Source Code Cross Referenced for kelondroRow.java in  » Search-Engine » yacy » de » anomic » kelondro » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Search Engine » yacy » de.anomic.kelondro 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // kelondroRow.java
002:        // (C) 2006 by Michael Peter Christen; mc@anomic.de, Frankfurt a. M., Germany
003:        // first published 24.05.2006 on http://www.anomic.de
004:        //
005:        // This is a part of the kelondro database,
006:        // which is a part of YaCy, a peer-to-peer based web search engine
007:        //
008:        // $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
009:        // $LastChangedRevision: 1986 $
010:        // $LastChangedBy: orbiter $
011:        //
012:        // LICENSE
013:        // 
014:        // This program is free software; you can redistribute it and/or modify
015:        // it under the terms of the GNU General Public License as published by
016:        // the Free Software Foundation; either version 2 of the License, or
017:        // (at your option) any later version.
018:        //
019:        // This program is distributed in the hope that it will be useful,
020:        // but WITHOUT ANY WARRANTY; without even the implied warranty of
021:        // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
022:        // GNU General Public License for more details.
023:        //
024:        // You should have received a copy of the GNU General Public License
025:        // along with this program; if not, write to the Free Software
026:        // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
027:
028:        package de.anomic.kelondro;
029:
030:        import java.io.UnsupportedEncodingException;
031:        import java.util.ArrayList;
032:        import java.util.Comparator;
033:        import java.util.HashMap;
034:        import java.util.Map;
035:        import java.util.StringTokenizer;
036:
037:        import de.anomic.server.serverByteBuffer;
038:        import de.anomic.server.logging.serverLog;
039:
040:        public final class kelondroRow {
041:
042:            protected kelondroColumn[] row;
043:            protected int[] colstart;
044:            protected kelondroByteOrder objectOrder;
045:            public int objectsize;
046:            public int primaryKeyIndex, primaryKeyLength;
047:            protected Map<String, Object[]> nickref = null; // a mapping from nicknames to Object[2]{kelondroColumn, Integer(colstart)}
048:
049:            public kelondroRow(kelondroColumn[] row,
050:                    kelondroByteOrder objectOrder, int primaryKey) {
051:                assert objectOrder != null;
052:                this .objectOrder = objectOrder;
053:                this .row = row;
054:                assert (objectOrder != null);
055:                this .colstart = new int[row.length];
056:                this .objectsize = 0;
057:                for (int i = 0; i < row.length; i++) {
058:                    this .colstart[i] = this .objectsize;
059:                    this .objectsize += this .row[i].cellwidth;
060:                }
061:                this .primaryKeyIndex = primaryKey;
062:                this .primaryKeyLength = (primaryKey < 0) ? this .objectsize
063:                        : row[primaryKeyIndex].cellwidth;
064:            }
065:
066:            public kelondroRow(String structure, kelondroByteOrder objectOrder,
067:                    int primaryKey) {
068:                assert (objectOrder != null);
069:                this .objectOrder = objectOrder;
070:                // define row with row syntax
071:                // example:
072:                //# Structure=<pivot-12>,'=',<UDate-3>,<VDate-3>,<LCount-2>,<GCount-2>,<ICount-2>,<DCount-2>,<TLength-3>,<WACount-3>,<WUCount-3>,<Flags-1>
073:
074:                // parse pivot definition:
075:                structure.replace('=', ',');
076:
077:                // parse property part definition:
078:                int p = structure.indexOf('|');
079:                if (p < 0)
080:                    p = structure.length();
081:                ArrayList<kelondroColumn> l = new ArrayList<kelondroColumn>();
082:                String attr = structure.substring(0, p);
083:                StringTokenizer st = new StringTokenizer(attr, ",");
084:                while (st.hasMoreTokens()) {
085:                    l.add(new kelondroColumn(st.nextToken()));
086:                }
087:
088:                // define columns
089:                this .row = new kelondroColumn[l.size()];
090:                this .colstart = new int[row.length];
091:                this .objectsize = 0;
092:                for (int i = 0; i < l.size(); i++) {
093:                    this .colstart[i] = this .objectsize;
094:                    this .row[i] = (kelondroColumn) l.get(i);
095:                    this .objectsize += this .row[i].cellwidth;
096:                }
097:                this .primaryKeyIndex = primaryKey;
098:                this .primaryKeyLength = (primaryKey < 0) ? this .objectsize
099:                        : row[primaryKeyIndex].cellwidth;
100:            }
101:
102:            public final void setOrdering(kelondroByteOrder objectOrder,
103:                    int primaryKey) {
