001/*-
002 *******************************************************************************
003 * Copyright (c) 2011, 2016 Diamond Light Source Ltd.
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the Eclipse Public License v1.0
006 * which accompanies this distribution, and is available at
007 * http://www.eclipse.org/legal/epl-v10.html
008 *
009 * Contributors:
010 *    Peter Chang - initial API and implementation and/or initial documentation
011 *******************************************************************************/
012
013// This is generated from DoubleDataset.java by fromdouble.py
014
015package org.eclipse.january.dataset;
016
017import java.util.ArrayList;
018import java.util.Arrays;
019import java.util.List;
020import java.util.Set;
021import java.util.TreeSet;
022
023import org.eclipse.january.metadata.StatisticsMetadata;
024
025
026/**
027 * Extend dataset for boolean values // PRIM_TYPE
028 */
029public class BooleanDatasetBase extends AbstractDataset {
030        // pin UID to base class
031        private static final long serialVersionUID = Dataset.serialVersionUID;
032
033        protected boolean[] data; // subclass alias // PRIM_TYPE
034
035        @Override
036        protected void setData() {
037                data = (boolean[]) odata; // PRIM_TYPE
038        }
039
040        protected static boolean[] createArray(final int size) { // PRIM_TYPE
041                boolean[] array = null; // PRIM_TYPE
042
043                try {
044                        array = new boolean[size]; // PRIM_TYPE
045                } catch (OutOfMemoryError e) {
046                        logger.error("The size of the dataset ({}) that is being created is too large "
047                                        + "and there is not enough memory to hold it.", size);
048                        throw new OutOfMemoryError("The dimensions given are too large, and there is "
049                                        + "not enough memory available in the Java Virtual Machine");
050                }
051                return array;
052        }
053
054        @Override
055        public int getDType() {
056                return BOOL; // DATA_TYPE
057        }
058
059        /**
060         * Create a null dataset
061         */
062        BooleanDatasetBase() {
063        }
064
065        /**
066         * Create a zero-filled dataset of given shape
067         * @param shape
068         */
069        BooleanDatasetBase(final int... shape) {
070                if (shape != null) {
071                        size = ShapeUtils.calcSize(shape);
072                        this.shape = shape.clone();
073
074                        try {
075                                odata = data = createArray(size);
076                        } catch (Throwable t) {
077                                logger.error("Could not create a dataset of shape {}", Arrays.toString(shape), t);
078                                throw new IllegalArgumentException(t);
079                        }
080                }
081        }
082
083        /**
084         * Create a dataset using given data
085         * @param data
086         * @param shape
087         *            (can be null to create 1D dataset)
088         */
089        BooleanDatasetBase(final boolean[] data, int... shape) { // PRIM_TYPE
090                if (data == null) {
091                        throw new IllegalArgumentException("Data must not be null");
092                }
093                if (shape == null || shape.length == 0) {
094                        shape = new int[] { data.length };
095                }
096                size = ShapeUtils.calcSize(shape);
097                if (size != data.length) {
098                        throw new IllegalArgumentException(String.format("Shape %s is not compatible with size of data array, %d",
099                                        Arrays.toString(shape), data.length));
100                }
101                this.shape = size == 0 ? null : shape.clone();
102
103                odata = this.data = data;
104        }
105
106        /**
107         * Copy a dataset
108         * @param dataset
109         */
110        BooleanDatasetBase(final BooleanDatasetBase dataset) {
111                copyToView(dataset, this, true, true);
112
113                try {
114                        if (dataset.stride == null) {
115                                odata = data = dataset.data.clone();
116                        } else {
117                                offset = 0;
118                                stride = null;
119                                base = null;
120                                odata = data = createArray(size);
121
122                                IndexIterator iter = dataset.getIterator();
123                                for (int i = 0; iter.hasNext(); i++) {
124                                        data[i] = dataset.data[iter.index];
125                                }
126                        }
127                } catch (Throwable t) {
128                        logger.error("Could not create a dataset of shape {}", Arrays.toString(shape), t);
