/*
 * 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.facebook.presto.spi.transaction;

import java.sql.Connection;

public enum IsolationLevel
{
    SERIALIZABLE,
    REPEATABLE_READ,
    READ_COMMITTED,
    READ_UNCOMMITTED;

    public boolean meetsRequirementOf(IsolationLevel requirement)
    {
        switch (this) {
            case READ_UNCOMMITTED:
                return requirement == READ_UNCOMMITTED;

            case READ_COMMITTED:
                return requirement == READ_UNCOMMITTED ||
                    requirement == READ_COMMITTED;

            case REPEATABLE_READ:
                return requirement == READ_UNCOMMITTED ||
                        requirement == READ_COMMITTED ||
                        requirement == REPEATABLE_READ;

            case SERIALIZABLE:
                return true;
        }

        throw new AssertionError("Unhandled isolation level: " + this);
    }

    public static IsolationLevel fromJdbcValue(int value)
    {
        switch (value) {
            case Connection.TRANSACTION_READ_UNCOMMITTED:
                return READ_UNCOMMITTED;

            case Connection.TRANSACTION_READ_COMMITTED:
                return READ_COMMITTED;

            case Connection.TRANSACTION_REPEATABLE_READ:
                return REPEATABLE_READ;

            case Connection.TRANSACTION_SERIALIZABLE:
                return SERIALIZABLE;
        }

        throw new IllegalArgumentException("Unsupported isolation level value: " + value);
    }
}

@@ -605,37 +605,8 @@
 n;%0A%0A
-import java.sql.Connection;%0A%0A
 publ
@@ -1401,590 +1401,7 @@
    %7D
-%0A%0A    public static IsolationLevel fromJdbcValue(int value)%0A    %7B%0A        switch (value) %7B%0A            case Connection.TRANSACTION_READ_UNCOMMITTED:%0A                return READ_UNCOMMITTED;%0A%0A            case Connection.TRANSACTION_READ_COMMITTED:%0A                return READ_COMMITTED;%0A%0A            case Connection.TRANSACTION_REPEATABLE_READ:%0A                return REPEATABLE_READ;%0A%0A            case Connection.TRANSACTION_SERIALIZABLE:%0A                return SERIALIZABLE;%0A        %7D%0A%0A        throw new IllegalArgumentException(%22Unsupported isolation level value: %22 + value);%0A    %7D
 %0A%7D%0A

Remove unused method fromJdbcValue from IsolationLevel