| 1 | /* ============================================================= |
| 2 | * SmallSQL : a free Java DBMS library for the Java(tm) platform |
| 3 | * ============================================================= |
| 4 | * |
| 5 | * (C) Copyright 2004-2006, by Volker Berlin. |
| 6 | * |
| 7 | * Project Info: http://www.smallsql.de/ |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or modify it |
| 10 | * under the terms of the GNU Lesser General Public License as published by |
| 11 | * the Free Software Foundation; either version 2.1 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 16 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| 17 | * License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with this library; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| 22 | * USA. |
| 23 | * |
| 24 | * [Java is a trademark or registered trademark of Sun Microsystems, Inc. |
| 25 | * in the United States and other countries.] |
| 26 | * |
| 27 | * --------------- |
| 28 | * ExpressionArithmethic.java |
| 29 | * --------------- |
| 30 | * Author: Volker Berlin |
| 31 | * |
| 32 | */ |
| 33 | package smallsql.database; |
| 34 | |
| 35 | import java.sql.*; |
| 36 | |
| 37 | |
| 38 | public class ExpressionArithmetic extends Expression { |
| 39 | |
| 40 | private Expression left; |
| 41 | private Expression right; |
| 42 | private Expression right2; |
| 43 | private Expression[] inList; |
| 44 | final private int operation; |
| 45 | |
| 46 | /** |
| 47 | * Constructor for NOT, NEGATIVE, BIT_NOT, ISNULL and ISNOTNULL |
| 48 | */ |
| 49 | ExpressionArithmetic( Expression right, int operation){ |
| 50 | super(FUNCTION); |
| 51 | this.right = right; |
| 52 | this.operation = operation; |
| 53 | super.setParams( new Expression[]{ right }); |
| 54 | } |
| 55 | |
| 56 | ExpressionArithmetic( Expression left, Expression right, int operation){ |
| 57 | super(FUNCTION); |
| 58 | this.left = left; |
| 59 | this.right = right; |
| 60 | this.operation = operation; |
| 61 | super.setParams( new Expression[]{ left, right }); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Constructor for BETWEEN |
| 66 | */ |
| 67 | ExpressionArithmetic( Expression left, Expression right, Expression right2, int operation){ |
| 68 | super(FUNCTION); |
| 69 | this.left = left; |
| 70 | this.right = right; |
| 71 | this.right2 = right2; |
| 72 | this.operation = operation; |
| 73 | super.setParams( new Expression[]{ left, right, right2 }); |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * Constructor for IN |
| 78 | */ |
| 79 | ExpressionArithmetic( Expression left, Expressions inList, int operation){ |
| 80 | super(FUNCTION); |
| 81 | this.left = left; |
| 82 | this.operation = operation; |
| 83 | Expression[] params; |
| 84 | if(inList != null){ |
| 85 | this.inList = inList.toArray(); |
| 86 | params = new Expression[this.inList.length+1]; |
| 87 | params[0] = left; |
| 88 | System.arraycopy(this.inList, 0, params, 1, this.inList.length); |
| 89 | }else{ |
| 90 | params = new Expression[]{ left }; |
| 91 | } |
| 92 | super.setParams( params ); |
| 93 | } |
| 94 | |
| 95 | |
| 96 | final void setParamAt( Expression param, int idx){ |
| 97 | switch(idx){ |
| 98 | case 0: |
| 99 | left = param; |
| 100 | break; |
| 101 | case 1: |
| 102 | right = param; |
| 103 | break; |
| 104 | case 2: |
| 105 | right2 = param; |
| 106 | break; |
| 107 | } |
| 108 | if(inList != null && idx>0 && idx<=inList.length){ |
| 109 | inList[idx+1] = param; |
| 110 | } |
| 111 | super.setParamAt( param, idx ); |
| 112 | } |
| 113 | |
| 114 | |
| 115 | /** |
| 116 | * Is used in GroupResult. |
| 117 | */ |
| 118 | public boolean equals(Object expr){ |
| 119 | if(!super.equals(expr)) return false; |
| 120 | if(!(expr instanceof ExpressionArithmetic)) return false; |
| 121 | if( ((ExpressionArithmetic)expr).operation != operation) return false; |
| 122 | return true; |
| 123 | } |
| 124 | |
| 125 | |
| 126 | |
| 127 | int getInt() throws java.lang.Exception { |
| 128 | if(isNull()) return 0; |
| 129 | int dataType = getDataType(); |
| 130 | switch(dataType){ |
| 131 | case SQLTokenizer.BIT: |
| 132 | case SQLTokenizer.BOOLEAN: |
| 133 | return getBoolean() ? 1 : 0; |
| 134 | case SQLTokenizer.TINYINT: |
| 135 | case SQLTokenizer.SMALLINT: |
| 136 | case SQLTokenizer.INT: |
| 137 | return getIntImpl(); |