129                        throw new IllegalArgumentException(t);
130                }
131        }
132
133        /**
134         * Copy and cast a dataset to this class type
135         * @param dataset
136         */
137        BooleanDatasetBase(final Dataset dataset) {
138                copyToView(dataset, this, true, false);
139                offset = 0;
140                stride = null;
141                base = null;
142                try {
143                        odata = data = createArray(size);
144                } catch (Throwable t) {
145                        logger.error("Could not create a dataset of shape {}", Arrays.toString(shape), t);
146                        throw new IllegalArgumentException(t);
147                }
148                IndexIterator iter = dataset.getIterator();
149                for (int i = 0; iter.hasNext(); i++) {
150                        data[i] = dataset.getElementBooleanAbs(iter.index); // GET_ELEMENT_WITH_CAST
151                }
152        }
153
154        @Override
155        public boolean equals(Object obj) {
156                if (!super.equals(obj)) {
157                        return false;
158                }
159
160                if (getRank() == 0 && !getClass().equals(obj.getClass())) // already true for zero-rank dataset
161                        return true;
162
163                BooleanDatasetBase other = (BooleanDatasetBase) obj;
164//              if (size == 1) // for zero-rank datasets
165//                      return getAbs(offset) == other.getAbs(other.offset);
166
167                IndexIterator iter = getIterator();
168                IndexIterator oiter = other.getIterator();
169                while (iter.hasNext() && oiter.hasNext()) {
170                        if (data[iter.index] != other.data[oiter.index]) // OBJECT_UNEQUAL
171                                return false;
172                }
173                return true;
174        }
175
176        @Override
177        public int hashCode() {
178                return super.hashCode();
179        }
180
181        @Override
182        public BooleanDatasetBase clone() {
183                return new BooleanDatasetBase(this);
184        }
185
186        /**
187         * Create a dataset from an object which could be a Java list, array (of arrays...) or Number. Ragged
188         * sequences or arrays are padded with zeros.
189         *
190         * @param obj
191         * @return dataset with contents given by input
192         */
193        static BooleanDatasetBase createFromObject(final Object obj) {
194                BooleanDatasetBase result = new BooleanDatasetBase();
195
196                if (obj != null) {
197                        result.shape = ShapeUtils.getShapeFromObject(obj);
198                        result.size = ShapeUtils.calcSize(result.shape);
199
200                        try {
201                                result.odata = result.data = createArray(result.size);
202                        } catch (Throwable t) {
203                                logger.error("Could not create a dataset of shape {}", Arrays.toString(result.shape), t);
204                                throw new IllegalArgumentException(t);
205                        }
206
207                        int[] pos = new int[result.shape.length];
208                        result.fillData(obj, 0, pos);
209                }
210
211                return result;
212        }
213
214        /**
215         * @param shape
216         * @return a dataset filled with ones
217         */
218        static BooleanDatasetBase ones(final int... shape) {
219                return new BooleanDatasetBase(shape).fill(1);
220        }
221
222        @Override
223        public BooleanDatasetBase fill(final Object obj) {
224                setDirty();
225                boolean dv = DTypeUtils.toBoolean(obj); // PRIM_TYPE // FROM_OBJECT
226                IndexIterator iter = getIterator();
227                while (iter.hasNext()) {
228                        data[iter.index] = dv;
229                }
230
231                return this;
232        }
233
234        /**
235         * This is a typed version of {@link #getBuffer()}
236         * @return data buffer as linear array
237         */
238        public boolean[] getData() { // PRIM_TYPE
239                return data;
240        }
241
242        @Override
243        protected int getBufferLength() {
244                if (data == null)
245                        return 0;
246                return data.length;
247        }
248
249        @Override
250        public BooleanDatasetBase getView(boolean deepCopyMetadata) {
251                BooleanDatasetBase view = new BooleanDatasetBase();
252                copyToView(this, view, true, deepCopyMetadata);
253                view.setData();
254                return view;
255        }
256
257        /**
258         * Get a value from an absolute index of the internal array. This is an internal method with no checks so can be
259         * dangerous. Use with care or ideally with an iterator.
