| 1 | /* |
| 2 | * Copyright 2006-2007 the original author or authors. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.springframework.batch.item.file.transform; |
| 18 | |
| 19 | import java.math.BigDecimal; |
| 20 | import java.text.DateFormat; |
| 21 | import java.text.DecimalFormat; |
| 22 | import java.text.NumberFormat; |
| 23 | import java.text.ParseException; |
| 24 | import java.text.SimpleDateFormat; |
| 25 | import java.util.Arrays; |
| 26 | import java.util.Date; |
| 27 | import java.util.List; |
| 28 | import java.util.Locale; |
| 29 | import java.util.Properties; |
| 30 | |
| 31 | import org.springframework.util.Assert; |
| 32 | import org.springframework.util.StringUtils; |
| 33 | |
| 34 | /** |
| 35 | * Default implementation of {@link FieldSet} using Java using Java primitive |
| 36 | * and standard types and utilities. Strings are trimmed before parsing by |
| 37 | * default, and so are plain String values. |
| 38 | * |
| 39 | * @author Rob Harrop |
| 40 | * @author Dave Syer |
| 41 | */ |
| 42 | public class DefaultFieldSet implements FieldSet { |
| 43 | |
| 44 | private final static String DEFAULT_DATE_PATTERN = "yyyy-MM-dd"; |
| 45 | |
| 46 | private DateFormat dateFormat = new SimpleDateFormat(DEFAULT_DATE_PATTERN); |
| 47 | { |
| 48 | dateFormat.setLenient(false); |
| 49 | } |
| 50 | |
| 51 | private NumberFormat numberFormat = NumberFormat.getInstance(Locale.US); |
| 52 | |
| 53 | private String grouping = ","; |
| 54 | |
| 55 | private String decimal = "."; |
| 56 | |
| 57 | /** |
| 58 | * The fields wrapped by this '<code>FieldSet</code>' instance. |
| 59 | */ |
| 60 | private String[] tokens; |
| 61 | |
| 62 | private List<String> names; |
| 63 | |
| 64 | /** |
| 65 | * The {@link NumberFormat} to use for parsing numbers. If unset the US |
| 66 | * locale will be used ('.' as decimal place). |
| 67 | * @param numberFormat the {@link NumberFormat} to use for number parsing |
| 68 | */ |
| 69 | public final void setNumberFormat(NumberFormat numberFormat) { |
| 70 | this.numberFormat = numberFormat; |
| 71 | if (numberFormat instanceof DecimalFormat) { |
| 72 | grouping = "" + ((DecimalFormat) numberFormat).getDecimalFormatSymbols().getGroupingSeparator(); |
| 73 | decimal = "" + ((DecimalFormat) numberFormat).getDecimalFormatSymbols().getDecimalSeparator(); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * The {@link DateFormat} to use for parsing numbers. If unset the default |
| 79 | * pattern is ISO standard <code>yyyy/MM/dd</code>. |
| 80 | * @param dateFormat the {@link DateFormat} to use for date parsing |
| 81 | */ |
| 82 | public void setDateFormat(DateFormat dateFormat) { |
| 83 | this.dateFormat = dateFormat; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * Create a FieldSet with anonymous tokens. They can only be retrieved by |
| 88 | * column number. |
| 89 | * @param tokens the token values |
| 90 | * @see FieldSet#readString(int) |
| 91 | */ |
| 92 | public DefaultFieldSet(String[] tokens) { |
| 93 | this.tokens = tokens == null ? null : (String[]) tokens.clone(); |
| 94 | setNumberFormat(NumberFormat.getInstance(Locale.US)); |
| 95 | } |
| 96 | |
| 97 | /** |
| 98 | * Create a FieldSet with named tokens. The token values can then be |
| 99 | * retrieved either by name or by column number. |
| 100 | * @param tokens the token values |
| 101 | * @param names the names of the tokens |
| 102 | * @see FieldSet#readString(String) |
| 103 | */ |
| 104 | public DefaultFieldSet(String[] tokens, String[] names) { |
| 105 | Assert.notNull(tokens); |
| 106 | Assert.notNull(names); |
| 107 | if (tokens.length != names.length) { |
| 108 | throw new IllegalArgumentException("Field names must be same length as values: names=" |
| 109 | + Arrays.asList(names) + ", values=" + Arrays.asList(tokens)); |
