntValue((int) value);
|
105 |
}else{
|
106 |
return new LongValue(value);
|
107 |
}
|
108 |
*/
|
109 |
} else if ((fieldType == 'F') || (fieldType == 'N')) { |
110 |
String strValue = dbf.getStringFieldValue((int) rowIndex, fieldId) |
111 |
.trim(); |
112 |
|
113 |
if (strValue.length() == 0) { |
114 |
return null; |
115 |
} |
116 |
double value=0; |
117 |
try{
|
118 |
value = Double.parseDouble(strValue);
|
119 |
}catch (Exception e) { |
120 |
return ValueFactory.createValue(0D); |
121 |
} |
122 |
return ValueFactory.createValue(value);
|
123 |
} else if (fieldType == 'C') { |
124 |
return ValueFactory.createValue(dbf.getStringFieldValue(
|
125 |
(int) rowIndex, fieldId).trim());
|
126 |
} else if (fieldType == 'D') { |
127 |
String date = dbf.getStringFieldValue((int) rowIndex, fieldId).trim(); |
128 |
// System.out.println(rowIndex + " data=" + date);
|
129 |
if (date.length() == 0) { |
130 |
return null; |
131 |
} |
132 |
|
133 |
String year = date.substring(0, 4); |
134 |
String month = date.substring(4, 6); |
135 |
String day = date.substring(6, 8); |
136 |
DateFormat df = DateFormat.getDateInstance(DateFormat.SHORT, ukLocale); |
137 |
/* Calendar c = Calendar.getInstance();
|
138 |
c.clear();
|
139 |
c.set(Integer.parseInt(year), Integer.parseInt(month),
|
140 |
Integer.parseInt(day));
|
141 |
c.set(Calendar.MILLISECOND, 0); */
|
142 |
String strAux = month + "/" + day + "/" + year; |
143 |
Date dat;
|
144 |
try {
|
145 |
dat = df.parse(strAux); |
146 |
} catch (ParseException e) { |
147 |
throw new DriverException("Bad Date Format"); |
148 |
} |
149 |
|
150 |
// System.out.println("numReg = " + rowIndex + " date:" + dat.getTime());
|
151 |
|
152 |
return ValueFactory.createValue(dat);
|
153 |
} else {
|
154 |
throw new DriverException("Unknown field type"); |
155 |
} |
156 |
} |
157 |
|
158 |
/**
|
159 |
* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getFieldCount()
|
160 |
*/
|
161 |
public int getFieldCount() throws DriverException { |
162 |
return dbf.getFieldCount();
|
163 |
} |
164 |
|
165 |
/**
|
166 |
* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getFieldName(int)
|
167 |
*/
|
168 |
public String getFieldName(int fieldId) throws DriverException { |
169 |
return dbf.getFieldName(fieldId);
|
170 |
} |
171 |
|
172 |
/**
|
173 |
* @see com.hardcode.gdbms.engine.data.driver.ReadAccess#getRowCount()
|
174 |
*/
|
175 |
public long getRowCount() throws DriverException { |
176 |
return dbf.getRecordCount();
|
177 |
} |
178 |
|
179 |
/**
|
180 |
* @see com.hardcode.gdbms.engine.data.driver.FileDriver#fileAccepted(java.io.File)
|
181 |
*/
|
182 |
public boolean fileAccepted(File f) { |
183 |
return f.getAbsolutePath().toUpperCase().endsWith("DBF"); |
184 |
} |
185 |
|
186 |
/**
|
187 |
* @see com.hardcode.gdbms.engine.data.driver.ObjectDriver#getFieldType(int)
|
188 |
*/
|
189 |
public int getFieldType(int i) throws DriverException { |
190 |
char fieldType = fieldTypes[i];
|
191 |
|
192 |
if (fieldType == 'L') { |
193 |
return Types.BOOLEAN; |
194 |
} else if ((fieldType == 'F') || (fieldType == 'N')) { |
195 |
if (dbf.getFieldDecimalLength(i)>0) |
196 |
return Types.DOUBLE; |
197 |
else
|
198 |
return Types.INTEGER; |
199 |
} else if (fieldType == 'C') { |
200 |
return Types.VARCHAR; |
201 |
} else if (fieldType == 'D') { |
202 |
return Types.DATE; |
203 |
} else {
|
204 |
throw new DriverException("Unknown field type"); |
205 |
} |
206 |
} |
207 |
|
208 |
/**
|
209 |
* @see com.hardcode.gdbms.engine.data.driver.DriverCommons#setDataSourceFactory(com.hardcode.gdbms.engine.data.DataSourceFactory)
|
210 |
*/
|
211 |
public void setDataSourceFactory(DataSourceFactory dsf) { |
212 |
this.dsf = dsf;
|
213 |
} |
214 |
|
215 |
private void writeToTemp(DataWare dataWare, File file) throws DriverException { |
216 |
DbaseFileWriterNIO dbfWrite = null;
|
217 |
DbaseFileHeaderNIO myHeader; |
218 |
Value[] record;
|
219 |
|
220 |
try {
|
221 |
myHeader = DbaseFileHeaderNIO.createDbaseHeader(dataWare); |
222 |
|
223 |
myHeader.setNumRecords((int) dataWare.getRowCount());
|
224 |
dbfWrite = new DbaseFileWriterNIO(myHeader,
|
225 |
(FileChannel) getWriteChannel(file.getPath()));
|
226 |
record = new Value[dataWare.getFieldCount()];
|
227 |
|
228 |
for (int j = 0; j < dataWare.getRowCount(); j++) { |
229 |
for (int r = 0; r < dataWare.getFieldCount(); r++) { |
230 |
record[r] = dataWare.getFieldValue(j, r); |
231 |
} |
232 |
|
233 |
dbfWrite.write(record); |
234 |
} |
235 |
|
236 |
dbfWrite.close(); |
237 |
} catch (IOException e) { |
238 |
throw new DriverException(e); |
239 |
} |
240 |
|
241 |
} |
242 |
|
243 |
/**
|
244 |
* @see com.hardcode.gdbms.engine.data.driver.FileDriver#writeFile(com.hardcode.gdbms.engine.data.file.FileDataWare,
|
245 |
* java.io.File)
|
246 |
*/
|
247 |
public void writeFile(FileDataWare dataWare) |
248 |
throws DriverException {
|
249 |
|
250 |
String temp = dsf.getTempFile();
|
251 |
|
252 |
writeToTemp(dataWare, new File(temp)); |
253 |
|
254 |
try {
|
255 |
FileChannel fcout = dbf.getWriteChannel();
|
256 |
FileChannel fcin = new FileInputStream(temp).getChannel(); |
257 |
|
258 |
DriverUtilities.copy(fcin, fcout); |
259 |
} catch (IOException e) { |
260 |
throw new DriverException(e); |
261 |
} |
262 |
} |
263 |
|
264 |
/**
|
265 |
* DOCUMENT ME!
