EnumConverter.java

/*
 * Copyright (c) 2012-2014 Savoir Technologies, Inc.
 *
 * 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 com.savoirtech.hecate.cql3.convert.enumeration;

import com.datastax.driver.core.DataType;
import com.savoirtech.hecate.cql3.convert.ValueConverter;

public class EnumConverter implements ValueConverter {
//----------------------------------------------------------------------------------------------------------------------
// Fields
//----------------------------------------------------------------------------------------------------------------------

    private final Class<? extends Enum> enumType;

//----------------------------------------------------------------------------------------------------------------------
// Constructors
//----------------------------------------------------------------------------------------------------------------------

    public EnumConverter(Class<? extends Enum> enumType) {
        this.enumType = enumType;
    }

//----------------------------------------------------------------------------------------------------------------------
// ValueConverter Implementation
//----------------------------------------------------------------------------------------------------------------------

    @Override
    public Object fromCassandraValue(Object value) {
        if (value == null) {
            return null;
        }
        return Enum.valueOf(enumType, value.toString());
    }

    @Override
    public DataType getDataType() {
        return DataType.varchar();
    }

    @Override
    public Object toCassandraValue(Object value) {
        if (value == null) {
            return null;
        }
        return value.toString();
    }
}