Recursing through table / complex return types in Java Stored Functions

I have a table representing a tree with arbitrary depth, of the form:
ID NUMBER(10) PRIMARY KEY,
NAME VARCHAR2(20),
PARENT NUMBER(10)
with PARENT being a foreign key for ID, so that top-level nodes in the tree have a NULL PARENT, and other nodes have the ID of their parent node in the PARENT field.
I want a good way to get a row representing a node as well as all its ancestor nodes recursively up to the top level. I do this a lot in my Java application, and right now it works by just getting each row, checking if PARENT is null, and recursing again until I get the top-level node. Since this recursion is in Java and I do multiple queries it's rather slow, and I'd rather perform this operation in the database (using a Java Stored Function/Procedure or PL/SQL).
I'm no good at PL/SQL so don't have a clue how to go about doing this sort of thing, and although I can write a Java Stored Function that does the same recursion I do in the application, I don't know how to return the results. I can't return a REF CURSOR type since the results are from multiple queries, and I can't find any documentation about how to return structured types from a JSF.
If anyone could give me a near-complete PL/SQL listing that does this or (better) help me to complete my Java Stored Function by returning the results in a structured type.

You are my own personal God (for the day). Thanks, exactly what I needed, and all in one query with no procedural.

Similar Messages

Why returning string from java stored function failed ?

I created java stored function: it's doing http post, parsing xml from http reply, and returning string result.
Sometimes, it doesn't return any value. What can be a reason ?
The high level procedure, has following form:
class SBE {
public static String call(String arg0) {
SBE sbe=new SBE("d:\\oracle\\ora81\\network\\log\\SBE.log");
String result=SBEParser.go(sbe.sendRequest(arg0, ""), sbe.logger);
sbe.logger.log(result);
sbe.logger.log("Finish SBE intetraction");
return result;
PLSQL wrapper has a simple form:
create or replace package PG_SBE as
function CALL(arg0 in varchar2) return varchar2;
end;
create or replace package body PG_SBE as
function CALL(arg0 varchar2) return varchar2 as language java name 'SBE.call(java.lang.String) return java.lang.String';
end;
In log file ("d:\\oracle\\ora81\\network\\log\\SBE.log"), I can find message :
"Finish SBE intetraction"
but query:
select pg_sbe.call("any argument") from dual;
doesn't finish.
What can be a reason ? What can I do to trace stage of convertion java string to varchar ?
Please help me...
Marek

This comes up periodically. It just isn't possible using that type of approach. Probably the best you could do is the create an ADT (containing collections) and use that to pass a 'batch' of information.
Hopefully this will get addressed in the next release of the database.

Why returning string from java stored function failed ? HELP ME, PLEASE

Hi everybody,
I created java stored function: it's doing http post, parsing xml from http reply, and returning string result.
Sometimes, it doesn't return any value. What can be a reason ?
The high level procedure, has following form:
class SBE {
public static String call(String arg0) {
SBE sbe=new SBE("d:\\oracle\\ora81\\network\\log\\SBE.log");
String result=SBEParser.go(sbe.sendRequest(arg0, ""), sbe.logger);
sbe.logger.log(result);
sbe.logger.log("Finish SBE intetraction");
return result;
PLSQL wrapper has a simple form:
create or replace package PG_SBE as
function CALL(arg0 in varchar2) return varchar2;
end;
create or replace package body PG_SBE as
function CALL(arg0 varchar2) return varchar2 as language java name 'SBE.call(java.lang.String) return java.lang.String';
end;
In log file ("d:\\oracle\\ora81\\network\\log\\SBE.log"), I can find message :
"Finish SBE intetraction"
but query:
select pg_sbe.call("any argument") from dual;
doesn't finish.
What can be a reason ? What can I do to trace stage of convertion java string to varchar ?
Please help me...
Best regards
Marek