| 138 | case SQLTokenizer.BIGINT: |
| 139 | return (int)getLongImpl(); |
| 140 | case SQLTokenizer.REAL: |
| 141 | return (int)getFloatImpl(); |
| 142 | case SQLTokenizer.FLOAT: |
| 143 | case SQLTokenizer.DOUBLE: |
| 144 | case SQLTokenizer.MONEY: |
| 145 | case SQLTokenizer.SMALLMONEY: |
| 146 | case SQLTokenizer.NUMERIC: |
| 147 | case SQLTokenizer.DECIMAL: |
| 148 | return (int)getDoubleImpl(); |
| 149 | } |
| 150 | throw createUnspportedConversion( SQLTokenizer.INT); |
| 151 | } |
| 152 | |
| 153 | |
| 154 | private int getIntImpl() throws java.lang.Exception { |
| 155 | switch(operation){ |
| 156 | case ADD: return left.getInt() + right.getInt(); |
| 157 | case SUB: return left.getInt() - right.getInt(); |
| 158 | case MUL: return left.getInt() * right.getInt(); |
| 159 | case DIV: return left.getInt() / right.getInt(); |
| 160 | case NEGATIVE: return - right.getInt(); |
| 161 | case MOD: return left.getInt() % right.getInt(); |
| 162 | case BIT_NOT: return ~ right.getInt(); |
| 163 | } |
| 164 | throw createUnspportedConversion( SQLTokenizer.INT); |
| 165 | } |
| 166 | |
| 167 | |
| 168 | long getLong() throws java.lang.Exception { |
| 169 | if(isNull()) return 0; |
| 170 | int dataType = getDataType(); |
| 171 | switch(dataType){ |
| 172 | case SQLTokenizer.BIT: |
| 173 | case SQLTokenizer.BOOLEAN: |
| 174 | return getBoolean() ? 1 : 0; |
| 175 | case SQLTokenizer.TINYINT: |
| 176 | case SQLTokenizer.SMALLINT: |
| 177 | case SQLTokenizer.INT: |
| 178 | return getIntImpl(); |
| 179 | case SQLTokenizer.BIGINT: |
| 180 | return getLongImpl(); |
| 181 | case SQLTokenizer.REAL: |
| 182 | return (long)getFloatImpl(); |
| 183 | case SQLTokenizer.FLOAT: |
| 184 | case SQLTokenizer.DOUBLE: |
| 185 | case SQLTokenizer.MONEY: |
| 186 | case SQLTokenizer.SMALLMONEY: |
| 187 | case SQLTokenizer.NUMERIC: |
| 188 | case SQLTokenizer.DECIMAL: |
| 189 | return (long)getDoubleImpl(); |
| 190 | } |
| 191 | throw createUnspportedConversion( SQLTokenizer.LONG); |
| 192 | } |
| 193 | |
| 194 | |
| 195 | private long getLongImpl() throws java.lang.Exception { |
| 196 | if(isNull()) return 0; |
| 197 | switch(operation){ |
| 198 | case ADD: return left.getLong() + right.getLong(); |
| 199 | case SUB: return left.getLong() - right.getLong(); |
| 200 | case MUL: return left.getLong() * right.getLong(); |
| 201 | case DIV: return left.getLong() / right.getLong(); |
| 202 | case NEGATIVE: return - right.getLong(); |
| 203 | case MOD: return left.getLong() % right.getLong(); |
| 204 | case BIT_NOT: return ~ right.getInt(); |
| 205 | } |
| 206 | throw createUnspportedConversion( SQLTokenizer.LONG); |
| 207 | } |
| 208 | |
| 209 | |
| 210 | double getDouble() throws java.lang.Exception { |
| 211 | if(isNull()) return 0; |
| 212 | int dataType = getDataType(); |
| 213 | switch(dataType){ |
| 214 | case SQLTokenizer.BIT: |
| 215 | case SQLTokenizer.BOOLEAN: |
| 216 | return getBoolean() ? 1 : 0; |
| 217 | case SQLTokenizer.TINYINT: |
| 218 | case SQLTokenizer.SMALLINT: |
| 219 | case SQLTokenizer.INT: |
| 220 | return getIntImpl(); |
| 221 | case SQLTokenizer.BIGINT: |
| 222 | return getLongImpl(); |
| 223 | case SQLTokenizer.REAL: |
| 224 | return getFloatImpl(); |
| 225 | case SQLTokenizer.FLOAT: |
| 226 | case SQLTokenizer.DOUBLE: |
| 227 | case SQLTokenizer.MONEY: |
| 228 | case SQLTokenizer.SMALLMONEY: |
| 229 | case SQLTokenizer.NUMERIC: |
| 230 | case SQLTokenizer.DECIMAL: |
| 231 | return getDoubleImpl(); |
| 232 | } |
| 233 | throw createUnspportedConversion( SQLTokenizer.DOUBLE); |
| 234 | } |
| 235 | |
| 236 | |
| 237 | private double getDoubleImpl() throws java.lang.Exception{ |
| 238 | if(operation == NEGATIVE) |
| 239 | return getDoubleImpl(0, right.getDouble()); |
| 240 | return getDoubleImpl(left.getDouble(), right.getDouble()); |
| 241 | } |
| 242 | |
| 243 | |
| 244 | private double getDoubleImpl( double lVal, double rVal) throws java.lang.Exception{ |
| 245 | switch(operation){ |
| 246 | case ADD: return lVal + rVal; |
| 247 | case SUB: return lVal - rVal; |
| 248 | case MUL: return lVal * rVal; |
| 249 | case DIV: return lVal / rVal; |
| 250 | case NEGATIVE: return - rVal; |
| 251 | case MOD: return lVal % rVal; |
| 252 | } |
| 253 | throw createUnspportedConversion( SQLTokenizer.DOUBLE); |
| 254 | } |
| 255 | |
| 256 | |
| 257 | float getFloat() throws java.lang.Exception { |