| 110 | } |
| 111 | this.tokens = (String[]) tokens.clone(); |
| 112 | this.names = Arrays.asList(names); |
| 113 | setNumberFormat(NumberFormat.getInstance(Locale.US)); |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * (non-Javadoc) |
| 118 | * |
| 119 | * @see org.springframework.batch.item.file.mapping.IFieldSet#getNames() |
| 120 | */ |
| 121 | public String[] getNames() { |
| 122 | if (names == null) { |
| 123 | throw new IllegalStateException("Field names are not known"); |
| 124 | } |
| 125 | return names.toArray(new String[names.size()]); |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * (non-Javadoc) |
| 130 | * |
| 131 | * @see org.springframework.batch.item.file.mapping.FieldSet#hasNames() |
| 132 | */ |
| 133 | public boolean hasNames() { |
| 134 | return names != null; |
| 135 | } |
| 136 | |
| 137 | /* |
| 138 | * (non-Javadoc) |
| 139 | * |
| 140 | * @see org.springframework.batch.item.file.mapping.IFieldSet#getValues() |
| 141 | */ |
| 142 | public String[] getValues() { |
| 143 | return tokens.clone(); |
| 144 | } |
| 145 | |
| 146 | /* |
| 147 | * (non-Javadoc) |
| 148 | * |
| 149 | * @see |
| 150 | * org.springframework.batch.item.file.mapping.IFieldSet#readString(int) |
| 151 | */ |
| 152 | public String readString(int index) { |
| 153 | return readAndTrim(index); |
| 154 | } |
| 155 | |
| 156 | /* |
| 157 | * (non-Javadoc) |
| 158 | * |
| 159 | * @see |
| 160 | * org.springframework.batch.item.file.mapping.IFieldSet#readString(java |
| 161 | * .lang.String) |
| 162 | */ |
| 163 | public String readString(String name) { |
| 164 | return readString(indexOf(name)); |
| 165 | } |
| 166 | |
| 167 | /* |
| 168 | * (non-Javadoc) |
| 169 | * |
| 170 | * @see |
| 171 | * org.springframework.batch.item.file.mapping.IFieldSet#readRawString(int) |
| 172 | */ |
| 173 | public String readRawString(int index) { |
| 174 | return tokens[index]; |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * (non-Javadoc) |
| 179 | * |
| 180 | * @see |
| 181 | * org.springframework.batch.item.file.mapping.IFieldSet#readRawString(java |
| 182 | * .lang.String) |
| 183 | */ |
| 184 | public String readRawString(String name) { |
| 185 | return readRawString(indexOf(name)); |
| 186 | } |
| 187 | |
| 188 | /* |
| 189 | * (non-Javadoc) |
| 190 | * |
| 191 | * @see |
| 192 | * org.springframework.batch.item.file.mapping.IFieldSet#readBoolean(int) |
| 193 | */ |
| 194 | public boolean readBoolean(int index) { |
| 195 | return readBoolean(index, "true"); |
| 196 | } |
| 197 | |
| 198 | /* |
| 199 | * (non-Javadoc) |
| 200 | * |
| 201 | * @see |
| 202 | * org.springframework.batch.item.file.mapping.IFieldSet#readBoolean(java |
| 203 | * .lang.String) |
| 204 | */ |
| 205 | public boolean readBoolean(String name) { |
| 206 | return readBoolean(indexOf(name)); |
| 207 | } |
| 208 | |
| 209 | /* |
| 210 | * (non-Javadoc) |
| 211 | * |
| 212 | * @see |
| 213 | * org.springframework.batch.item.file.mapping.IFieldSet#readBoolean(int, |
| 214 | * java.lang.String) |
| 215 | */ |
| 216 | public boolean readBoolean(int index, String trueValue) { |
| 217 | Assert.notNull(trueValue, "'trueValue' cannot be null."); |
| 218 | |
| 219 | String value = readAndTrim(index); |
| 220 | |
| 221 | return trueValue.equals(value) ? true : false; |
| 222 | } |
| 223 | |
| 224 | /* |
| 225 | * (non-Javadoc) |
| 226 | * |
| 227 | * @see |
| 228 | * org.springframework.batch.item.file.mapping.IFieldSet#readBoolean(java |
| 229 | * .lang.String, java.lang.String) |
| 230 | */ |
| 231 | public boolean readBoolean(String name, String trueValue) { |
| 232 | return readBoolean(indexOf(name), trueValue); |
| 233 | } |
| 234 | |
| 235 | /* |
| 236 | * (non-Javadoc) |
| 237 | * |
| 238 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readChar(int) |
