protocols/ovsdb/rfc/src/main/java/org/onosproject/ovsdb/rfc/utils/MutationUtil.java

/*
 * Copyright 2015 Open Networking Laboratory
 *
 * 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 org.onosproject.ovsdb.rfc.utils;

import org.onosproject.ovsdb.rfc.notation.Mutation;
import org.onosproject.ovsdb.rfc.notation.Mutation.Mutator;

public final class MutationUtil {

    /**
     * Constructs a MutationUtil object. Utility classes should not have a
     * public or default constructor, otherwise IDE will compile unsuccessfully. This
     * class should not be instantiated.
     */
    private MutationUtil() {
    }

    /**
     * Returns a Mutation that means += .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation sum(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.SUM, value);
    }

    /**
     * Returns a Mutation that means -= .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation difference(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.DIFFERENCE, value);
    }

    /**
     * Returns a Mutation that means *= .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation product(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.PRODUCT, value);
    }

    /**
     * Returns a Mutation that means /= .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation quotient(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.QUOTIENT, value);
    }

    /**
     * Returns a Mutation that means %= .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation remainder(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.REMAINDER, value);
    }

    /**
     * Returns a Mutation that means insert .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation insert(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.INSERT, value);
    }

    /**
     * Returns a Mutation that means delete .
     * @param columnName column name
     * @param data column value
     * @return Mutation
     */
    public static Mutation delete(String columnName, Object data) {
        Object value = TransValueUtil.getFormatData(data);
        return new Mutation(columnName, Mutator.DELETE, value);
    }
}