/*
 *
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.apache.flink.connector.phoenix.internal.executor;

import org.apache.flink.annotation.Internal;
import org.apache.flink.connector.phoenix.JdbcStatementBuilder;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.function.Function;

/** Executes the given JDBC statement in batch for the accumulated records. */
@Internal
public interface JdbcBatchStatementExecutor<T> {

    /** Create statements from connection. */
    void prepareStatements(Connection connection) throws SQLException;

    void addToBatch(T record) throws SQLException;

    /** Submits a batch of commands to the database for execution.
     * @param conn*/
    void executeBatch(Connection conn) throws SQLException;

    /** Close JDBC related statements. */
    void closeStatements() throws SQLException;

    static <T, K> JdbcBatchStatementExecutor<T> keyed(
            String sql, Function<T, K> keyExtractor, JdbcStatementBuilder<K> statementBuilder) {
        return new KeyedBatchStatementExecutor<>(sql, keyExtractor, statementBuilder);
    }

    static <T, V> JdbcBatchStatementExecutor<T> simple(
            String sql, JdbcStatementBuilder<V> paramSetter, Function<T, V> valueTransformer) {
        return new SimpleBatchStatementExecutor<>(sql, paramSetter, valueTransformer);
    }
}