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Stefan Fdgersten ([email protected]):
Maybe your call is wrong... Shouldn't there be a "?" instead of "1"?
Your code:
String myquery = "begin :1 := jspTest; end;";
I provide my (working) call from java as an example. Maybe it is of any help... :)
import java.sql.*;
import oracle.jdbc.driver.*;
public Vector getAllHosts() throws SQLException {
//return getHosts(false, -1);
Connection conn = null;
CallableStatement cs = null;
Vector hostV = new Vector();
try {
conn = getConnection();
String query = "{ ? = call curTestPkg.curTestFunc}";
cs = conn.prepareCall(query);
cs.registerOutParameter(1, OracleTypes.CURSOR);
cs.execute();
ResultSet rs = ((OracleCallableStatement)cs).getCursor(1);
while (rs.next()) {
Host host = new Host(
rs.getInt("hostid")
, rs.getString("name")
, rs.getString("descr")
, rs.getString("os"));
hostV.add(host);
cs.close();
return hostV;
} finally {
close(conn, cs);
<HR></BLOCKQUOTE>
hi Stefan thanx.....even after changing the call statement i get the same error. i changed query string as...
String myquery = "{ ? = call jspTest}";
CallableStatement cst = con.prepareCall(myquery);
Can u please check out my call sepc that i have written in pl/sql and plz let me know it there is any error in that.
PS : THIS IS THE FIRST TIME I AM WORKING WITH PL/SQL AND IT IS URGENT

Easy way to evaluate a complex return type in adf taskflow

Hi,
I use a method call in adf taskflow where I call a bpel ws . This bpel has a complex return type. I want to evaluate in the taskflow router if STATUS==true . Can this be done with pageflowscope (in the method call , I have a return value) or do I need a methodIterator / accessorIterator in the pagedef.
thanks edwin
<?xml version="1.0" encoding="UTF-8" ?>
<JavaBean xmlns="http://xmlns.oracle.com/adfm/beanmodel" version="11.1.1.47.96"
id="process_Result" Package="nl.ordina.order.view.CreditCheck"
BeanClass="nl.ordina.order.view.CreditCheck.process_Result"
isJavaBased="false">
<Attribute Name="STATUS" IsUpdateable="0" Type="java.lang.Boolean"/>
<Attribute Name="LIMIT" IsUpdateable="0" Type="java.math.BigDecimal"/>
<Attribute Name="REASON" IsUpdateable="0" Type="java.lang.String"/>
</JavaBean>
Here is the methodaction in the pagedef
<methodAction id="process" RequiresUpdateModel="true" Action="invokeMethod"
MethodName="process" IsViewObjectMethod="false"
DataControl="CreditCheck" InstanceName="CreditCheck"
ReturnName="CreditCheck.methodResults.process_CreditCheck_process_result">

nice try,
Unfortunately your method is easily circumvented by either 1.) disabling javascript in the browser preferences or 2.) viewing the source code for the page and clearly seeing the required password or 3.) simply bookmarking and visiting protectpage.html
It may take you 5 mins. to password protect your iweb site by using the method you've described, but it would take a visitor less than a minute to bypass the password protection. You need server-side scripting like php to enable real password protection so that information is processed on the server before the page is loaded.

Complex return type for operations in Application Services

Hi all,
I am trying to create a complex return type for one of operation in CAF Application service.I have created a complex dataStructure named productList and added product bussiness object as its attribute with cardinality 0--n. And used product dataType as my return type.
But I am not getting any output but its work fine with cardinality 0--1.
I am using CE 7.1 SP5 trial version.......
Can anyone

Hi,
And used product dataType as my return type.
Are you sure you did not forgot to change you operations return type to "productList"?
Best regards
Philipp

CE7.1 SP3/SP4 Application service - complex return type

Hi all,
can anybody tell me how to create an operation with a complex return type (collection) within an application service.I can't find it in the documentation!
I would appreciate helpful answers.
BR,
Martin

Hi,
It isnt that tough ... following are the steps ..
Suppose you want to return a list of customers. First create a structure "Customer". Once that is done create another structure "CustomerList" ... now add "Customer" to it as the attribute. Set the cardinality of this "Customer" attribute as 0-n or 1-n ...
Thats it .. Hope this helps.
Ashutosh