260         *
261         * @param index
262         *            absolute index
263         * @return value
264         */
265        public boolean getAbs(final int index) { // PRIM_TYPE
266                return data[index];
267        }
268
269        @Override
270        public boolean getElementBooleanAbs(final int index) {
271                return false;
272        }
273
274        @Override
275        public double getElementDoubleAbs(final int index) {
276                return 0;
277        }
278
279        @Override
280        public long getElementLongAbs(final int index) {
281                return 0;
282        }
283
284        @Override
285        public Object getObjectAbs(final int index) {
286                return data[index];
287        }
288
289        @Override
290        public String getStringAbs(final int index) {
291                return stringFormat == null ? String.format("%b", data[index]) : // FORMAT_STRING
292                        stringFormat.format(data[index]);
293        }
294
295        /**
296         * Set a value at absolute index in the internal array. This is an internal method with no checks so can be
297         * dangerous. Use with care or ideally with an iterator.
298         *
299         * @param index
300         *            absolute index
301         * @param val
302         *            new value
303         */
304        public void setAbs(final int index, final boolean val) { // PRIM_TYPE
305                setDirty();
306                data[index] = val;
307        }
308
309        @Override
310        protected void setItemDirect(final int dindex, final int sindex, final Object src) {
311                setDirty();
312                boolean[] dsrc = (boolean[]) src; // PRIM_TYPE
313                data[dindex] = dsrc[sindex];
314        }
315
316        @Override
317        public void setObjectAbs(final int index, final Object obj) {
318                if (index < 0 || index > data.length) {
319                        throw new IndexOutOfBoundsException("Index given is outside dataset");
320                }
321
322                setAbs(index, DTypeUtils.toBoolean(obj)); // FROM_OBJECT
323        }
324
325        /**
326         * @return item in first position
327         * @since 2.0
328         */
329        public boolean get() { // PRIM_TYPE
330                return data[getFirst1DIndex()];
331        }
332
333        /**
334         * @param i
335         * @return item in given position
336         */
337        public boolean get(final int i) { // PRIM_TYPE
338                return data[get1DIndex(i)];
339        }
340
341        /**
342         * @param i
343         * @param j
344         * @return item in given position
345         */
346        public boolean get(final int i, final int j) { // PRIM_TYPE
347                return data[get1DIndex(i, j)];
348        }
349
350        /**
351         * @param pos
352         * @return item in given position
353         */
354        public boolean get(final int... pos) { // PRIM_TYPE
355                return data[get1DIndex(pos)];
356        }
357
358        @Override
359        public Object getObject() {
360                return Boolean.valueOf(get()); // CLASS_TYPE
361        }
362
363        @Override
364        public Object getObject(final int i) {
365                return Boolean.valueOf(get(i)); // CLASS_TYPE
366        }
367
368        @Override
369        public Object getObject(final int i, final int j) {
370                return Boolean.valueOf(get(i, j)); // CLASS_TYPE
371        }
372
373        @Override
374        public Object getObject(final int... pos) {
375                return Boolean.valueOf(get(pos)); // CLASS_TYPE
376        }
377
378        @Override
379        public String getString() {
380                return getStringAbs(getFirst1DIndex());
381        }
382
383        @Override
384        public String getString(final int i) {
385                return getStringAbs(get1DIndex(i));
386        }
387
388        @Override
389        public String getString(final int i, final int j) {
390                return getStringAbs(get1DIndex(i, j));
391        }
392
393        @Override
394        public String getString(final int... pos) {
395                return getStringAbs(get1DIndex(pos));
396        }
397
398        @Override
399        public double getDouble() {
400                return 0;
401        }
402
403        @Override
404        public double getDouble(final int i) {
405                return 0;
406        }
407
408        @Override
409        public double getDouble(final int i, final int j) {
410                return 0;
411        }
412
413        @Override
414        public double getDouble(final int... pos) {
415                return 0;
416        }
417
418        @Override
419        public float getFloat() {
420                return 0;
