दुर्भाग्य से, यह अपेक्षा से अधिक जटिल है। आपको STRUCT
का उपयोग करना होगा ऑब्जेक्ट्स, डिस्क्रिप्टर और अंत में, ARRAY
. नीचे एक कार्यशील उदाहरण है।
-- Database code --
CREATE TABLE project_types (
proj_id VARCHAR2(10),
proj_title VARCHAR2(10)
);
/
CREATE OR REPLACE TYPE project_type AS OBJECT (
proj_id VARCHAR2(10),
proj_title VARCHAR2(10)
);
/
CREATE OR REPLACE TYPE my_array AS TABLE OF project_type;
/
CREATE OR REPLACE PROCEDURE add_projects(p_projects_array IN my_array)
AS
BEGIN
IF p_projects_array IS NOT NULL THEN
FOR v_i IN 1..p_projects_array.LAST
LOOP
INSERT INTO project_types
VALUES (p_projects_array(v_i).proj_id,
p_projects_array(v_i).proj_title);
END LOOP;
END IF;
END;
/
// Java code - main class
import java.sql.Connection;
import java.sql.DriverManager;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleConnection;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
import oracle.sql.STRUCT;
import oracle.sql.StructDescriptor;
public class ArrayExampleMain {
public static void main(String[] args) throws Exception {
OracleConnection conn = getOracleConnection().unwrap(OracleConnection.class);
System.out.println("Got Connection.");
OracleCallableStatement callStmt = null;
try {
callStmt = (OracleCallableStatement)conn.prepareCall("{call add_projects(?)}");
// create array holding values for ProjectType object's properties
Object[] project1 = new Object[] {"1", "Title 1"};
Object[] project2 = new Object[] {"2", "Title 2"};
// descriptor for OBJECT type defined in database
StructDescriptor projectTypeDesc = StructDescriptor.createDescriptor("PROJECT_TYPE", conn);
// each struct is one ProjectType object
STRUCT structProject1 = new STRUCT(projectTypeDesc, conn, project1);
STRUCT structProject2 = new STRUCT(projectTypeDesc, conn, project2);
STRUCT[] structArrayOfProjects = {structProject1, structProject2};
// descriptor of TABLE type defined in database
ArrayDescriptor projectTypeArrayDesc = ArrayDescriptor.createDescriptor("MY_ARRAY", conn);
// array holding two ProjectType objects
ARRAY arrayOfProjects = new ARRAY(projectTypeArrayDesc, conn, structArrayOfProjects);
callStmt.setARRAY(1, arrayOfProjects);
callStmt.execute();
conn.commit();
System.out.println("Committed.");
} catch (Exception e) {
if (conn != null) try { conn.rollback(); } catch (Exception ex) { System.out.println("Rollback failed."); }
throw e;
} finally {
callStmt.close();
conn.close();
}
}
public static Connection getOracleConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@YOUR_HOST:orcl";
String username = "hr";
String password = "password";
Class.forName(driver); // load Oracle driver
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
}
project_types
. की सामग्री की जाँच करना मुख्य वर्ग के निष्पादन के बाद तालिका:
SELECT * FROM project_types;
आउटपुट:
PROJ_ID PROJ_TITLE ---------- ---------- 1 Title 1 2 Title 2