1 | /** |
---|
2 | * This software is copyright (c) 2012 by |
---|
3 | * - TXM (http://txm.sourceforge.net/), Seminar fuer Sprachwissenschaft (http://www.sfs.uni-tuebingen.de/) |
---|
4 | * This is free software. You can redistribute it |
---|
5 | * and/or modify it under the terms described in |
---|
6 | * the GNU General Public License v3 of which you |
---|
7 | * should have received a copy. Otherwise you can download |
---|
8 | * it from |
---|
9 | * |
---|
10 | * http://www.gnu.org/licenses/gpl-3.0.txt |
---|
11 | * |
---|
12 | * @copyright Seminar fuer Sprachwissenschaft (http://www.sfs.uni-tuebingen.de/) |
---|
13 | * |
---|
14 | * @license http://www.gnu.org/licenses/gpl-3.0.txt |
---|
15 | * GNU General Public License v3 |
---|
16 | */ |
---|
17 | package eu.clarin.sru.cqibridge; |
---|
18 | |
---|
19 | import java.io.*; |
---|
20 | import java.net.InetSocketAddress; |
---|
21 | import java.net.Socket; |
---|
22 | import java.net.SocketAddress; |
---|
23 | import java.nio.charset.Charset; |
---|
24 | |
---|
25 | /** |
---|
26 | * This class implements a Java CQi client. |
---|
27 | * |
---|
28 | * @author Jean-Philippe Magué |
---|
29 | */ |
---|
30 | public class CqiClient { |
---|
31 | |
---|
32 | private static final byte[] CQI_PADDING = {(byte) 0x00}; |
---|
33 | private static final byte[] CQI_STATUS_OK = {(byte) 0x01, (byte) 0x01}; |
---|
34 | private static final byte[] CQI_STATUS_CONNECT_OK = {(byte) 0x01, (byte) 0x02}; |
---|
35 | private static final byte[] CQI_STATUS_BYE_OK = {(byte) 0x01, (byte) 0x03}; |
---|
36 | private static final byte[] CQI_STATUS_PING_OK = {(byte) 0x01, (byte) 0x04}; |
---|
37 | private static final byte[] CQI_DATA_BYTE = {(byte) 0x03, (byte) 0x01}; |
---|
38 | private static final byte[] CQI_DATA_BOOL = {(byte) 0x03, (byte) 0x02}; |
---|
39 | private static final byte[] CQI_DATA_INT = {(byte) 0x03, (byte) 0x03}; |
---|
40 | private static final byte[] CQI_DATA_STRING = {(byte) 0x03, (byte) 0x04}; |
---|
41 | private static final byte[] CQI_DATA_BYTE_LIST = {(byte) 0x03, (byte) 0x05}; |
---|
42 | private static final byte[] CQI_DATA_BOOL_LIST = {(byte) 0x03, (byte) 0x06}; |
---|
43 | private static final byte[] CQI_DATA_INT_LIST = {(byte) 0x03, (byte) 0x07}; |
---|
44 | private static final byte[] CQI_DATA_STRING_LIST = {(byte) 0x03, (byte) 0x08}; |
---|
45 | private static final byte[] CQI_DATA_INT_INT = {(byte) 0x03, (byte) 0x09}; |
---|
46 | private static final byte[] CQI_DATA_INT_INT_INT_INT = {(byte) 0x03, (byte) 0x0A}; |
---|
47 | private static final byte[] CQI_DATA_INT_TABLE = {(byte) 0x03, (byte) 0x0B}; |
---|
48 | private static final byte[] CQI_CTRL_CONNECT = {(byte) 0x11, (byte) 0x01}; |
---|
49 | private static final byte[] CQI_CTRL_BYE = {(byte) 0x11, (byte) 0x02}; |
---|
50 | private static final byte[] CQI_CTRL_LAST_GENERAL_ERROR = {(byte) 0x11, (byte) 0x05}; |
---|
51 | private static final byte[] CQI_CTRL_LAST_CQP_ERROR = {(byte) 0x11, (byte) 0x06}; |
---|
52 | private static final byte[] CQI_CORPUS_LIST_CORPORA = {(byte) 0x13, (byte) 0x01}; |
---|
53 | private static final byte[] CQI_CORPUS_CHARSET = {(byte) 0x13, (byte) 0x03}; |
---|
54 | private static final byte[] CQI_CORPUS_POSITIONAL_ATTRIBUTES = {(byte) 0x13, (byte) 0x05}; |
---|
55 | private static final byte[] CQI_CORPUS_STRUCTURAL_ATTRIBUTES = {(byte) 0x13, (byte) 0x06}; |
---|
56 | private static final byte[] CQI_CORPUS_STRUCTURAL_ATTRIBUTE_HAS_VALUES = {(byte) 0x13, (byte) 0x07}; |
---|
57 | private static final byte[] CQI_CORPUS_FULL_NAME = {(byte) 0x13, (byte) 0x09}; |
---|
58 | private static final byte[] CQI_CL_ATTRIBUTE_SIZE = {(byte) 0x14, (byte) 0x01}; |
---|
59 | private static final byte[] CQI_CL_LEXICON_SIZE = {(byte) 0x14, (byte) 0x02}; |
---|
60 | private static final byte[] CQI_CL_CPOS2STR = {(byte) 0x14, (byte) 0x08}; |
---|
61 | private static final byte[] CQI_CL_CPOS2LBOUND = {(byte) 0x14, (byte) 0x20}; |
---|
62 | private static final byte[] CQI_CL_CPOS2RBOUND = {(byte) 0x14, (byte) 0x21}; |
---|
63 | private static final byte[] CQI_CQP_QUERY = {(byte) 0x15, (byte) 0x01}; |
---|
64 | private static final byte[] CQI_CQP_LIST_SUBCORPORA = {(byte) 0x15, (byte) 0x02}; |
---|
65 | private static final byte[] CQI_CQP_SUBCORPUS_SIZE = {(byte) 0x15, (byte) 0x03}; |
---|
66 | private static final byte[] CQI_CQP_SUBCORPUS_HAS_FIELD = {(byte) 0x15, (byte) 0x04}; |
---|
67 | private static final byte[] CQI_CQP_DUMP_SUBCORPUS = {(byte) 0x15, (byte) 0x05}; |
---|
68 | private static final byte[] CQI_CQP_DROP_SUBCORPUS = {(byte) 0x15, (byte) 0x09}; |
---|
69 | private static final Charset DEFAULT_CHARSET = Charset.forName("ASCII"); |
---|
70 | public static final byte CQI_CONST_FIELD_MATCH = (byte) 0x10; |
---|
