[英]how to pass a java object to oracle stored procedure with following details
[英]Pass oracle object type to java stored procedure
是否可以将 oracle 对象类型传递给 java 存储过程。 这是我到目前为止所拥有的。
Java存储过程:
create or replace and compile java source named Example as
import java.sql.SQLData;
import java.sql.SQLException;
import java.sql.SQLInput;
import java.sql.SQLOutput;
public class Example {
public static void test(ExObj obj) {
System.out.println(obj.client);
}
public static class ExObj implements SQLData {
public String client = "";
public String sql_type = "EXAMPLE_OBJECT";
public ExObj(String client, String sql_type) {
this.client = client;
this.sql_type = sql_type;
}
/* IMPLEMENTS SQLData */
public void setSqlType(String sqlType) {
sql_type = sqlType;
}
public void writeSQL(SQLOutput stream) throws SQLException {
stream.writeString(this.client);
}
public String getSQLTypeName() {
return sql_type;
}
public void readSQL(SQLInput stream, String sqlTypeName) throws SQLException {
sql_type = sqlTypeName;
this.client = stream.readString();
}
}
}
甲骨文程序:
CREATE OR REPLACE PROCEDURE example(ex_obj in example_object)
AS LANGUAGE JAVA
NAME 'Example.test(java.sql.Struct)';
Oracle 对象类型:
create or replace type example_object as object(
client varchar2(40)
)
调用过程的脚本:
declare
l_output DBMS_OUTPUT.chararr;
l_lines INTEGER := 1000;
l_obj example_object;
begin
DBMS_OUTPUT.enable(1000000);
DBMS_JAVA.set_output(1000000);
l_obj := example_object('client');
example(l_obj);
DBMS_OUTPUT.get_lines(l_output, l_lines);
FOR i IN 1 .. l_lines LOOP
-- Do something with the line.
-- Data in the collection - l_output(i)
DBMS_OUTPUT.put_line(l_output(i));
END LOOP;
end;
运行脚本时,我得到:
ORA-29531: 类示例中没有方法测试
ORA-06512:在“示例”,第 1 行
ORA-06512:在第 17 行
我认为这是因为 oracle object_type 没有正确映射到 java 类。 有没有办法做到这一点,如果是这样,我做错了什么?
下面提到的代码问题可能是原因。
1) 您必须声明一个object
type
的变量,以便您可以使用它。 您不能直接使用object
作为datatype
。 见下文 :
演示:
create or replace type example_object as object(
client varchar2(40)
);
/
--Created a type of the object
create or replace type x is table of example_object;
/
CREATE OR REPLACE PROCEDURE example(ex_obj in X)
AS
begin
DBMS_OUTPUT.put_line('Example.test(java.sql.Struct');
DBMS_OUTPUT.put_line('Inside the Procedure');
DBMS_OUTPUT.put_line (ex_obj(1).client);
end;
/
DECLARE
l_output DBMS_OUTPUT.chararr;
l_lines INTEGER := 1000;
l_obj x := x();
BEGIN
DBMS_OUTPUT.enable (1000000);
--DBMS_JAVA.set_output (1000000);
--You need to mention the position where the record will be saved in table.
l_obj.extend();
l_obj(1) := example_object('client1');
example (l_obj);
DBMS_OUTPUT.put_line (l_obj(1).client);
DBMS_OUTPUT.get_lines (l_output, l_lines);
FOR i IN 1 .. l_lines
LOOP
-- Do something with the line.
-- Data in the collection - l_output(i)
DBMS_OUTPUT.put_line (l_output (i));
END LOOP;
END;
/
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