mybatis jdbc枚举源码

 org.apache.ibatis.type.JdbcType ，Jdbc Type 枚举。代码如下：

// JdbcType.java

public enum JdbcType {

    /*
     * This is added to enable basic support for the
     * ARRAY data type - but a custom type handler is still required
     */
    ARRAY(Types.ARRAY),
    BIT(Types.BIT),
    TINYINT(Types.TINYINT),
    SMALLINT(Types.SMALLINT),
    INTEGER(Types.INTEGER),
    BIGINT(Types.BIGINT),
    FLOAT(Types.FLOAT),
    REAL(Types.REAL),
    DOUBLE(Types.DOUBLE),
    NUMERIC(Types.NUMERIC),
    DECIMAL(Types.DECIMAL),
    CHAR(Types.CHAR),
    VARCHAR(Types.VARCHAR),
    LONGVARCHAR(Types.LONGVARCHAR),
    DATE(Types.DATE),
    TIME(Types.TIME),
    TIMESTAMP(Types.TIMESTAMP),
    BINARY(Types.BINARY),
    VARBINARY(Types.VARBINARY),
    LONGVARBINARY(Types.LONGVARBINARY),
    NULL(Types.NULL),
    OTHER(Types.OTHER),
    BLOB(Types.BLOB),
    CLOB(Types.CLOB),
    BOOLEAN(Types.BOOLEAN),
    CURSOR(-10), // Oracle
    UNDEFINED(Integer.MIN_VALUE + 1000),
    NVARCHAR(Types.NVARCHAR), // JDK6
    NCHAR(Types.NCHAR), // JDK6
    NCLOB(Types.NCLOB), // JDK6
    STRUCT(Types.STRUCT),
    JAVA_OBJECT(Types.JAVA_OBJECT),
    DISTINCT(Types.DISTINCT),
    REF(Types.REF),
    DATALINK(Types.DATALINK),
    ROWID(Types.ROWID), // JDK6
    LONGNVARCHAR(Types.LONGNVARCHAR), // JDK6
    SQLXML(Types.SQLXML), // JDK6
    DATETIMEOFFSET(-155); // SQL Server 2008

    /**
     * 类型编号。嘿嘿，此处代码不规范
     */
    public final int TYPE_CODE;

    /**
     * 代码编号和 {@link JdbcType} 的映射
     */
    private static Map codeLookup = new HashMap<>();

    static {
        // 初始化 codeLookup
        for (JdbcType type : JdbcType.values()) {
            codeLookup.put(type.TYPE_CODE, type);
        }
    }

    JdbcType(int code) {
        this.TYPE_CODE = code;
    }

    public static JdbcType forCode(int code) {
        return codeLookup.get(code);
    }

}

可以对比java类型