71 | public static final byte CQI_CONST_FIELD_MATCHEND = (byte) 0x11; |
---|
72 | public static final byte CQI_CONST_FIELD_TARGET = (byte) 0x00; |
---|
73 | /** |
---|
74 | * Error messages |
---|
75 | */ |
---|
76 | private static final String UNEXPECTED_ANSWER = "Unexpected answer"; |
---|
77 | private static final String SERVER_NOT_FOUND = "Server not found"; |
---|
78 | private static final String INTERNAL_ERROR = "Internal error"; |
---|
79 | private static final String INTERNAL_CQI_ERROR = "Internal CQI error"; |
---|
80 | private static final String INTERNAL_CQP_ERROR = "Internal CQP error"; |
---|
81 | private static final String INTERNAL_CL_ERROR = "Internal CL error"; |
---|
82 | private static final String OUT_OF_MEMORY_ERROR = "Out of memory"; |
---|
83 | private static final String CORPUS_ACCESS_ERROR = "Corpus access error"; |
---|
84 | private static final String WRONG_ATTRIBUTE_TYPE_ERROR = "Wrong attribute type"; |
---|
85 | private static final String OUT_OF_RANGE_ERROR = "Out of range"; |
---|
86 | private static final String REGEX_ERROR = "Regex error"; |
---|
87 | private static final String NO_SUCH_ATTRIBUTE_ERROR = "No such attribute"; |
---|
88 | private static final String NO_SUCH_CORPUS_CQP_ERROR = "No such corpus"; |
---|
89 | private static final String INVALID_FIELD_CQP_ERROR = "Invalid field"; |
---|
90 | private static final String OUT_OF_RANGE_CQP_ERROR = "Out of range"; |
---|
91 | private static final String SYNTAX_CQP_ERROR = "CQP Syntax error"; |
---|
92 | private static final String GENERAL_SQP_ERROR = "General CQP error"; |
---|
93 | private static final String CONNECTION_REFUSED_ERROR = "Connection refused"; |
---|
94 | private static final String USER_ABORT_ERROR = "User abort"; |
---|
95 | private static final String SYNTAX_ERROR = "Syntax error"; |
---|
96 | private static final String GENERAL_ERROR = "General error"; |
---|
97 | private static final String INSUFFICIENT_BUFFER_SIZE = "Insufficient buffer size"; |
---|
98 | private static final String SERVER_IO_ERROR = "IO Error while communicating to the server"; |
---|
99 | private static final int BUFFER_SIZE = 40; |
---|
100 | private Socket socket; |
---|
101 | private SocketAddress serverAddress; |
---|
102 | private DataOutput streamToServer; |
---|
103 | private DataInput streamFromServer; |
---|
104 | private final byte[] buffer = new byte[BUFFER_SIZE]; |
---|
105 | |
---|
106 | /** |
---|
107 | * Instantiates a new cqi client. |
---|
108 | * |
---|
109 | * @param host the host of the CQI server |
---|
110 | * @param port the port of the CQI server |
---|
111 | * |
---|
112 | * @throws CqiClientException the server not found exception |
---|
113 | */ |
---|
114 | public CqiClient(String host, int port) throws CqiClientException { |
---|
115 | try { |
---|
116 | this.socket = new Socket(); |
---|
117 | this.serverAddress = new InetSocketAddress(host, port); |
---|
118 | this.socket.connect(serverAddress); |
---|
119 | this.streamToServer = new DataOutputStream(this.socket.getOutputStream()); |
---|
120 | this.streamFromServer = new DataInputStream(this.socket.getInputStream()); |
---|
121 | } catch (IOException e) { |
---|
122 | throw new CqiClientException(SERVER_NOT_FOUND, e); |
---|
123 | } |
---|
124 | } |
---|
125 | |
---|
126 | /** |
---|
127 | * Connect the client to a server |
---|
128 | * |
---|
129 | * @param username the username |
---|
130 | * @param password the password |
---|
131 | * @return true, if successful |
---|
132 | * @throws CqiClientException |
---|
133 | */ |
---|
134 | public synchronized boolean connect(String username, String password) |
---|
135 | throws CqiClientException { |
---|
136 | try { |
---|
137 | this.streamToServer.write(CQI_CTRL_CONNECT); |
---|
138 | this.writeString(username); |
---|
139 | this.writeString(password); |
---|
140 | return (readHeaderFromServer() == CQI_STATUS_CONNECT_OK); |
---|
141 | } catch (IOException ex) { |
---|
142 | throw new CqiClientException(SERVER_IO_ERROR, ex); |
---|
143 | } |
---|
144 | } |
---|
145 | |
---|
146 | /** |
---|
147 | * Disconnect |
---|
148 | * |
---|
149 | * @return true, if successful |
---|
150 | * |
---|
151 | * @throws CqiClientException |
---|
152 | */ |
---|
153 | public synchronized boolean disconnect() throws CqiClientException { |
---|
154 | try { |
---|
155 | this.streamToServer.write(CQI_CTRL_BYE); |
---|
156 | return (readHeaderFromServer() == CQI_STATUS_BYE_OK); |
---|
157 | } catch (IOException ex) { |
---|
158 | throw new CqiClientException(SERVER_IO_ERROR, ex); |
---|
159 | } |
---|
160 | } |
---|
161 | |
---|
162 | /** |
---|
163 | * Lists the corpora available on the server |
---|
164 | * |
---|
165 | * @return the name of the corpora |
---|
166 | * @throws CqiClientException |