| 239 | */ |
| 240 | public char readChar(int index) { |
| 241 | String value = readAndTrim(index); |
| 242 | |
| 243 | Assert.isTrue(value.length() == 1, "Cannot convert field value '" + value + "' to char."); |
| 244 | |
| 245 | return value.charAt(0); |
| 246 | } |
| 247 | |
| 248 | /* |
| 249 | * (non-Javadoc) |
| 250 | * |
| 251 | * @see |
| 252 | * org.springframework.batch.item.file.mapping.IFieldSet#readChar(java.lang |
| 253 | * .String) |
| 254 | */ |
| 255 | public char readChar(String name) { |
| 256 | return readChar(indexOf(name)); |
| 257 | } |
| 258 | |
| 259 | /* |
| 260 | * (non-Javadoc) |
| 261 | * |
| 262 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readByte(int) |
| 263 | */ |
| 264 | public byte readByte(int index) { |
| 265 | return Byte.parseByte(readAndTrim(index)); |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | * (non-Javadoc) |
| 270 | * |
| 271 | * @see |
| 272 | * org.springframework.batch.item.file.mapping.IFieldSet#readByte(java.lang |
| 273 | * .String) |
| 274 | */ |
| 275 | public byte readByte(String name) { |
| 276 | return readByte(indexOf(name)); |
| 277 | } |
| 278 | |
| 279 | /* |
| 280 | * (non-Javadoc) |
| 281 | * |
| 282 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readShort(int) |
| 283 | */ |
| 284 | public short readShort(int index) { |
| 285 | return Short.parseShort(readAndTrim(index)); |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * (non-Javadoc) |
| 290 | * |
| 291 | * @see |
| 292 | * org.springframework.batch.item.file.mapping.IFieldSet#readShort(java. |
| 293 | * lang.String) |
| 294 | */ |
| 295 | public short readShort(String name) { |
| 296 | return readShort(indexOf(name)); |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * (non-Javadoc) |
| 301 | * |
| 302 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readInt(int) |
| 303 | */ |
| 304 | public int readInt(int index) { |
| 305 | return parseNumber(readAndTrim(index)).intValue(); |
| 306 | } |
| 307 | |
| 308 | /* |
| 309 | * (non-Javadoc) |
| 310 | * |
| 311 | * @see |
| 312 | * org.springframework.batch.item.file.mapping.IFieldSet#readInt(java.lang |
| 313 | * .String) |
| 314 | */ |
| 315 | public int readInt(String name) { |
| 316 | return readInt(indexOf(name)); |
| 317 | } |
| 318 | |
| 319 | /* |
| 320 | * (non-Javadoc) |
| 321 | * |
| 322 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readInt(int, |
| 323 | * int) |
| 324 | */ |
| 325 | public int readInt(int index, int defaultValue) { |
| 326 | String value = readAndTrim(index); |
| 327 | |
| 328 | return StringUtils.hasLength(value) ? Integer.parseInt(value) : defaultValue; |
| 329 | } |
| 330 | |
| 331 | /* |
| 332 | * (non-Javadoc) |
| 333 | * |
| 334 | * @see |
| 335 | * org.springframework.batch.item.file.mapping.IFieldSet#readInt(java.lang |
| 336 | * .String, int) |
| 337 | */ |
| 338 | public int readInt(String name, int defaultValue) { |
| 339 | return readInt(indexOf(name), defaultValue); |
| 340 | } |
| 341 | |
| 342 | /* |
| 343 | * (non-Javadoc) |
| 344 | * |
| 345 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readLong(int) |
| 346 | */ |
| 347 | public long readLong(int index) { |
| 348 | return parseNumber(readAndTrim(index)).longValue(); |
| 349 | } |
| 350 | |
| 351 | /* |
| 352 | * (non-Javadoc) |
| 353 | * |
| 354 | * @see |
| 355 | * org.springframework.batch.item.file.mapping.IFieldSet#readLong(java.lang |
| 356 | * .String) |
| 357 | */ |
| 358 | public long readLong(String name) { |
| 359 | return readLong(indexOf(name)); |
| 360 | } |
| 361 | |
| 362 | /* |
| 363 | * (non-Javadoc) |
| 364 | * |
| 365 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readLong(int, |
| 366 | * long) |
| 367 | */ |
| 368 | public long readLong(int index, long defaultValue) { |