Return 2 values (string, number) multiple rows, from java stored function

I would like to return 2 values (String, number prefered but String, String will work) from a java stored function.
I was able to successfully return a varray of varchar2 values but I was wondering if it is possible to return 2 values by using a varray?
Is it even possible? I tried using combinations of types which included a varray of objects (with 2 attributes) or a type as table of objects but I couldn't figure out how in my java code to set these values. Also what would my java function return type be and what Oracle type would map to it?
Any help and examples or pointers would be great.
Thanks,
Dennis

Thanks to all. I finally figured it out through all the pieces on the web.
Here is what worked for me. First create 2 oracle types. One object type to represent the "columns" I will pass back:
CREATE OR REPLACE TYPE COST_OBJ AS OBJECT (COST_NAME NVARCHAR2(50), COST_VALUE number ) NOT FINAL
note: make sure the "strings" are defined as NVARCHAR2 or Java will puke if it is just VARCHAR2.
Then create a table type to hold your objects defined as following:
CREATE OR REPLACE TYPE COST_OBJ_TABLE is table OF COST_OBJ
Then create the oracle stored function that is a wrapper to the java function:
CREATE OR REPLACE FUNCTION get_Costs(Name VARCHAR2, evalDate VARCHAR2, fuelCodeID NUMBER) return COST_OBJ_TABLE
is language java name
'com.costs.storedProcedures.Cost.getCosts(java.lang.String, java.lang.String, int) return oracle.sql.ARRAY'
Once that is done, Oracle is ready. The Java function looks something like this:
public ARRAY getCosts(String name, String evalDate, int fuelCodeID) {
DBAccess da = getDBAccess();
// get a handle on the connection
Connection conn = da.getConnection();
// The stuff that will be returned should be as type object array
// make it to the size of the number of fuelcomponents passed in
Object[] returnStuff = new Object[3];
// create the type of struct that is defined on the database
StructDescriptor structDesc =
StructDescriptor.createDescriptor("CY_UMAP.COST_OBJ", conn);
for (int i = 0; i < returnStuff .size(); i++) {
Object[] costValues = new Object[]{
     "This is object " + i,
     new Integer ( i ) };
STRUCT cost_obj = new STRUCT(structDesc, conn, costValues);
returnStuff[i] = cost_obj;
ArrayDescriptor x_ad = ArrayDescriptor.createDescriptor (
"CY_UMAP.COST_OBJ_TABLE", conn);
ARRAY x_array = new ARRAY(x_ad, conn, returnStuff);
return x_array;
I hope this helps others.
Dennis

How to return custJava Object from Java Stored Function/Procedure to Java Application

I WILL PAY $100 FOR SOLUTION.
Oracle JDBC documentation gives step by step on how to return Oracle Type Object to Java Application. No question here.
But is it possible to create Java Stored Function [getMyClass() ] which returns CUSTOM Java based object [MyClass] to Java application like:
//java stored function
class Foo
public static MyClass getMyClass()
return new MyClass();
//java class I want to return to Java
class MyClass
public String getGreetings(String name)
return "Hello " + name;
I tried to do it using intermittent Oracle
Type Object and OracleConnection map to make binding between Java->Oracle->Java. I could
not get throgh meaningless run time ORA Errors. Any kind of help would be greatly
appreciated. If you know the answer please
post it or e-mail [email protected]
null

You don't say which version of the database you are on. There's an interesting looking article on OTN on handling CLOBs in JDBC in 10g. It may well be useful for earlier versions too (but no guarantees).
Cheers, APC

Wrong value in java stored function

Hi All,
i have written a java stored function,
at the end of the code it insert record into the database
among other columns also a number(18,3) column,
when I debug it (out side of server) - works fine.
when I load it to database i get wrong values in column
(like instead of 76.546 i get 77.667) I can't figure out where it comes from.
I use big decimal in java code.
if i Hard code the value in java code it works fine!
am I missing something ?, calculations/ data type different out side then inside database? using oracle 10.2.0.2
Cheers
Sahar

Hi
the code calculate some averages of amounts ( money) according to several
conditions,and parameters given to the function and stores the average into table in the database
the money columns are of data type 18,3 , both source and target tables have same structure.
thanks
Sahar