| 258 | if(isNull()) return 0; |
| 259 | int dataType = getDataType(); |
| 260 | switch(dataType){ |
| 261 | case SQLTokenizer.BIT: |
| 262 | case SQLTokenizer.BOOLEAN: |
| 263 | return getBoolean() ? 1 : 0; |
| 264 | case SQLTokenizer.TINYINT: |
| 265 | case SQLTokenizer.SMALLINT: |
| 266 | case SQLTokenizer.INT: |
| 267 | return getIntImpl(); |
| 268 | case SQLTokenizer.BIGINT: |
| 269 | return getLongImpl(); |
| 270 | case SQLTokenizer.REAL: |
| 271 | return getFloatImpl(); |
| 272 | case SQLTokenizer.FLOAT: |
| 273 | case SQLTokenizer.DOUBLE: |
| 274 | case SQLTokenizer.MONEY: |
| 275 | case SQLTokenizer.SMALLMONEY: |
| 276 | case SQLTokenizer.NUMERIC: |
| 277 | case SQLTokenizer.DECIMAL: |
| 278 | return (float)getDoubleImpl(); |
| 279 | } |
| 280 | throw createUnspportedConversion( SQLTokenizer.DOUBLE); |
| 281 | } |
| 282 | |
| 283 | |
| 284 | private float getFloatImpl() throws java.lang.Exception { |
| 285 | switch(operation){ |
| 286 | case ADD: return left.getFloat() + right.getFloat(); |
| 287 | case SUB: return left.getFloat() - right.getFloat(); |
| 288 | case MUL: return left.getFloat() * right.getFloat(); |
| 289 | case DIV: return left.getFloat() / right.getFloat(); |
| 290 | case NEGATIVE: return - right.getFloat(); |
| 291 | case MOD: return left.getFloat() % right.getFloat(); |
| 292 | } |
| 293 | throw createUnspportedConversion( SQLTokenizer.REAL ); |
| 294 | } |
| 295 | |
| 296 | |
| 297 | long getMoney() throws java.lang.Exception { |
| 298 | if(isNull()) return 0; |
| 299 | int dataType = getDataType(); |
| 300 | switch(dataType){ |
| 301 | case SQLTokenizer.BIT: |
| 302 | case SQLTokenizer.BOOLEAN: |
| 303 | return getBoolean() ? 10000 : 0; |
| 304 | case SQLTokenizer.TINYINT: |
| 305 | case SQLTokenizer.SMALLINT: |
| 306 | case SQLTokenizer.INT: |
| 307 | return getIntImpl() * 10000; |
| 308 | case SQLTokenizer.BIGINT: |
| 309 | return getLongImpl() * 10000; |
| 310 | case SQLTokenizer.REAL: |
| 311 | return Utils.doubleToMoney( getFloatImpl() ); |
| 312 | case SQLTokenizer.FLOAT: |
| 313 | case SQLTokenizer.DOUBLE: |
| 314 | case SQLTokenizer.NUMERIC: |
| 315 | case SQLTokenizer.DECIMAL: |
| 316 | return Utils.doubleToMoney( getDoubleImpl() ); |
| 317 | case SQLTokenizer.MONEY: |
| 318 | case SQLTokenizer.SMALLMONEY: |
| 319 | return getMoneyImpl(); |
| 320 | } |
| 321 | throw createUnspportedConversion( SQLTokenizer.DOUBLE); |
| 322 | } |
| 323 | |
| 324 | |
| 325 | private long getMoneyImpl() throws java.lang.Exception { |
| 326 | switch(operation){ |
| 327 | case ADD: return left.getMoney() + right.getMoney(); |
| 328 | case SUB: return left.getMoney() - right.getMoney(); |
| 329 | case MUL: return left.getMoney() * right.getMoney() / 10000; |
| 330 | case DIV: return left.getMoney() * 10000 / right.getMoney(); |
| 331 | case NEGATIVE: return - right.getMoney(); |
| 332 | } |
| 333 | throw createUnspportedConversion( SQLTokenizer.MONEY ); |
| 334 | } |
| 335 | |
| 336 | |
| 337 | MutableNumeric getNumeric() throws java.lang.Exception { |
| 338 | if(isNull()) return null; |
| 339 | int dataType = getDataType(); |
| 340 | switch(dataType){ |
| 341 | case SQLTokenizer.BIT: |
| 342 | case SQLTokenizer.BOOLEAN: |
| 343 | return new MutableNumeric(getBoolean() ? 1 : 0); |
| 344 | case SQLTokenizer.TINYINT: |
| 345 | case SQLTokenizer.SMALLINT: |
| 346 | case SQLTokenizer.INT: |
| 347 | return new MutableNumeric(getIntImpl()); |
| 348 | case SQLTokenizer.BIGINT: |
| 349 | return new MutableNumeric(getLongImpl()); |
| 350 | case SQLTokenizer.REAL: |
| 351 | return new MutableNumeric(getFloatImpl()); |
| 352 | case SQLTokenizer.FLOAT: |
| 353 | case SQLTokenizer.DOUBLE: |
| 354 | return new MutableNumeric( getDoubleImpl() ); |
| 355 | case SQLTokenizer.NUMERIC: |
| 356 | case SQLTokenizer.DECIMAL: |
| 357 | return getNumericImpl(); |
| 358 | case SQLTokenizer.MONEY: |
| 359 | case SQLTokenizer.SMALLMONEY: |
| 360 | return new MutableNumeric(getMoneyImpl(),4); |
| 361 | } |
| 362 | throw createUnspportedConversion( SQLTokenizer.DOUBLE); |
| 363 | } |
| 364 | |
| 365 | |
| 366 | private MutableNumeric getNumericImpl() throws java.lang.Exception { |
| 367 | switch(operation){ |
| 368 | case ADD: |
| 369 | { |
| 370 | MutableNumeric num = left.getNumeric(); |
| 371 | num.add( right.getNumeric() ); |
| 372 | return num; |