---|
167 | */ |
---|
168 | public synchronized String[] listCorpora() throws CqiClientException { |
---|
169 | try { |
---|
170 | this.streamToServer.write(CQI_CORPUS_LIST_CORPORA); |
---|
171 | return readStringArray(DEFAULT_CHARSET); |
---|
172 | } catch (IOException e) { |
---|
173 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
174 | } |
---|
175 | } |
---|
176 | |
---|
177 | /** |
---|
178 | * Gives the corpus positional attributes. |
---|
179 | * |
---|
180 | * @param corpusID the corpus id |
---|
181 | * @return the name of the attributes |
---|
182 | * @throws CqiClientException |
---|
183 | */ |
---|
184 | public synchronized String[] corpusPositionalAttributes(String corpus) |
---|
185 | throws CqiClientException { |
---|
186 | return genericStringToStringArray(corpus, |
---|
187 | CQI_CORPUS_POSITIONAL_ATTRIBUTES); |
---|
188 | } |
---|
189 | |
---|
190 | /** |
---|
191 | * Gives the corpus structural attributes. |
---|
192 | * |
---|
193 | * @param corpus the corpus |
---|
194 | * @return the name of the attributes |
---|
195 | * @throws CqiClientException |
---|
196 | */ |
---|
197 | public synchronized String[] corpusStructuralAttributes(String corpus) |
---|
198 | throws CqiClientException { |
---|
199 | return genericStringToStringArray(corpus, |
---|
200 | CQI_CORPUS_STRUCTURAL_ATTRIBUTES); |
---|
201 | } |
---|
202 | |
---|
203 | /** |
---|
204 | * Check whether a structural attribute has values |
---|
205 | * |
---|
206 | * @param attribute the attribute |
---|
207 | * @return true, if it has values |
---|
208 | * @throws CqiClientException |
---|
209 | */ |
---|
210 | public synchronized boolean corpusStructuralAttributeHasValues( |
---|
211 | String attribute) throws CqiClientException { |
---|
212 | try { |
---|
213 | this.streamToServer.write(CQI_CORPUS_STRUCTURAL_ATTRIBUTE_HAS_VALUES); |
---|
214 | this.writeString(attribute); |
---|
215 | return readBoolean(); |
---|
216 | } catch (IOException e) { |
---|
217 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
218 | } |
---|
219 | } |
---|
220 | |
---|
221 | /** |
---|
222 | * Write a string on the socket. |
---|
223 | * |
---|
224 | * @param string the string |
---|
225 | * |
---|
226 | * @throws IOException Signals that an I/O exception has occurred. |
---|
227 | */ |
---|
228 | private synchronized void writeString(String string, Charset charset) throws IOException { |
---|
229 | byte[] bytes = string.getBytes(charset); |
---|
230 | this.streamToServer.writeShort(bytes.length); |
---|
231 | this.streamToServer.write(bytes); |
---|
232 | } |
---|
233 | |
---|
234 | private synchronized void writeString(String string) throws IOException { |
---|
235 | writeString(string, DEFAULT_CHARSET); |
---|
236 | } |
---|
237 | |
---|
238 | /** |
---|
239 | * Write int array on the socket. |
---|
240 | * |
---|
241 | * @param ints the int array |
---|
242 | * |
---|
243 | * @throws IOException Signals that an I/O exception has occurred. |
---|
244 | */ |
---|
245 | private synchronized void writeIntArray(int[] ints) throws IOException { |
---|
246 | int length = ints.length; |
---|
247 | this.streamToServer.writeInt(length); |
---|
248 | for (int i = 0; i < length; i++) { |
---|
249 | // System.out.println(i+"/"+length); |
---|
250 | this.streamToServer.writeInt(ints[i]); |
---|
251 | } |
---|
252 | } |
---|
253 | |
---|
254 | /** |
---|
255 | * Write int array on the socket. |
---|
256 | * |
---|
257 | * @param ints the int array |
---|
258 | * |
---|
259 | * @throws IOException Signals that an I/O exception has occurred. |
---|
260 | */ |
---|
261 | private synchronized void writeIntArray(int[] ints, int length) throws IOException { |
---|
262 | this.streamToServer.writeInt(length); |
---|
263 | for (int i = 0; i < length; i++) { |
---|
264 | this.streamToServer.writeInt(ints[i]); |
---|
265 | } |
---|
266 | } |
---|
267 | |
---|
268 | /** |
---|
269 | * Read a string from the socket. |
---|
270 | * |
---|
271 | * @return the string |
---|
272 | * |
---|
273 | * @throws CqiClientException Signals that the data read on the socket is |
---|
274 | * unexpected |
---|
275 | * @throws IOException Signals that an I/O exception has occurred. |
---|
276 | */ |
---|
277 | private synchronized String readString(Charset charset) throws |
---|
278 | CqiClientException, IOException { |
---|
279 | if (readHeaderFromServer() != CQI_DATA_STRING) { |
---|
280 | throw new CqiClientException(UNEXPECTED_ANSWER); |
---|
281 | } |
---|
282 | short length = this.streamFromServer.readShort(); |
---|
283 | byte[] bytes = new byte[length]; |
---|
284 | this.streamFromServer.readFully(bytes); |
---|
285 | String res = new String(bytes, charset); |
---|
286 | return res; |
---|
287 | } |
---|
288 | |
---|
