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JDBC Type 4 driver for MySQL
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/*
 * Copyright (c) 2021, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, version 2.0, as published by the
 * Free Software Foundation.
 *
 * This program is also distributed with certain software (including but not
 * limited to OpenSSL) that is licensed under separate terms, as designated in a
 * particular file or component or in included license documentation. The
 * authors of MySQL hereby grant you an additional permission to link the
 * program and your derivative works with the separately licensed software that
 * they have included with MySQL.
 *
 * Without limiting anything contained in the foregoing, this file, which is
 * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at
 * http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
 */

package com.mysql.cj;

import java.sql.Statement;
import java.util.function.Consumer;

/**
 * Instances of this interface keep the list of query attributes assigned to a {@link Statement} object.
 */
public interface QueryAttributesBindings {
    /**
     * Adds a new query attribute to the list of query attributes. Implementations must validate the type of the given the object and reject it or replace it by
     * another representation if not supported, by its String version, for example. Query attribute names are not checked for duplication.
     * 
     * @param name
     *            the query attribute name.
     * 
     * @param value
     *            the query attribute value.
     */
    void setAttribute(String name, Object value);

    /**
     * Get the count of query attributes in the list.
     * 
     * @return
     *         the number of query attributes existing in the list.
     */
    int getCount();

    /**
     * Returns an internal representation of the query attribute in the given position of the query attributes list. It's implementation dependent what to do
     * when the index value is invalid.
     * 
     * @param index
     *            the position of the query attribute value to return.
     * 
     * @return
     *         the {@link QueryAttributesBindValue} in the given position of the query attributes list.
     */
    QueryAttributesBindValue getAttributeValue(int index);

    /**
     * Runs through all query attributes while feeding the given {@link Consumer} with each one of them.
     * 
     * @param bindAttribute
     *            A {@link Consumer} for each one of the single query attributes.
     */
    void runThroughAll(Consumer bindAttribute);

    /**
     * Removes all query attributes from the query attributes list.
     */
    void clearAttributes();
}