| 373 | } |
| 374 | case SUB: |
| 375 | { |
| 376 | MutableNumeric num = left.getNumeric(); |
| 377 | num.sub( right.getNumeric() ); |
| 378 | return num; |
| 379 | } |
| 380 | case MUL: |
| 381 | if(getDataType(right.getDataType(), SQLTokenizer.INT) == SQLTokenizer.INT){ |
| 382 | MutableNumeric num = left.getNumeric(); |
| 383 | num.mul(right.getInt()); |
| 384 | return num; |
| 385 | }else |
| 386 | if(getDataType(left.getDataType(), SQLTokenizer.INT) == SQLTokenizer.INT){ |
| 387 | MutableNumeric num = right.getNumeric(); |
| 388 | num.mul(left.getInt()); |
| 389 | return num; |
| 390 | }else{ |
| 391 | MutableNumeric num = left.getNumeric(); |
| 392 | num.mul( right.getNumeric() ); |
| 393 | return num; |
| 394 | } |
| 395 | case DIV: |
| 396 | { |
| 397 | MutableNumeric num = left.getNumeric(); |
| 398 | if(getDataType(right.getDataType(), SQLTokenizer.INT) == SQLTokenizer.INT) |
| 399 | num.div( right.getInt() ); |
| 400 | else |
| 401 | num.div( right.getNumeric() ); |
| 402 | return num; |
| 403 | } |
| 404 | case NEGATIVE: |
| 405 | { |
| 406 | MutableNumeric num = right.getNumeric(); |
| 407 | num.signum = -num.signum; |
| 408 | return num; |
| 409 | } |
| 410 | case MOD: |
| 411 | { |
| 412 | if(getDataType(getDataType(), SQLTokenizer.INT) == SQLTokenizer.INT) |
| 413 | return new MutableNumeric(getInt()); |
| 414 | MutableNumeric num = left.getNumeric(); |
| 415 | num.mod( right.getNumeric() ); |
| 416 | return num; |
| 417 | } |
| 418 | default: throw createUnspportedConversion( SQLTokenizer.NUMERIC ); |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | |
| 423 | Object getObject() throws java.lang.Exception { |
| 424 | if(isNull()) return null; |
| 425 | int dataType = getDataType(); |
| 426 | switch(dataType){ |
| 427 | case SQLTokenizer.BIT: |
| 428 | case SQLTokenizer.BOOLEAN: |
| 429 | return getBoolean() ? Boolean.TRUE : Boolean.FALSE; |
| 430 | case SQLTokenizer.BINARY: |
| 431 | case SQLTokenizer.VARBINARY: |
| 432 | return getBytes(); |
| 433 | case SQLTokenizer.TINYINT: |
| 434 | case SQLTokenizer.SMALLINT: |
| 435 | case SQLTokenizer.INT: |
| 436 | return new Integer( getInt() ); |
| 437 | case SQLTokenizer.BIGINT: |
| 438 | return new Long( getLong() ); |
| 439 | case SQLTokenizer.REAL: |
| 440 | return new Float( getFloat() ); |
| 441 | case SQLTokenizer.FLOAT: |
| 442 | case SQLTokenizer.DOUBLE: |
| 443 | return new Double( getDouble() ); |
| 444 | case SQLTokenizer.MONEY: |
| 445 | case SQLTokenizer.SMALLMONEY: |
| 446 | return Money.createFromUnscaledValue( getMoney() ); |
| 447 | case SQLTokenizer.NUMERIC: |
| 448 | case SQLTokenizer.DECIMAL: |
| 449 | return getNumeric(); |
| 450 | case SQLTokenizer.CHAR: |
| 451 | case SQLTokenizer.NCHAR: |
| 452 | case SQLTokenizer.VARCHAR: |
| 453 | case SQLTokenizer.NVARCHAR: |
| 454 | case SQLTokenizer.LONGNVARCHAR: |
| 455 | case SQLTokenizer.LONGVARCHAR: |
| 456 | return getString( left.getString(), right.getString() ); |
| 457 | case SQLTokenizer.JAVA_OBJECT: |
| 458 | Object lObj = left.getObject(); |
| 459 | //FIXME NullPointerException bei NEGATIVE |
| 460 | Object rObj = right.getObject(); |
| 461 | if(lObj instanceof Number && rObj instanceof Number) |
| 462 | return new Double( getDoubleImpl( ((Number)lObj).doubleValue(), ((Number)rObj).doubleValue() ) ); |
| 463 | else |
| 464 | return getString( lObj.toString(), rObj.toString() ); |
| 465 | case SQLTokenizer.LONGVARBINARY: |
| 466 | return getBytes(); |
| 467 | case SQLTokenizer.DATE: |
| 468 | case SQLTokenizer.TIME: |
| 469 | case SQLTokenizer.TIMESTAMP: |
| 470 | case SQLTokenizer.SMALLDATETIME: |
| 471 | return new DateTime( getLong(), dataType ); |
| 472 | case SQLTokenizer.UNIQUEIDENTIFIER: |
| 473 | return getBytes(); |
| 474 | default: throw createUnspportedDataType(); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | |
| 479 | boolean getBoolean() throws java.lang.Exception { |
| 480 | switch(operation){ |
| 481 | case OR: return left.getBoolean() || right.getBoolean(); |
| 482 | case AND: return left.getBoolean() && right.getBoolean(); |
| 483 | case NOT: return !right.getBoolean(); |
| 484 | case LIKE: return Utils.like( left.getString(), right.getString()); |
| 485 | case ISNULL:return right.isNull(); |
| 486 | case ISNOTNULL: return !right.isNull(); |
| 487 | case IN: if(right == null) |
| 488 | return isInList(); |
