如何创建oracle.sql.ARRAY对象？ [英] How to create an oracle.sql.ARRAY object?

问题描述

这个问题与我的原始问题如何将数组从Java返回到PL / SQL？有关，但是更多具体。

This question is related to my original issue How to return an array from Java to PL/SQL ?, but is a more specific.

我一直在阅读 Oracle数据库JDBC开发人员指南和

• 创建ARRAY对象


• < a href =http://download.oracle.com/docs/cd/E11882_01/java.112/e16548/ssid.htm =nofollow noreferrer>服务器端内部驱动程序


• oracle .jdbc.OracleConnection


• oracle.jdbc.OracleDriver

• Creating ARRAY objects
• Server-Side Internal Driver
• oracle.jdbc.OracleConnection
• oracle.jdbc.OracleDriver

但我仍然无法编写最小代码，我可以使用它来创建ARRAY

but I still fail to write a minimum code where I can create ARRAY using

ARRAY array = oracle.jdbc.OracleConnection.createARRAY(sql_type_name, elements);

按创建ARRAY对象。

我正在使用Oracle数据库JVM。

I'm using Oracle Database JVM.

我试过以下内容：

示例1

create or replace type widgets_t is table of varchar2(32767);
/

create or replace and compile java source named "so20j1" as
public class so20j1 {
    public void f1() {
        String[] elements = new String[]{"foo", "bar", "zoo"};
        oracle.sql.ARRAY widgets =
            oracle.jdbc.OracleConnection.createARRAY("widgets_t", elements);
    }
};
/
show errors java source "so20j1"

失败：

Errors for JAVA SOURCE "so20j1":

LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0  so20j1:4: non-static method
     createARRAY(java.lang.String,java.lang.Object) cannot be
     referenced from a static context

0/0  1 error
0/0  ^
0/0  oracle.sql.ARRAY widgets =
     oracle.jdbc.OracleConnection.createARRAY("widgets_t", elements);

示例2

create or replace type widgets_t is table of varchar2(32767);
/

create or replace and compile java source named "so20j2" as

public class so20j2 {
    public void f1() {
        String[] elements = new String[]{"foo", "bar", "zoo"};
        oracle.jdbc.OracleDriver ora = new oracle.jdbc.OracleDriver();
        java.sql.Connection conn = ora.defaultConnection();
        oracle.sql.ARRAY widgets = conn.createARRAY("widgets_t", elements);
    }
};
/
show errors java source "so20j2"

失败：

Errors for JAVA SOURCE "so20j2":

LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0  so20j2:6: cannot find symbol
0/0  symbol  : method createARRAY(java.lang.String,java.lang.String[])
0/0  1 error
0/0  oracle.sql.ARRAY widgets = conn.createARRAY("widgets_t",
     elements);

0/0  ^
0/0  location: interface java.sql.Connection

免责声明：我还不是Java程序员。

Disclaimer: I'm not a Java programmer (yet).

推荐答案

你在右边使用＃2跟踪，但无法从类型为java.sql.Connection的连接创建oracle数组。必须是OracleConnection才能使用这些方法。

You're on the right track with #2, but you can't create an oracle Array from a connection of type java.sql.Connection. It has to be an OracleConnection to be able to use those methods.

oracle.jdbc.OracleDriver ora = new oracle.jdbc.OracleDriver();
java.sql.Connection conn = ora.defaultConnection();
OracleConnection oraConn = conn.unwrap(OracleConnection.class);
oracle.sql.ARRAY widgets = oraConn.createARRAY("widgets_t", elements);

这篇关于如何创建oracle.sql.ARRAY对象？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！