| 369 | String value = readAndTrim(index); |
| 370 | |
| 371 | return StringUtils.hasLength(value) ? Long.parseLong(value) : defaultValue; |
| 372 | } |
| 373 | |
| 374 | /* |
| 375 | * (non-Javadoc) |
| 376 | * |
| 377 | * @see |
| 378 | * org.springframework.batch.item.file.mapping.IFieldSet#readLong(java.lang |
| 379 | * .String, long) |
| 380 | */ |
| 381 | public long readLong(String name, long defaultValue) { |
| 382 | return readLong(indexOf(name), defaultValue); |
| 383 | } |
| 384 | |
| 385 | /* |
| 386 | * (non-Javadoc) |
| 387 | * |
| 388 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readFloat(int) |
| 389 | */ |
| 390 | public float readFloat(int index) { |
| 391 | return parseNumber(readAndTrim(index)).floatValue(); |
| 392 | } |
| 393 | |
| 394 | /* |
| 395 | * (non-Javadoc) |
| 396 | * |
| 397 | * @see |
| 398 | * org.springframework.batch.item.file.mapping.IFieldSet#readFloat(java. |
| 399 | * lang.String) |
| 400 | */ |
| 401 | public float readFloat(String name) { |
| 402 | return readFloat(indexOf(name)); |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * (non-Javadoc) |
| 407 | * |
| 408 | * @see |
| 409 | * org.springframework.batch.item.file.mapping.IFieldSet#readDouble(int) |
| 410 | */ |
| 411 | public double readDouble(int index) { |
| 412 | return (Double) parseNumber(readAndTrim(index)).doubleValue(); |
| 413 | } |
| 414 | |
| 415 | /* |
| 416 | * (non-Javadoc) |
| 417 | * |
| 418 | * @see |
| 419 | * org.springframework.batch.item.file.mapping.IFieldSet#readDouble(java |
| 420 | * .lang.String) |
| 421 | */ |
| 422 | public double readDouble(String name) { |
| 423 | return readDouble(indexOf(name)); |
| 424 | } |
| 425 | |
| 426 | /* |
| 427 | * (non-Javadoc) |
| 428 | * |
| 429 | * @see |
| 430 | * org.springframework.batch.item.file.mapping.IFieldSet#readBigDecimal(int) |
| 431 | */ |
| 432 | public BigDecimal readBigDecimal(int index) { |
| 433 | return readBigDecimal(index, null); |
| 434 | } |
| 435 | |
| 436 | /* |
| 437 | * (non-Javadoc) |
| 438 | * |
| 439 | * @see |
| 440 | * org.springframework.batch.item.file.mapping.IFieldSet#readBigDecimal( |
| 441 | * java.lang.String) |
| 442 | */ |
| 443 | public BigDecimal readBigDecimal(String name) { |
| 444 | return readBigDecimal(name, null); |
| 445 | } |
| 446 | |
| 447 | /* |
| 448 | * (non-Javadoc) |
| 449 | * |
| 450 | * @see |
| 451 | * org.springframework.batch.item.file.mapping.IFieldSet#readBigDecimal(int, |
| 452 | * java.math.BigDecimal) |
| 453 | */ |
| 454 | public BigDecimal readBigDecimal(int index, BigDecimal defaultValue) { |
| 455 | String candidate = readAndTrim(index); |
| 456 | |
| 457 | if (!StringUtils.hasText(candidate)) { |
| 458 | return defaultValue; |
| 459 | } |
| 460 | |
| 461 | try { |
| 462 | String result = removeSeparators(candidate); |
| 463 | return new BigDecimal(result); |
| 464 | } |
| 465 | catch (NumberFormatException e) { |
| 466 | throw new NumberFormatException("Unparseable number: " + candidate); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | private String removeSeparators(String candidate) { |
| 471 | return candidate.replace(grouping, "").replace(decimal, "."); |
| 472 | } |
| 473 | |
| 474 | /* |
| 475 | * (non-Javadoc) |
| 476 | * |
| 477 | * @see |
| 478 | * org.springframework.batch.item.file.mapping.IFieldSet#readBigDecimal( |
| 479 | * java.lang.String, java.math.BigDecimal) |
| 480 | */ |
| 481 | public BigDecimal readBigDecimal(String name, BigDecimal defaultValue) { |
| 482 | try { |
| 483 | return readBigDecimal(indexOf(name), defaultValue); |
| 484 | } |
| 485 | catch (NumberFormatException e) { |
| 486 | throw new NumberFormatException(e.getMessage() + ", name: [" + name + "]"); |
| 487 | } |
| 488 | catch (IllegalArgumentException e) { |