| 489 | break; |
| 490 | } |
| 491 | final boolean rightIsNull = right.isNull(); |
| 492 | int dataType; |
| 493 | if(operation == NEGATIVE || operation == BIT_NOT){ |
| 494 | if(rightIsNull) return false; |
| 495 | dataType = right.getDataType(); |
| 496 | }else{ |
| 497 | final boolean leftIsNull = left.isNull(); |
| 498 | if(operation == EQUALS_NULL && leftIsNull && rightIsNull) return true; |
| 499 | if(leftIsNull || rightIsNull) return false; |
| 500 | dataType = getDataType(left, right); |
| 501 | } |
| 502 | switch(dataType){ |
| 503 | case SQLTokenizer.BOOLEAN: |
| 504 | switch(operation){ |
| 505 | case IN: |
| 506 | case EQUALS_NULL: |
| 507 | case EQUALS: return left.getBoolean() == right.getBoolean(); |
| 508 | case UNEQUALS: return left.getBoolean() != right.getBoolean(); |
| 509 | } |
| 510 | //break; interpret it as BIT |
| 511 | case SQLTokenizer.TINYINT: |
| 512 | case SQLTokenizer.SMALLINT: |
| 513 | case SQLTokenizer.INT: |
| 514 | case SQLTokenizer.BIT: |
| 515 | switch(operation){ |
| 516 | case IN: |
| 517 | case EQUALS_NULL: |
| 518 | case EQUALS: return left.getInt() == right.getInt(); |
| 519 | case GREATER: return left.getInt() > right.getInt(); |
| 520 | case GRE_EQU: return left.getInt() >= right.getInt(); |
| 521 | case LESSER: return left.getInt() < right.getInt(); |
| 522 | case LES_EQU: return left.getInt() <= right.getInt(); |
| 523 | case UNEQUALS: return left.getInt() != right.getInt(); |
| 524 | case BETWEEN: |
| 525 | int _left = left.getInt(); |
| 526 | return _left >= right.getInt() && right2.getInt() >= _left; |
| 527 | default: |
| 528 | return getInt() != 0; |
| 529 | } |
| 530 | case SQLTokenizer.BIGINT: |
| 531 | case SQLTokenizer.TIMESTAMP: |
| 532 | case SQLTokenizer.TIME: |
| 533 | case SQLTokenizer.DATE: |
| 534 | case SQLTokenizer.SMALLDATETIME: |
| 535 | switch(operation){ |
| 536 | case IN: |
| 537 | case EQUALS_NULL: |
| 538 | case EQUALS: return left.getLong() == right.getLong(); |
| 539 | case GREATER: return left.getLong() > right.getLong(); |
| 540 | case GRE_EQU: return left.getLong() >= right.getLong(); |
| 541 | case LESSER: return left.getLong() < right.getLong(); |
| 542 | case LES_EQU: return left.getLong() <= right.getLong(); |
| 543 | case UNEQUALS: return left.getLong() != right.getLong(); |
| 544 | case BETWEEN: |
| 545 | long _left = left.getLong(); |
| 546 | return _left >= right.getLong() && right2.getLong() >= _left; |
| 547 | default: |
| 548 | return getLong() != 0; |
| 549 | } |
| 550 | case SQLTokenizer.REAL: |
| 551 | switch(operation){ |
| 552 | case IN: |
| 553 | case EQUALS_NULL: |
| 554 | case EQUALS: return left.getFloat() == right.getFloat(); |
| 555 | case GREATER: return left.getFloat() > right.getFloat(); |
| 556 | case GRE_EQU: return left.getFloat() >= right.getFloat(); |
| 557 | case LESSER: return left.getFloat() < right.getFloat(); |
| 558 | case LES_EQU: return left.getFloat() <= right.getFloat(); |
| 559 | case UNEQUALS: return left.getFloat() != right.getFloat(); |
| 560 | case BETWEEN: |
| 561 | float _left = left.getFloat(); |
| 562 | return _left >= right.getFloat() && right2.getFloat() >= _left; |
| 563 | default: |
| 564 | return getFloat() != 0; |
| 565 | } |
| 566 | case SQLTokenizer.FLOAT: |
| 567 | case SQLTokenizer.DOUBLE: |
| 568 | switch(operation){ |
| 569 | case IN: |
| 570 | case EQUALS_NULL: |
| 571 | case EQUALS: return left.getDouble() == right.getDouble(); |
| 572 | case GREATER: return left.getDouble() > right.getDouble(); |
| 573 | case GRE_EQU: return left.getDouble() >= right.getDouble(); |
| 574 | case LESSER: return left.getDouble() < right.getDouble(); |
| 575 | case LES_EQU: return left.getDouble() <= right.getDouble(); |
| 576 | case UNEQUALS: return left.getDouble() != right.getDouble(); |
| 577 | case BETWEEN: |
| 578 | double _left = left.getDouble(); |
| 579 | return _left >= right.getDouble() && right2.getDouble() >= _left; |
| 580 | default: |
| 581 | return getDouble() != 0; |
| 582 | } |
| 583 | case SQLTokenizer.MONEY: |
| 584 | case SQLTokenizer.SMALLMONEY: |
| 585 | switch(operation){ |
| 586 | case IN: |
| 587 | case EQUALS_NULL: |
| 588 | case EQUALS: return left.getMoney() == right.getMoney(); |
| 589 | case GREATER: return left.getMoney() > right.getMoney(); |
| 590 | case GRE_EQU: return left.getMoney() >= right.getMoney(); |