104:                assert (objectOrder != null);
105:                this .objectOrder = objectOrder;
106:                this .primaryKeyIndex = primaryKey;
107:                this .primaryKeyLength = (primaryKey < 0) ? this .objectsize
108:                        : row[primaryKeyIndex].cellwidth;
109:            }
110:
111:            public final kelondroOrder<byte[]> getOrdering() {
112:                return this .objectOrder;
113:            }
114:
115:            protected final void genNickRef() {
116:                if (nickref != null)
117:                    return;
118:                nickref = new HashMap<String, Object[]>(row.length);
119:                for (int i = 0; i < row.length; i++)
120:                    nickref.put(row[i].nickname, new Object[] { row[i],
121:                            new Integer(colstart[i]) });
122:            }
123:
124:            public final int columns() {
125:                return this .row.length;
126:            }
127:
128:            /*
129:            public final int objectsize() {
130:                return this.objectsize;
131:            }
132:             */
133:            public final kelondroColumn column(int col) {
134:                return row[col];
135:            }
136:
137:            public final int width(int column) {
138:                return this .row[column].cellwidth;
139:            }
140:
141:            public final int[] widths() {
142:                int[] w = new int[this .row.length];
143:                for (int i = 0; i < this .row.length; i++)
144:                    w[i] = row[i].cellwidth;
145:                return w;
146:            }
147:
148:            public final String toString() {
149:                StringBuffer s = new StringBuffer();
150:                s.append(row[0].toString());
151:                for (int i = 1; i < row.length; i++) {
152:                    s.append(", ");
153:                    s.append(row[i].toString());
154:                }
155:                return new String(s);
156:            }
157:
158:            public final Entry newEntry() {
159:                return new Entry();
160:            }
161:
162:            public final Entry newEntry(byte[] rowinstance) {
163:                if (rowinstance == null)
164:                    return null;
165:                //assert (rowinstance[0] != 0);
166:                assert (this .objectOrder.wellformed(rowinstance, 0,
167:                        row[0].cellwidth)) : "rowinstance[0] = "
168:                        + new String(rowinstance, 0, row[0].cellwidth) + " / "
169:                        + serverLog.arrayList(rowinstance, 0, row[0].cellwidth);
170:                if (!(this .objectOrder.wellformed(rowinstance, 0,
171:                        row[0].cellwidth)))
172:                    return null;
173:                return new Entry(rowinstance, false);
174:            }
175:
176:            public final Entry newEntry(Entry oldrow, int fromColumn) {
177:                if (oldrow == null)
178:                    return null;
179:                assert (oldrow.getColBytes(0)[0] != 0);
180:                assert (this .objectOrder.wellformed(oldrow.getColBytes(0), 0,
181:                        row[0].cellwidth));
182:                return new Entry(oldrow, fromColumn, false);
183:            }
184:
185:            public final Entry newEntry(byte[] rowinstance, int start,
186:                    boolean clone) {
187:                if (rowinstance == null)
188:                    return null;
189:                //assert (rowinstance[0] != 0);
190:                assert (this .objectOrder.wellformed(rowinstance, start,
191:                        row[0].cellwidth)) : "rowinstance = "
192:                        + new String(rowinstance);
193:                // this method offers the option to clone the content
194:                // this is necessary if it is known that the underlying byte array may change and therefore
195:                // the reference to the byte array does not contain the original content
196:                return new Entry(rowinstance, start, clone);
197:            }
198:
199:            public final Entry newEntry(byte[][] cells) {
200:                if (cells == null)
201:                    return null;
202:                assert (cells[0][0] != 0);
203:                assert (this .objectOrder.wellformed(cells[0], 0,
204:                        row[0].cellwidth));
205:                return new Entry(cells);
206:            }
207:
208:            public final Entry newEntry(String external, boolean decimalCardinal) {
209:                if (external == null)
210:                    return null;
211:                return new Entry(external, decimalCardinal);
212:            }
213:
214:            public final EntryIndex newEntryIndex(byte[] rowinstance, int index) {
215:                if (rowinstance == null)
216:                    return null;
217:                assert (rowinstance[0] != 0);
218:                assert (this .objectOrder.wellformed(rowinstance, 0,
219:                        row[0].cellwidth));
220:                return new EntryIndex(rowinstance, index);
221:            }
222:
223:            public static class EntryComparator extends