421        }
422
423        @Override
424        public float getFloat(final int i) {
425                return 0;
426        }
427
428        @Override
429        public float getFloat(final int i, final int j) {
430                return 0;
431        }
432
433        @Override
434        public float getFloat(final int... pos) {
435                return 0;
436        }
437
438        @Override
439        public long getLong() {
440                return 0;
441        }
442
443        @Override
444        public long getLong(final int i) {
445                return 0;
446        }
447
448        @Override
449        public long getLong(final int i, final int j) {
450                return 0;
451        }
452
453        @Override
454        public long getLong(final int... pos) {
455                return 0;
456        }
457
458        @Override
459        public int getInt() {
460                return 0;
461        }
462
463        @Override
464        public int getInt(final int i) {
465                return 0;
466        }
467
468        @Override
469        public int getInt(final int i, final int j) {
470                return 0;
471        }
472
473        @Override
474        public int getInt(final int... pos) {
475                return 0;
476        }
477
478        @Override
479        public short getShort() {
480                return 0;
481        }
482
483        @Override
484        public short getShort(final int i) {
485                return 0;
486        }
487
488        @Override
489        public short getShort(final int i, final int j) {
490                return 0;
491        }
492
493        @Override
494        public short getShort(final int... pos) {
495                return 0;
496        }
497
498        @Override
499        public byte getByte() {
500                return 0;
501        }
502
503        @Override
504        public byte getByte(final int i) {
505                return 0;
506        }
507
508        @Override
509        public byte getByte(final int i, final int j) {
510                return 0;
511        }
512
513        @Override
514        public byte getByte(final int... pos) {
515                return 0;
516        }
517
518        @Override
519        public boolean getBoolean() {
520                return false;
521        }
522
523        @Override
524        public boolean getBoolean(final int i) {
525                return false;
526        }
527
528        @Override
529        public boolean getBoolean(final int i, final int j) {
530                return false;
531        }
532
533        @Override
534        public boolean getBoolean(final int... pos) {
535                return false;
536        }
537
538        /**
539         * Sets the value at first point to the passed value. The dataset must not be null
540         *
541         * @param value
542         * @since 2.0
543         */
544        public void setItem(final boolean value) { // PRIM_TYPE
545                setAbs(getFirst1DIndex(), value);
546        }
547
548        /**
549         * Sets the value at a particular point to the passed value. The dataset must be 1D
550         *
551         * @param value
552         * @param i
553         */
554        public void setItem(final boolean value, final int i) { // PRIM_TYPE
555                setAbs(get1DIndex(i), value);
556        }
557
558        /**
559         * Sets the value at a particular point to the passed value. The dataset must be 2D
560         *
561         * @param value
562         * @param i
563         * @param j
564         */
565        public void setItem(final boolean value, final int i, final int j) { // PRIM_TYPE
566                setAbs(get1DIndex(i, j), value);
567        }
568
569        /**
570         * Sets the value at a particular point to the passed value
571         *
572         * @param value
573         * @param pos
574         */
575        public void setItem(final boolean value, final int... pos) { // PRIM_TYPE
576                setAbs(get1DIndex(pos), value);
577        }
578
579        @Override
580        public void set(final Object obj) {
581                setItem(DTypeUtils.toBoolean(obj)); // FROM_OBJECT
582        }
583
584        @Override
585        public void set(final Object obj, final int i) {
586                setItem(DTypeUtils.toBoolean(obj), i); // FROM_OBJECT
587        }
588
589        @Override
590        public void set(final Object obj, final int i, final int j) {
591                setItem(DTypeUtils.toBoolean(obj), i, j); // FROM_OBJECT
592        }
593
594        @Override
595        public void set(final Object obj, int... pos) {
596                if (pos == null || (pos.length == 0 && shape.length > 0)) {
597                        pos = new int[shape.length];
598                }
599
600                setItem(DTypeUtils.toBoolean(obj), pos); // FROM_OBJECT
