Using java user-defined aggregate function

Hello

I'm trying to implement a with Java user-defined aggregate function.

Here's the Code Javaclass:

Import Java.util;
Oracle.sql import. *;
import java.sql. *;
import Java.Math.BigDecimal;
Oracle import. CartridgeServices.*;

stored the context type

public class StoredCtx_SecMax
{
private BigDecimal b_max;
private BigDecimal b_secmax;

public StoredCtx_SecMax()
{
b_max = new BigDecimal (0);
b_secmax = new BigDecimal (0);
}

public void SchreibeMax (entry BigDecimal)
{
b_max = entry;
}

public void SchreibeSecMax (entry BigDecimal)
{
b_secmax = entry;
}

public BigDecimal LeseMax()
{
Return b_max;
}

public BigDecimal LeseSecMax()
{
Return b_secmax;
}
}

implementation type

/ public class SecondMax_j implements SQLData
{
BigDecimal private key;

Ultimate SUCCESS of static BigDecimal = new BigDecimal (0);
Final static BigDecimal ERROR = new BigDecimal (1);

Implement the SQLData interface.

String sql_type;
public String getSQLTypeName() throws SQLException
{
Return sql_type;
}

' Public Sub readSQL (SQLInput stream, string typeName) throws SQLException
{
sql_type = typeName;
key = stream.readBigDecimal ();
}

Public Sub writeSQL (SQLOutput stream) throws SQLException
{
stream.writeBigDecimal (key);
}

methods of the type that implements ODCITable interface

public static BigDecimal ODCIAggregateInitialize (oracle.sql.STRUCT [] sctx)
throws SQLException
{
Connection Conn = DriverManager.getConnection("jdbc:default:connection:");

create a stored environment and store the result set in it
StoredCtx_SecMax ctx = new StoredCtx_SecMax();

context of registry stored with cartridge services
Touch int;
try {}
key = ContextManager.setContext (ctx);
} catch {} (EC CountException)
error return;
}

Create an instance of StockPivotImpl and store the key of
Object [] impAttr = new Object [1];
impAttr [0] = new BigDecimal (key);
StructDescriptor sd = new StructDescriptor ("SECONDMAX_J", conn);
SCTX [0] = new STRUCT(sd,conn,impAttr);

return a SUCCESS;
}

public BigDecimal ODCIAggregateIterate (BigDecimal input)
throws SQLException
{
retrieve the context stored with the key
CTX StoredCtx_SecMax;
try {}
CTX = (StoredCtx_SecMax) ContextManager.GetContext (Key.intValue ());
} catch (InvalidKeyException ik) {}
error return;
}

BigDecimal b_max;
BigDecimal b_secmax;

b_max = ctx. LeseMax();
b_secmax = ctx. LeseSecMax();

If (eingabe.compareTo (b_max) == 1)
{
CTX. SchreibeSecMax (b_max);
CTX. SchreibeMax (input);
}
on the other
{
If (eingabe.compareTo (b_secmax) == 1)
{
CTX. SchreibeSecMax (input);
}
}

return a SUCCESS;
}

public BigDecimal ODCIAggregateTerminate (double [] returnValue, int flags) throws SQLException {}

retrieve the context stored with the key
CTX StoredCtx_SecMax;
try {}
CTX = (StoredCtx_SecMax) ContextManager.clearContext (Key.intValue ());
} catch (InvalidKeyException ik) {}
error return;
}

returnValue [0] = ctx. LeseSecMax () .doubleValue ();

CTX = null;

return a SUCCESS;
}

public BigDecimal ODCIAggregateMerge (oracle.sql.STRUCT ctx2) throws SQLException {}

return a SUCCESS;
}
}

To implement this in the database, I use the following script:

CREATE OR REPLACE TYPE IMPROG. SECONDMAX_J as object

(
INTEGER key,

public static function ODCIAggregateInitialize (sctx IN OUT SECONDMAX_J)

Return number
IN THE JAVA LANGUAGE
NAME "Java.Math.BigDecimal return from SecondMax_j.ODCIAggregateInitialize (oracle.sql.STRUCT []).
,