224:                    kelondroAbstractOrder<Entry> implements 
225:                    kelondroOrder<Entry>, Comparator<Entry> {
226:
227:                kelondroByteOrder base;
228:
229:                public EntryComparator(kelondroByteOrder baseOrder) {
230:                    this .base = baseOrder;
231:                }
232:
233:                public int compare(Entry a, Entry b) {
234:                    return a.compareTo(b);
235:                }
236:
237:                public kelondroOrder<Entry> clone() {
238:                    return new EntryComparator(base);
239:                }
240:
241:                public long cardinal(Entry key) {
242:                    return base.cardinal(key.getPrimaryKeyBytes());
243:                }
244:
245:                public String signature() {
246:                    return base.signature();
247:                }
248:
249:                public boolean wellformed(Entry a) {
250:                    return base.wellformed(a.getPrimaryKeyBytes());
251:                }
252:
253:            }
254:
255:            public class Entry implements  Comparable<Entry> {
256:
257:                private byte[] rowinstance;
258:                private int offset; // the offset where the row starts within rowinstance
259:
260:                public Entry() {
261:                    rowinstance = new byte[objectsize];
262:                    for (int i = 0; i < objectsize; i++)
263:                        this .rowinstance[i] = 0;
264:                    offset = 0;
265:                }
266:
267:                public Entry(byte[] newrow, boolean forceclone) {
268:                    this (newrow, 0, forceclone);
269:                }
270:
271:                public Entry(Entry oldrow, int fromColumn, boolean forceclone) {
272:                    this (oldrow.rowinstance, oldrow.offset
273:                            + oldrow.colstart(fromColumn), forceclone);
274:                }
275:
276:                public Entry(byte[] newrow, int start, boolean forceclone) {
277:                    if ((!forceclone) && (newrow.length - start >= objectsize)) {
278:                        this .rowinstance = newrow;
279:                        this .offset = start;
280:                    } else {
281:                        this .rowinstance = new byte[objectsize];
282:                        System.arraycopy(newrow, start, this .rowinstance, 0,
283:                                objectsize);
284:                        this .offset = 0;
285:                    }
286:                    //for (int i = ll; i < objectsize; i++) this.rowinstance[i] = 0;
287:                }
288:
289:                public Entry(byte[][] cols) {
290:                    assert row.length == cols.length : "cols.length = "
291:                            + cols.length + ", row.length = " + row.length;
292:                    this .rowinstance = new byte[objectsize];
293:                    this .offset = 0;
294:                    int ll;
295:                    int cs, cw;
296:                    for (int i = 0; i < row.length; i++) {
297:                        cs = colstart[i];
298:                        cw = row[i].cellwidth;
299:                        if ((i >= cols.length) || (cols[i] == null)) {
300:                            for (int j = 0; j < cw; j++)
301:                                this .rowinstance[cs + j] = 0;
302:                        } else {
303:                            //assert cols[i].length <= cw : "i = " + i + ", cols[i].length = " + cols[i].length + ", cw = " + cw;
304:                            ll = Math.min(cols[i].length, cw);
305:                            System.arraycopy(cols[i], 0, rowinstance, cs, ll);
306:                            for (int j = ll; j < cw; j++)
307:                                this .rowinstance[cs + j] = 0;
308:                        }
309:                    }
310:                }
311:
312:                public Entry(String external, boolean decimalCardinal) {
313:                    // parse external form
314:                    if (external.charAt(0) == '{')
315:                        external = external.substring(1, external.length() - 1);
316:                    String[] elts = external.split(",");
317:                    if (nickref == null)
318:                        genNickRef();
319:                    String nick;
320:                    int p;
321:                    this .rowinstance = new byte[objectsize];
322:                    this .offset = 0;
323:                    for (int i = 0; i < elts.length; i++) {
324:                        p = elts[i].indexOf('=');
325:                        if (p > 0) {
326:                            nick = elts[i].substring(0, p).trim();
327:                            if (p + 1 == elts[i].length())
328:                                setCol(nick, null);
329:                            else {
330:                                if ((decimalCardinal)
331:                                        && (row[i].celltype == kelondroColumn.celltype_cardinal)) {
332:                                    try {
333:                                        setCol(nick, Long.parseLong(elts[i]
334:                                                .substring(p + 1).trim()));
335:                                    } catch (NumberFormatException e) {