601        }
602
603
604        @Override
605        public void resize(int... newShape) {
606                setDirty();
607                final IndexIterator iter = getIterator();
608                final int nsize = ShapeUtils.calcSize(newShape);
609                final boolean[] ndata; // PRIM_TYPE
610                try {
611                        ndata = createArray(nsize);
612                } catch (Throwable t) {
613                        logger.error("Could not create a dataset of shape {}", Arrays.toString(shape), t);
614                        throw new IllegalArgumentException(t);
615                }
616                for (int i = 0; iter.hasNext() && i < nsize; i++) {
617                        ndata[i] = data[iter.index];
618                }
619
620                odata = data = ndata;
621                size = nsize;
622                shape = newShape;
623                stride = null;
624                offset = 0;
625                base = null;
626        }
627
628        @Override
629        public BooleanDatasetBase sort(Integer axis) {
630                throw new UnsupportedOperationException("Cannot sort dataset"); // BOOLEAN_USE
631        }
632
633        @Override
634        public BooleanDatasetBase getUniqueItems() {
635                Set<Boolean> set = new TreeSet<Boolean>(); // CLASS_TYPE
636                IndexIterator it = getIterator();
637                while (it.hasNext()) {
638                        set.add(data[it.index]);
639                }
640
641                BooleanDataset u = new BooleanDataset(set.size()); // CLASS_TYPE
642                int i = 0;
643                boolean[] udata = u.getData(); // PRIM_TYPE
644                for (Boolean v : set) { // CLASS_TYPE
645                        udata[i++] = v;
646                }
647                return u;
648        }
649
650        @Override
651        public BooleanDatasetBase getSlice(final SliceIterator siter) {
652                BooleanDatasetBase result = new BooleanDatasetBase(siter.getShape());
653                boolean[] rdata = result.data; // PRIM_TYPE
654
655                for (int i = 0; siter.hasNext(); i++)
656                        rdata[i] = data[siter.index];
657
658                result.setName(name + BLOCK_OPEN + Slice.createString(siter.shape, siter.start, siter.stop, siter.step) + BLOCK_CLOSE);
659                return result;
660        }
661
662        @Override
663        public void fillDataset(Dataset result, IndexIterator iter) {
664                setDirty();
665                IndexIterator riter = result.getIterator();
666
667                boolean[] rdata = ((BooleanDatasetBase) result).data; // PRIM_TYPE
668
669                while (riter.hasNext() && iter.hasNext()) {
670                        rdata[riter.index] = data[iter.index];
671                }
672        }
673
674        @Override
675        public BooleanDatasetBase setByBoolean(final Object obj, Dataset selection) {
676                setDirty();
677                if (obj instanceof Dataset) {
678                        final Dataset ds = (Dataset) obj;
679                        final int length = ((Number) selection.sum()).intValue();
680                        if (length != ds.getSize()) {
681                                throw new IllegalArgumentException(
682                                                "Number of true items in selection does not match number of items in dataset");
683                        }
684
685                        final IndexIterator oiter = ds.getIterator();
686                        final BooleanIterator biter = getBooleanIterator(selection);
687
688                        while (biter.hasNext() && oiter.hasNext()) {
689                                data[biter.index] = ds.getElementBooleanAbs(oiter.index); // GET_ELEMENT_WITH_CAST
690                        }
691                } else {
692                        final boolean dv = DTypeUtils.toBoolean(obj); // PRIM_TYPE // FROM_OBJECT
693                        final BooleanIterator biter = getBooleanIterator(selection);
694
695                        while (biter.hasNext()) {
696                                data[biter.index] = dv;
697                        }
698                }
699                return this;
700        }
701
702        @Override
703        public BooleanDatasetBase setBy1DIndex(final Object obj, final Dataset index) {
704                setDirty();
705                if (obj instanceof Dataset) {
706                        final Dataset ds = (Dataset) obj;
707                        if (index.getSize() != ds.getSize()) {
708                                throw new IllegalArgumentException(
709                                                "Number of items in index dataset does not match number of items in dataset");
710                        }
711
