X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=blastdb.cpp;h=396a6b4b91c4496b80dfc3009cdda4a0f34b12e6;hb=2397df97b12cd5d21ea10dc4248c18a5803ddd41;hp=e442fa229b49e08d5c7b80495d3c8a10d75d9430;hpb=02909d6cae9963ba00dc746969a370fa8ca934fc;p=mothur.git diff --git a/blastdb.cpp b/blastdb.cpp index e442fa2..396a6b4 100644 --- a/blastdb.cpp +++ b/blastdb.cpp @@ -14,90 +14,173 @@ /**************************************************************************************************/ -BlastDB::BlastDB(string fastaFileName, float gO, float gE, float m, float mM) : Database(fastaFileName), +BlastDB::BlastDB(float gO, float gE, float m, float mM) : Database(), gapOpen(gO), gapExtend(gE), match(m), misMatch(mM) { globaldata = GlobalData::getInstance(); - - cout << "Generating the temporary BLAST database...\t"; cout.flush(); + count = 0; int randNumber = rand(); dbFileName = toString(randNumber) + ".template.unaligned.fasta"; queryFileName = toString(randNumber) + ".candidate.unaligned.fasta"; blastFileName = toString(randNumber) + ".blast"; - - ofstream unalignedFastaFile; - openOutputFile(dbFileName, unalignedFastaFile); - - for(int i=0;i' << i << endl; // sequences, which will be input to formatdb - unalignedFastaFile << templateSequences[i].getUnaligned() << endl; - } - unalignedFastaFile.close(); - - path = globaldata->argv; - path = path.substr(0, (path.find_last_of('m'))); - - string formatdbCommand = path + "blast/bin/formatdb -p F -o T -i " + dbFileName; // format the database, -o option gives us the ability - system(formatdbCommand.c_str()); // to get the right sequence names, i think. -p F - // option tells formatdb that seqs are DNA, not prot - cout << "DONE." << endl << endl; cout.flush(); - emptySequence = Sequence(); - emptySequence.setName("no_match"); - emptySequence.setUnaligned("XXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); - emptySequence.setAligned("XXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); - - } /**************************************************************************************************/ BlastDB::~BlastDB(){ - //for (int i = 0; i < templateSequences.size(); i++) { delete templateSequences[i]; } - //templateSequences.clear(); - //delete emptySequence; - remove(queryFileName.c_str()); // let's clean stuff up and remove the temp files remove(dbFileName.c_str()); // let's clean stuff up and remove the temp files remove(blastFileName.c_str()); // let's clean stuff up and remove the temp files } - /**************************************************************************************************/ +//assumes you have added all the template sequences using the addSequence function and run generateDB. +vector BlastDB::findClosestSequences(Sequence* seq, int n) { + try{ + vector topMatches; + + ofstream queryFile; + openOutputFile(queryFileName, queryFile); + queryFile << '>' << seq->getName() << endl; + queryFile << seq->getUnaligned() << endl; + queryFile.close(); + + // the goal here is to quickly survey the database to find the closest match. To do this we are using the default + // wordsize used in megablast. I'm sure we're sacrificing accuracy for speed, but anyother way would take way too + // long. With this setting, it seems comparable in speed to the suffix tree approach. + + string blastCommand = path + "blast/bin/blastall -p blastn -d " + dbFileName + " -m 8 -W 28 -v " + toString(n) + " -b " + toString(n);; + blastCommand += (" -i " + queryFileName + " -o " + blastFileName); + system(blastCommand.c_str()); + + ifstream m8FileHandle; + openInputFile(blastFileName, m8FileHandle); + + string dummy; + int templateAccession; + gobble(m8FileHandle); + + while(!m8FileHandle.eof()){ + m8FileHandle >> dummy >> templateAccession >> searchScore; + + //get rest of junk in line + while (!m8FileHandle.eof()) { char c = m8FileHandle.get(); if (c == 10 || c == 13){ break; } } + + gobble(m8FileHandle); + topMatches.push_back(templateAccession); + } + m8FileHandle.close(); + + string root = dbFileName; + string temp = dbFileName + ".nsq"; + remove(temp.c_str()); + temp = dbFileName + ".nsi"; + remove(temp.c_str()); + + temp = dbFileName + ".nsd"; + remove(temp.c_str()); + + temp = dbFileName + ".nin"; + remove(temp.c_str()); + + temp = dbFileName + ".nhr"; + remove(temp.c_str()); + -Sequence