289 | private synchronized String readString() throws |
---|
290 | CqiClientException, IOException { |
---|
291 | return readString(DEFAULT_CHARSET); |
---|
292 | } |
---|
293 | |
---|
294 | /** |
---|
295 | * Read a boolean from the socket. |
---|
296 | * |
---|
297 | * @return the boolean |
---|
298 | * |
---|
299 | * @throws CqiClientException |
---|
300 | */ |
---|
301 | private synchronized boolean readBoolean() throws CqiClientException, |
---|
302 | IOException { |
---|
303 | if (readHeaderFromServer() != CQI_DATA_BOOL) { |
---|
304 | throw new CqiClientException(UNEXPECTED_ANSWER); |
---|
305 | } |
---|
306 | return this.streamFromServer.readByte() == 1; |
---|
307 | } |
---|
308 | |
---|
309 | /** |
---|
310 | * Read an int from the socket. |
---|
311 | * |
---|
312 | * @return the int |
---|
313 | * |
---|
314 | * @throws CqiClientException Signals that the data read on the socket is |
---|
315 | * unexpected |
---|
316 | * @throws IOException Signals that an I/O exception has occurred. |
---|
317 | */ |
---|
318 | private synchronized int readInt() throws CqiClientException, IOException { |
---|
319 | if (readHeaderFromServer() != CQI_DATA_INT) { |
---|
320 | throw new CqiClientException(UNEXPECTED_ANSWER); |
---|
321 | } |
---|
322 | int res = this.streamFromServer.readInt(); |
---|
323 | return res; |
---|
324 | } |
---|
325 | |
---|
326 | /** |
---|
327 | * Read a string array from the socket. |
---|
328 | * |
---|
329 | * @return the string array |
---|
330 | * |
---|
331 | * @throws CqiClientException |
---|
332 | */ |
---|
333 | private synchronized String[] readStringArray(Charset charset) |
---|
334 | throws CqiClientException { |
---|
335 | try { |
---|
336 | byte[] header = readHeaderFromServer(); |
---|
337 | if (header != CQI_DATA_STRING_LIST) { |
---|
338 | throw new CqiClientException(UNEXPECTED_ANSWER); |
---|
339 | } |
---|
340 | int arrayLength = this.streamFromServer.readInt(); |
---|
341 | String[] strings = new String[arrayLength]; |
---|
342 | for (int i = 0; i < arrayLength; i++) { |
---|
343 | short stringLength = this.streamFromServer.readShort(); |
---|
344 | byte[] bytes = new byte[stringLength]; |
---|
345 | this.streamFromServer.readFully(bytes); |
---|
346 | strings[i] = new String(bytes, charset); |
---|
347 | } |
---|
348 | return strings; |
---|
349 | } catch (IOException e) { |
---|
350 | throw new CqiClientException("Error reading a string array", e); |
---|
351 | } |
---|
352 | } |
---|
353 | |
---|
354 | /** |
---|
355 | * Read an int array from the socket. |
---|
356 | * |
---|
357 | * @return the int array |
---|
358 | * |
---|
359 | * @throws CqiClientException |
---|
360 | * @throws IOException |
---|
361 | */ |
---|
362 | private synchronized void readIntList(int[] output) throws CqiClientException, |
---|
363 | IOException { |
---|
364 | if ((readHeaderFromServer()) != CQI_DATA_INT_LIST) { |
---|
365 | throw new CqiClientException(UNEXPECTED_ANSWER); |
---|
366 | } |
---|
367 | int arrayLength = this.streamFromServer.readInt(); |
---|
368 | if (output.length < arrayLength) { |
---|
369 | throw new CqiClientException(INSUFFICIENT_BUFFER_SIZE); |
---|
370 | } |
---|
371 | int bsize = arrayLength * 4; |
---|
372 | if (buffer.length < bsize) { |
---|
373 | throw new CqiClientException(INSUFFICIENT_BUFFER_SIZE); |
---|
374 | } |
---|
375 | streamFromServer.readFully(buffer, 0, bsize); |
---|
376 | for (int i = 0; i + 3 < bsize; i += 4) { |
---|
377 | output[i >> 2] = bytesToInt(buffer[i], buffer[i + 1], buffer[i + 2], buffer[i + 3]); |
---|
378 | } |
---|
379 | } |
---|
380 | |
---|
381 | /** |
---|
382 | * Bytes to int. |
---|
383 | * |
---|
384 | * @param a the a |
---|
385 | * @param b the b |
---|
386 | * @param c the c |
---|
387 | * @param d the d |
---|
388 | * @return the int |
---|
389 | */ |
---|
390 | private synchronized static int bytesToInt(byte a, byte b, byte c, byte d) { |
---|
391 | return (((a & 0xff) << 24) | ((b & 0xff) << 16) | ((c & 0xff) << 8) | (d & 0xff)); |
---|
392 | } |
---|
393 | |
---|
394 | /** |
---|
395 | * Read the header of the data send by the server. |
---|
396 | * |
---|
397 | * @return the header |
---|
398 | * |
---|
399 | * @throws CqiClientException\ |
---|
400 | * @throws IOException |
---|
401 | */ |
---|
402 | private synchronized byte[] readHeaderFromServer() |
---|
403 | throws CqiClientException, IOException { |
---|
404 | byte b = this.streamFromServer.readByte(); |
---|
405 | switch (b) { |
---|
406 | case 0x00:// cf cqi.h:29 |
---|
407 | return CQI_PADDING; |
---|
408 | case 0x01:// cf cqi.h:37 |
---|
409 | b = this.streamFromServer.readByte(); |
---|
410 | switch (b) { |
---|
411 | case 0x01:// cf cqi.h:39 |
---|
412 | return CQI_STATUS_OK; |
---|
