ODSI service using function from oracle database

Question

Hi ,
I need to create a ODSI service using function from oracle database.
I am not sure how to create a Physical Layer and Logical Layer using the function fron db.
Kindly provide a sample . I need It ASAP. Thanks in advance.
Regards,
Tara

Answer 1

Here's what you do.
Create New Physical Data Service -> Relational -> MyDataSource -> Table -> SomeTable ... finish the wizard.
So now you have a Physical Data Service that represents a database table.
Create New Physcial Data Service -> Relational -> MyDataSource (the same one as above) -> Database Function -> Enter UPPER for the Function name, enter MyUpper fro the XQuery Function. Finish the Wizard (use something like MyUpperDs for the ds name).
Open MyUpperDs. Right-click -> Edit Signature on MyUpper. Change the ReturnType to string, change the Occurrence to Zero or One.
Add a parameter, change the Type to string, change the Occurrence to Zero or One.
Save.
Now, open the first ds you made SomeTable.ds (whatever). Run it in the test view.
Go to the Overview tab. Create New Operation. Give it the name SOMETABLE_UPPER. Save it.
Go to the Query Map tab, open SOMETABLE_UPPER. Drag and drop SOMETABLE (the system-generated function into the mapper. It will show a dotted line from SOMETABLE to the Return. Now drag-and-drop the SOMETABLE to the top-level element of the return type, it will show solid lines from each element in SOMETABLE to each element in the return type.
Now, drag-and-drop MyUpperDs.MyUpper into the Query Mapper. Edit the source, find where it added the line "for $x in myd:MyUpper()" and delete that line.
Change a line that simply returns a value to use your function, for example, change
<FIRST_NAME>{fn:data($CUSTOMER/FIRST_NAME)}</FIRST_NAME>
to
<FIRST_NAME>{myd:MyUpper(fn:data($CUSTOMER/FIRST_NAME))}</FIRST_NAME>
Click on the Plan tab and Show Query Plan. You will see that in the query plan, it is using the database UPPER function where you specified MyUpper.
Go to the Test View and run it.
I used the RTLCUSTOMER table in cgDataSource
xquery version "1.0" encoding "UTF-8";
(::pragma xds <x:xds xmlns:x="urn:annotations.ld.bea.com" targetType="t:CUSTOMER" xmlns:t="ld:physical/CUSTOMER">
<creationDate>2010-10-14T13:09:54</creationDate>
<relationalDB name="cgDataSource" providerId="Pointbase"/>
<field xpath="CUSTOMER_ID" type="xs:string">
<extension nativeXpath="CUSTOMER_ID" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="32" nativeFractionalDigits="0" nativeKey="true"/>
<properties nullable="false"/>
</field>
<field xpath="FIRST_NAME" type="xs:string">
<extension nativeXpath="FIRST_NAME" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="64" nativeFractionalDigits="0"/>
<properties nullable="false"/>
</field>
<field xpath="LAST_NAME" type="xs:string">
<extension nativeXpath="LAST_NAME" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="64" nativeFractionalDigits="0"/>
<properties nullable="false"/>
</field>
<field xpath="CUSTOMER_SINCE" type="xs:date">
<extension nativeXpath="CUSTOMER_SINCE" nativeTypeCode="91" nativeType="DATE" nativeSize="10" nativeFractionalDigits="0"/>
<properties nullable="false"/>
</field>
<field xpath="EMAIL_ADDRESS" type="xs:string">
<extension nativeXpath="EMAIL_ADDRESS" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="32" nativeFractionalDigits="0"/>
<properties nullable="false"/>
</field>
<field xpath="TELEPHONE_NUMBER" type="xs:string">
<extension nativeXpath="TELEPHONE_NUMBER" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="32" nativeFractionalDigits="0"/>
<properties nullable="false"/>
</field>
<field xpath="SSN" type="xs:string">
<extension nativeXpath="SSN" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="16" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<field xpath="BIRTH_DAY" type="xs:date">
<extension nativeXpath="BIRTH_DAY" nativeTypeCode="91" nativeType="DATE" nativeSize="10" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<field xpath="DEFAULT_SHIP_METHOD" type="xs:string">