336:                                        serverLog.logSevere("kelondroRow",
337:                                                "NumberFormatException for celltype_cardinal; row = "
338:                                                        + i
339:                                                        + ", celltype = "
340:                                                        + row[i].celltype
341:                                                        + ", encoder = "
342:                                                        + row[i].encoder
343:                                                        + ", value = '"
344:                                                        + elts[i].substring(
345:                                                                p + 1).trim()
346:                                                        + "'");
347:                                        setCol(nick, 0);
348:                                    }
349:                                } else if ((decimalCardinal)
350:                                        && (row[i].celltype == kelondroColumn.celltype_binary)) {
351:                                    assert row[i].cellwidth == 1;
352:                                    try {
353:                                        setCol(nick,
354:                                                new byte[] { (byte) Integer
355:                                                        .parseInt(elts[i]
356:                                                                .substring(
357:                                                                        p + 1)
358:                                                                .trim()) });
359:                                    } catch (NumberFormatException e) {
360:                                        serverLog.logSevere("kelondroRow",
361:                                                "NumberFormatException for celltype_binary; row = "
362:                                                        + i
363:                                                        + ", celltype = "
364:                                                        + row[i].celltype
365:                                                        + ", encoder = "
366:                                                        + row[i].encoder
367:                                                        + ", value = '"
368:                                                        + elts[i].substring(
369:                                                                p + 1).trim()
370:                                                        + "'");
371:                                        setCol(nick, new byte[] { 0 });
372:                                    }
373:                                } else if ((decimalCardinal)
374:                                        && (row[i].celltype == kelondroColumn.celltype_bitfield)) {
375:                                    setCol(nick, (new kelondroBitfield(
376:                                            row[i].cellwidth, elts[i]
377:                                                    .substring(p + 1).trim()))
378:                                            .bytes());
379:                                } else {
380:                                    setCol(nick, elts[i].substring(p + 1)
381:                                            .trim().getBytes());
382:                                }
383:                            }
384:                        }
385:                    }
386:                }
387:
388:                protected final int colstart(int column) {
389:                    return colstart[column];
390:                }
391:
392:                protected final int cellwidth(int column) {
393:                    return row[column].cellwidth;
394:                }
395:
396:                public final int compareTo(Entry o) {
397:                    // compares only the content of the primary key
398:                    if (objectOrder == null)
399:                        throw new kelondroException(
400:                                "objects cannot be compared, no order given");
401:                    return objectOrder.compare(this .getPrimaryKeyBytes(),
402:                            ((Entry) o).getPrimaryKeyBytes());
403:                }
404:
405:                public final boolean equals(Entry otherEntry) {
406:                    // compares the content of the complete entry
407:                    byte[] t = this .bytes();
408:                    byte[] o = otherEntry.bytes();
409:                    if (o.length != t.length)
410:                        return false;
411:                    for (int i = 0; i < t.length; i++) {
412:                        if (t[i] != o[i])
413:                            return false;
414:                    }
415:                    return true;
416:                }
417:
418:                public final byte[] bytes() {
419:                    if ((offset == 0) && (rowinstance.length == objectsize)) {
420:                        return rowinstance;
421:                    } else {
422:                        byte[] tmp = new byte[objectsize];
423:                        System.arraycopy(rowinstance, offset, tmp, 0,