413 | case 0x02:// cf cqi.h:40 |
---|
414 | return CQI_STATUS_CONNECT_OK; |
---|
415 | case 0x03:// cf cqi.h:41 |
---|
416 | return CQI_STATUS_BYE_OK; |
---|
417 | case 0x04:// cf cqi.h:42 |
---|
418 | return CQI_STATUS_PING_OK; |
---|
419 | } |
---|
420 | break; |
---|
421 | case 0x02:// cf cqi.h:45 |
---|
422 | b = this.streamFromServer.readByte(); |
---|
423 | switch (b) { |
---|
424 | case 0x01:// cf cqi.h:39 |
---|
425 | throw new CqiClientException(GENERAL_ERROR); |
---|
426 | case 0x02:// cf cqi.h:40 |
---|
427 | throw new CqiClientException(CONNECTION_REFUSED_ERROR); |
---|
428 | case 0x03:// cf cqi.h:41 |
---|
429 | throw new CqiClientException(USER_ABORT_ERROR); |
---|
430 | case 0x04:// cf cqi.h:42 |
---|
431 | throw new CqiClientException(SYNTAX_ERROR); |
---|
432 | default: |
---|
433 | throw new CqiClientException(INTERNAL_CQI_ERROR); |
---|
434 | } |
---|
435 | case 0x03:// cf cqi.h:53 |
---|
436 | b = this.streamFromServer.readByte(); |
---|
437 | |
---|
438 | switch (b) { |
---|
439 | case 0x01:// cf cqi.h:39 |
---|
440 | return CQI_DATA_BYTE; |
---|
441 | case 0x02:// cf cqi.h:40 |
---|
442 | return CQI_DATA_BOOL; |
---|
443 | case 0x03:// cf cqi.h:41 |
---|
444 | return CQI_DATA_INT; |
---|
445 | case 0x04:// cf cqi.h:42 |
---|
446 | return CQI_DATA_STRING; |
---|
447 | case 0x05:// cf cqi.h:42 |
---|
448 | return CQI_DATA_BYTE_LIST; |
---|
449 | case 0x06:// cf cqi.h:42 |
---|
450 | return CQI_DATA_BOOL_LIST; |
---|
451 | case 0x07:// cf cqi.h:42 |
---|
452 | return CQI_DATA_INT_LIST; |
---|
453 | case 0x08:// cf cqi.h:42 |
---|
454 | return CQI_DATA_STRING_LIST; |
---|
455 | case 0x09:// cf cqi.h:42 |
---|
456 | return CQI_DATA_INT_INT; |
---|
457 | case 0x0A:// cf cqi.h:42 |
---|
458 | return CQI_DATA_INT_INT_INT_INT; |
---|
459 | case 0x0B:// cf cqi.h:42 |
---|
460 | return CQI_DATA_INT_TABLE; |
---|
461 | } |
---|
462 | break; |
---|
463 | case 0x04:// cf cqi.h:67 |
---|
464 | |
---|
465 | b = this.streamFromServer.readByte(); |
---|
466 | switch (b) { |
---|
467 | case 0x01:// cf cqi.h:39 |
---|
468 | throw new CqiClientException(NO_SUCH_ATTRIBUTE_ERROR); |
---|
469 | case 0x02:// cf cqi.h:40 |
---|
470 | throw new CqiClientException(WRONG_ATTRIBUTE_TYPE_ERROR); |
---|
471 | case 0x03:// cf cqi.h:41 |
---|
472 | throw new CqiClientException(OUT_OF_RANGE_ERROR); |
---|
473 | case 0x04:// cf cqi.h:42 |
---|
474 | throw new CqiClientException(REGEX_ERROR + ": " + getLastCqiError()); |
---|
475 | case 0x05:// cf cqi.h:42 |
---|
476 | throw new CqiClientException(CORPUS_ACCESS_ERROR); |
---|
477 | case 0x06:// cf cqi.h:42 |
---|
478 | throw new CqiClientException(OUT_OF_MEMORY_ERROR); |
---|
479 | case 0x07:// cf cqi.h:42 |
---|
480 | throw new CqiClientException(INTERNAL_ERROR); |
---|
481 | default: |
---|
482 | throw new CqiClientException(INTERNAL_CL_ERROR); |
---|
483 | } |
---|
484 | case 0x05:// cf cqi.h:94 |
---|
485 | |
---|
486 | b = this.streamFromServer.readByte(); |
---|
487 | switch (b) { |
---|
488 | case 0x01:// cf cqi.h:39 |
---|
489 | throw new CqiClientException(GENERAL_SQP_ERROR); |
---|
490 | case 0x02:// cf cqi.h:40 |
---|
491 | throw new CqiClientException(NO_SUCH_CORPUS_CQP_ERROR); |
---|
492 | case 0x03:// cf cqi.h:41 |
---|
493 | throw new CqiClientException(INVALID_FIELD_CQP_ERROR); |
---|
494 | case 0x04:// cf cqi.h:42 |
---|
495 | throw new CqiClientException(OUT_OF_RANGE_CQP_ERROR); |
---|
496 | case 0x05:// cf cqi.h:44 |
---|
497 | throw new CqiClientException(SYNTAX_CQP_ERROR + ": " + getLastCQPError()); |
---|
498 | default: |
---|
499 | throw new CqiClientException(INTERNAL_CQP_ERROR); |
---|
500 | } |
---|
501 | } |
---|
502 | return null; |
---|
503 | } |
---|
504 | |
---|
505 | /** |
---|
506 | * Ask the server to execute a function with a String->String signature. |
---|
507 | * |
---|
508 | * @param string the argument |
---|
509 | * @param function the function to be executed |
---|
510 | * @return the result |
---|
511 | * @throws CqiClientException Signals that the data read on the socket is |
---|
512 | * unexpected |
---|
513 | * @throws IOException Signals that an I/O exception has occurred. |
---|
514 | */ |
---|
515 | private synchronized String genericStringToString(String string, |
---|
516 | byte[] function) throws CqiClientException, IOException { |
---|
517 | this.streamToServer.write(function); |
---|
518 | this.writeString(string, DEFAULT_CHARSET); |
---|
519 | return readString(DEFAULT_CHARSET); |
---|
520 | } |
---|
521 | |
---|
522 | /** |
---|
523 | * Ask the server to execute a function with a String->StringArray |
---|
524 | * signature. |
---|
525 | * |
---|
526 | * @param string the argument |
---|
527 | * @param function the function to be executed |
---|
528 | * @return the result |
