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.analysis;
23 import jalview.datamodel.AlignedCodonFrame;
24 import jalview.datamodel.Alignment;
25 import jalview.datamodel.AlignmentI;
26 import jalview.datamodel.DBRefEntry;
27 import jalview.datamodel.DBRefSource;
28 import jalview.datamodel.Mapping;
29 import jalview.datamodel.Sequence;
30 import jalview.datamodel.SequenceI;
31 import jalview.util.Comparison;
32 import jalview.util.DBRefUtils;
33 import jalview.ws.SequenceFetcher;
34 import jalview.ws.seqfetcher.ASequenceFetcher;
36 import java.util.ArrayList;
37 import java.util.List;
38 import java.util.Vector;
41 * Functions for cross-referencing sequence databases. user must first specify
42 * if cross-referencing from protein or dna (set dna==true)
50 * Select just the DNA or protein references for a protein or dna sequence
53 * if true, select references from DNA (i.e. Protein databases), else
54 * DNA database references
56 * a set of references to select from
59 public static DBRefEntry[] findXDbRefs(boolean fromDna, DBRefEntry[] refs)
61 return DBRefUtils.selectRefs(refs, fromDna ? DBRefSource.PROTEINDBS
62 : DBRefSource.DNACODINGDBS);
63 // could attempt to find other cross
64 // refs here - ie PDB xrefs
65 // (not dna, not protein seq)
70 * true if seqs are DNA seqs
72 * @return a list of sequence database cross reference source types
74 public static String[] findSequenceXrefTypes(boolean dna, SequenceI[] seqs)
76 return findSequenceXrefTypes(dna, seqs, null);
80 * Indirect references are references from other sequences from the dataset to
81 * any of the direct DBRefEntrys on the given sequences.
84 * true if seqs are DNA seqs
86 * @return a list of sequence database cross reference source types
88 public static String[] findSequenceXrefTypes(boolean dna,
89 SequenceI[] seqs, AlignmentI dataset)
91 String[] dbrefs = null;
92 List<String> refs = new ArrayList<String>();
93 for (int s = 0; s < seqs.length; s++)
97 SequenceI dss = seqs[s];
98 while (dss.getDatasetSequence() != null)
100 dss = dss.getDatasetSequence();
102 DBRefEntry[] rfs = findXDbRefs(dna, dss.getDBRef());
103 for (int r = 0; rfs != null && r < rfs.length; r++)
105 if (!refs.contains(rfs[r].getSource()))
107 refs.add(rfs[r].getSource());
112 // search for references to this sequence's direct references.
113 DBRefEntry[] lrfs = CrossRef
114 .findXDbRefs(!dna, seqs[s].getDBRef());
115 List<SequenceI> rseqs = new ArrayList<SequenceI>();
116 CrossRef.searchDatasetXrefs(seqs[s], !dna, lrfs, dataset, rseqs,
117 null); // don't need to specify codon frame for mapping here
118 for (SequenceI rs : rseqs)
120 DBRefEntry[] xrs = findXDbRefs(dna, rs.getDBRef()); // not used??
121 for (int r = 0; rfs != null && r < rfs.length; r++)
123 if (!refs.contains(rfs[r].getSource()))
125 refs.add(rfs[r].getSource());
134 dbrefs = new String[refs.size()];
135 refs.toArray(dbrefs);
141 * if (dna) { if (rfs[r].hasMap()) { // most likely this is a protein cross
142 * reference if (!refs.contains(rfs[r].getSource())) {
143 * refs.addElement(rfs[r].getSource()); } } }
145 public static boolean hasCdnaMap(SequenceI[] seqs)
147 String[] reftypes = findSequenceXrefTypes(false, seqs);
148 for (int s = 0; s < reftypes.length; s++)
150 if (reftypes.equals(DBRefSource.EMBLCDS))
159 public static SequenceI[] getCdnaMap(SequenceI[] seqs)
161 Vector cseqs = new Vector();
162 for (int s = 0; s < seqs.length; s++)
164 DBRefEntry[] cdna = findXDbRefs(true, seqs[s].getDBRef());
165 for (int c = 0; c < cdna.length; c++)
167 if (cdna[c].getSource().equals(DBRefSource.EMBLCDS))
170 .println("TODO: unimplemented sequence retrieval for coding region sequence.");
171 // TODO: retrieve CDS dataset sequences
172 // need global dataset sequence retriever/resolver to reuse refs
173 // and construct Mapping entry.
174 // insert gaps in CDS according to peptide gaps.
175 // add gapped sequence to cseqs
179 if (cseqs.size() > 0)
181 SequenceI[] rsqs = new SequenceI[cseqs.size()];
182 cseqs.copyInto(rsqs);
195 public static Alignment findXrefSequences(SequenceI[] seqs, boolean dna,
198 return findXrefSequences(seqs, dna, source, null);
207 * alignment to search for product sequences.