424:                                objectsize);
425:                        return tmp;
426:                    }
427:                }
428:
429:                public final void writeToArray(byte[] target, int targetOffset) {
430:                    // this method shall replace the byte()s where possible, bacause it may reduce the number of new byte[] allocations
431:                    assert (targetOffset + objectsize <= target.length) : "targetOffset = "
432:                            + targetOffset
433:                            + ", target.length = "
434:                            + target.length + ", objectsize = " + objectsize;
435:                    System.arraycopy(rowinstance, offset, target, targetOffset,
436:                            objectsize);
437:                }
438:
439:                public final int columns() {
440:                    return row.length;
441:                }
442:
443:                public final int objectsize() {
444:                    return objectsize;
445:                }
446:
447:                public final boolean empty(int column) {
448:                    return rowinstance[offset + colstart[column]] == 0;
449:                }
450:
451:                public final void setCol(String nickname, char c) {
452:                    if (nickref == null)
453:                        genNickRef();
454:                    Object[] ref = (Object[]) nickref.get(nickname);
455:                    if (ref == null)
456:                        return;
457:                    rowinstance[offset + ((Integer) ref[1]).intValue()] = (byte) c;
458:                }
459:
460:                public final void setCol(String nickname, byte[] cell) {
461:                    if (nickref == null)
462:                        genNickRef();
463:                    Object[] ref = (Object[]) nickref.get(nickname);
464:                    if (ref == null)
465:                        return;
466:                    kelondroColumn col = (kelondroColumn) ref[0];
467:                    setCol(col.encoder, ((Integer) ref[1]).intValue(),
468:                            col.cellwidth, cell);
469:                }
470:
471:                public final void setCol(int column, byte[] cell) {
472:                    setCol(row[column].encoder, colstart[column],
473:                            row[column].cellwidth, cell);
474:                }
475:
476:                public final void setCol(int column, char[] cell) {
477:                    int clstrt = colstart[column];
478:                    for (int i = 0; i < cell.length; i++)
479:                        rowinstance[offset + clstrt + i] = (byte) cell[i];
480:                    for (int i = cell.length; i < row[column].cellwidth; i++)
481:                        rowinstance[offset + clstrt + i] = 0;
482:                }
483:
484:                private final void setCol(int encoding, int clstrt, int length,
485:                        byte[] cell) {
486:                    if (cell == null) {
487:                        while (length-- > 0)
488:                            rowinstance[offset + clstrt + length] = 0;
489:                    } else {
490:                        if (cell.length < length) {
491:                            System.arraycopy(cell, 0, rowinstance, offset
492:                                    + clstrt, cell.length);
493:                            while (length-- > cell.length)
494:                                rowinstance[offset + clstrt + length] = 0;
495:                        } else {
496:                            //assert cell.length == length;
497:                            System.arraycopy(cell, 0, rowinstance, offset
498:                                    + clstrt, length);
499:                        }
500:                    }
501:                }
502:
503:                public final void setCol(int column, byte c) {
504:                    rowinstance[offset + colstart[column]] = c;
505:                }
506:
507:                public final void setCol(int column, String cell,
508:                        String encoding) {
509:                    if (encoding == null)
510:                        setCol(column, cell.getBytes());
511:                    else
512:                        try {
513:                            setCol(column, (cell == null) ? null : cell
514:                                    .getBytes(encoding));
515:                        } catch (UnsupportedEncodingException e) {
516:                            e.printStackTrace();
517:                        }
518:                }
519:
520:                public final void setCol(String nick, String cell,
521:                        String encoding) {
522:                    if (encoding == null)
523:                        setCol(nick, cell.getBytes());
524:                    else
525:                        try {
526:                            setCol(nick, cell.getBytes(encoding));
527:                        } catch (UnsupportedEncodingException e) {
528:                            e.printStackTrace();
529:                        }
530:                }
531:
532:                public final void setCol(String nickname, long cell) {
533:                    if (nickref == null)