|
266 |
*
|
267 |
* @param path DOCUMENT ME!
|
268 |
*
|
269 |
* @return DOCUMENT ME!
|
270 |
*
|
271 |
* @throws IOException DOCUMENT ME!
|
272 |
*/
|
273 |
private WritableByteChannel getWriteChannel(String path) |
274 |
throws IOException { |
275 |
WritableByteChannel channel;
|
276 |
|
277 |
File f = new File(path); |
278 |
|
279 |
if (!f.exists()) {
|
280 |
System.out.println("Creando fichero " + f.getAbsolutePath()); |
281 |
|
282 |
if (!f.createNewFile()) {
|
283 |
throw new IOException("Cannot create file " + f); |
284 |
} |
285 |
} |
286 |
|
287 |
RandomAccessFile raf = new RandomAccessFile(f, "rw"); |
288 |
channel = raf.getChannel(); |
289 |
|
290 |
return channel;
|
291 |
} |
292 |
|
293 |
public void createSource(String arg0, String[] arg1, int[] arg2) throws IOException { |
294 |
DbaseFileHeaderNIO myHeader; |
295 |
|
296 |
int[] lengths = new int[arg2.length]; |
297 |
for (int i = 0; i < arg2.length; i++) { |
298 |
lengths[i] = 100;
|
299 |
} |
300 |
myHeader = DbaseFileHeaderNIO.createDbaseHeader(arg1, arg2, lengths); |
301 |
myHeader.setNumRecords(0);
|
302 |
DbaseFileWriterNIO dbfWrite = new DbaseFileWriterNIO(myHeader,
|
303 |
(FileChannel) getWriteChannel(arg0));
|
304 |
dbfWrite = new DbaseFileWriterNIO(myHeader,
|
305 |
(FileChannel) getWriteChannel(arg0));
|
306 |
} |
307 |
|
308 |
public int getFieldWidth(int i) throws DriverException { |
309 |
return dbf.getFieldLength(i);
|
310 |
} |
311 |
|
312 |
public IWriter getWriter() {
|
313 |
return this; |
314 |
} |
315 |
|
316 |
public void preProcess() throws EditionException { |
317 |
dbfWriter.preProcess(); |
318 |
|
319 |
} |
320 |
|
321 |
public void process(IRowEdited row) throws EditionException { |
322 |
dbfWriter.process(row); |
323 |
|
324 |
} |
325 |
|
326 |
public void postProcess() throws EditionException { |
327 |
dbfWriter.postProcess(); |
328 |
try {
|
329 |
// Dbf
|
330 |
File dbfFile = fTemp;
|
331 |
FileChannel fcinDbf = new FileInputStream(dbfFile).getChannel(); |
332 |
FileChannel fcoutDbf = new FileOutputStream(file).getChannel(); |
333 |
DriverUtilities.copy(fcinDbf, fcoutDbf); |
334 |
|
335 |
// Borramos los temporales
|
336 |
fTemp.delete(); |
337 |
|
338 |
// Reload
|
339 |
close(); |
340 |
open(file); |
341 |
|
342 |
|
343 |
|
344 |
} catch (FileNotFoundException e) { |
345 |
throw new EditionException(e); |
346 |
} catch (IOException e) { |
347 |
throw new EditionException(e); |
348 |
} |
349 |
|
350 |
|
351 |
} |
352 |
|
353 |
public String getCapability(String capability) { |
354 |
return dbfWriter.getCapability(capability);
|
355 |
} |
356 |
|
357 |
public void setCapabilities(Properties capabilities) { |
358 |
dbfWriter.setCapabilities(capabilities); |
359 |
|
360 |
} |
361 |
|
362 |
public boolean canWriteAttribute(int sqlType) { |
363 |
return dbfWriter.canWriteAttribute(sqlType);
|
364 |
} |
365 |
|
366 |
public void initialize(ITableDefinition tableDefinition) throws EditionException { |
367 |
int aux = (int)(Math.random() * 1000); |
368 |
fTemp = new File(tempDirectoryPath + "/tmpDbf" + aux + ".dbf"); |
369 |
dbfWriter.setFile(fTemp); |
370 |
dbfWriter.initialize(tableDefinition); |
371 |
|
372 |
} |
373 |
|
374 |
public ITableDefinition getTableDefinition() {
|
375 |
return dbfWriter.getTableDefinition();
|
376 |
} |
377 |
|
378 |
public boolean canAlterTable() { |
379 |
return true; |
380 |
} |
381 |
|
382 |
} |