//
// Main
//
int overlapLongMain(int argc, char** argv)
{
parseOverlapLongOptions(argc, argv);
// Open output file
std::ostream* pASQGWriter = createWriter(opt::outFile);
// Build and write the ASQG header
ASQG::HeaderRecord headerRecord;
headerRecord.setOverlapTag(opt::minOverlap);
headerRecord.setErrorRateTag(opt::errorRate);
headerRecord.setInputFileTag(opt::readsFile);
headerRecord.setTransitiveTag(true);
headerRecord.write(*pASQGWriter);
// Determine which index files to use. If a target file was provided,
// use the index of the target reads
std::string indexPrefix;
if(!opt::targetFile.empty())
indexPrefix = stripFilename(opt::targetFile);
else
indexPrefix = stripFilename(opt::readsFile);
BWT* pBWT = new BWT(indexPrefix + BWT_EXT, opt::sampleRate);
SampledSuffixArray* pSSA = new SampledSuffixArray(indexPrefix + SAI_EXT, SSA_FT_SAI);
Timer* pTimer = new Timer(PROGRAM_IDENT);
pBWT->printInfo();
// Read the sequence file and write vertex records for each
// Also store the read names in a vector of strings
ReadTable reads;
SeqReader* pReader = new SeqReader(opt::readsFile, SRF_NO_VALIDATION);
SeqRecord record;
while(pReader->get(record))
{
reads.addRead(record.toSeqItem());
ASQG::VertexRecord vr(record.id, record.seq.toString());
vr.write(*pASQGWriter);
if(reads.getCount() % 100000 == 0)
printf("Read %zu sequences\n", reads.getCount());
}
delete pReader;
pReader = NULL;
BWTIndexSet index;
index.pBWT = pBWT;
index.pSSA = pSSA;
index.pReadTable = &reads;
// Make a prefix for the temporary hits files
size_t n_reads = reads.getCount();
omp_set_num_threads(opt::numThreads);
#pragma omp parallel for
for(size_t read_idx = 0; read_idx < n_reads; ++read_idx)
{
const SeqItem& curr_read = reads.getRead(read_idx);
printf("read %s %zubp\n", curr_read.id.c_str(), curr_read.seq.length());
SequenceOverlapPairVector sopv =
KmerOverlaps::retrieveMatches(curr_read.seq.toString(),
opt::seedLength,
opt::minOverlap,
1 - opt::errorRate,
100,
index);
printf("Found %zu matches\n", sopv.size());
for(size_t i = 0; i < sopv.size(); ++i)
{
std::string match_id = reads.getRead(sopv[i].match_idx).id;
// We only want to output each edge once so skip this overlap
// if the matched read has a lexicographically lower ID
if(curr_read.id > match_id)
continue;
std::string ao = ascii_overlap(sopv[i].sequence[0], sopv[i].sequence[1], sopv[i].overlap, 50);
printf("\t%s\t[%d %d] ID=%s OL=%d PI:%.2lf C=%s\n", ao.c_str(),
sopv[i].overlap.match[0].start,
sopv[i].overlap.match[0].end,
match_id.c_str(),
sopv[i].overlap.getOverlapLength(),
sopv[i].overlap.getPercentIdentity(),
sopv[i].overlap.cigar.c_str());
// Convert to ASQG
SeqCoord sc1(sopv[i].overlap.match[0].start, sopv[i].overlap.match[0].end, sopv[i].overlap.length[0]);
SeqCoord sc2(sopv[i].overlap.match[1].start, sopv[i].overlap.match[1].end, sopv[i].overlap.length[1]);
// KmerOverlaps returns the coordinates of the overlap after flipping the reads
// to ensure the strand matches. The ASQG file wants the coordinate of the original
// sequencing strand. Flip here if necessary
if(sopv[i].is_reversed)
sc2.flip();
// Convert the SequenceOverlap the ASQG's overlap format
Overlap ovr(curr_read.id, sc1, match_id, sc2, sopv[i].is_reversed, -1);
ASQG::EdgeRecord er(ovr);
er.setCigarTag(sopv[i].overlap.cigar);
er.setPercentIdentityTag(sopv[i].overlap.getPercentIdentity());
#pragma omp critical
{
er.write(*pASQGWriter);
}
}
}
// Cleanup
delete pReader;
delete pBWT;
delete pSSA;
delete pASQGWriter;