Member ODCIAggregateIterate (self IN OUT SECONDMAX_J function,

Number return value)
IN THE JAVA LANGUAGE
NAME "Java.Math.BigDecimal SecondMax_j.ODCIAggregateIterate return (Java.Math.BigDecimal).
,

Member ODCIAggregateTerminate (self IN SECONDMAX_J function,

Return returnValue NUMBER, flags in number number)
IN THE JAVA LANGUAGE
NAME "Java.Math.BigDecimal return of SecondMax_j.ODCIAggregateTerminate (double [], int).
,

Member ODCIAggregateMerge (self IN OUT SECONDMAX_J function,

CTX2 IN SECONDMAX_J) return number
IN THE JAVA LANGUAGE
NAME "Java.Math.BigDecimal SecondMax_j.ODCIAggregateMerge return (oracle.sql.STRUCT)".
);
/

CREATE OR REPLACE FUNCTION F_SECONDMAX_J (NUMBER value) RETURN NUMBER

PARALLEL_ENABLE

AGGREGATION to the HELP of SecondMax_j;
/

When I now use the F_SECONDMAX_J function.

"(Columnname) select F_SECONDMAX_J from Tablename t;

It works perfectly and shows me the right result.

Then I tried to implement the fusion part as follows:

public BigDecimal ODCIAggregateMerge (oracle.sql.STRUCT ctx2) throws SQLException {}

BigDecimal Key2 = null;

BigDecimal ctx_max = null;
BigDecimal ctx_secmax = null;

BigDecimal ctx2_max = null;
BigDecimal ctx2_secmax = null;

retrieve the context stored with the key
StoredCtx_SecMax ctx = null;
try {}
CTX = (StoredCtx_SecMax) ContextManager.GetContext (Key.intValue ());
} catch (Exception e) {}

}

Object [] impAttr = ctx2.getAttributes ();

Key2 = (BigDecimal) impAttr [0];

retrieve the second context stored using the key2
StoredCtx_SecMax ctx_sec = null;
try {}
ctx_sec = (StoredCtx_SecMax) ContextManager.GetContext (key2.intValue ());
} catch (Exception e) {}

}

ctx_max = ctx. LeseMax();
ctx_secmax = ctx. LeseSecMax();

ctx2_max = ctx_sec. LeseMax();
ctx2_secmax = ctx_sec. LeseSecMax();

If (ctx2_max.compareTo (ctx_max) == 1)
{
If (ctx2_secmax.compareTo (ctx_secmax) == 1)
{
CTX. SchreibeSecMax (ctx2_secmax);
}
on the other
{
CTX. SchreibeSecMax (ctx_max);
}
CTX. SchreibeMax (ctx2_max);
}
on the other
{
If (ctx2_max.compareTo (ctx_secmax) == 1)
{
CTX. SchreibeSecMax (ctx2_max);
}
}

return a SUCCESS;
}

When I now try the function

"Select / * + parallel (t 4) * / F_SECONDMAX_J (Columnname) of Tablename t;

I always get a pointer NULL-error because the variable key2 is always 0 and therefore the functions LeseMax() and LeseSecMax()
in the second context 'ctx_sec' produce this error NULL pointer.

To me it seems that each parallel process is the construction of an additional class for himself, which is not available are my main process.

My question is now how it is possible to access the context of stored of the parallel process, so that I can combine the results.

Thank you very much

Josef

Hi Josef,

just guess that I've never implemented with java user-defined aggregate functions or support parallel execution:

Maybe you have to implement ODCIAggregateWrapContext?

+ Application of ODCIAggregateWrapContext is optional. It should be implemented only when the external memory is used to hold the aggregative, context and the user-defined aggregate is evaluated in parallel (which is, stated as PARALLEL_ENABLE). If the user-defined aggregate is not evaluated in parallel, ODCIAggregateWrapContext is not necessary. +
[http://docs.oracle.com/cd/B12037_01/appdev.101/b10800/dciaggfns.htm#i1004974]

Report it to progress and success.