BlastDB::findClosestSequence(Sequence* candidate){ + + return topMatches; + } + catch(exception& e) { + errorOut(e, "BlastDB", "findClosestSequences"); + exit(1); + } - ofstream queryFile; - openOutputFile(queryFileName, queryFile); - queryFile << '>' << candidate->getName() << endl; - queryFile << candidate->getUnaligned() << endl; - queryFile.close(); +} +/**************************************************************************************************/ +//assumes you have added all the template sequences using the addSequence function and run generateDB. +vector BlastDB::findClosestMegaBlast(Sequence* seq, int n) { + try{ + vector topMatches; + + ofstream queryFile; + openOutputFile(queryFileName, queryFile); + queryFile << '>' << seq->getName() << endl; + queryFile << seq->getUnaligned() << endl; + queryFile.close(); + + // the goal here is to quickly survey the database to find the closest match. To do this we are using the default + // wordsize used in megablast. I'm sure we're sacrificing accuracy for speed, but anyother way would take way too + // long. With this setting, it seems comparable in speed to the suffix tree approach. + string blastCommand = path + "blast/bin/megablast -e 1e-10 -d " + dbFileName + " -m 8 -b " + toString(n) + " -v " + toString(n); //-W 28 -p blastn + blastCommand += (" -i " + queryFileName + " -o " + blastFileName); + system(blastCommand.c_str()); + + ifstream m8FileHandle; + openInputFile(blastFileName, m8FileHandle, "no error"); -// the goal here is to quickly survey the database to find the closest match. To do this we are using the default -// wordsize used in megablast. I'm sure we're sacrificing accuracy for speed, but anyother way would take way too -// long. With this setting, it seems comparable in speed to the suffix tree approach. - - string blastCommand = path + "blast/bin/blastall -p blastn -d " + dbFileName + " -b 1 -m 8 -W 28"; - blastCommand += (" -i " + queryFileName + " -o " + blastFileName); - system(blastCommand.c_str()); + string dummy; + int templateAccession; + gobble(m8FileHandle); + + while(!m8FileHandle.eof()){ + m8FileHandle >> dummy >> templateAccession >> searchScore; + + //get rest of junk in line + while (!m8FileHandle.eof()) { char c = m8FileHandle.get(); if (c == 10 || c == 13){ break; } } + + gobble(m8FileHandle); + topMatches.push_back(templateAccession); +//cout << templateAccession << endl; + } + m8FileHandle.close(); +//cout << "\n\n" ; + return topMatches; + } + catch(exception& e) { + errorOut(e, "BlastDB", "findClosest"); + exit(1); + } +} +/**************************************************************************************************/ +void BlastDB::addSequence(Sequence seq) { + try { - ifstream m8FileHandle; - openInputFile(blastFileName, m8FileHandle); + ofstream unalignedFastaFile; + openOutputFileAppend(dbFileName, unalignedFastaFile); - string dummy; - int templateAccession; - gobble(m8FileHandle); - if(!m8FileHandle.eof()){ - m8FileHandle >> dummy >> templateAccession >> searchScore; - m8FileHandle.close(); - return templateSequences[templateAccession]; + // generating a fasta file with unaligned template + unalignedFastaFile << '>' << count << endl; // sequences, which will be input to formatdb + unalignedFastaFile << seq.getUnaligned() << endl; + unalignedFastaFile.close(); + + count++; } - else{ - searchScore = 0.00; - return emptySequence; + catch(exception& e) { + errorOut(e, "BlastDB", "addSequence"); + exit(1); + } +} +/**************************************************************************************************/ +void BlastDB::generateDB() { + try { + + //mothurOut("Generating the temporary BLAST database...\t"); cout.flush(); + + path = globaldata->argv; + path = path.substr(0, (path.find_last_of('m'))); + + string formatdbCommand = path + "blast/bin/formatdb -p F -o T -i " + dbFileName; // format the database, -o option gives us the ability + system(formatdbCommand.c_str()); // to get the right sequence names, i think. -p F + // option tells formatdb that seqs are DNA, not prot + //mothurOut("DONE."); mothurOutEndLine(); mothurOutEndLine(); cout.flush(); + } + catch(exception& e) { + errorOut(e, "BlastDB", "generateDB"); + exit(1); } - m8FileHandle.close(); } /**************************************************************************************************/ +