@Override
public Datum getPartialResult(FunctionContext ctx) {
AvgContext avgCtx = (AvgContext) ctx;
ArrayDatum part = new ArrayDatum(2);
part.put(0, DatumFactory.createDouble(avgCtx.sum));
part.put(1, DatumFactory.createLong(avgCtx.count));
return part;
}
public void compile(String pattern) {
String regex = pattern.replace("?", ".");
regex = regex.replace("%", ".*");
this.compiled = Pattern.compile(regex, Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
result = DatumFactory.createBool(false);
}
@Override
public Datum read(ByteBuffer buffer) throws IOException {
if (buffer.hasRemaining()) {
return DatumFactory.createInt(buffer.getInt());
} else {
return null;
}
}
@Override
public Datum eval(Tuple params) {
try {
return DatumFactory.createInt8(
new SimpleDateFormat(dateFormat).parse(params.get(0).asChars()).getTime());
} catch (ParseException e) {
LOG.error(e);
return null;
}
}
@Override
public Datum terminate(FunctionContext ctx) {
return DatumFactory.createInt(((MinContext) ctx).min);
}
@Override
public Datum getPartialResult(FunctionContext ctx) {
return DatumFactory.createInt(((MinContext) ctx).min);
}
@Test
public void testTarget() throws CloneNotSupportedException {
QueryBlock.Target t1 = new QueryBlock.Target(new ConstEval(DatumFactory.createInt(5)), 0);
QueryBlock.Target t2 = (QueryBlock.Target) t1.clone();
assertEquals(t1, t2);
}
@Override
public Datum terminate(FunctionContext ctx) {
AvgContext avgCtx = (AvgContext) ctx;
return DatumFactory.createDouble(avgCtx.sum / avgCtx.count);
}