534:                        genNickRef();
535:                    Object[] ref = (Object[]) nickref.get(nickname);
536:                    if (ref == null)
537:                        return;
538:                    kelondroColumn col = (kelondroColumn) ref[0];
539:                    setCol(col.encoder, offset + ((Integer) ref[1]).intValue(),
540:                            col.cellwidth, cell);
541:                }
542:
543:                public final void setCol(int column, long cell) {
544:                    // uses the column definition to choose the right encoding
545:                    setCol(row[column].encoder, offset + colstart[column],
546:                            row[column].cellwidth, cell);
547:                }
548:
549:                private final void setCol(int encoder, int offset, int length,
550:                        long cell) {
551:                    switch (encoder) {
552:                    case kelondroColumn.encoder_none:
553:                        throw new kelondroException("ROW",
554:                                "setColLong has celltype none, no encoder given");
555:                    case kelondroColumn.encoder_b64e:
556:                        kelondroBase64Order.enhancedCoder.encodeLong(cell,
557:                                rowinstance, offset, length);
558:                        break;
559:                    case kelondroColumn.encoder_b256:
560:                        kelondroNaturalOrder.encodeLong(cell, rowinstance,
561:                                offset, length);
562:                        break;
563:                    case kelondroColumn.encoder_bytes:
564:                        throw new kelondroException("ROW",
565:                                "setColLong of celltype bytes not applicable");
566:                    }
567:                }
568:
569:                public final byte[] getCol(String nickname, byte[] dflt) {
570:                    if (nickref == null)
571:                        genNickRef();
572:                    Object[] ref = (Object[]) nickref.get(nickname);
573:                    if (ref == null)
574:                        return dflt;
575:                    kelondroColumn col = (kelondroColumn) ref[0];
576:                    byte[] cell = new byte[col.cellwidth];
577:                    System.arraycopy(rowinstance, offset
578:                            + ((Integer) ref[1]).intValue(), cell, 0,
579:                            cell.length);
580:                    return cell;
581:                }
582:
583:                public final String getColString(String nickname, String dflt,
584:                        String encoding) {
585:                    if (nickref == null)
586:                        genNickRef();
587:                    Object[] ref = (Object[]) nickref.get(nickname);
588:                    if (ref == null)
589:                        return dflt;
590:                    kelondroColumn col = (kelondroColumn) ref[0];
591:                    return getColString(col.encoder, ((Integer) ref[1])
592:                            .intValue(), col.cellwidth, encoding);
593:                }
594:
595:                public final String getColString(int column, String encoding) {
596:                    return getColString(row[column].encoder, colstart[column],
597:                            row[column].cellwidth, encoding);
598:                }
599:
600:                private final String getColString(int encoder, int clstrt,
601:                        int length, String encoding) {
602:                    if (rowinstance[offset + clstrt] == 0)
603:                        return null;
604:                    if (length > rowinstance.length - offset - clstrt)
605:                        length = rowinstance.length - offset - clstrt;
606:                    while ((length > 0)
607:                            && (rowinstance[offset + clstrt + length - 1] == 0))
608:                        length--;
609:                    if (length == 0)
610:                        return null;
611:                    try {
612:                        if ((encoding == null) || (encoding.length() == 0))
613:                            return new String(rowinstance, offset + clstrt,
614:                                    length);
615:                        else
616:                            return new String(rowinstance, offset + clstrt,
617:                                    length, encoding);
618:                    } catch (UnsupportedEncodingException e) {
619:                        return "";
620:                    }
621:                }
622:
623:                public final long getColLong(String nickname, long dflt) {
624:                    if (nickref == null)
625:                        genNickRef();
626:                    Object[] ref = (Object[]) nickref.get(nickname);
627:                    if (ref == null)
628:                        return dflt;
629:                    kelondroColumn col = (kelondroColumn) ref[0];
630:                    int clstrt = ((Integer) ref[1]).intValue();
631:                    return getColLong(col.encoder, clstrt, col.cellwidth);
632:                }
633:
634:                public final long getColLong(int column) {
635:                    // uses the column definition to choose the right encoding
