2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation, either version 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
21 package jalview.datamodel;
23 import java.util.Iterator;
24 import java.util.NoSuchElementException;
25 import java.util.Vector;
27 import jalview.util.MapList;
32 * An iterator that serves the aligned codon positions (with their protein
38 public class AlignedCodonIterator implements Iterator<AlignedCodon>
41 * The gap character used in the aligned sequence
43 private final char gap;
46 * The characters of the aligned sequence e.g. "-cGT-ACgTG-"
48 private final char[] alignedSeq;
51 * Next position (base 0) in the aligned sequence
53 private int alignedColumn = 0;
56 * Count of bases up to and including alignedColumn position
58 private int alignedBases = 0;
61 * [start, end] from ranges (base 1)
63 private Iterator<int[]> fromRanges;
66 * [start, end] to ranges (base 1)
68 private Iterator<int[]> toRanges;
71 * The current [start, end] (base 1) from range
73 private int[] currentFromRange = null;
76 * The current [start, end] (base 1) to range
78 private int[] currentToRange = null;
81 * The next 'from' position (base 1) to process
83 private int fromPosition = 0;
86 * The next 'to' position (base 1) to process
88 private int toPosition = 0;
94 * the aligned sequence characters
97 public AlignedCodonIterator(char[] cs, char gapChar)
101 fromRanges = map.getFromRanges().iterator();
102 toRanges = map.getToRanges().iterator();
103 if (fromRanges.hasNext())
105 currentFromRange = fromRanges.next();
106 fromPosition = currentFromRange[0];
108 if (toRanges.hasNext())
110 currentToRange = toRanges.next();
111 toPosition = currentToRange[0];
116 * Returns true unless we have already traversed the whole mapping.
119 public boolean hasNext()
121 if (fromRanges.hasNext())
125 if (currentFromRange == null || fromPosition >= currentFromRange[1])
133 * Returns the next codon's aligned positions, and translated value.
135 * @throws NoSuchElementException
136 * if hasNext() would have returned false
137 * @throws IncompleteCodonException
138 * if not enough mapped bases are left to make up a codon
141 public AlignedCodon next() throws IncompleteCodonException
145 throw new NoSuchElementException();
148 int[] codon = getNextCodon();
149 int[] alignedCodon = getAlignedCodon(codon);
151 String peptide = getPeptide();
152 return new AlignedCodon(alignedCodon[0], alignedCodon[1],
153 alignedCodon[2], peptide);
157 * Retrieve the translation as the 'mapped to' position in the mapped to
162 private String getPeptide()
164 // TODO should ideally handle toRatio other than 1 as well...
165 // i.e. code like getNextCodon()
166 if (toPosition <= currentToRange[1]) {
167 char pep = Mapping.this.to.getSequence()[toPosition - 1];
169 return String.valueOf(pep);
171 if (!toRanges.hasNext())
173 throw new NoSuchElementException("Ran out of peptide at position "
176 currentToRange = toRanges.next();
177 toPosition = currentToRange[0];
182 * Get the (base 1) dataset positions for the next codon in the mapping.
184 * @throws IncompleteCodonException
185 * if less than 3 remaining bases are mapped
187 private int[] getNextCodon()
189 int[] codon = new int[3];
192 while (codonbase < 3)
194 if (fromPosition <= currentFromRange[1])
197 * Add next position from the current start-end range
199 codon[codonbase++] = fromPosition++;
204 * Move to the next range - if there is one
206 if (!fromRanges.hasNext())
208 throw new IncompleteCodonException();
210 currentFromRange = fromRanges.next();
211 fromPosition = currentFromRange[0];
218 * Get the aligned column positions (base 0) for the given sequence
219 * positions (base 1), by counting ungapped characters in the aligned
225 private int[] getAlignedCodon(int[] codon)
227 int[] aligned = new int[codon.length];
228 for (int i = 0; i < codon.length; i++)
230 aligned[i] = getAlignedColumn(codon[i]);
236 * Get the aligned column position (base 0) for the given sequence position
242 private int getAlignedColumn(int sequencePos)
244 while (alignedBases < sequencePos
245 && alignedColumn < alignedSeq.length)
247 if (alignedSeq[alignedColumn++] != gap)
252 return alignedColumn - 1;
264 * Contains the start-end pairs mapping from the associated sequence to the
265 * sequence in the database coordinate system. It also takes care of step
266 * difference between coordinate systems.
271 * The sequence that map maps the associated sequence to (if any).
275 public Mapping(MapList map)
281 public Mapping(SequenceI to, MapList map)
288 * create a new mapping from
291 * the sequence being mapped
293 * int[] {start,end,start,end} series on associated sequence
295 * int[] {start,end,...} ranges on the reference frame being mapped
298 * step size on associated sequence
300 * step size on mapped frame
302 public Mapping(SequenceI to, int[] exon, int[] is, int i, int j)
304 this(to, new MapList(exon, is, i, j));
308 * create a duplicate (and independent) mapping object with the same reference
309 * to any SequenceI being mapped to.
313 public Mapping(Mapping map2)
315 if (map2 != this && map2 != null)
317 if (map2.map != null)
319 map = new MapList(map2.map);
328 public MapList getMap()
337 public void setMap(MapList map)
343 * Equals that compares both the to references and MapList mappings.