| 489 | throw new IllegalArgumentException(e.getMessage() + ", name: [" + name + "]"); |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | /* |
| 494 | * (non-Javadoc) |
| 495 | * |
| 496 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readDate(int) |
| 497 | */ |
| 498 | public Date readDate(int index) { |
| 499 | return parseDate(readAndTrim(index), dateFormat); |
| 500 | } |
| 501 | |
| 502 | /* |
| 503 | * (non-Javadoc) |
| 504 | * |
| 505 | * @see org.springframework.batch.item.file.transform.FieldSet#readDate(int, |
| 506 | * java.util.Date) |
| 507 | */ |
| 508 | public Date readDate(int index, Date defaultValue) { |
| 509 | try { |
| 510 | return readDate(index); |
| 511 | } |
| 512 | catch (IllegalArgumentException e) { |
| 513 | return defaultValue; |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | /* |
| 518 | * (non-Javadoc) |
| 519 | * |
| 520 | * @see |
| 521 | * org.springframework.batch.item.file.mapping.IFieldSet#readDate(java.lang |
| 522 | * .String) |
| 523 | */ |
| 524 | public Date readDate(String name) { |
| 525 | try { |
| 526 | return readDate(indexOf(name)); |
| 527 | } |
| 528 | catch (IllegalArgumentException e) { |
| 529 | throw new IllegalArgumentException(e.getMessage() + ", name: [" + name + "]"); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | /* |
| 534 | * (non-Javadoc) |
| 535 | * |
| 536 | * @see org.springframework.batch.item.file.transform.FieldSet#readDate(int, |
| 537 | * java.util.Date) |
| 538 | */ |
| 539 | public Date readDate(String name, Date defaultValue) { |
| 540 | try { |
| 541 | return readDate(name); |
| 542 | } |
| 543 | catch (IllegalArgumentException e) { |
| 544 | return defaultValue; |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | /* |
| 549 | * (non-Javadoc) |
| 550 | * |
| 551 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readDate(int, |
| 552 | * java.lang.String) |
| 553 | */ |
| 554 | public Date readDate(int index, String pattern) { |
| 555 | SimpleDateFormat sdf = new SimpleDateFormat(pattern); |
| 556 | sdf.setLenient(false); |
| 557 | return parseDate(readAndTrim(index), sdf); |
| 558 | } |
| 559 | |
| 560 | /* |
| 561 | * (non-Javadoc) |
| 562 | * |
| 563 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readDate(int, |
| 564 | * java.lang.String) |
| 565 | */ |
| 566 | public Date readDate(int index, String pattern, Date defaultValue) { |
| 567 | try { |
| 568 | return readDate(index, pattern); |
| 569 | } |
| 570 | catch (IllegalArgumentException e) { |
| 571 | return defaultValue; |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | /* |
| 576 | * (non-Javadoc) |
| 577 | * |
| 578 | * @see |
| 579 | * org.springframework.batch.item.file.mapping.IFieldSet#readDate(java.lang |
| 580 | * .String, java.lang.String) |
| 581 | */ |
| 582 | public Date readDate(String name, String pattern) { |
| 583 | try { |
| 584 | return readDate(indexOf(name), pattern); |
| 585 | } |
| 586 | catch (IllegalArgumentException e) { |
| 587 | throw new IllegalArgumentException(e.getMessage() + ", name: [" + name + "]"); |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | /* |
| 592 | * (non-Javadoc) |
| 593 | * |
| 594 | * @see org.springframework.batch.item.file.mapping.IFieldSet#readDate(int, |
| 595 | * java.lang.String) |
| 596 | */ |
| 597 | public Date readDate(String name, String pattern, Date defaultValue) { |
| 598 | try { |
| 599 | return readDate(name, pattern); |
| 600 | } |
| 601 | catch (IllegalArgumentException e) { |
| 602 | return defaultValue; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | /* |
| 607 | * (non-Javadoc) |
| 608 | * |
| 609 | * @see |
| 610 | * org.springframework.batch.item.file.mapping.IFieldSet#getFieldCount() |
| 611 | */ |
| 612 | public int getFieldCount() { |
| 613 | return tokens.length; |
| 614 | } |