636:                    return getColLong(row[column].encoder, colstart[column],
637:                            row[column].cellwidth);
638:                }
639:
640:                protected final long getColLong(int encoder, int clstrt,
641:                        int length) {
642:                    switch (encoder) {
643:                    case kelondroColumn.encoder_none:
644:                        throw new kelondroException("ROW",
645:                                "getColLong has celltype none, no encoder given");
646:                    case kelondroColumn.encoder_b64e:
647:                        // start - fix for badly stored parameters
648:                        if ((length >= 3)
649:                                && (rowinstance[offset + clstrt] == '[')
650:                                && (rowinstance[offset + clstrt + 1] == 'B')
651:                                && (rowinstance[offset + clstrt + 2] == '@'))
652:                            return 0;
653:                        if ((length == 2)
654:                                && (rowinstance[offset + clstrt] == '[')
655:                                && (rowinstance[offset + clstrt + 1] == 'B'))
656:                            return 0;
657:                        if ((length == 1)
658:                                && (rowinstance[offset + clstrt] == '['))
659:                            return 0;
660:                        boolean maxvalue = true;
661:                        for (int i = 0; i < length; i++)
662:                            if (rowinstance[offset + clstrt + i] != '_') {
663:                                maxvalue = false;
664:                                break;
665:                            }
666:                        if (maxvalue)
667:                            return 0;
668:                        // stop - fix for badly stored parameters
669:                        return kelondroBase64Order.enhancedCoder.decodeLong(
670:                                rowinstance, offset + clstrt, length);
671:                    case kelondroColumn.encoder_b256:
672:                        return kelondroNaturalOrder.decodeLong(rowinstance,
673:                                offset + clstrt, length);
674:                    case kelondroColumn.encoder_bytes:
675:                        throw new kelondroException("ROW",
676:                                "getColLong of celltype bytes not applicable");
677:                    }
678:                    throw new kelondroException("ROW",
679:                            "getColLong did not find appropriate encoding");
680:                }
681:
682:                public final byte getColByte(String nickname, byte dflt) {
683:                    if (nickref == null)
684:                        genNickRef();
685:                    Object[] ref = (Object[]) nickref.get(nickname);
686:                    if (ref == null)
687:                        return dflt;
688:                    return rowinstance[offset + ((Integer) ref[1]).intValue()];
689:                }
690:
691:                public final byte getColByte(int column) {
692:                    return rowinstance[offset + colstart[column]];
693:                }
694:
695:                public final byte[] getPrimaryKeyBytes() {
696:                    byte[] c = new byte[primaryKeyLength];
697:                    System.arraycopy(rowinstance, offset
698:                            + ((primaryKeyIndex < 0) ? 0
699:                                    : colstart[primaryKeyIndex]), c, 0,
700:                            primaryKeyLength);
701:                    return c;
702:                }
703:
704:                public final byte[] getColBytes(int column) {
705:                    assert offset + colstart[column] + row[column].cellwidth <= rowinstance.length : "column = "
706:                            + column
707:                            + ", offset = "
708:                            + offset
709:                            + ", colstart[column] = "
710:                            + colstart[column]
711:                            + ", row[column].cellwidth() = "
712:                            + row[column].cellwidth
713:                            + ", rowinstance.length = "
714:                            + rowinstance.length;
715:                    int w = row[column].cellwidth;
716:                    byte[] c = new byte[w];
717:                    System.arraycopy(rowinstance, offset + colstart[column], c,
718:                            0, w);
719:                    return c;
720:                }
721:
722:                public final char[] getColChars(int column) {
723:                    int w = row[column].cellwidth;
724:                    char[] c = new char[w];
725:                    System.arraycopy(rowinstance, offset + colstart[column], c,
726:                            0, w);
727:                    return c;
728:                }
729:
730:                public final void writeToArray(int column, byte[] target,
731:                        int targetOffset) {
732:                    // this method shall replace the getColBytes where possible, bacause it may reduce the number of new byte[] allocations