delete pTimer;
if(opt::numThreads > 1)
pthread_exit(NULL);
return 0;
}
ExecStatus
Weights<View>::propagate(Space& home, const ModEventDelta&) {
ModEvent me = ME_SET_NONE;
if (!x.assigned()) {
// Collect the weights of the elements in the unknown set in an array
int size = elements.size();
Region r(home);
int* currentWeights = r.alloc<int>(size);
UnknownRanges<View> ur(x);
Iter::Ranges::ToValues<UnknownRanges<View> > urv(ur);
for (int i=0; i<size; i++) {
if (!urv() || elements[i]<urv.val()) {
currentWeights[i] = 0;
} else {
assert(elements[i] == urv.val());
currentWeights[i] = weights[i];
++urv;
}
}
// Sort the weights of the unknown elements
IntLess il;
Support::quicksort<int>(currentWeights, size, il);
// The maximum number of elements that can still be added to x
int delta = static_cast<int>(std::min(x.unknownSize(), x.cardMax() - x.glbSize()));
// The weight of the elements already in x
GlbRanges<View> glb(x);
int glbWeight = weightI<GlbRanges<View> >(elements, weights, glb);
// Compute the weight of the current lower bound of x, plus at most
// delta-1 further elements with smallest negative weights. This weight
// determines which elements in the upper bound cannot possibly be
// added to x (those whose weight would exceed the capacity even if
// all other elements are minimal)
int lowWeight = glbWeight;
for (int i=0; i<delta-1; i++) {
if (currentWeights[i] >= 0)
break;
lowWeight+=currentWeights[i];
}
// Compute the lowest possible weight of x. If there is another element
// with negative weight left, then add its weight to lowWeight.
// Otherwise lowWeight is already the lowest possible weight.
int lowestWeight = lowWeight;
if (delta>0 && currentWeights[delta-1]<0)
lowestWeight+=currentWeights[delta-1];
// If after including the minimal number of required elements,
// no more element with negative weight is available, then
// a tighter lower bound can be computed.
if ( (x.cardMin() - x.glbSize() > 0 &&
currentWeights[x.cardMin() - x.glbSize() - 1] >= 0) ||
currentWeights[0] >= 0 ) {
int lowestPosWeight = glbWeight;
for (unsigned int i=0; i<x.cardMin() - x.glbSize(); i++) {
lowestPosWeight += currentWeights[i];
}
lowestWeight = std::max(lowestWeight, lowestPosWeight);
}
// Compute the highest possible weight of x as the weight of the lower
// bound plus the weight of the delta heaviest elements still in the
// upper bound.
int highestWeight = glbWeight;
for (int i=0; i<delta; i++) {
if (currentWeights[size-i-1]<=0)
break;
highestWeight += currentWeights[size-i-1];
}
// Prune the weight using the computed bounds
GECODE_ME_CHECK(y.gq(home, lowestWeight));
GECODE_ME_CHECK(y.lq(home, highestWeight));
// Exclude all elements that are too heavy from the set x.
// Elements are too heavy if their weight alone already
// exceeds the remaining capacity
int remainingCapacity = y.max()-lowWeight;
UnknownRanges<View> ur2(x);
Iter::Ranges::ToValues<UnknownRanges<View> > urv2(ur2);
OverweightValues<Iter::Ranges::ToValues<UnknownRanges<View> > >
ov(remainingCapacity, elements, weights, urv2);
Iter::Values::ToRanges<OverweightValues<
Iter::Ranges::ToValues<UnknownRanges<View> > > > ovr(ov);
me = x.excludeI(home, ovr);
GECODE_ME_CHECK(me);
}
if (x.assigned()) {
// If x is assigned, just compute its weight and assign y.
GlbRanges<View> glb(x);
int w =
weightI<GlbRanges<View> >(elements, weights, glb);
GECODE_ME_CHECK(y.eq(home, w));
return home.ES_SUBSUMED(*this);
}
return me_modified(me) ? ES_NOFIX : ES_FIX;
}