---|
529 | * @throws CqiClientException |
---|
530 | */ |
---|
531 | private synchronized String[] genericStringToStringArray(String string, |
---|
532 | byte[] function) throws CqiClientException { |
---|
533 | try { |
---|
534 | this.streamToServer.write(function); |
---|
535 | this.writeString(string, DEFAULT_CHARSET); |
---|
536 | } catch (IOException e) { |
---|
537 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
538 | } |
---|
539 | return readStringArray(DEFAULT_CHARSET); |
---|
540 | } |
---|
541 | |
---|
542 | /** |
---|
543 | * Ask the server to execute a function with a String x int[]->String[] |
---|
544 | * signature. |
---|
545 | * |
---|
546 | * @param string the string argument |
---|
547 | * @param ints the int[] argument |
---|
548 | * @param function the function to be executed |
---|
549 | * @return the result |
---|
550 | * @throws CqiClientException |
---|
551 | */ |
---|
552 | private synchronized String[] genericStringXIntArraytoStringArray( |
---|
553 | String string, int[] ints, byte[] function, Charset charset) throws |
---|
554 | CqiClientException { |
---|
555 | try { |
---|
556 | this.streamToServer.write(function); |
---|
557 | this.writeString(string, charset); |
---|
558 | this.writeIntArray(ints); |
---|
559 | String[] res = readStringArray(charset); |
---|
560 | return res; |
---|
561 | } catch (IOException e) { |
---|
562 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
563 | } |
---|
564 | |
---|
565 | } |
---|
566 | |
---|
567 | /** |
---|
568 | * Ask the server to execute a function with a String x int[]->int[] |
---|
569 | * signature. |
---|
570 | * |
---|
571 | * @param string the string argument |
---|
572 | * @param ints the int[] argument |
---|
573 | * @param function the function to be executed |
---|
574 | * @return the result |
---|
575 | * @throws CqiClientException |
---|
576 | */ |
---|
577 | private synchronized void genericStringXIntArraytoIntArray(String string, |
---|
578 | int[] ints, byte[] function, int[] output, int size) throws CqiClientException { |
---|
579 | try { |
---|
580 | this.streamToServer.write(function); |
---|
581 | this.writeString(string); |
---|
582 | this.writeIntArray(ints, size); |
---|
583 | readIntList(output); |
---|
584 | } catch (IOException e) { |
---|
585 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
586 | } |
---|
587 | } |
---|
588 | |
---|
589 | /** |
---|
590 | * return the last CQP error. |
---|
591 | * |
---|
592 | * @return the last error |
---|
593 | * @throws CqiClientException Signals that the data read on the socket is |
---|
594 | * unexpected |
---|
595 | * @throws IOException Signals that an I/O exception has occurred. |
---|
596 | * @throws CqiServerError Signals that the cqi server raised an error |
---|
597 | */ |
---|
598 | private synchronized String getLastCqiError() throws CqiClientException, IOException { |
---|
599 | this.streamToServer.write(CQI_CTRL_LAST_GENERAL_ERROR); |
---|
600 | |
---|
601 | try { |
---|
602 | String ret = readString(); |
---|
603 | return ret; |
---|
604 | } catch (CqiClientException e) { |
---|
605 | return "getLastCQiError: " + e; |
---|
606 | } |
---|
607 | } |
---|
608 | |
---|
609 | /** |
---|
610 | * return the last CQP error. |
---|
611 | * |
---|
612 | * @return the last error |
---|
613 | * @throws CqiClientException Signals that the data read on the socket is |
---|
614 | * unexpected |
---|
615 | * @throws IOException Signals that an I/O exception has occurred. |
---|
616 | * @throws CqiServerError Signals that the cqi server raised an error |
---|
617 | */ |
---|
618 | public synchronized String getLastCQPError() throws CqiClientException, IOException { |
---|
619 | |
---|
620 | this.streamToServer.write(CQI_CTRL_LAST_CQP_ERROR); |
---|
621 | |
---|
622 | try { |
---|
623 | String ret = readString(); |
---|
624 | return ret; |
---|
625 | } catch (CqiClientException e) { |
---|
626 | return "getLastCQPError: " + e; |
---|
627 | } |
---|
628 | } |
---|
629 | |
---|
630 | /** |
---|
631 | * Gives the corpus charset. |
---|
632 | * |
---|
633 | * @param corpus the corpus |
---|
634 | * @return the name of the charset |
---|
635 | * @throws CqiClientException Signals that the data read on the socket is |
---|
636 | * unexpected |
---|
637 | * @throws IOException Signals that an I/O exception has occurred. |
---|
638 | * @throws CqiServerError Signals that the cqi server raised an error |
---|
639 | */ |
---|
640 | public synchronized String corpusCharset(String corpus) |
---|
641 | throws CqiClientException, IOException { |
---|
642 | return genericStringToString(corpus, CQI_CORPUS_CHARSET); |
---|
643 | } |
---|
644 | |
---|
645 | /** |
---|
646 | * Gives the corpus full name. |
---|
647 | * |
---|