208 * @return products (as dataset sequences)
210 public static Alignment findXrefSequences(SequenceI[] seqs, boolean dna,
211 String source, AlignmentI dataset)
213 List<SequenceI> rseqs = new ArrayList<SequenceI>();
214 Alignment ral = null;
215 AlignedCodonFrame cf = new AlignedCodonFrame(); // nominal width
216 for (int s = 0; s < seqs.length; s++)
218 SequenceI dss = seqs[s];
219 while (dss.getDatasetSequence() != null)
221 dss = dss.getDatasetSequence();
223 boolean found = false;
224 DBRefEntry[] xrfs = CrossRef.findXDbRefs(dna, dss.getDBRef());
225 if ((xrfs == null || xrfs.length == 0) && dataset != null)
227 System.out.println("Attempting to find ds Xrefs refs.");
228 DBRefEntry[] lrfs = CrossRef.findXDbRefs(!dna, seqs[s].getDBRef());
229 // less ambiguous would be a 'find primary dbRefEntry' method.
230 // filter for desired source xref here
231 found = CrossRef.searchDatasetXrefs(dss, !dna, lrfs, dataset,
234 for (int r = 0; xrfs != null && r < xrfs.length; r++)
236 if (source != null && !source.equals(xrfs[r].getSource()))
240 if (xrfs[r].hasMap())
242 if (xrfs[r].getMap().getTo() != null)
244 SequenceI rsq = new Sequence(xrfs[r].getMap().getTo());
246 if (xrfs[r].getMap().getMap().getFromRatio() != xrfs[r]
247 .getMap().getMap().getToRatio())
249 // get sense of map correct for adding to product alignment.
252 // map is from dna seq to a protein product
253 cf.addMap(dss, rsq, xrfs[r].getMap().getMap());
257 // map should be from protein seq to its coding dna
258 cf.addMap(rsq, dss, xrfs[r].getMap().getMap().getInverse());
266 // do a bit more work - search for sequences with references matching
267 // xrefs on this sequence.
270 found |= searchDataset(dss, xrfs[r], dataset, rseqs, cf); // ,false,!dna);
273 xrfs[r] = null; // we've recovered seqs for this one.
280 if (xrfs != null && xrfs.length > 0)
282 // Try and get the sequence reference...
284 * Ideal world - we ask for a sequence fetcher implementation here if
285 * (jalview.io.RunTimeEnvironment.getSequenceFetcher()) (
287 ASequenceFetcher sftch = new SequenceFetcher();
288 SequenceI[] retrieved = null;
290 for (int r = 0; r < xrfs.length; r++)
292 // filter out any irrelevant or irretrievable references
294 || ((source != null && !source.equals(xrfs[r]
295 .getSource())) || !sftch.isFetchable(xrfs[r]
305 .println("Attempting to retrieve cross referenced sequences.");
306 DBRefEntry[] t = new DBRefEntry[l];
308 for (int r = 0; r < xrfs.length; r++)
318 retrieved = sftch.getSequences(xrfs); // problem here is we don't
319 // know which of xrfs
322 } catch (Exception e)
325 .println("Problem whilst retrieving cross references for Sequence : "
326 + seqs[s].getName());
329 if (retrieved != null)
331 for (int rs = 0; rs < retrieved.length; rs++)
333 // TODO: examine each sequence for 'redundancy'
334 DBRefEntry[] dbr = retrieved[rs]
336 if (dbr != null && dbr.length > 0)
338 for (int di = 0; di < dbr.length; di++)
340 // find any entry where we should put in the sequence being
341 // cross-referenced into the map
342 Mapping map = dbr[di].getMap();
345 if (map.getTo() != null && map.getMap() != null)
347 // should search the local dataset to find any existing
348 // candidates for To !
351 // compare ms with dss and replace with dss in mapping
352 // if map is congruent
353 SequenceI ms = map.getTo();
354 int sf = map.getMap().getToLowest();
355 int st = map.getMap().getToHighest();
356 SequenceI mappedrg = ms.getSubSequence(sf, st);
357 SequenceI loc = dss.getSubSequence(sf, st);
358 if (mappedrg.getLength() > 0
359 && mappedrg.getSequenceAsString().equals(
360 loc.getSequenceAsString()))
363 .println("Mapping updated for retrieved crossreference");
364 // method to update all refs of existing To on
365 // retrieved sequence with dss and merge any props
369 } catch (Exception e)
372 .println("Exception when consolidating Mapped sequence set...");
373 e.printStackTrace(System.err);
379 retrieved[rs].updatePDBIds();
380 rseqs.add(retrieved[rs]);
387 if (rseqs.size() > 0)
389 SequenceI[] rsqs = new SequenceI[rseqs.size()];
391 ral = new Alignment(rsqs);
392 if (cf != null && cf.getProtMappings() != null)
394 ral.addCodonFrame(cf);
401 * find references to lrfs in the cross-reference set of each sequence in
402 * dataset (that is not equal to sequenceI) Identifies matching DBRefEntry
403 * based on source and accession string only - Map and Version are nulled.
409 * @return true if matches were found.
