com.torodb.backend.converters.json.BinaryValueToJsonConverter.java Source code

Introduction

Here is the source code for com.torodb.backend.converters.json.BinaryValueToJsonConverter.java

Source

/*
 * ToroDB
 * Copyright  2014 8Kdata Technology (www.8kdata.com)
 *
 * 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.torodb.backend.converters.json;

import com.google.common.io.ByteSource;
import com.torodb.backend.converters.ValueConverter;
import com.torodb.common.util.HexUtils;
import com.torodb.kvdocument.values.KvBinary;
import com.torodb.kvdocument.values.KvBinary.KvBinarySubtype;
import com.torodb.kvdocument.values.heap.ByteSourceKvBinary;

/**
 *
 */
public class BinaryValueToJsonConverter implements ValueConverter<String, KvBinary> {

    private static final long serialVersionUID = 1L;

    @Override
    public Class<? extends String> getJsonClass() {
        return String.class;
    }

    @Override
    public Class<? extends KvBinary> getValueClass() {
        return KvBinary.class;
    }

    @Override
    public KvBinary toValue(String value) {
        if (!value.startsWith("\\x")) {
            throw new RuntimeException("A bytea in escape format was expected, but " + value + " was found");
        }
        return new ByteSourceKvBinary(KvBinarySubtype.MONGO_GENERIC, (byte) 0,
                ByteSource.wrap(HexUtils.hex2Bytes(value.substring(2))));
    }
}