| 591 | case LESSER: return left.getMoney() < right.getMoney(); |
| 592 | case LES_EQU: return left.getMoney() <= right.getMoney(); |
| 593 | case UNEQUALS: return left.getMoney() != right.getMoney(); |
| 594 | case BETWEEN: |
| 595 | long _left = left.getMoney(); |
| 596 | return _left >= right.getMoney() && right2.getMoney() >= _left; |
| 597 | default: |
| 598 | return getMoney() != 0; |
| 599 | } |
| 600 | case SQLTokenizer.DECIMAL: |
| 601 | case SQLTokenizer.NUMERIC:{ |
| 602 | if(operation == NEGATIVE) |
| 603 | return right.getNumeric().signum != 0; |
| 604 | int comp = left.getNumeric().compareTo( right.getNumeric() ); |
| 605 | switch(operation){ |
| 606 | case IN: |
| 607 | case EQUALS_NULL: |
| 608 | case EQUALS: return comp == 0; |
| 609 | case GREATER: return comp > 0; |
| 610 | case GRE_EQU: return comp >= 0; |
| 611 | case LESSER: return comp < 0; |
| 612 | case LES_EQU: return comp <= 0; |
| 613 | case UNEQUALS: return comp != 0; |
| 614 | case BETWEEN: |
| 615 | return comp >= 0 && 0 >= left.getNumeric().compareTo( right2.getNumeric() ); |
| 616 | default: |
| 617 | return getNumeric().signum != 0; |
| 618 | } |
| 619 | } |
| 620 | case SQLTokenizer.VARCHAR: |
| 621 | case SQLTokenizer.NVARCHAR: |
| 622 | case SQLTokenizer.CHAR: |
| 623 | case SQLTokenizer.NCHAR: |
| 624 | case SQLTokenizer.LONGVARCHAR: |
| 625 | case SQLTokenizer.LONGNVARCHAR: |
| 626 | case SQLTokenizer.CLOB:{ |
| 627 | int comp = String.CASE_INSENSITIVE_ORDER.compare( left.getString(), right.getString() ); |
| 628 | switch(operation){ |
| 629 | case IN: |
| 630 | case EQUALS_NULL: |
| 631 | case EQUALS: return comp == 0; |
| 632 | case GREATER: return comp > 0; |
| 633 | case GRE_EQU: return comp >= 0; |
| 634 | case LESSER: return comp < 0; |
| 635 | case LES_EQU: return comp <= 0; |
| 636 | case UNEQUALS: return comp != 0; |
| 637 | case BETWEEN: |
| 638 | return comp >= 0 && 0 >= String.CASE_INSENSITIVE_ORDER.compare( left.getString(), right2.getString() ); |
| 639 | case ADD: return Utils.string2boolean(left.getString() + right.getString()); |
| 640 | } |
| 641 | break;} |
| 642 | case SQLTokenizer.BINARY: |
| 643 | case SQLTokenizer.VARBINARY: |
| 644 | case SQLTokenizer.LONGVARBINARY: |
| 645 | case SQLTokenizer.BLOB: |
| 646 | case SQLTokenizer.UNIQUEIDENTIFIER:{ |
| 647 | byte[] leftBytes = left.getBytes(); |
| 648 | byte[] rightBytes= right.getBytes(); |
| 649 | int comp = Utils.compareBytes( leftBytes, rightBytes); |
| 650 | switch(operation){ |
| 651 | case IN: |
| 652 | case EQUALS_NULL: |
| 653 | case EQUALS: return comp == 0; |
| 654 | case GREATER: return comp > 0; |
| 655 | case GRE_EQU: return comp >= 0; |
| 656 | case LESSER: return comp < 0; |
| 657 | case LES_EQU: return comp <= 0; |
| 658 | case UNEQUALS: return comp != 0; |
| 659 | case BETWEEN: |
| 660 | return comp >= 0 && 0 >= Utils.compareBytes( leftBytes, right2.getBytes() ); |
| 661 | } |
| 662 | break;} |
| 663 | } |
| 664 | throw createUnspportedDataType(); |
| 665 | } |
| 666 | |
| 667 | |
| 668 | String getString() throws java.lang.Exception { |
| 669 | if(isNull()) return null; |
| 670 | return getObject().toString(); |
| 671 | } |
| 672 | |
| 673 | |
| 674 | final private String getString( String lVal, String rVal ) throws java.lang.Exception { |
| 675 | switch(operation){ |
| 676 | case ADD: return lVal + rVal; |
| 677 | } |
| 678 | throw createUnspportedConversion( SQLTokenizer.VARCHAR ); |
| 679 | } |
| 680 | |
| 681 | |
| 682 | int getDataType() { |
| 683 | switch(operation){ |
| 684 | case NEGATIVE: |
| 685 | case BIT_NOT: |
| 686 | return right.getDataType(); |
| 687 | case EQUALS: |
| 688 | case EQUALS_NULL: |
| 689 | case GREATER: |
| 690 | case GRE_EQU: |
| 691 | case LESSER: |
| 692 | case LES_EQU: |
| 693 | case UNEQUALS: |
| 694 | case BETWEEN: |
| 695 | case OR: |
| 696 | case AND: |
| 697 | case NOT: |
| 698 | case LIKE: |
| 699 | case ISNULL: |
| 700 | case ISNOTNULL: |
| 701 | return SQLTokenizer.BOOLEAN; |
| 702 | default: |
| 703 | return getDataType(left, right); |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | |
| 708 | int getScale(){ |
| 709 | int dataType = getDataType(); |
| 710 | switch(dataType){ |
| 711 | case SQLTokenizer.DECIMAL: |
| 712 | case SQLTokenizer.NUMERIC: |
| 713 | switch(operation){ |
| 714 | case ADD: |
| 715 | case SUB: |