Good luck
Rainer Stenzel

Tags: Database

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< return type = "string" / >

< params >

< param name = "StringToFix" type = "string" / >

< param name = "RegX" type = "string" / >

< param name = "replaceString" type = "string" / >

< param name = "mode" type = "string" / >

< / params >

Sets < desc > replaceFirst and replaceAll functions java < / desc >

< detail >

<! [CDATA [this is a custom function.] If you use it, you must include the

Following namespace declaration in your BPEL file.

 

' xmlns:f17 = ' http://ENTP.HUD.gov/customxpath/functions "" "

 

USE: f17:replaceString(String,String,String,String) 

Chain change, regular expression, mode [optional] replace the string - 1 = all, 2 = first by default all the 

See documentation for more details.]] >

< / details >

< / feature >

< / soa-xpath-functions >

None of the answers was * exactly * correct, but they gave me enough information to solve the problem.

To implement what I have to code the functions a bit differently.
- BPEL functions are all the IXpathFunction extension classes.
- Mapper functions are not.
- BPEL functions are each separate classes.
- A single class with a method for each desired function mapper functions.
- BPEL classes outcrop in the config file ext-bpel-xpath-functions-config. XML
- The Mapper class is exposed in the config file ext-Mapper-xpath-functions - config.xml
A BPEL class looks like:
```
public class editCaseNumber implements IXPathFunction {
 public Object call(IXPathContext context, List args) throws XPathFunctionException {
 return docOut;
 }
}
```
A class to map looks like:
```
public class mapperFunctions {
 public static String replaceString(String sIn,String sMat,String sRep,String mode){
 return finalString;
 }
 public static XMLDocumentFragment compressFile(String indoc){
 return docOut;
 }
}
```
(I deleted the code of these to avoid confusion.)

My ext-Mapper-xpath-functions file - config.xml looks like:
```
soa-xpath-functions
 xmlns="http://xmlns.oracle.com/soa/config/xpath"
 xmlns:map="http://www.oracle.com/XSL/Transform/java/com.f17.customfunction.mapperFunctions"
 version="11.1.1"
 resourceBundle="oracle.tip.tools.ide.common.resource.IDEMessageBundle"
 >
 
 com.f17.customfunction.mapperFunctions.compressFile
 
 
 
 
 Compresses large strings for DB storage
 
 

 USE: map:compresFile(string)
 


 Returns XML document fragment containing HEX binary string:

 <compressedFile$gt;[outPut]</compressedFile>
 See documentation for details.]]>
 
 
 
 com.f17.customfunction.mapperFunctions.replaceString
 
 
 
 
 
 
 
 Exposes replaceFirst and replaceAll java functions
 
 

 USE: map:replaceString(String,String,String,String)

 String to edit,

 regular expression,

 replacement string mode

 1 = all

 2 = first occurance

 See documentation for details.]]>
 
 
```

Help! User-defined function problem.
Need help on using custom function defined in Essbase. Thanks in advance!

I have not found a function of depreciation in Essbase, so thought I might create one in Java and save it as a user defined function. However, I can't get this to work.

Here's what I did:
1. I created a java class called depreciation.

public class {depreciation

public double Adeath (double r, int period, double LoanBalance) {}
Double LBound = LoanBalance/period;
Double UBound = LoanBalance;
Double MBound =(LBound+UBound)/2;
Double err = 0;
int i = 0;

Calculate amortization payment
{}
Double MBalance is PVCalc (r, Period, MBound);.
ERR = MBalance-LoanBalance;
If (err > 0) {}
UBound = MBound ;}
If (err < = 0) {}
LBound = MBound ;}
MBound =(UBound+LBound)/2;
i ++ ;
}
While (err > 0.001 | err <-0,001 & & I < = 100);

return (MBound);
}

define the present value
public static double PVCalc (double rate, NPER, double PMT int) {}
Double pvpmt = pmt;
Double cpvpmt = 0;

for (int j = NPM; j > 0; j-) {}
for (int i = 1; i < = j; i ++) {}
pvpmt = pvpmt /(1+rate/12);
}
cpvpmt = cpvpmt + pvpmt;
pvpmt = pmt;
}
Return cpvpmt;
}
}

2. copy the .jar to 'C:\Hyperion\AnalysticServices\java\udf '.
3. has created a new MaxL file and run the script that runs:

create or replace function '@Amortize' as
'Amortization.Amort '.
Spec "@Amortize (spleen, period, balance)"

It shows: statement executed successfully.

