protected static Tuple2 tupleFrom(Object... keys) {
if (BINARY_STRINGS) {
try {
for (int i = 0; i < keys.length; i++) {
if (keys[i] instanceof String) {
keys[i] = ((String) keys[i]).getBytes("UTF-8");
}
}
} catch (UnsupportedEncodingException ex) {
throw new AkibanInternalException("Error encoding binary string", ex);
}
}
return Tuple2.from(keys);
}
@Override
protected byte[] encodeValue(MetricLevel<Long> onto) {
return Tuple2.from(changeTime - onto.lastTime, get() - onto.lastValue).pack();
}
@Override
protected byte[] encodeValue(MetricLevel<Boolean> onto) {
return Tuple2.from(combine(changeTime, get()) - combine(onto.lastTime, onto.lastValue))
.pack();
}
@Override
protected byte[] encodeValue() {
// A timestamp and long value are stored as successive integers.
return Tuple2.from(changeTime, get()).pack();
}
@Override
protected byte[] encodeValue() {
return Tuple2.from(combine(changeTime, get())).pack();
}