411 private static boolean searchDatasetXrefs(SequenceI sequenceI,
412 boolean dna, DBRefEntry[] lrfs, AlignmentI dataset,
413 List<SequenceI> rseqs,
414 AlignedCodonFrame cf)
416 boolean found = false;
421 for (int i = 0; i < lrfs.length; i++)
423 DBRefEntry xref = new DBRefEntry(lrfs[i]);
425 xref.setVersion(null);
427 found = searchDataset(sequenceI, xref, dataset, rseqs, cf, false, dna);
433 * search a given sequence dataset for references matching cross-references to
440 * set of unique sequences
442 * @return true if one or more unique sequences were found and added
444 public static boolean searchDataset(SequenceI sequenceI, DBRefEntry xrf,
445 AlignmentI dataset, List<SequenceI> rseqs, AlignedCodonFrame cf)
447 return searchDataset(sequenceI, xrf, dataset, rseqs, cf, true, false);
451 * TODO: generalise to different protein classifications Search dataset for
452 * DBRefEntrys matching the given one (xrf) and add the associated sequence to
460 * - search all references or only subset
462 * search dna or protein xrefs (if direct=false)
463 * @return true if relationship found and sequence added.
465 public static boolean searchDataset(SequenceI sequenceI, DBRefEntry xrf,
466 AlignmentI dataset, List<SequenceI> rseqs, AlignedCodonFrame cf,
467 boolean direct, boolean dna)
469 boolean found = false;
470 SequenceI[] typer = new SequenceI[1];
475 if (dataset.getSequences() == null)
477 System.err.println("Empty dataset sequence set - NO VECTOR");
481 synchronized (ds = dataset.getSequences())
483 for (SequenceI nxt : ds)
487 if (nxt.getDatasetSequence() != null)
490 .println("Implementation warning: getProducts passed a dataset alignment without dataset sequences in it!");
492 if (nxt != sequenceI && nxt != sequenceI.getDatasetSequence())
494 // check if this is the correct sequence type
497 boolean isDna = Comparison.isNucleotide(typer);
498 if ((direct && isDna == dna) || (!direct && isDna != dna))
500 // skip this sequence because it is same molecule type
505 // look for direct or indirect references in common
506 DBRefEntry[] poss = nxt.getDBRef(), cands = null;
509 cands = DBRefUtils.searchRefs(poss, xrf);
513 poss = CrossRef.findXDbRefs(dna, poss); //
514 cands = DBRefUtils.searchRefs(poss, xrf);
518 if (!rseqs.contains(nxt))
521 boolean foundmap = cf != null;
522 // don't search if we aren't given a codon map object
523 for (int r = 0; foundmap && r < cands.length; r++)
525 if (cands[r].hasMap())
527 if (cands[r].getMap().getTo() != null
528 && cands[r].getMap().getMap().getFromRatio() != cands[r]
529 .getMap().getMap().getToRatio())
532 // get sense of map correct for adding to product
536 // map is from dna seq to a protein product
537 cf.addMap(sequenceI, nxt, cands[r].getMap()
542 // map should be from protein seq to its coding dna
543 cf.addMap(nxt, sequenceI, cands[r].getMap()
544 .getMap().getInverse());
549 // TODO: add mapping between sequences if necessary
562 * precalculate different products that can be found for seqs in dataset and
569 * - don't actually build lists - just get types
570 * @return public static Object[] buildXProductsList(boolean dna, SequenceI[]
571 * seqs, AlignmentI dataset, boolean fake) { String types[] =
572 * jalview.analysis.CrossRef.findSequenceXrefTypes( dna, seqs,
573 * dataset); if (types != null) { System.out.println("Xref Types for:
574 * "+(dna ? "dna" : "prot")); for (int t = 0; t < types.length; t++) {
575 * System.out.println("Type: " + types[t]); SequenceI[] prod =
576 * jalview.analysis.CrossRef.findXrefSequences(seqs, dna, types[t]);
577 * System.out.println("Found " + ((prod == null) ? "no" : "" +
578 * prod.length) + " products"); if (prod!=null) { for (int p=0;
579 * p<prod.length; p++) { System.out.println("Prod "+p+":
580 * "+prod[p].getDisplayId(true)); } } } } else {
581 * System.out.println("Trying getProducts for
582 * "+al.getSequenceAt(0).getDisplayId(true));
583 * System.out.println("Search DS Xref for: "+(dna ? "dna" : "prot"));
584 * // have a bash at finding the products amongst all the retrieved
585 * sequences. SequenceI[] prod =
586 * jalview.analysis.CrossRef.findXrefSequences(al
587 * .getSequencesArray(), dna, null, ds); System.out.println("Found " +
588 * ((prod == null) ? "no" : "" + prod.length) + " products"); if
589 * (prod!=null) { // select non-equivalent sequences from dataset list
590 * for (int p=0; p<prod.length; p++) { System.out.println("Prod "+p+":
591 * "+prod[p].getDisplayId(true)); } } } }