349 public boolean equals(Object o)
351 // TODO should override Object.hashCode() to ensure that equal objects have
353 if (o == null || !(o instanceof Mapping))
357 Mapping other = (Mapping) o;
366 if ((map != null && other.map == null)
367 || (map == null && other.map != null))
371 if ((map == null && other.map == null) || map.equals(other.map))
379 * get the 'initial' position in the associated sequence for a position in the
380 * mapped reference frame
385 public int getPosition(int mpos)
389 int[] mp = map.shiftTo(mpos);
399 * gets boundary in direction of mapping
402 * in mapped reference frame
403 * @return int{start, end} positions in associated sequence (in direction of
406 public int[] getWord(int mpos)
410 return map.getToWord(mpos);
416 * width of mapped unit in associated sequence
419 public int getWidth()
423 return map.getFromRatio();
429 * width of unit in mapped reference frame
433 public int getMappedWidth()
437 return map.getToRatio();
443 * get mapped position in the associated reference frame for position pos in
444 * the associated sequence.
449 public int getMappedPosition(int pos)
453 int[] mp = map.shiftFrom(pos);
462 public int[] getMappedWord(int pos)
466 int[] mp = map.shiftFrom(pos);
470 { mp[0], mp[0] + mp[2] * (map.getToRatio() - 1) };
477 * locates the region of feature f in the associated sequence's reference
481 * @return one or more features corresponding to f
483 public SequenceFeature[] locateFeature(SequenceFeature f)
486 { // f.getBegin()!=f.getEnd()) {
489 int[] frange = map.locateInFrom(f.getBegin(), f.getEnd());
492 // JBPNote - this isprobably not the right thing to doJBPHack
495 SequenceFeature[] vf = new SequenceFeature[frange.length / 2];
496 for (int i = 0, v = 0; i < frange.length; i += 2, v++)
498 vf[v] = new SequenceFeature(f);
499 vf[v].setBegin(frange[i]);
500 vf[v].setEnd(frange[i + 1]);
501 if (frange.length > 2)
503 vf[v].setDescription(f.getDescription() + "\nPart " + (v + 1));
511 int[] word = getWord(f.getBegin());
512 if (word[0] < word[1])
520 word = getWord(f.getEnd());
521 if (word[0] > word[1])
530 // give up and just return the feature.
531 return new SequenceFeature[]
536 * return a series of contigs on the associated sequence corresponding to the
537 * from,to interval on the mapped reference frame
541 * @return int[] { from_i, to_i for i=1 to n contiguous regions in the
542 * associated sequence}
544 public int[] locateRange(int from, int to)
550 from = (map.getToLowest() < from) ? from : map.getToLowest();
551 to = (map.getToHighest() > to) ? to : map.getToHighest();
559 from = (map.getToHighest() > from) ? from : map.getToHighest();
560 to = (map.getToLowest() < to) ? to : map.getToLowest();
566 return map.locateInFrom(from, to);
573 * return a series of mapped contigs mapped from a range on the associated
580 public int[] locateMappedRange(int from, int to)
587 from = (map.getFromLowest() < from) ? from : map.getFromLowest();
588 to = (map.getFromHighest() > to) ? to : map.getFromHighest();
596 from = (map.getFromHighest() > from) ? from : map.getFromHighest();
597 to = (map.getFromLowest() < to) ? to : map.getFromLowest();
603 return map.locateInTo(from, to);
610 * return a new mapping object with a maplist modifed to only map the visible
611 * regions defined by viscontigs.
616 public Mapping intersectVisContigs(int[] viscontigs)
618 Mapping copy = new Mapping(this);
623 Vector toRange = new Vector();
624 Vector fromRange = new Vector();
625 for (int vc = 0; vc < viscontigs.length; vc += 2)
627 // find a mapped range in this visible region
628 int[] mpr = locateMappedRange(1 + viscontigs[vc],
629 viscontigs[vc + 1] - 1);
632 for (int m = 0; m < mpr.length; m += 2)
634 toRange.addElement(new int[]
635 { mpr[m], mpr[m + 1] });
636 int[] xpos = locateRange(mpr[m], mpr[m + 1]);
637 for (int x = 0; x < xpos.length; x += 2)
639 fromRange.addElement(new int[]
640 { xpos[x], xpos[x + 1] });
645 int[] from = new int[fromRange.size() * 2];
646 int[] to = new int[toRange.size() * 2];
648 for (int f = 0, fSize = fromRange.size(); f < fSize; f++)
650 r = (int[]) fromRange.elementAt(f);
652 from[f * 2 + 1] = r[1];
654 for (int f = 0, fSize = toRange.size(); f < fSize; f++)
656 r = (int[]) toRange.elementAt(f);
658 to[f * 2 + 1] = r[1];
660 copy.setMap(new MapList(from, to, map.getFromRatio(), map
667 * get the sequence being mapped to - if any
669 * @return null or a dataset sequence
671 public SequenceI getTo()
677 * set the dataset sequence being mapped to if any
681 public void setTo(SequenceI tto)
689 * @see java.lang.Object#finalize()
691 protected void finalize() throws Throwable
698 public Iterator<AlignedCodon> getCodonIterator(SequenceI seq, char gapChar)
700 return new AlignedCodonIterator(seq.getSequence(), gapChar);