uk.gov.gchq.gaffer.serialisation.implementation.BooleanSerialiser Maven / Gradle / Ivy

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/*
 * Copyright 2016-2020 Crown Copyright
 *
 * 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 uk.gov.gchq.gaffer.serialisation.implementation;

import uk.gov.gchq.gaffer.exception.SerialisationException;
import uk.gov.gchq.gaffer.serialisation.ToBytesSerialiser;

/**
 * This class is used to serialise and deserialise a boolean value
 */
public class BooleanSerialiser implements ToBytesSerialiser {

    private static final long serialVersionUID = -3964992157560886710L;
    private static final byte FALSE = (byte) 0;
    private static final byte TRUE = (byte) 1;

    @Override
    public byte[] serialise(final Boolean value) throws SerialisationException {
        return new byte[]{Boolean.TRUE.equals(value) ? TRUE : FALSE};
    }

    @Override
    public Boolean deserialise(final byte[] bytes) throws SerialisationException {
        return deserialise(bytes, 0, bytes.length);
    }

    @Override
    public Boolean deserialise(final byte[] allBytes, final int offset, final int length) throws SerialisationException {
        return length == 1 && TRUE == allBytes[offset];
    }

    @Override
    public Boolean deserialiseEmpty() {
        return Boolean.FALSE;
    }

    public  T deserialise(final byte[] bytes, final Class clazz) throws SerialisationException {
        return clazz.cast(bytes.length == 1 && TRUE == bytes[0]);
    }

    @Override
    public boolean canHandle(final Class clazz) {
        return Boolean.class.isAssignableFrom(clazz);
    }

    @Override
    public boolean preservesObjectOrdering() {
        return true;
    }

    @Override
    public boolean isConsistent() {
        return true;
    }

    @Override
    public boolean equals(final Object obj) {
        return this == obj || obj != null && this.getClass() == obj.getClass();
    }

    @Override
    public int hashCode() {
        return BooleanSerialiser.class.getName().hashCode();
    }
}