712                        final IndexIterator oiter = ds.getIterator();
713                        final IntegerIterator iter = new IntegerIterator(index, size);
714
715                        while (iter.hasNext() && oiter.hasNext()) {
716                                data[iter.index] = ds.getElementBooleanAbs(oiter.index); // GET_ELEMENT_WITH_CAST
717                        }
718                } else {
719                        final boolean dv = DTypeUtils.toBoolean(obj); // PRIM_TYPE // FROM_OBJECT
720                        IntegerIterator iter = new IntegerIterator(index, size);
721
722                        while (iter.hasNext()) {
723                                data[iter.index] = dv;
724                        }
725                }
726                return this;
727        }
728
729        @Override
730        public BooleanDatasetBase setByIndexes(final Object obj, final Object... indexes) {
731                setDirty();
732                final IntegersIterator iter = new IntegersIterator(shape, indexes);
733                final int[] pos = iter.getPos();
734
735                if (obj instanceof Dataset) {
736                        final Dataset ds = (Dataset) obj;
737                        if (ShapeUtils.calcSize(iter.getShape()) != ds.getSize()) {
738                                throw new IllegalArgumentException(
739                                                "Number of items in index datasets does not match number of items in dataset");
740                        }
741
742                        final IndexIterator oiter = ds.getIterator();
743
744                        while (iter.hasNext() && oiter.hasNext()) {
745                                setItem(ds.getElementBooleanAbs(oiter.index), pos); // GET_ELEMENT_WITH_CAST
746                        }
747                } else {
748                        final boolean dv = DTypeUtils.toBoolean(obj); // PRIM_TYPE // FROM_OBJECT
749
750                        while (iter.hasNext()) {
751                                setItem(dv, pos);
752                        }
753                }
754                return this;
755        }
756
757        @Override
758        BooleanDatasetBase setSlicedView(Dataset view, Dataset d) {
759                setDirty();
760                final BroadcastSelfIterator it = BroadcastSelfIterator.createIterator(view, d);
761
762                while (it.hasNext()) {
763                        data[it.aIndex] = d.getElementBooleanAbs(it.bIndex);
764                }
765                return this;
766        }
767
768        @Override
769        public BooleanDatasetBase setSlice(final Object obj, final IndexIterator siter) {
770                setDirty();
771
772                if (obj instanceof IDataset) {
773                        final IDataset ds = (IDataset) obj;
774                        final int[] oshape = ds.getShape();
775
776                        if (!ShapeUtils.areShapesCompatible(siter.getShape(), oshape)) {
777                                throw new IllegalArgumentException(String.format(
778                                                "Input dataset is not compatible with slice: %s cf %s", Arrays.toString(oshape),
779                                                Arrays.toString(siter.getShape())));
780                        }
781
782                        if (ds instanceof Dataset) {
783                                final Dataset ads = (Dataset) ds;
784                                final IndexIterator oiter = ads.getIterator();
785
786                                while (siter.hasNext() && oiter.hasNext())
787                                        data[siter.index] = ads.getElementBooleanAbs(oiter.index); // GET_ELEMENT_WITH_CAST
788                        } else {
789                                final IndexIterator oiter = new PositionIterator(oshape);
790                                final int[] pos = oiter.getPos();
791
792                                while (siter.hasNext() && oiter.hasNext())
793                                        data[siter.index] = ds.getBoolean(pos); // PRIM_TYPE
794                        }
795                } else {
796                        try {
797                                boolean v = DTypeUtils.toBoolean(obj); // PRIM_TYPE // FROM_OBJECT
798
799                                while (siter.hasNext())
800                                        data[siter.index] = v;
801                        } catch (IllegalArgumentException e) {
802                                throw new IllegalArgumentException("Object for setting slice is not a dataset or number");
803                        }
804                }
805                return this;
806        }
807
808        @Override
809        public void copyItemsFromAxes(final int[] pos, final boolean[] axes, final Dataset dest) {
810                boolean[] ddata = (boolean[]) dest.getBuffer(); // PRIM_TYPE
