这是我为解决此问题所做的工作。它不漂亮,但它有效。
我在我的类实现SQLData
中添加了一个方法,该方法接收 ajava.sql.Connection
并设置相应的java.sql.ARRAY
对象。
像这样的东西:
public class MyObject01 implements SQLData {
private String value;
private MyObject02[] details; // do note that details is a java array
// ... also added getters and setters for these two properties
private Array detailsArray;
public void setupArrays(oracle.jdbc.OracleConnection oconn)
throws SQLException
{
detailsArrays = oconn.createARRAY(MyObject02.ORACLE_OBJECT_ARRAY_NAME, getDetails());
// MyObject02.ORACLE_OBJECT_ARRAY_NAME must be the name of the oracle "table of" type name
// Also note that in Oracle you can't use JDBC's default createArray
// since it's not supported. That's why you need to get a OracleConnection
// instance here.
}
@Override
public void writeSQL(Stream stream) throws SQLException {
stream.writeString(getValue());
stream.writeArray(detailsArray); // that's it
}
@Override
public void readSQL(Stream stream) throws SQLException {
setValue(stream.readString());
Array array = stream.readArray();
if (array != null) {
setDetails((MyObject02[])array.getArray());
}
}
这是第一部分。
然后,在过程调用中使用该对象之前,调用setupArrays
该对象的方法。例子:
public class DB {
public static String executeProc(Connection conn, MyObject01 obj)
throws SQLException
{
CalllableStatement cs = conn.prepareCall(" { ? = call sch.proc(?) }");
cs.registerOutParameter(1, Types.VARCHAR);
obj.setupArrays((oracle.jdbc.Connection)conn);
cs.setObject(2, obj, Types.STRUCT);
cs.executeUpdate();
String ret = cs.getString(1);
cs.close();
return ret;
}
}
当然,在连接时,您需要正确注册您的类型:
Connection conn = DriverManager.getConnection("jdbc:oracle://localhost:1521/XE", "scott", "tiger" );
conn.getTypeMap().put(MyObject01.ORACLE_OBJECT_NAME, MyObject01.class);
conn.getTypeMap().put(MyObject02.ORACLE_OBJECT_NAME, MyObject02.class);
conn.getTypeMap().put(MyObject02.ORACLE_OBJECT_ARRAY_NAME, MyObject02[].class);
希望能帮助到你。