EJB3 Creating Web Services with Complex Return Types

Hi
Not sure if this is the right place, but hoping someone can help!
I have an entity bean that has a collection (list<Address>) of sub-entities. I have then created a session bean to retrieve the Business and populate it's children.
I then expose this as a web service and although it works and I get appropriate XML out, the WSDL of the deployed service is not as I would like.
For example:
The return type is
<complextype name="Business">
<sequence>
<element name="id" type="int"/>
<element name="addresses" type="ns1:list"/>
</sequence>
</complextype>
<complextype name="Address">
<sequence>
<element name="id" type="int"/>
<element name="addresses1" type="string"/>
<element name="addresses2" type="string"/>
<element name="addresses3" type="string"/>
</sequence>
</complextype>
ns1:list is included as a separate schema as a complex extension of the base "collection"
So, even though the Address type is there it is not referenced from Business.
So, when I'm calling the Web Service from BPEL or ESB, I have not got the ability to map adequately back from the response.
I have tried a whole bunch of ways of getting this to work, but so far to no avail...
Has anyone seen this before, or can I somehow override the mapping from the Entity to the WSDL?
Any help would be most appreciated.
Thanks
Chris

Thanks. We are using a Java Proxy to consume the web service as we need to use JAX-WS handlers. We created data control from the service stub that was created by the proxy. Our issue is with the response XML which comes as a complex type. Also, the data control is understanding the complex type and is creating the structure right. The problem is when we drag that control on a JSF page. No data is displayed. We think that we are not traversing the complex object properly which is creating the issue.
I understand that you answer related to the input is applicable to output as well. We can change the structure by flattening it but we thought that in 11G there is some new features where we can use the complex types out of the box without any change. Is that true? Also, any luck in finding the documents (broken links) on your blog page?

Complex Return types from web service

Hi,
Iam developing a web service using axis.In that i want to return array of objects to the client.
But when iam calling from the client side iam getting the class cast exception.
I wrote server-config.wsdd file manually. do i need to add any more if i want to return array of java beans.
server-config.wsdd
<service name="MyService" provider="java:RPC">
    <requestFlow>
      <handler type="soapmonitor"/>
    </requestFlow>
    <responseFlow>
      <handler type="soapmonitor"/>
    </responseFlow>
     <parameter name="allowedMethods" value="*"/>
     <parameter name="className" value="com.a.b.c.X.Y.ServiceDelegate"/>
<beanMapping qname="myNS:ABCVo"
xmlns:myNS="com.a.b.c.vo"
languageSpecificType="java:com.a.b.c.vo.ABCVo"/>
</service>
ServiceDelegate:
public ABCVo[] getCount(String accessType,long orgId,Date fromDate,Date toDate)
          return ABCVo[];
client:
I place all the stubs in the client app as a jar file. and the code is just like
ABCVo[] so     =     del.getCount("group",l,calendar,calendar);
Iam getting the following exception:
AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: java.lang.ClassCastException: [Ljava.lang.Object;
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}hostname:evoke12
java.lang.ClassCastException: [Ljava.lang.Object;
at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder
.java:222)
at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.
java:129)
at org.apache.axis.encoding.DeserializationContext.endElement(Deserializ
ationContext.java:1087)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endEleme
nt(AbstractSAXParser.java:633)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scan
EndElement(XMLNSDocumentScannerImpl.java:719)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:834)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.
java:148)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Ab
stractSAXParser.java:1242)
at weblogic.xml.jaxp.WebLogicXMLReader.parse(WebLogicXMLReader.java:133)
at weblogic.xml.jaxp.RegistryXMLReader.parse(RegistryXMLReader.java:153)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
at org.apache.axis.encoding.DeserializationContext.parse(Deserialization
Context.java:227)
at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnders
tandChecker.java:62)
at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
at org.apache.axis.client.Call.invoke(Call.java:2767)
at org.apache.axis.client.Call.invoke(Call.java:2443)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)
at com.cscinfo.webservice.client.LmsServiceSoapBindingStub.getSOPCountBy
NatureOfCase(Unknown Source)
at com.cscinfo.cscglobal.web.action.EnterCSCGlobalAction.execute(EnterCS
CGlobalAction.java:68)
at org.apache.struts.action.RequestProcessor.processActionPerform(Reques
tProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.ja
va:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:116
4)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run
(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecuri
tyHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.jav
a:283)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:42)
at com.cj.trim.trimFilter.doFilter(Unknown Source)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:42)
at weblogicx.servlet.gzip.filter.GZIPFilter.doFilter(GZIPFilter.java:70)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
n.run(WebAppServletContext.java:3229)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(Authenticate
dSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:
121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppS
ervletContext.java:2002)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletC
ontext.java:1908)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.j
ava:1362)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)

