io.nem.catapult.builders.HashLockTransactionBodyBuilder Maven / Gradle / Ivy

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/**
*** Copyright (c) 2016-present,
*** Jaguar0625, gimre, BloodyRookie, Tech Bureau, Corp. All rights reserved.
***
*** This file is part of Catapult.
***
*** Catapult is free software: you can redistribute it and/or modify
*** it under the terms of the GNU Lesser General Public License as published by
*** the Free Software Foundation, either version 3 of the License, or
*** (at your option) any later version.
***
*** Catapult 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 Lesser General Public License for more details.
***
*** You should have received a copy of the GNU Lesser General Public License
*** along with Catapult. If not, see .
**/

package io.nem.symbol.catapult.builders;

import java.io.DataInputStream;

/** Binary layout for a hash lock transaction. */
public final class HashLockTransactionBodyBuilder implements Serializer {
    /** Lock mosaic. */
    private final UnresolvedMosaicBuilder mosaic;
    /** Number of blocks for which a lock should be valid. */
    private final BlockDurationDto duration;
    /** Lock hash. */
    private final Hash256Dto hash;

    /**
     * Constructor - Creates an object from stream.
     *
     * @param stream Byte stream to use to serialize the object.
     */
    protected HashLockTransactionBodyBuilder(final DataInputStream stream) {
        this.mosaic = UnresolvedMosaicBuilder.loadFromBinary(stream);
        this.duration = BlockDurationDto.loadFromBinary(stream);
        this.hash = Hash256Dto.loadFromBinary(stream);
    }

    /**
     * Constructor.
     *
     * @param mosaic Lock mosaic.
     * @param duration Number of blocks for which a lock should be valid.
     * @param hash Lock hash.
     */
    protected HashLockTransactionBodyBuilder(final UnresolvedMosaicBuilder mosaic, final BlockDurationDto duration, final Hash256Dto hash) {
        GeneratorUtils.notNull(mosaic, "mosaic is null");
        GeneratorUtils.notNull(duration, "duration is null");
        GeneratorUtils.notNull(hash, "hash is null");
        this.mosaic = mosaic;
        this.duration = duration;
        this.hash = hash;
    }

    /**
     * Creates an instance of HashLockTransactionBodyBuilder.
     *
     * @param mosaic Lock mosaic.
     * @param duration Number of blocks for which a lock should be valid.
     * @param hash Lock hash.
     * @return Instance of HashLockTransactionBodyBuilder.
     */
    public static HashLockTransactionBodyBuilder create(final UnresolvedMosaicBuilder mosaic, final BlockDurationDto duration, final Hash256Dto hash) {
        return new HashLockTransactionBodyBuilder(mosaic, duration, hash);
    }

    /**
     * Gets lock mosaic.
     *
     * @return Lock mosaic.
     */
    public UnresolvedMosaicBuilder getMosaic() {
        return this.mosaic;
    }

    /**
     * Gets number of blocks for which a lock should be valid.
     *
     * @return Number of blocks for which a lock should be valid.
     */
    public BlockDurationDto getDuration() {
        return this.duration;
    }

    /**
     * Gets lock hash.
     *
     * @return Lock hash.
     */
    public Hash256Dto getHash() {
        return this.hash;
    }

    /**
     * Gets the size of the object.
     *
     * @return Size in bytes.
     */
    public int getSize() {
        int size = 0;
        size += this.mosaic.getSize();
        size += this.duration.getSize();
        size += this.hash.getSize();
        return size;
    }

    /**
     * Creates an instance of HashLockTransactionBodyBuilder from a stream.
     *
     * @param stream Byte stream to use to serialize the object.
     * @return Instance of HashLockTransactionBodyBuilder.
     */
    public static HashLockTransactionBodyBuilder loadFromBinary(final DataInputStream stream) {
        return new HashLockTransactionBodyBuilder(stream);
    }

    /**
     * Serializes an object to bytes.
     *
     * @return Serialized bytes.
     */
    public byte[] serialize() {
        return GeneratorUtils.serialize(dataOutputStream -> {
            final byte[] mosaicBytes = this.mosaic.serialize();
            dataOutputStream.write(mosaicBytes, 0, mosaicBytes.length);
            final byte[] durationBytes = this.duration.serialize();
            dataOutputStream.write(durationBytes, 0, durationBytes.length);
            final byte[] hashBytes = this.hash.serialize();
            dataOutputStream.write(hashBytes, 0, hashBytes.length);
        });
    }
}