| 615 | |
| 616 | /** |
| 617 | * Read and trim the {@link String} value at '<code>index</code>'. |
| 618 | * |
| 619 | * @returns null if the field value is <code>null</code>. |
| 620 | */ |
| 621 | protected String readAndTrim(int index) { |
| 622 | String value = tokens[index]; |
| 623 | |
| 624 | if (value != null) { |
| 625 | return value.trim(); |
| 626 | } |
| 627 | else { |
| 628 | return null; |
| 629 | } |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * Read and trim the {@link String} value from column with given ' |
| 634 | * <code>name</code>. |
| 635 | * |
| 636 | * @throws IllegalArgumentException if a column with given name is not |
| 637 | * defined. |
| 638 | */ |
| 639 | protected int indexOf(String name) { |
| 640 | if (names == null) { |
| 641 | throw new IllegalArgumentException("Cannot access columns by name without meta data"); |
| 642 | } |
| 643 | int index = names.indexOf(name); |
| 644 | if (index >= 0) { |
| 645 | return index; |
| 646 | } |
| 647 | throw new IllegalArgumentException("Cannot access column [" + name + "] from " + names); |
| 648 | } |
| 649 | |
| 650 | public String toString() { |
| 651 | if (names != null) { |
| 652 | return getProperties().toString(); |
| 653 | } |
| 654 | |
| 655 | return tokens == null ? "" : Arrays.asList(tokens).toString(); |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * @see java.lang.Object#equals(java.lang.Object) |
| 660 | */ |
| 661 | public boolean equals(Object object) { |
| 662 | if (object instanceof DefaultFieldSet) { |
| 663 | DefaultFieldSet fs = (DefaultFieldSet) object; |
| 664 | |
| 665 | if (this.tokens == null) { |
| 666 | return fs.tokens == null; |
| 667 | } |
| 668 | else { |
| 669 | return Arrays.equals(this.tokens, fs.tokens); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | return false; |
| 674 | } |
| 675 | |
| 676 | public int hashCode() { |
| 677 | // this algorithm was taken from java 1.5 jdk Arrays.hashCode(Object[]) |
| 678 | if (tokens == null) { |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | int result = 1; |
| 683 | |
| 684 | for (int i = 0; i < tokens.length; i++) { |
| 685 | result = 31 * result + (tokens[i] == null ? 0 : tokens[i].hashCode()); |
| 686 | } |
| 687 | |
| 688 | return result; |
| 689 | } |
| 690 | |
| 691 | /* |
| 692 | * (non-Javadoc) |
| 693 | * |
| 694 | * @see |
| 695 | * org.springframework.batch.item.file.mapping.IFieldSet#getProperties() |
| 696 | */ |
| 697 | public Properties getProperties() { |
| 698 | if (names == null) { |
| 699 | throw new IllegalStateException("Cannot create properties without meta data"); |
| 700 | } |
| 701 | Properties props = new Properties(); |
| 702 | for (int i = 0; i < tokens.length; i++) { |
| 703 | String value = readAndTrim(i); |
| 704 | if (value != null) { |
| 705 | props.setProperty((String) names.get(i), value); |
| 706 | } |
| 707 | } |
| 708 | return props; |
| 709 | } |
| 710 | |
| 711 | private Number parseNumber(String candidate) { |
| 712 | try { |
| 713 | return numberFormat.parse(candidate); |
| 714 | } |
| 715 | catch (ParseException e) { |
| 716 | throw new NumberFormatException("Unparseable number: " + candidate); |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | private Date parseDate(String readAndTrim, DateFormat dateFormat) { |
| 721 | try { |
| 722 | return dateFormat.parse(readAndTrim); |
| 723 | } |
| 724 | catch (ParseException e) { |
| 725 | String pattern; |
| 726 | if (dateFormat instanceof SimpleDateFormat) { |
| 727 | pattern = ((SimpleDateFormat) dateFormat).toPattern(); |
| 728 | } |
| 729 | else { |
| 730 | pattern = dateFormat.toString(); |
| 731 | } |
| 732 | throw new IllegalArgumentException(e.getMessage() + ", format: [" + pattern + "]"); |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | } |