com.xiaoleilu.hutool.db.dialect.DialectFactory Maven / Gradle / Ivy
package com.xiaoleilu.hutool.db.dialect;
import java.sql.Connection;
import javax.sql.DataSource;
import com.xiaoleilu.hutool.db.DbUtil;
import com.xiaoleilu.hutool.db.dialect.impl.AnsiSqlDialect;
import com.xiaoleilu.hutool.db.dialect.impl.H2Dialect;
import com.xiaoleilu.hutool.db.dialect.impl.MysqlDialect;
import com.xiaoleilu.hutool.db.dialect.impl.OracleDialect;
import com.xiaoleilu.hutool.db.dialect.impl.PostgresqlDialect;
import com.xiaoleilu.hutool.db.dialect.impl.SqlServer2012Dialect;
import com.xiaoleilu.hutool.db.dialect.impl.Sqlite3Dialect;
import com.xiaoleilu.hutool.util.ClassLoaderUtil;
import com.xiaoleilu.hutool.util.StrUtil;
/**
* 方言工厂类
*
* @author loolly
*
*/
public class DialectFactory {
/** JDBC 驱动 MySQL */
public final static String DRIVER_MYSQL = "com.mysql.jdbc.Driver";
/** JDBC 驱动 MySQL,在6.X版本中变动驱动类名,且使用SPI机制 */
public final static String DRIVER_MYSQL_V6 = "com.mysql.cj.jdbc.Driver";
/** JDBC 驱动 Oracle */
public final static String DRIVER_ORACLE = "oracle.jdbc.driver.OracleDriver";
/** JDBC 驱动 PostgreSQL */
public final static String DRIVER_POSTGRESQL = "org.postgresql.Driver";
/** JDBC 驱动 SQLLite3 */
public final static String DRIVER_SQLLITE3 = "org.sqlite.JDBC";
/** JDBC 驱动 SQLServer */
public final static String DRIVER_SQLSERVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
/** JDBC 驱动 Hive */
public final static String DRIVER_HIVE = "org.apache.hadoop.hive.jdbc.HiveDriver";
/** JDBC 驱动 Hive2 */
public final static String DRIVER_HIVE2 = "org.apache.hive.jdbc.HiveDriver";
/** JDBC 驱动 H2 */
public final static String DRIVER_H2 = "org.h2.Driver";
/** JDBC 驱动 Derby */
public final static String DRIVER_DERBY = "org.apache.derby.jdbc.ClientDriver";
/** JDBC 驱动 Derby嵌入式 */
public final static String DRIVER_DERBY_EMBEDDED = "org.apache.derby.jdbc.EmbeddedDriver";
private DialectFactory() {
}
/**
* 创建方言
*
* @param driverName JDBC驱动类名
* @return 方言
*/
public static Dialect newDialect(String driverName) {
if (StrUtil.isNotBlank(driverName)) {
if (DRIVER_MYSQL.equalsIgnoreCase(driverName) || DRIVER_MYSQL_V6.equalsIgnoreCase(driverName)) {
return new MysqlDialect();
} else if (DRIVER_ORACLE.equalsIgnoreCase(driverName)) {
return new OracleDialect();
} else if (DRIVER_SQLLITE3.equalsIgnoreCase(driverName)) {
return new Sqlite3Dialect();
} else if (DRIVER_POSTGRESQL.equalsIgnoreCase(driverName)) {
return new PostgresqlDialect();
} else if (DRIVER_H2.equalsIgnoreCase(driverName)) {
return new H2Dialect();
} else if (DRIVER_SQLSERVER.equalsIgnoreCase(driverName)) {
return new SqlServer2012Dialect();
}
}
// 无法识别可支持的数据库类型默认使用ANSI方言,可兼容大部分SQL语句
return new AnsiSqlDialect();
}
/**
* 通过JDBC URL等信息识别JDBC驱动名
*
* @param nameContainsProductInfo 包含数据库标识的字符串
* @return 驱动
*/
public static String identifyDriver(String nameContainsProductInfo) {
if (StrUtil.isBlank(nameContainsProductInfo)) {
return null;
}
// 全部转为小写,忽略大小写
nameContainsProductInfo = nameContainsProductInfo.toLowerCase();
String driver = null;
if (nameContainsProductInfo.contains("mysql")) {
driver = ClassLoaderUtil.isPresent(DRIVER_MYSQL_V6) ? DRIVER_MYSQL_V6 : DRIVER_MYSQL;
} else if (nameContainsProductInfo.contains("oracle")) {
driver = DRIVER_ORACLE;
} else if (nameContainsProductInfo.contains("postgresql")) {
driver = DRIVER_POSTGRESQL;
} else if (nameContainsProductInfo.contains("sqlite")) {
driver = DRIVER_SQLLITE3;
} else if (nameContainsProductInfo.contains("sqlserver")) {
driver = DRIVER_SQLSERVER;
} else if (nameContainsProductInfo.contains("hive")) {
driver = DRIVER_HIVE;
} else if (nameContainsProductInfo.contains("h2")) {
driver = DRIVER_H2;
} else if (nameContainsProductInfo.startsWith("jdbc:derby://")) {
// Derby数据库网络连接方式
driver = DRIVER_DERBY;
} else if (nameContainsProductInfo.contains("derby")) {
// 嵌入式Derby数据库
driver = DRIVER_DERBY_EMBEDDED;
}
return driver;
}
/**
* 创建方言
*
* @param ds 数据源
* @return 方言
*/
public static Dialect newDialect(DataSource ds) {
return newDialect(DbUtil.identifyDriver(ds));
}
/**
* 创建方言
*
* @param conn 数据库连接对象
* @return 方言
*/
public static Dialect newDialect(Connection conn) {
return newDialect(DbUtil.identifyDriver(conn));
}
}
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