648 | * @param corpus the corpus |
---|
649 | * @return the full name |
---|
650 | * @throws CqiClientException Signals that the data read on the socket is |
---|
651 | * unexpected |
---|
652 | * @throws IOException Signals that an I/O exception has occurred. |
---|
653 | * @throws CqiServerError Signals that the cqi server raised an error |
---|
654 | */ |
---|
655 | public synchronized String corpusFullName(String corpus) |
---|
656 | throws CqiClientException, IOException { |
---|
657 | return genericStringToString(corpus, CQI_CORPUS_FULL_NAME); |
---|
658 | } |
---|
659 | |
---|
660 | /** |
---|
661 | * Drop a corpus. |
---|
662 | * |
---|
663 | * @param corpus the corpus |
---|
664 | */ |
---|
665 | public synchronized void dropCorpus(String corpus) { |
---|
666 | throw new UnsupportedOperationException(); |
---|
667 | } |
---|
668 | |
---|
669 | /** |
---|
670 | * Gives an attribute size (the number of token). |
---|
671 | * |
---|
672 | * @param attribute the attribute |
---|
673 | * @return the size |
---|
674 | * @throws CqiClientException |
---|
675 | */ |
---|
676 | public synchronized int attributeSize(String attribute) throws |
---|
677 | CqiClientException { |
---|
678 | try { |
---|
679 | this.streamToServer.write(CQI_CL_ATTRIBUTE_SIZE); |
---|
680 | this.writeString(attribute); |
---|
681 | return readInt(); |
---|
682 | } catch (IOException e) { |
---|
683 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
684 | } |
---|
685 | } |
---|
686 | |
---|
687 | /** |
---|
688 | * Gives the lexicon size of an attribute. |
---|
689 | * |
---|
690 | * @param attribute the attribute |
---|
691 | * @return the int |
---|
692 | * @throws CqiClientException @returns the number of entries in the lexicon |
---|
693 | * of a positional attribute |
---|
694 | */ |
---|
695 | public synchronized int lexiconSize(String attribute) throws CqiClientException { |
---|
696 | try { |
---|
697 | this.streamToServer.write(CQI_CL_LEXICON_SIZE); |
---|
698 | this.writeString(attribute); |
---|
699 | return readInt(); |
---|
700 | } catch (IOException e) { |
---|
701 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
702 | } |
---|
703 | } |
---|
704 | |
---|
705 | /** |
---|
706 | * Converts an array of position to their value given an attribute. |
---|
707 | * |
---|
708 | * @param attribute the attribute |
---|
709 | * @param cpos the cpos |
---|
710 | * @return the values |
---|
711 | * @throws CqiClientException |
---|
712 | */ |
---|
713 | public synchronized String[] cpos2Str(String attribute, int[] cpos, Charset charset) |
---|
714 | throws CqiClientException { |
---|
715 | return genericStringXIntArraytoStringArray(attribute, cpos, |
---|
716 | CQI_CL_CPOS2STR, charset); |
---|
717 | } |
---|
718 | |
---|
719 | /** |
---|
720 | * Computes for each position of an array the position of the left boundary |
---|
721 | * of the enclosing structural attribute. |
---|
722 | * |
---|
723 | * @param attribute the attribute |
---|
724 | * @param cpos the cpos |
---|
725 | * @return the positions of the left boundaries |
---|
726 | * @throws CqiClientException |
---|
727 | */ |
---|
728 | public synchronized void cpos2LBound(String attribute, int[] cpos, int[] output, int size) |
---|
729 | throws CqiClientException { |
---|
730 | genericStringXIntArraytoIntArray(attribute, cpos, CQI_CL_CPOS2LBOUND, output, size); |
---|
731 | } |
---|
732 | |
---|
733 | /** |
---|
734 | * Computes for each position of an array the position of the right boundary |
---|
735 | * of the enclosing structural attribute. |
---|
736 | * |
---|
737 | * @param attribute the attribute |
---|
738 | * @param cpos the cpos |
---|
739 | * @return the positions of the right boundaries |
---|
740 | * @throws CqiClientException |
---|
741 | */ |
---|
742 | public synchronized void cpos2RBound(String attribute, int[] cpos, int[] output, int size) |
---|
743 | throws CqiClientException { |
---|
744 | genericStringXIntArraytoIntArray(attribute, cpos, CQI_CL_CPOS2RBOUND, output, size); |
---|
745 | } |
---|
746 | |
---|
747 | /** |
---|
748 | * Runs a CQP query. |
---|
749 | * |
---|
750 | * @param corpus the corpus |
---|
751 | * @param subcorpus the subcorpus |
---|
752 | * @param query the query |
---|
753 | * @param charset the charset |
---|
754 | * @throws CqiClientException |
---|
755 | */ |
---|
756 | private synchronized void cqpQuery(String corpus, String subcorpus, |
---|
757 | String query, Charset charset) throws CqiClientException { |
---|
758 | try { |
---|
759 | this.streamToServer.write(CQI_CQP_QUERY); |
---|
760 | this.writeString(corpus); |
---|
761 | this.writeString(subcorpus); |
---|
762 | this.writeString(query, charset); |
---|
763 | this.readHeaderFromServer(); |
---|