It is working for me. See the following configuration.
<service name="TestService" provider="java:RPC">
     <requestFlow>
          <handler type="soapmonitor"/>
     </requestFlow>
     <responseFlow>
          <handler type="soapmonitor"/>
     </responseFlow>
          <parameter name="allowedMethods" value="*"/>
          <parameter name="className" value="com.xxx.xxx.web.servlet.TestService"/>
          <beanMapping qname="ns:XBeanInfo" xmlns:ns="XBeanInfo" languageSpecificType="java:com.xxx.xxx.web.util.XBeanInfo"/>
     <typeMapping deserializer="org.apache.axis.encoding.ser.BeanDeserializerFactory"
     encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
          qname="myNS:XBeanInfo"
     serializer="org.apache.axis.encoding.ser.BeanSerializerFactory"
          xmlns:myNS="urn:TestService"
          type="java:com.xxx.xxx.web.util.XBeanInfo"/>
</service>

Unable to access Custom UDTs returned from a Java Stored Procedure

Hi,
I have a UDT in the DB :-
create type contactrecord as object (
CN_ID NUMBER(8),
CN_TITLE VARCHAR2(40),
CN_FIRST_NAME VARCHAR2(25)
and this is the corresponding java class ContactDetails.java that maps to this UDT, that I loaded in the Aurora VM.
package package1;
mport java.sql.SQLData;
import java.sql.SQLException;
import java.sql.SQLInput;
import java.sql.SQLOutput;
public class ContactDetails implements SQLData
private String sql_type;
private long CN_ID;
private String CN_TITLE;
private String CN_FIRST_NAME;
public String getSQLTypeName() throws SQLException
return this.sql_type;
//implementation of readSql
public void readSQL(SQLInput stream, String typeName) throws SQLException
sql_type = typeName;
CN_ID = stream.readLong();
CN_TITLE = stream.readString();
CN_FIRST_NAME = stream.readString();
public void writeSQL(SQLOutput stream) throws SQLException
stream.writeLong(CN_ID);
stream.writeString(CN_TITLE);
stream.writeString(CN_FIRST_NAME);
//getters and setters for the class vars go here.....
There is another class A.java that has a java stored procedure/function, which I loaded into the Aurora VM
Here is the class.
package package1;
public class A
public static ContactDetails returnObject(String name )
ContactDetails cd = new ContactDetails();
cd.setCN_ID(1);
cd.setCN_FIRST_NAME(name);
return cd;
Then I declared the call spec for A.returnObject() as
FUNCTION returnObject(name varchar2) return contactrecord
AS LANGUAGE JAVA
NAME 'package1.A.returnObject(java.lang.String) return package1.ContactDetails';
Then I tried to call the function returnObject through JDBC calls from a class in another VM.
When I access the object returned by the function, I get a null object.
Here is the Client code:
CallableStatement cs = null;
ResultSet rs = null;
try
cs = conn.prepareCall("{ ? = call returnObject(?) }");
java.util.Map map = conn.getTypeMap();
map.put("ADMIN.CONTACTRECORD", Class.forName("package1.ContactDetails"));
conn.setTypeMap(map);
cs.registerOutParameter(1, OracleTypes.STRUCT, "ADMIN.CONTACTRECORD");
cs.setString(2, "John Doe" );
cs.execute();
ContactDetails cd = (ContactDetails)cs.getObject(1);
System.out.println("contact first name is:-"+cd.getCN_FIRST_NAME()); //Null Pointer here..cd is null....:(
if (cs != null) cs.close();
catch(Exception e)
e.printStackTrace();
Although If I try to access the same function from a pl/sql block, I am able
to access the contactrecord fields.
What could be wrong ..???
I could not find any error with the object mapping, as it works perfectly when I interact directly from my VM to the DB,
without going thru the aurora VM.
I am using a OCI driver to connect to the DB via JDBC.
Thanx in advance for any help at all.
-sk

