/**
* Deletes the specified table with all its columns. ATTENTION: Invoking this method will delete
* the table if it exists and therefore causes data loss.
*/
@Override
public void clearStorage() throws StorageException {
HBaseAdmin adm = getAdminInterface();
try { // first of all, check if table exists, if not - we are done
if (!adm.tableExists(tableName)) {
logger.debug("clearStorage() called before table {} was created, skipping.", tableName);
return;
}
} catch (IOException e) {
throw new TemporaryStorageException(e);
}
HTable table = null;
try {
table = new HTable(hconf, tableName);
Scan scan = new Scan();
scan.setBatch(100);
scan.setCacheBlocks(false);
scan.setCaching(2000);
ResultScanner scanner = null;
try {
scanner = table.getScanner(scan);
for (Result res : scanner) {
table.delete(new Delete(res.getRow()));
}
} finally {
IOUtils.closeQuietly(scanner);
}
} catch (IOException e) {
throw new TemporaryStorageException(e);
} finally {
IOUtils.closeQuietly(table);
}
}
@Override
public QueryResult<Variant> getAllVariantsByRegionAndStudy(
Region region, String sourceId, QueryOptions options) {
Long start, end, dbstart, dbend;
start = System.currentTimeMillis();
QueryResult<Variant> queryResult =
new QueryResult<>(
String.format("%s:%d-%d", region.getChromosome(), region.getStart(), region.getEnd()));
List<Variant> results = new LinkedList<>();
boolean includeSamples;
boolean includeStats;
boolean includeEffects;
if (!options.containsKey("samples")
&& !options.containsKey("stats")
&& !options.containsKey("effects")) {
includeSamples = true;
includeStats = true;
includeEffects = true;
} else {
includeSamples = options.containsKey("samples") && options.getBoolean("samples");
includeStats = options.containsKey("stats") && options.getBoolean("stats");
includeEffects = options.containsKey("effects") && options.getBoolean("effects");
}
try {
String startRow = buildRowkey(region.getChromosome(), Long.toString(region.getStart()));
String stopRow = buildRowkey(region.getChromosome(), Long.toString(region.getEnd()));
HTable table = new HTable(admin.getConfiguration(), tableName);
dbstart = System.currentTimeMillis();
Scan regionScan = new Scan(startRow.getBytes(), stopRow.getBytes());
ResultScanner scanres = table.getScanner(regionScan);
dbend = System.currentTimeMillis();
queryResult.setDbTime(dbend - dbstart);
// Iterate over results and, optionally, their samples and statistics
for (Result result : scanres) {
String[] rowkeyParts = new String(result.getRow(), CHARSET_UTF_8).split("_");
String chromosome = rowkeyParts[0].replaceFirst("^0+(?!$)", "");
int position = Integer.parseInt(rowkeyParts[1]);
// Get basic result fields from Protocol Buffers message
NavigableMap<byte[], byte[]> infoMap = result.getFamilyMap("i".getBytes());
byte[] byteInfo = infoMap.get((sourceId + "_data").getBytes());
VariantFieldsProtos.VariantInfo protoInfo =
VariantFieldsProtos.VariantInfo.parseFrom(byteInfo);
String reference = protoInfo.getReference();
String alternate = StringUtils.join(protoInfo.getAlternateList(), ",");
String format = StringUtils.join(protoInfo.getFormatList(), ":");
Variant variant = new Variant(chromosome, position, position, reference, alternate);
// Set samples if requested
if (includeSamples) {
NavigableMap<byte[], byte[]> sampleMap = result.getFamilyMap("d".getBytes());
Map<String, Map<String, String>> resultSampleMap = new HashMap<>();
// Set samples
for (byte[] s : sampleMap.keySet()) {
String sampleName = (new String(s, CHARSET_UTF_8)).replaceAll(sourceId + "_", "");
VariantFieldsProtos.VariantSample sample =
VariantFieldsProtos.VariantSample.parseFrom(sampleMap.get(s));
String sample1 = sample.getSample();
String[] values = sample1.split(":");
String[] fields = format.split(":");
Map<String, String> singleSampleMap = new HashMap<>();
for (int i = 0; i < fields.length; i++) {
singleSampleMap.put(fields[i], values[i]);
}
// TODO
// variant.addSampleData(sampleName, singleSampleMap);
}
}
// Set stats if requested
if (includeStats) {
byte[] byteStats = infoMap.get((sourceId + "_stats").getBytes());
VariantFieldsProtos.VariantStats protoStats =
VariantFieldsProtos.VariantStats.parseFrom(byteStats);
VariantStats variantStats =
new VariantStats(
chromosome,
position,
reference,
alternate,
protoStats.getMaf(),
protoStats.getMgf(),
protoStats.getMafAllele(),
protoStats.getMgfGenotype(),
protoStats.getMissingAlleles(),
protoStats.getMissingGenotypes(),
protoStats.getMendelianErrors(),
protoStats.getIsIndel(),
protoStats.getCasesPercentDominant(),
protoStats.getControlsPercentDominant(),
protoStats.getCasesPercentRecessive(),
protoStats.getControlsPercentRecessive());
variant.setStats(variantStats);
}
if (includeEffects) {
QueryResult<VariantEffect> queryEffects = getEffectsByVariant(variant, options);
variant.setEffect(queryEffects.getResult());
}
results.add(variant);
}
} catch (IOException e) {
System.err.println(e.getClass().getName() + ": " + e.getMessage());
}
queryResult.setResult(results);
queryResult.setNumResults(results.size());
end = System.currentTimeMillis();
queryResult.setTime(end - start);
return queryResult;
}