MrUltimateLibrary Source

package eu.mrneznamy.mrultimatelibrary.database;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.function.Consumer;

/**
 * Database interface for MySQL and SQLite
 */
public interface MrLibDatabase {
    
    /**
     * Connect to database
     * 
     * @return true if successful
     */
    boolean connect();
    
    /**
     * Disconnect from database
     */
    void disconnect();
    
    /**
     * Check if connected
     */
    boolean isConnected();
    
    /**
     * Get connection
     */
    Connection getConnection();
    
    /**
     * Execute update (INSERT, UPDATE, DELETE)
     * 
     * @param sql SQL query
     * @param params Parameters
     * @return Number of affected rows
     */
    int executeUpdate(String sql, Object... params);
    
    /**
     * Execute query (SELECT)
     * 
     * @param sql SQL query
     * @param callback Result handler
     * @param params Parameters
     */
    void executeQuery(String sql, Consumer<ResultSet> callback, Object... params);
    
    /**
     * Execute query and return result
     * 
     * @param sql SQL query
     * @param params Parameters
     * @return ResultSet or null
     */
    ResultSet executeQuerySync(String sql, Object... params);
    
    /**
     * Create table if not exists
     * 
     * @param tableName Table name
     * @param columns Columns definition
     */
    void createTable(String tableName, String columns);
    
    /**
     * Check if table exists
     * 
     * @param tableName Table name
     * @return true if exists
     */
    boolean tableExists(String tableName);
}