733:                    assert (targetOffset + row[column].cellwidth <= target.length) : "targetOffset = "
734:                            + targetOffset
735:                            + ", target.length = "
736:                            + target.length
737:                            + ", row[column].cellwidth() = "
738:                            + row[column].cellwidth;
739:                    System.arraycopy(rowinstance, offset + colstart[column],
740:                            target, targetOffset, row[column].cellwidth);
741:                }
742:
743:                public final String toPropertyForm(boolean includeBraces,
744:                        boolean decimalCardinal, boolean longname) {
745:                    serverByteBuffer bb = new serverByteBuffer();
746:                    if (includeBraces)
747:                        bb.append('{');
748:                    for (int i = 0; i < row.length; i++) {
749:                        bb.append((longname) ? row[i].description
750:                                : row[i].nickname);
751:                        bb.append('=');
752:                        if ((decimalCardinal)
753:                                && (row[i].celltype == kelondroColumn.celltype_cardinal)) {
754:                            bb.append(Long.toString(getColLong(i)));
755:                        } else if ((decimalCardinal)
756:                                && (row[i].celltype == kelondroColumn.celltype_bitfield)) {
757:                            bb.append((new kelondroBitfield(getColBytes(i)))
758:                                    .exportB64());
759:                        } else if ((decimalCardinal)
760:                                && (row[i].celltype == kelondroColumn.celltype_binary)) {
761:                            assert row[i].cellwidth == 1;
762:                            bb.append(Integer.toString((0xff & getColByte(i))));
763:                        } else {
764:                            bb.append(rowinstance, offset + colstart[i],
765:                                    row[i].cellwidth);
766:                        }
767:                        if (i < row.length - 1) {
768:                            bb.append(',');
769:                            if (longname)
770:                                bb.append(' ');
771:                        }
772:                    }
773:                    if (includeBraces)
774:                        bb.append('}');
775:                    //System.out.println("DEBUG-ROW " + bb.toString());
776:                    return bb.toString();
777:                }
778:
779:                public final String toString() {
780:                    return toPropertyForm(true, false, false);
781:                }
782:
783:            }
784:
785:            public final class EntryIndex extends Entry {
786:                private int index;
787:
788:                public EntryIndex(byte[] row, int i) {
789:                    super (row, false);
790:                    this .index = i;
791:                }
792:
793:                public int index() {
794:                    return index;
795:                }
796:            }
797:
798:            public final static void long2bytes(long x, byte[] b, int offset,
799:                    int length) {
800:                for (int i = length - 1; i >= 0; i--) {
801:                    b[offset + i] = (byte) (x & 0XFF);
802:                    x >>= 8;
803:                }
804:            }
805:
806:            public final static long bytes2long(byte[] b, int offset, int length) {
807:                if (b == null)
808:                    return 0;
809:                long x = 0;
810:                for (int i = 0; i < length; i++)
811:                    x = (x << 8) | (0xff & b[offset + i]);
812:                return x;
813:            }
814:
815:            public final boolean subsumes(kelondroRow otherRow) {
816:                // returns true, if this row has at least all columns as the other row
817:                // and possibly some more
818:                if (this .objectsize < otherRow.objectsize)
819:                    return false;
820:                for (int i = 0; i < otherRow.row.length; i++) {
821:                    if ((this .row[i].cellwidth == otherRow.row[i].cellwidth)
822:                            && (this .row[i].celltype == kelondroColumn.celltype_bitfield)
823:                            && (otherRow.row[i].celltype == kelondroColumn.celltype_binary))
824:                        continue;
825:                    if (!(this .row[i].equals(otherRow.row[i])))
826:                        return false;
827:                }
828:                return true;
829:            }
830:
831:            public final boolean equals(kelondroRow otherRow) {
832:                if (this .objectsize != otherRow.objectsize)
833:                    return false;
834:                if (this .columns() != otherRow.columns())
835:                    return false;
836:                for (int i = 0; i < otherRow.row.length; i++) {
837:                    if (!(this .row[i].equals(otherRow.row[i])))
838:                        return false;
839:                }
840:                return true;
841:            }
842:
843:        }
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