Shahid,
I too have had bad luck in many cases with the automatic translation of Java types to PL/SQL and back. I think the SYS package on the PL/SQL side which handles some of the conversion is DBMS_PICKLER (there are equivalent Java classes which do the same in that world and seem to execute automagically when a conversion is needed). You might want to double-check the data type mappings against the DOC on OTN to make sure they map 1-1. Also make sure the permissions are granted against your objects to whoever is executing them, etc. Very often, I've resorted to passing simple scalar types between the two languages as in some cases the results with complex types are inconsistent.
Sorry this isn't much help,
-Dan
http://www.compuware.com/products/devpartner/db/oracle_debug.htm
Debug PL/SQL and Java in the Oracle Database

How can i return a SDO_GEOMETRY value in a Java-Stored-Function?

For a example, Ive got a java-function witch returns a
oracle.sdoapi.geom.Geometry like:
public static Geometry GetQPoint(String sF_TABLE_NAME, long lFID)
And now, Ill try to deploy this function as a PL-SQL stored-function like:
GET_Q_POINT(
F_TABLE_NAME IN VARCHAR2,
FID IN NUMBER
) RETURN MDSYS.SDO_GEOMETRY;
I can't deploy this above mentioned java-function with Oracle9i JDeveloper because oracle.sdoapi.geom.Geometry can not mapped in any PL-SQL data type.
Is there any possibility to do it in a other way?
Please help me.

a quick example that takes as input a longitude and latitude,
and return a point geometry in wgs 84:
CREATE OR REPLACE FUNCTION get_geom (
     longitude IN          NUMBER,
     latitude     IN          NUMBER )
     RETURN mdsys.sdo_geometry
     DETERMINISTIC IS
     BEGIN
RETURN mdsys.sdo_geometry (2001,8307,
          mdsys.sdo_point_type (longitude, latitude, NULL), NULL, NULL );
END;
other pl/sql examples:
REM
REM This function doesn't really do anything, but demonstrates some simple
REM mechanisms on how to manipulate the array portion of the geometry object, and
REM also how to write a function that returns a geometry object.
REM
REM The function demonstrates:
REM 1) .EXTEND (there is also .DELETE)
REM 2) .COUNT
REM 3) Any function that returns an object (including the SDO_GEOMETRY object)
REM should be declared as DETERMINSTIC (see below).
REM
create or replace function create_geometry return mdsys.sdo_geometry deterministic as
temp_geom mdsys.sdo_geometry := mdsys.sdo_geometry (2002, 8307, null,
mdsys.sdo_elem_info_array (1,2,1),
mdsys.sdo_ordinate_array ());
begin
for i in 1 .. 10 loop
temp_geom.sdo_ordinates.extend (2);
temp_geom.sdo_ordinates(temp_geom.sdo_ordinates.count-1) := i;
temp_geom.sdo_ordinates(temp_geom.sdo_ordinates.count) := i+1;
end loop;
return temp_geom;
end;
select create_geometry from dual;
set linesize 80
set pages 1000
drop table TEST_MODIFY;
create table TEST_MODIFY (geom mdsys.sdo_geometry);
insert into TEST_MODIFY values
(mdsys.sdo_geometry (2002, 8307, null,
mdsys.sdo_elem_info_array (1,2,1),
mdsys.sdo_ordinate_array (1,1, 2,2, 3,3, 4,4)));
insert into TEST_MODIFY values
(mdsys.sdo_geometry (2002, 8307, null,
mdsys.sdo_elem_info_array (1,2,1),
mdsys.sdo_ordinate_array (21,21, 22,22, 23,23, 24,24)));
REM
REM Select values before update.
REM
select geom from TEST_MODIFY;
REM
REM This PL*SQL block updates all the ordinates of a geometry by adding 10 to each x value
REM and 20 to each y value.
REM
declare
i NUMBER;
cursor c1 is select geom, rowid
from TEST_MODIFY;
begin
for r in c1 loop
i := 1;
while (i < r.geom.sdo_ordinates.count) loop
r.geom.sdo_ordinates(i) := r.geom.sdo_ordinates(i) + 10;
r.geom.sdo_ordinates(i+1) := r.geom.sdo_ordinates(i+1) + 20;
i := i + 2;
end loop;
update TEST_MODIFY set geom = r.geom where rowid = r.rowid;
end loop;
end;
REM
REM Select values after update.
REM
select geom from TEST_MODIFY;