| 716 | return Math.max(left.getScale(), right.getScale()); |
| 717 | case MUL: |
| 718 | return left.getScale() + right.getScale(); |
| 719 | case DIV: |
| 720 | return Math.max(left.getScale()+5, right.getScale()+4); |
| 721 | case NEGATIVE: |
| 722 | return right.getScale(); |
| 723 | case MOD: |
| 724 | return 0; |
| 725 | } |
| 726 | } |
| 727 | return getScale(dataType); |
| 728 | } |
| 729 | |
| 730 | |
| 731 | boolean isNull() throws Exception{ |
| 732 | switch(operation){ |
| 733 | case OR: |
| 734 | case AND: |
| 735 | case NOT: |
| 736 | case LIKE: |
| 737 | case ISNULL: |
| 738 | case ISNOTNULL: |
| 739 | case IN: |
| 740 | return false; //Boolesche Operationen liefern immer ein Ergebniss ???, midestends aber ISNULL und ISNOTNULL |
| 741 | case NEGATIVE: |
| 742 | case BIT_NOT: |
| 743 | return right.isNull(); |
| 744 | default: return left.isNull() || right.isNull(); |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | |
| 749 | byte[] getBytes() throws java.lang.Exception { |
| 750 | throw createUnspportedConversion( SQLTokenizer.BINARY ); |
| 751 | } |
| 752 | |
| 753 | |
| 754 | boolean isInList() throws Exception{ |
| 755 | if(left.isNull()) return false; |
| 756 | try{ |
| 757 | for(int i=0; i<inList.length; i++){ |
| 758 | right = inList[i]; |
| 759 | if(getBoolean()) return true; |
| 760 | } |
| 761 | }finally{ |
| 762 | right = null; |
| 763 | } |
| 764 | return false; |
| 765 | } |
| 766 | |
| 767 | |
| 768 | SQLException createUnspportedDataType(){ |
| 769 | return Utils.createSQLException("Unsupported data type '" + |
| 770 | SQLTokenizer.getKeyWord(getDataType(left, right)) + |
| 771 | "' for Operation '" + getKeywordFromOperation(operation)+'\''); |
| 772 | } |
| 773 | |
| 774 | |
| 775 | SQLException createUnspportedConversion( int dataType ){ |
| 776 | int type = left == null ? right.getDataType() : getDataType(left, right); |
| 777 | return Utils.createSQLException("Unsupported conversion to data type '" + |
| 778 | SQLTokenizer.getKeyWord(dataType) + |
| 779 | "' from data type '" + |
| 780 | SQLTokenizer.getKeyWord(type) + |
| 781 | "' for Operation '" + getKeywordFromOperation(operation)+'\''); |
| 782 | } |
| 783 | |
| 784 | |
| 785 | /** |
| 786 | * This method only for creating an error message. Thats there is no optimizing. |
| 787 | * @param value |
| 788 | * @return |
| 789 | */ |
| 790 | private static String getKeywordFromOperation(int operation){ |
| 791 | int token = 0; |
| 792 | for(int i=1; i<1000; i++){ |
| 793 | if(getOperationFromToken(i) == operation){ |
| 794 | token = i; |
| 795 | break; |
| 796 | } |
| 797 | } |
| 798 | if(operation == NEGATIVE) token = SQLTokenizer.MINUS; |
| 799 | if(operation == ISNOTNULL) token = SQLTokenizer.IS; |
| 800 | String keyword = SQLTokenizer.getKeyWord(token); |
| 801 | if(keyword == null) keyword = "" + (char)token; |
| 802 | return keyword; |
| 803 | } |
| 804 | |
| 805 | |
| 806 | static int getOperationFromToken( int value ){ |
| 807 | switch(value){ |
| 808 | case SQLTokenizer.PLUS: return ADD; |
| 809 | case SQLTokenizer.MINUS: return SUB; |
| 810 | case SQLTokenizer.ASTERISK: return MUL; |
| 811 | case SQLTokenizer.SLACH: return DIV; |
| 812 | case SQLTokenizer.PERCENT: return MOD; |
| 813 | case SQLTokenizer.EQUALS: return EQUALS; |
| 814 | case SQLTokenizer.GREATER: return GREATER; |
| 815 | case SQLTokenizer.GREATER_EQU: return GRE_EQU; |
| 816 | case SQLTokenizer.LESSER: return LESSER; |
| 817 | case SQLTokenizer.LESSER_EQU: return LES_EQU; |
| 818 | case SQLTokenizer.UNEQUALS: return UNEQUALS; |
| 819 | case SQLTokenizer.BETWEEN: return BETWEEN; |
| 820 | case SQLTokenizer.LIKE: return LIKE; |
| 821 | case SQLTokenizer.IN: return IN; |
| 822 | case SQLTokenizer.IS: return ISNULL; |
| 823 | case SQLTokenizer.OR: return OR; |
| 824 | case SQLTokenizer.AND: return AND; |
| 825 | case SQLTokenizer.NOT: return NOT; |
| 826 | case SQLTokenizer.BIT_OR: return BIT_OR; |
| 827 | case SQLTokenizer.BIT_AND: return BIT_AND; |
| 828 | case SQLTokenizer.BIT_XOR: return BIT_XOR; |
| 829 | case SQLTokenizer.TILDE: return BIT_NOT; |
| 830 | default: return 0; |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | |
| 835 | /** |
| 836 | * Returns the higher level data type from 2 expressions. |
| 837 | */ |
| 838 | static int getDataType(Expression left, Expression right){ |
