
net.openhft.chronicle.hash.serialization.impl.LongDataAccess Maven / Gradle / Ivy
/*
* Copyright 2012-2018 Chronicle Map Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.openhft.chronicle.hash.serialization.impl;
import net.openhft.chronicle.algo.hashing.LongHashFunction;
import net.openhft.chronicle.bytes.BytesStore;
import net.openhft.chronicle.bytes.RandomDataInput;
import net.openhft.chronicle.bytes.RandomDataOutput;
import net.openhft.chronicle.hash.AbstractData;
import net.openhft.chronicle.hash.Data;
import net.openhft.chronicle.hash.serialization.DataAccess;
import net.openhft.chronicle.wire.WireIn;
import net.openhft.chronicle.wire.WireOut;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public final class LongDataAccess extends AbstractData
implements DataAccess, Data {
// Cache fields
private transient boolean bsInit;
private transient BytesStore bs;
/**
* State field
*/
private transient Long instance;
public LongDataAccess() {
initTransients();
}
private void initTransients() {
bs = BytesStore.wrap(new byte[8]);
}
@Override
public RandomDataInput bytes() {
if (!bsInit) {
bs.writeLong(0, instance);
bsInit = true;
}
return bs;
}
@Override
public long offset() {
return 0;
}
@Override
public long size() {
return 8;
}
@Override
public Long get() {
return instance;
}
@Override
public Long getUsing(@Nullable Long using) {
return instance;
}
@Override
public long hash(LongHashFunction f) {
return f.hashLong(instance);
}
@Override
public boolean equivalent(RandomDataInput source, long sourceOffset) {
return source.readLong(sourceOffset) == instance;
}
@Override
public void writeTo(RandomDataOutput target, long targetOffset) {
target.writeLong(targetOffset, instance);
}
@Override
public Data getData(@NotNull Long instance) {
this.instance = instance;
bsInit = false;
return this;
}
@Override
public void uninit() {
instance = null;
}
@Override
public void readMarshallable(@NotNull WireIn wireIn) {
// no config fields to read
initTransients();
}
@Override
public void writeMarshallable(@NotNull WireOut wireOut) {
// no config fields to write
}
@Override
public DataAccess copy() {
return new LongDataAccess();
}
}
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