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Fixes for missing key values that can create null pointer exceptions when reading from 3.3-generated variant contexts. Also, chop missing genotype fields correctly from right to left 

git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@3706 348d0f76-0448-11de-a6fe-93d51630548a
This commit is contained in:
delangel 2010-07-01 20:17:03 +00:00
parent 87470d5fe5
commit 61c07c6f90
1 changed files with 46 additions and 10 deletions
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56
java/src/org/broadinstitute/sting/utils/genotype/vcf/VCFWriter.java
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@ -176,6 +176,9 @@ public class VCFWriter {
if ( mHeader == null )
throw new IllegalStateException("The VCF Header must be written before records can be added");
if (!writingVCF40Format)
throw new IllegalStateException("VCFWriter can only support add() method with a variant context if writing VCF4.0. Use VCFWriter(output, true) when constructing object");
String vcfString = toStringEncoding(vc, mHeader, refBases);
try {
mWriter.write(vcfString + "\n");
@ -357,11 +360,16 @@ public class VCFWriter {
continue;
Object val = g.getAttribute(key);
Object val;
if (g.hasAttribute(key))
val = g.getAttribute(key);
else
val = new String(MISSING_GENOTYPE_FIELD);
// some exceptions
if ( key.equals(VCFGenotypeRecord.GENOTYPE_QUALITY_KEY) ) {
if ( MathUtils.compareDoubles(g.getNegLog10PError(), Genotype.NO_NEG_LOG_10PERROR) == 0 )
val = VCFGenotypeRecord.MISSING_GENOTYPE_QUALITY;
val = MISSING_GENOTYPE_FIELD;
else {
// TODO - check whether we need to saturate quality to 99 as in VCF3.3 coder. For now allow unbounded values
// val = Math.min(g.getPhredScaledQual(), VCFGenotypeRecord.MAX_QUAL_VALUE);
@ -373,13 +381,9 @@ public class VCFWriter {
if ( pileup != null )
val = pileup.size();
} else if ( key.equals(VCFGenotypeRecord.GENOTYPE_FILTER_KEY) ) {
val = g.isFiltered() ? Utils.join(";", Utils.sorted(g.getFilters())) : PASSES_FILTERS;
// VCF 4.0 key for no filters is "."
val = g.isFiltered() ? Utils.join(";", Utils.sorted(g.getFilters())) : UNFILTERED;
}
// TODO - do I need this?
/*else if (val == null) {
// generic case when there's no value associated with entry:
val = MISSING_GENOTYPE_FIELD;
} */
Object newVal;
@ -486,6 +490,8 @@ public class VCFWriter {
*
* @param builder the string builder
* @param header the header object
* @param genotypeFormatString Genotype formatting string
* @param vcfAltAlleles alternate alleles at this site
*/
private void addGenotypeData(StringBuilder builder, VCFHeader header,
String genotypeFormatString, List<VCFGenotypeEncoding>vcfAltAlleles) {
@ -509,7 +515,21 @@ public class VCFWriter {
tempStr.append(FIELD_SEPARATOR);
if ( gMap.containsKey(genotype) ) {
VCFGenotypeRecord rec = gMap.get(genotype);
tempStr.append(rec.toStringEncoding(vcfAltAlleles, genotypeFormatStrings, true));
String genotypeString = rec.toStringEncoding(vcfAltAlleles, genotypeFormatStrings, true);
// Override default produced genotype string when there are trailing
String[] genotypeStrings = genotypeString.split(":");
int lastUsedPosition = 0;
for (int k=genotypeStrings.length-1; k >=1; k--) {
// see if string represents an empty field. If not, break.
if (!isEmptyField(genotypeStrings[k]) ) {
lastUsedPosition = k;
break;
}
}
// now reconstruct genotypeString from 0 to lastUsedPosition
genotypeString = Utils.join(":",genotypeStrings, 0,lastUsedPosition+1);
tempStr.append(genotypeString);
gMap.remove(genotype);
} else {
tempStr.append(VCFGenotypeRecord.stringEncodingForEmptyGenotype(genotypeFormatStrings, true));
@ -523,6 +543,21 @@ public class VCFWriter {
builder.append(tempStr);
}
boolean isEmptyField(String field) {
// check if given genotype field is empty, ie either ".", or ".,.", or ".,.,.", etc.
String[] fields = field.split(",");
boolean isEmpty = true;
for (int k=0; k < fields.length; k++) {
if (!fields[k].matches(".")) {
isEmpty = false;
break;
}
}
return isEmpty;
}
/**
* create a genotype mapping from a list and their sample names
*
@ -564,7 +599,8 @@ public class VCFWriter {
}
// take care of unbounded encoding
if (numVals == VCFInfoHeaderLine.UNBOUNDED)
// TODO - workaround for "-1" in original INFO header structure
if (numVals == VCFInfoHeaderLine.UNBOUNDED || numVals < 0)
numVals = 1;
}