Spring Batch DB2 更新 DB2GSE.ST_POLYGON 失败

Question

我正在尝试将多边形插入到托管在 z/OS 上的 db2 表中 这是我的数据库项目编写器

<bean id="databaseItemWriter"
    class="org.springframework.batch.item.database.JdbcBatchItemWriter">
    <property name="dataSource" ref="dataSource" />
    <property name="sql">
        <value>  
        <![CDATA[         
          INSERT INTO SAMPLE_GEOMETRIES
                    (GEO_NAME, GEOMETRY)
            VALUES
                    ( ?, DB2GSE.ST_POLYGON(?, 1))
         ]]>
        </value>
    </property>

    <property name="itemPreparedStatementSetter">
        <bean class="com.amex.elbs.DAO.GeometriesItemPreparedStatementSetter" />
    </property>
</bean>

这是我自定义的预处理语句设置器

公共类 GeometriesItemPreparedStatementSetter 实现 ItemPreparedStatementSetter{

@Override
public void setValues(Geometries item, PreparedStatement ps) throws SQLException {
    ps.setString(1, item.Id);
    ps.setString(2, item.Polygon);
}

}

这是我的示例输入文件。它是用管道分隔的，并且有 ID 和多边形坐标。

pm251|'POLYGON((-159.335174733889 21.9483433404175,-159.327130348878 22.0446395507162,-159.295025589769 22.1248124949548,-159.343195828355 22.1970166285359,-159.391366885913 22.2291198667724,-159.576012589057 22.2131796383001,-159.712505933171 22.1490592515515,-159.800814224332 22.0366665967853,-159.736592652746 21.9644203111023,-159.640246973766 21.9483657695954,-159.576021285803 21.8841361312636,-159.439545188912 21.8680716835921,-159.335174733889 21.9483433404175))', 1

以下语句在z/OS上执行成功。

 ,INSERT,INTO SAMPLE_GEOMETRIES
  (GEO_NAME, GEOMETRY)
  VALUES
  ( 'PM',
  DB2GSE.ST_POLYGON('POLYGON((
       -159.335174733889 21.9483433404175,
       -159.327130348878 22.0446395507162,
       -159.295025589769 22.1248124949548,
       -159.343195828355 22.1970166285359,
       -159.391366885913 22.2291198667724,
       -159.576012589057 22.2131796383001,
       -159.712505933171 22.1490592515515,
       -159.800814224332 22.0366665967853,
       -159.736592652746 21.9644203111023,
       -159.640246973766 21.9483657695954,
       -159.576021285803 21.8841361312636,
       -159.439545188912 21.8680716835921,
       -159.335174733889 21.9483433404175))',1))
---------+---------+---------+---------+---------
DSNE615I NUMBER OF ROWS AFFECTED IS 1

这是我执行时得到的

Caused by: com.ibm.db2.jcc.am.SqlSyntaxErrorException: DB2 SQL Error: SQLCODE=-245, SQLSTATE=428F5, SQLERRMC=DB2GSE.ST_POLYGON, DRIVER=4.12.55
    at com.ibm.db2.jcc.am.hd.a(hd.java:676)
    at com.ibm.db2.jcc.am.hd.a(hd.java:60)
    at com.ibm.db2.jcc.am.hd.a(hd.java:127)
    at com.ibm.db2.jcc.am.mn.c(mn.java:2621)
    at com.ibm.db2.jcc.am.mn.d(mn.java:2609)
    at com.ibm.db2.jcc.am.mn.a(mn.java:2085)
    at com.ibm.db2.jcc.am.nn.a(nn.java:7054)
    at com.ibm.db2.jcc.am.mn.a(mn.java:2062)
    at com.ibm.db2.jcc.t4.cb.g(cb.java:136)
    at com.ibm.db2.jcc.t4.cb.a(cb.java:41)
    at com.ibm.db2.jcc.t4.q.a(q.java:32)
    at com.ibm.db2.jcc.t4.rb.i(rb.java:135)
    at com.ibm.db2.jcc.am.mn.ib(mn.java:2055)
    at com.ibm.db2.jcc.am.nn.rc(nn.java:3219)
    at com.ibm.db2.jcc.am.nn.s(nn.java:3370)
    at com.ibm.db2.jcc.am.nn.l(nn.java:2499)
    at com.ibm.db2.jcc.am.nn.addBatch(nn.java:2438)
    at org.springframework.batch.item.database.JdbcBatchItemWriter$1.doInPreparedStatement(JdbcBatchItemWriter.java:190)
    at org.springframework.batch.item.database.JdbcBatchItemWriter$1.doInPreparedStatement(JdbcBatchItemWriter.java:185)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:644)
    ... 28 more

Answer 1

error message for SQLCODE -245 内容为：“函数调用例程名称不明确”。

显然，数据库中有不止一个版本的DB2GSE.ST_POLYGON，接受不同类型的参数。您正在使用无类型参数标记：DB2GSE.ST_POLYGON(?, 1)，因此 DB2 无法确定您想要哪个版本的 DB2GSE.ST_POLYGON。

使用适当的数据类型向函数调用添加显式强制转换，例如：

DB2GSE.ST_POLYGON(CAST( ? AS VARCHAR(1000)), 1)