764 | } catch (IOException e) { |
---|
765 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
766 | } |
---|
767 | |
---|
768 | } |
---|
769 | |
---|
770 | /** |
---|
771 | * Runs a CQP query. |
---|
772 | * |
---|
773 | * @param corpus the corpus |
---|
774 | * @param subcorpus the subcorpus |
---|
775 | * @param query the query |
---|
776 | * @param charset the charset |
---|
777 | * @throws CqiClientException |
---|
778 | */ |
---|
779 | public synchronized CqiResult cqpQuery(String corpus, String query) throws CqiClientException { |
---|
780 | String queryName = String.format("Q%d", System.currentTimeMillis()); |
---|
781 | String subcorpus = String.format("%s:%s", corpus, queryName); |
---|
782 | Charset charset; |
---|
783 | try { |
---|
784 | charset = Charset.forName(corpusCharset(corpus)); |
---|
785 | } catch (IOException e) { |
---|
786 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
787 | } |
---|
788 | cqpQuery(corpus, queryName, query, charset); |
---|
789 | return new CqiResult(this, corpus, subcorpus, charset, subCorpusSize(subcorpus)); |
---|
790 | } |
---|
791 | |
---|
792 | /** |
---|
793 | * Lists all the subcorpora of a corpus. |
---|
794 | * |
---|
795 | * @param corpus the corpus |
---|
796 | * @return the name of the subcorpora |
---|
797 | * @throws CqiClientException |
---|
798 | */ |
---|
799 | public synchronized String[] listSubcorpora(String corpus) |
---|
800 | throws CqiClientException { |
---|
801 | return genericStringToStringArray(corpus, CQI_CQP_LIST_SUBCORPORA); |
---|
802 | } |
---|
803 | |
---|
804 | /** |
---|
805 | * Gives the size of a subcorpus . |
---|
806 | * |
---|
807 | * @param subcorpus the subcorpus |
---|
808 | * |
---|
809 | * @return the size |
---|
810 | * |
---|
811 | * @throws CqiClientException |
---|
812 | */ |
---|
813 | public synchronized int subCorpusSize(String subcorpus) throws |
---|
814 | CqiClientException { |
---|
815 | try { |
---|
816 | this.streamToServer.write(CQI_CQP_SUBCORPUS_SIZE); |
---|
817 | this.writeString(subcorpus); |
---|
818 | return this.readInt(); |
---|
819 | } catch (IOException e) { |
---|
820 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
821 | } |
---|
822 | } |
---|
823 | |
---|
824 | /** |
---|
825 | * Checks wether a subcorpus has a field. |
---|
826 | * |
---|
827 | * @param subcorpus the subcorpus |
---|
828 | * @param field the field |
---|
829 | * |
---|
830 | * @return true, if the subcorpus has the field |
---|
831 | * |
---|
832 | * @throws IOException Signals that an I/O exception has occurred. |
---|
833 | * @throws CqiClientException Signals that the data read on the socket is |
---|
834 | * unexpected |
---|
835 | */ |
---|
836 | public synchronized boolean subCorpusHasField(String subcorpus, byte field) |
---|
837 | throws IOException, CqiClientException { |
---|
838 | this.streamToServer.write(CQI_CQP_SUBCORPUS_HAS_FIELD); |
---|
839 | this.writeString(subcorpus); |
---|
840 | this.streamToServer.writeByte(field); |
---|
841 | return this.readBoolean(); |
---|
842 | } |
---|
843 | |
---|
844 | /** |
---|
845 | * Dumps the values of <field> for match ranges <first> .. <last> in |
---|
846 | * <subcorpus>. <field> is one of the CQI_CONST_FIELD_* constants. |
---|
847 | * |
---|
848 | * @param subcorpus the subcorpus |
---|
849 | * @param field the field |
---|
850 | * @param first the first |
---|
851 | * @param last the last |
---|
852 | * |
---|
853 | * @return the values |
---|
854 | * |
---|
855 | * @throws CqiClientException |
---|
856 | */ |
---|
857 | public synchronized void dumpSubCorpus(String subcorpus, byte field, |
---|
858 | int first, int last, int[] output) throws CqiClientException { |
---|
859 | try { |
---|
860 | this.streamToServer.write(CQI_CQP_DUMP_SUBCORPUS); |
---|
861 | this.writeString(subcorpus); |
---|
862 | this.streamToServer.writeByte(field); |
---|
863 | this.streamToServer.writeInt(first); |
---|
864 | this.streamToServer.writeInt(last); |
---|
865 | this.readIntList(output); |
---|
866 | } catch (IOException e) { |
---|
867 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
868 | } |
---|
869 | } |
---|
870 | |
---|
871 | /** |
---|
872 | * Drops a subcorpus. |
---|
873 | * |
---|
874 | * @param subcorpus the subcorpus |
---|
875 | * |
---|
876 | * @throws CqiClientException |
---|
877 | */ |
---|
878 | public synchronized void dropSubCorpus(String subcorpus) throws |
---|
879 | CqiClientException { |
---|
880 | try { |
---|
881 | this.streamToServer.write(CQI_CQP_DROP_SUBCORPUS); |
---|
882 | this.writeString(subcorpus); |
---|
883 | this.readHeaderFromServer(); |
---|
884 | } catch (IOException e) { |
---|
885 | throw new CqiClientException(SERVER_IO_ERROR, e); |
---|
886 | } |
---|
887 | } |
---|
888 | } |
---|