等效的Java数据类型可保存Informix DATETIME YEAR TO SECOND值？

我想将Informix DATETIME YEAR TO SECOND映射到Java数据类型.

有人可以提供相应的Java数据类型来保存Informix DATETIME YEAR TO SECOND值吗？

答案是：根据我的JDBC驱动程序,java.sql.Time.

解决方法:

我使用乔纳森·莱弗勒(Jonathan Leffler)的表格对以下内容进行了简单测试：
 Informix 7.3 – Declaring a date column data type with default as current date on insert/update

我使用Jython和JDBC Informix驱动程序JDBC.3.70.JC1DE.使用元数据的测试代码如下：

    db = DriverManager.getConnection(db_url, usr, passwd)
    c = db.createStatement()
    rs = c.executeQuery("SELECT * FROM test_datetime")
    rsmd = rs.getMetaData()
    print('columnCnt: %d' % (rsmd.getColumnCount()))
    while (rs.next()):
        for i in range(rsmd.getColumnCount()):
            col_no = i + 1
            print("value: [%s]" % rs.getString(col_no))
            print("name: [%s]" % rsmd.getColumnName(col_no))
            print("Java type: %d" % rsmd.getColumnType(col_no))
            print("Java class name: %s" % rsmd.getColumnClassName(col_no))
            print("column type name: %s" % rsmd.getColumnTypeName(col_no))
            print('-' * 20)

有趣的列的输出：

value: [03.01.11]
name: [date_column]
Java type: 91
Java class name: java.sql.Date
column type name: date
--------------------
value: [2011-01-03 00:00:00.0]
name: [datetime_yd]
Java type: 93
Java class name: java.sql.Timestamp
column type name: datetime year to day
--------------------
value: [2011-01-03 10:28:51.0]
name: [datetime_ys]
Java type: 93
Java class name: java.sql.Timestamp
column type name: datetime year to second
--------------------
value: [10:28:51]
name: [datetime_hs]
Java type: 92
Java class name: java.sql.Time
column type name: datetime hour to second

因此,此版本的JDBC驱动程序的正确答案是：datetime至year的秒映射到java.sql.Timestamp.

PS：您写的驱动程序将其映射到java.sql.Time,但也许您使用的是Informix JDBC驱动程序的旧版本？

标签：informix,jdbc,java
来源： https://codeday.me/bug/20191208/2094674.html