Return type Boolean From Oracle Function

1. How do I get a return type of Boolean from Oracle function in Java?
2. I have a function fx overloaded in Oracle (8 variances) and I have trouble getting the right one in Java. Is 8 too high a figure or Java does not support calling overloaded functions or what?
Thanks for any help.

I am facing a similar situation, where I have defined an overloaded function in one package (2 variants) which both return a type BOOLAN value.
I am having trouble to setting up an CallableStatemnt to call one of this functions from Java. Whenever I set the parameter with a BIT or NUMBER data type, I get an exception with java.lang.boolean during my
callablestatement.setobject( indez, parameter, OracleTypes.BIT );
or
callablestatement.setobject( indez, parameter, OracleTypes.NUMBER );
I have no problem calling the function from SQLPlus, but doing so from Java raises the exception. I have found no exact match in OracleTypes or java.sql.Types for a BOOLEAN data type.
In your response do you mean to modify the Function to return a NUMBER instead of a BOOLEAN, or do you mean to set the parameter as Types.NUMBER in the calling java code?
Thanks,
Fedro

ORA-29531 when i execute a java stored function

I get the following error when i tried to execute java stored procedure
ORA-29531: no method secondConcat in class secondProcedure
The code below will explain my problem clearly
Java Class:(secondProcedure)
import java.lang.*;
public class secondProcedure
public static String secondConcat(String inStr1, String inStr2, String outStr)
System.out.println("Calling secondProcedure.secondConcat\n");
outStr = inStr1 + inStr2;
String retStr = outStr;
return retStr;
Database Function:(fn_sec_concat)
FUNCTION fn_sec_concat(Str1 IN VARCHAR2, Str2 IN VARCHAR2, Str3 OUT VARCHAR2)
RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'secondProcedure.secondConcat(java.lang.String, java.lang.String, java.lang.String[])
return java.lang.String';
I used loadjava utility to load the java class into database which went fine.
I searched for the error message on the web, & i response i got from everywhere is to add the static attribute to method, which was already there in my code.
Please help!
null

I get the following error when i tried to execute java stored procedure
ORA-29531: no method secondConcat in class secondProcedure
The code below will explain my problem clearly
Java Class:(secondProcedure)
import java.lang.*;
public class secondProcedure
public static String secondConcat(String inStr1, String inStr2, String outStr)
System.out.println("Calling secondProcedure.secondConcat\n");
outStr = inStr1 + inStr2;
String retStr = outStr;
return retStr;
Database Function:(fn_sec_concat)
FUNCTION fn_sec_concat(Str1 IN VARCHAR2, Str2 IN VARCHAR2, Str3 OUT VARCHAR2)
RETURN VARCHAR2
AS LANGUAGE JAVA
NAME 'secondProcedure.secondConcat(java.lang.String, java.lang.String, java.lang.String[])
return java.lang.String';
I used loadjava utility to load the java class into database which went fine.
I searched for the error message on the web, & i response i got from everywhere is to add the static attribute to method, which was already there in my code.
Please help!
null

Recursing through table / complex return types in Java Stored Functions

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