811
812                SliceIterator siter = getSliceIteratorFromAxes(pos, axes);
813                int[] sshape = ShapeUtils.squeezeShape(siter.getShape(), false);
814
815                IndexIterator diter = dest.getSliceIterator(null, sshape, null);
816
817                if (ddata.length < ShapeUtils.calcSize(sshape)) {
818                        throw new IllegalArgumentException("destination array is not large enough");
819                }
820
821                dest.setDirty();
822                while (siter.hasNext() && diter.hasNext()) {
823                        ddata[diter.index] = data[siter.index];
824                }
825        }
826
827        @Override
828        public void setItemsOnAxes(final int[] pos, final boolean[] axes, final Object src) {
829                setDirty();
830                boolean[] sdata = (boolean[]) src; // PRIM_TYPE
831
832                SliceIterator siter = getSliceIteratorFromAxes(pos, axes);
833
834                if (sdata.length < ShapeUtils.calcSize(siter.getShape())) {
835                        throw new IllegalArgumentException("destination array is not large enough");
836                }
837
838                for (int i = 0; siter.hasNext(); i++) {
839                        data[siter.index] = sdata[i];
840                }
841        }
842
843        private List<int[]> findPositions(final boolean value) { // PRIM_TYPE
844                IndexIterator iter = getIterator(true);
845                List<int[]> posns = new ArrayList<int[]>();
846                int[] pos = iter.getPos();
847
848                {
849                        while (iter.hasNext()) {
850                                if (data[iter.index] == value) {
851                                        posns.add(pos.clone());
852                                }
853                        }
854                }
855                return posns;
856        }
857
858        @Override
859        public int[] maxPos(boolean... ignoreInvalids) {
860                StatisticsMetadata<Number> md = getStats(); // BOOLEAN_USE
861                // StatisticsMetadata<String> md = getStringStats(); // OBJECT_USE
862                List<int[]> max = md.getMaximumPositions(ignoreInvalids);
863
864                if (max == null) {
865                        max = findPositions(md.getMaximum(ignoreInvalids).intValue() != 0); // BOOLEAN_USE
866                        // max = findPositions(md.getMaximum(ignoreInvalids).toString()); // OBJECT_USE
867
868                        md.setMaximumPositions(max);
869                }
870
871                return max.get(0); // first maximum
872        }
873
874        @Override
875        public int[] minPos(boolean... ignoreInvalids) {
876                StatisticsMetadata<Number> md = getStats(); // BOOLEAN_USE
877                // StatisticsMetadata<String> md = getStringStats(); // OBJECT_USE
878                List<int[]> min = md.getMinimumPositions(ignoreInvalids);
879
880                if (min == null) {
881                        min = findPositions(md.getMinimum(ignoreInvalids).intValue() != 0); // BOOLEAN_USE
882                        // min = findPositions(md.getMinimum(ignoreInvalids).toString()); // OBJECT_USE
883
884                        md.setMinimumPositions(min);
885                }
886
887                return min.get(0); // first minimum
888        }
889
890        @Override
891        public boolean containsNans() {
892                return false;
893        }
894
895        @Override
896        public boolean containsInfs() {
897                return false;
898        }
899
900        @Override
901        public boolean containsInvalidNumbers() {
902                return false;
903        }
904
905        @Override
906        public BooleanDatasetBase iadd(final Object b) {
907                return this;
908        }
909
910        @Override
911        public BooleanDatasetBase isubtract(final Object b) {
912                return this;
913        }
914
915        @Override
916        public BooleanDatasetBase imultiply(final Object b) {
917                return this;
918        }
919
920        @Override
921        public BooleanDatasetBase idivide(final Object b) {
922                return this;
923        }
924
925        @Override
926        public BooleanDatasetBase ifloor() {
927                return this;
928        }
929
930        @Override
931        public BooleanDatasetBase iremainder(final Object b) {
932                return this;
933        }
934
935        @Override
936        public BooleanDatasetBase ipower(final Object b) {
937                return this;
938        }
939
940        @Override
941        public double residual(final Object b, final Dataset w, boolean ignoreNaNs) {
942                double sum = 0;
943                return sum;
944        }
945}