4 then I tried to test in the following statement:

If (@isuda ("Time", "Test Date"))
"Depreciation Payment"=@Amortize (0.06, 360, 10000000);
endif;

And I got an error message as below:
Error compiling formula [amortization payment] (line 2): [)] without [()]

Could someone help me with this issue? 1 million thanks!
The udf.policy file is located in the hyperion\products\essbase\essbaseserver\java directory and put the security on the java interface with Essbase points if there is a dev environment you can open the file with Notepad and go to the bottom of it. You will find a line
permission java.security.AllPermission;

remove the / / (which comments out) and this will allow all java functions are allowed. After the change, you must restart the service Essbase

How to create a user-defined function?

is there a substitute for the exe instsrv and srvany in Vista?

I don't know what means your post, so here's how to create a user-defined function:
1) click Start
(2) select "Control Panel".
(3) select "system and maintenance".
4) click on "Administrative Tools".
5) click on "Task Scheduler."
(6) click on "create task" (right in the list pane under) "Actions") "
"(7) opened in the general tab it will choose if it only works when the account that is used to implement is connected, or ' if that user is logged in or not" (leave the box ' do not store the... "empty password)
(8) always in the general tab, check the box 'run with highest privileges '. (This will ensure that no program can block)
(9) type a name for the task (in the general tab)
(10) to set the job to run an awhile, use the "triggers" tab, if you want to set a task runs after xx min. temps_inactivite, choose the 'conditions' tab, then choose the desired time.
(12) click on the 'actions' tab click on 'new '. in the program/script line, search for and select the program you want to run, and then click Open.
13) click OK in the window "create a task".
14) click OK again and you are done.
I hope this helps.

How to use the negation in the user defined rules?

Hello
Can you please show me an example using negation in the rule set by the user? I created a rule like below (the rule says that if a patient has a fever problem and not having penicillin hypersensitivity, then recommend medication1):
INSERT INTO mdsys.semr_myMedicineRB VALUES ('rule1',
' (? p RDF: type: Patient) (? p: present? c1) (? c1 RDF: type: fever) (? c2 RDF: type: Penicillin_Hypersensitivity)',
"(NOT_EXISTS (p: present c2))',
' (? p: recommendation: medication1)',
SEM_ALIASES (SEM_ALIAS (",'http://www.example/medicine#')));
The rule correctly applied in the modules. However, I cannot move to the phase of creation entailment and got errors:
ORA-29532: Java call terminated by eception Java exception: java.sql.SQLException: parameter IN or OUT to missing index: 1
ORA-06512: at the 'MDSYS. SDO_SEM_INF_INTERNAL', line 16453
ORA-06512: at the 'MDSYS. SDO_SEM_INFERENCE', line 302
ORA-06512: at the 'MDSYS. SDO_SEM_INFERENCE', line 352
ORA-06512: at the 'MDSYS. RDF_APIS', line 118
ORA-06512: at line 2
29532 00000 - "Java call terminated by eception Java exception: %s."
* Cause: A mistake or a Java exception has been reported and could not be
solved by Java code.
* Action: Modify Java code, if this behavior is not expected.
According to the post primitives(noValue,remove) integrated for user defined rules, it seems that negation is not supported in rules defined by the user. Can you please advice how to implement the negation in the rules defined by the user? Thank you very much in advance.
Hong

Salvation Hong,

Negation is not supported in rules defined by the user. If you need a work-around, please follow the suggestion in the post you referenced.

If you use Oracle Database Release 12 c, user-defined inference can certainly manage negation.

It will be useful,

Zhe Wu

Using java user-defined aggregate function

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