/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.core.constant.transaction;

import com.google.common.base.Optional;

/**
 * Transaction operation type.
 *
 * @author zhaojun
 */
public enum TransactionOperationType {
    
    BEGIN, COMMIT, ROLLBACK;
    
    /**
     * Get operation type.
     * 
     * @param sql SQL
     * @return transaction operation type
     */
    // TODO :hongjun move to TCLParser, need parse comment etc
    public static Optional<TransactionOperationType> getOperationType(final String sql) {
        switch (sql.toUpperCase()) {
            case "BEGIN":
            case "START TRANSACTION":
            case "SET AUTOCOMMIT=0":
                return Optional.of(TransactionOperationType.BEGIN);
            case "COMMIT":
                return Optional.of(TransactionOperationType.COMMIT);
            case "ROLLBACK":
                return Optional.of(TransactionOperationType.ROLLBACK);
            default:
                return Optional.absent();
        }
    }
}

/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * 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.
 * </p>
 */

package io.shardingsphere.core.constant.transaction;

import com.google.common.base.Optional;

/**
 * Transaction operation type.
 *
 * @author zhaojun
 * @author maxiaoguang
 */
public enum TransactionOperationType {
    
    UNKNOWN, AUTO_COMMIT_OFF, AUTO_COMMIT_ON, SET_TRANSACTION, COMMIT, ROLLBACK, SAVEPOINT, BEGIN;
    
    /**
     * Get operation type.
     * 
     * @param sql SQL
     * @return transaction operation type
     */
    // TODO :hongjun move to TCLParser, need parse comment etc
    public static Optional<TransactionOperationType> getOperationType(final String sql) {
        switch (sql.toUpperCase()) {
            case "BEGIN":
            case "START TRANSACTION":
            case "SET AUTOCOMMIT=0":
                return Optional.of(TransactionOperationType.BEGIN);
            case "COMMIT":
                return Optional.of(TransactionOperationType.COMMIT);
            case "ROLLBACK":
                return Optional.of(TransactionOperationType.ROLLBACK);
            default:
                return Optional.absent();
        }
    }
}

add some type to TransactionOperationType