/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.server.types.mcompat.aggr;
import com.foundationdb.server.types.TAggregator;
import com.foundationdb.server.types.TFixedTypeAggregator;
import com.foundationdb.server.types.TInstance;
import com.foundationdb.server.types.mcompat.mtypes.MNumeric;
import com.foundationdb.server.types.value.Value;
import com.foundationdb.server.types.value.ValueSource;
import com.foundationdb.server.types.value.ValueTarget;
public abstract class MBit extends TFixedTypeAggregator {
public static final TAggregator[] INSTANCES = {
// BIT_AND
new MBit("BIT_AND") {
@Override
long process(long i0, long i1) {
return i0 & i1;
}
},
// BIT_OR
new MBit("BIT_OR") {
@Override
long process(long i0, long i1) {
return i0 | i1;
}
},
// BIT_XOR
new MBit("BIT_XOR") {
@Override
long process(long i0, long i1) {
return i0 ^ i1;
}
}
};
abstract long process(long i0, long i1);
@Override
public void input(TInstance type, ValueSource source, TInstance stateType, Value state, Object o) {
if (!source.isNull()) {
long incoming = source.getInt64();
if (!state.hasAnyValue()) {
state.putInt64(incoming);
}
else {
long previousState = state.getInt64();
state.putInt64(process(previousState, incoming));
}
}
}
@Override
public void emptyValue(ValueTarget state) {
state.putNull();
}
private MBit(String name) {
super(name, MNumeric.BIGINT);
}
}