| 839 | int typeLeft = left.getDataType(); |
| 840 | int typeRight = right.getDataType(); |
| 841 | return getDataType( typeLeft, typeRight); |
| 842 | } |
| 843 | |
| 844 | |
| 845 | /** |
| 846 | * Return the best data type for a complex number operation. This method return only |
| 847 | * SQLTokenizer.INT, |
| 848 | * SQLTokenizer.BIGINT, |
| 849 | * SQLTokenizer.MONEY, |
| 850 | * SQLTokenizer.DECIMAL or |
| 851 | * SQLTokenizer.DOUBLE. |
| 852 | * @param paramDataType |
| 853 | */ |
| 854 | static int getBestNumberDataType(int paramDataType){ |
| 855 | int dataTypeIdx = Utils.indexOf( paramDataType, DatatypeRange); |
| 856 | if(dataTypeIdx >= NVARCHAR_IDX) |
| 857 | return SQLTokenizer.DOUBLE; |
| 858 | if(dataTypeIdx >= INT_IDX) |
| 859 | return SQLTokenizer.INT; |
| 860 | if(dataTypeIdx >= BIGINT_IDX) |
| 861 | return SQLTokenizer.BIGINT; |
| 862 | if(dataTypeIdx >= MONEY_IDX) |
| 863 | return SQLTokenizer.MONEY; |
| 864 | if(dataTypeIdx >= DECIMAL_IDX) |
| 865 | return SQLTokenizer.DECIMAL; |
| 866 | return SQLTokenizer.DOUBLE; |
| 867 | } |
| 868 | |
| 869 | /** |
| 870 | * Returns the higher level data type from 2 data types. |
| 871 | */ |
| 872 | static int getDataType(int typeLeft, int typeRight){ |
| 873 | if(typeLeft == typeRight) return typeLeft; |
| 874 | |
| 875 | int dataTypeIdx = Math.min( Utils.indexOf( typeLeft, DatatypeRange), Utils.indexOf( typeRight, DatatypeRange) ); |
| 876 | if(dataTypeIdx < 0) throw new Error("getDataType(): "+typeLeft+", "+typeRight); |
| 877 | return DatatypeRange[ dataTypeIdx ]; |
| 878 | } |
| 879 | |
| 880 | |
| 881 | // value decade is the operation order |
| 882 | static final int OR = 11; // OR |
| 883 | static final int AND = 21; // AND |
| 884 | static final int NOT = 31; // NOT |
| 885 | static final int BIT_OR = 41; // | |
| 886 | static final int BIT_AND = 42; // & |
| 887 | static final int BIT_XOR = 43; // ^ |
| 888 | static final int EQUALS = 51; // = |
| 889 | static final int EQUALS_NULL= 52; // like Equals but (null = null) --> true |
| 890 | static final int GREATER = 53; // > |
| 891 | static final int GRE_EQU = 54; // >= |
| 892 | static final int LESSER = 55; // < |
| 893 | static final int LES_EQU = 56; // <= |
| 894 | static final int UNEQUALS = 57; // <> |
| 895 | static final int IN = 61; // IN |
| 896 | static final int BETWEEN = 62; // BETWEEN |
| 897 | static final int LIKE = 63; // LIKE |
| 898 | static final int ISNULL = 64; // IS NULL |
| 899 | static final int ISNOTNULL = ISNULL+1; // IS NOT NULL |
| 900 | static final int ADD = 71; // + |
| 901 | static final int SUB = 72; // - |
| 902 | static final int MUL = 81; // * |
| 903 | static final int DIV = 82; // / |
| 904 | static final int MOD = 83; // % |
| 905 | static final int BIT_NOT = 91; // ~ |
| 906 | static final int NEGATIVE =101; // - |
| 907 | |
| 908 | private static final int[] DatatypeRange = { |
| 909 | SQLTokenizer.TIMESTAMP, |
| 910 | SQLTokenizer.SMALLDATETIME, |
| 911 | SQLTokenizer.DATE, |
| 912 | SQLTokenizer.TIME, |
| 913 | SQLTokenizer.DOUBLE, |
| 914 | SQLTokenizer.FLOAT, |
| 915 | SQLTokenizer.REAL, |
| 916 | SQLTokenizer.DECIMAL, |
| 917 | SQLTokenizer.NUMERIC, |
| 918 | SQLTokenizer.MONEY, |
| 919 | SQLTokenizer.SMALLMONEY, |
| 920 | SQLTokenizer.BIGINT, |
| 921 | SQLTokenizer.INT, |
| 922 | SQLTokenizer.SMALLINT, |
| 923 | SQLTokenizer.TINYINT, |
| 924 | SQLTokenizer.BIT, |
| 925 | SQLTokenizer.BOOLEAN, |
| 926 | SQLTokenizer.LONGNVARCHAR, |
| 927 | SQLTokenizer.UNIQUEIDENTIFIER, |
| 928 | SQLTokenizer.NVARCHAR, |
| 929 | SQLTokenizer.NCHAR, |
| 930 | SQLTokenizer.VARCHAR, |
| 931 | SQLTokenizer.CHAR, |
| 932 | SQLTokenizer.LONGVARCHAR, |
| 933 | SQLTokenizer.CLOB, |
| 934 | SQLTokenizer.VARBINARY, |
| 935 | SQLTokenizer.BINARY, |
| 936 | SQLTokenizer.LONGVARBINARY, |
| 937 | SQLTokenizer.BLOB, |
| 938 | SQLTokenizer.NULL}; |
| 939 | |
| 940 | |
| 941 | private static int NVARCHAR_IDX = Utils.indexOf( SQLTokenizer.NVARCHAR, DatatypeRange); |
| 942 | private static int INT_IDX = Utils.indexOf( SQLTokenizer.INT, DatatypeRange); |
| 943 | private static int BIGINT_IDX = Utils.indexOf( SQLTokenizer.BIGINT, DatatypeRange); |
| 944 | private static int MONEY_IDX = Utils.indexOf( SQLTokenizer.MONEY, DatatypeRange); |
| 945 | private static int DECIMAL_IDX = Utils.indexOf( SQLTokenizer.DECIMAL, DatatypeRange); |
| 946 | } |