<extension nativeXpath="DEFAULT_SHIP_METHOD" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="16" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<field xpath="EMAIL_NOTIFICATION" type="xs:short">
<extension nativeXpath="EMAIL_NOTIFICATION" nativeTypeCode="5" nativeType="SMALLINT" nativeSize="5" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<field xpath="NEWS_LETTTER" type="xs:short">
<extension nativeXpath="NEWS_LETTTER" nativeTypeCode="5" nativeType="SMALLINT" nativeSize="5" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<field xpath="ONLINE_STATEMENT" type="xs:short">
<extension nativeXpath="ONLINE_STATEMENT" nativeTypeCode="5" nativeType="SMALLINT" nativeSize="5" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<field xpath="LOGIN_ID" type="xs:string">
<extension nativeXpath="LOGIN_ID" nativeTypeCode="12" nativeType="VARCHAR" nativeSize="50" nativeFractionalDigits="0"/>
<properties nullable="true"/>
</field>
<key name="CUSTOMER_0_SYSTEMNAMEDCONSTRAINT__PRIMARYKEY" type="cus:CUSTOMER_KEY" inferredSchema="true" xmlns:cus="ld:physical/CUSTOMER"/>
</x:xds>::)
declare namespace myd= "ld:physical/MyDs";
declare namespace f1 = "ld:physical/CUSTOMER";
import schema namespace t1 = "ld:physical/CUSTOMER" at "ld:physical/schemas/CUSTOMER.xsd";
import schema "ld:physical/CUSTOMER" at "ld:physical/schemas/CUSTOMER_KEY.xsd";
(::pragma function <f:function xmlns:f="urn:annotations.ld.bea.com" visibility="public" kind="read" isPrimary="false" nativeName="CUSTOMER" nativeLevel2Container="RTLCUSTOMER" style="table">
<nonCacheable/> </f:function>::)
declare function f1:CUSTOMER() as schema-element(t1:CUSTOMER)* external;
(::pragma function <f:function xmlns:f="urn:annotations.ld.bea.com" visibility="public" kind="create" isPrimary="true" nativeName="CUSTOMER" nativeLevel2Container="RTLCUSTOMER" style="table">
<nonCacheable/> </f:function>::)
declare procedure f1:createCUSTOMER($p as element(t1:CUSTOMER)*)as schema-element(t1:CUSTOMER_KEY)* external;
(::pragma function <f:function xmlns:f="urn:annotations.ld.bea.com" visibility="public" kind="update" isPrimary="true" nativeName="CUSTOMER" nativeLevel2Container="RTLCUSTOMER" style="table">
<nonCacheable/> </f:function>::)
declare procedure f1:updateCUSTOMER($p as changed-element(t1:CUSTOMER)*) as empty() external;
(::pragma function <f:function xmlns:f="urn:annotations.ld.bea.com" visibility="public" kind="delete" isPrimary="true" nativeName="CUSTOMER" nativeLevel2Container="RTLCUSTOMER" style="table">
<nonCacheable/> </f:function>::)
declare procedure f1:deleteCUSTOMER($p as element(t1:CUSTOMER)*) as empty() external;
(::pragma function <f:function kind="read" visibility="public" isPrimary="false" xmlns:f="urn:annotations.ld.bea.com"/>::)
declare function f1:CUSTOMER_UPPER() as element(f1:CUSTOMER)*{
for $CUSTOMER in f1:CUSTOMER()
return
<t1:CUSTOMER>
<CUSTOMER_ID>{fn:data($CUSTOMER/CUSTOMER_ID)}</CUSTOMER_ID>
<FIRST_NAME>{myd:MyUpper(fn:data($CUSTOMER/FIRST_NAME))}</FIRST_NAME>
<LAST_NAME>{fn:data($CUSTOMER/LAST_NAME)}</LAST_NAME>
<CUSTOMER_SINCE>{fn:data($CUSTOMER/CUSTOMER_SINCE)}</CUSTOMER_SINCE>
<EMAIL_ADDRESS>{fn:data($CUSTOMER/EMAIL_ADDRESS)}</EMAIL_ADDRESS>
<TELEPHONE_NUMBER>{fn:data($CUSTOMER/TELEPHONE_NUMBER)}</TELEPHONE_NUMBER>
<SSN?>{fn:data($CUSTOMER/SSN)}</SSN>
<BIRTH_DAY?>{fn:data($CUSTOMER/BIRTH_DAY)}</BIRTH_DAY>
<DEFAULT_SHIP_METHOD?>{fn:data($CUSTOMER/DEFAULT_SHIP_METHOD)}</DEFAULT_SHIP_METHOD>
<EMAIL_NOTIFICATION?>{fn:data($CUSTOMER/EMAIL_NOTIFICATION)}</EMAIL_NOTIFICATION>
<NEWS_LETTTER?>{fn:data($CUSTOMER/NEWS_LETTTER)}</NEWS_LETTTER>
<ONLINE_STATEMENT?>{fn:data($CUSTOMER/ONLINE_STATEMENT)}</ONLINE_STATEMENT>
<LOGIN_ID?>{fn:data($CUSTOMER/LOGIN_ID)}</LOGIN_ID>
</t1:CUSTOMER>
xquery version "1.0" encoding "UTF-8";
(::pragma xfl <x:xfl xmlns:x="urn:annotations.ld.bea.com">
<creationDate>2010-10-14T13:10:45</creationDate>
<customNativeFunctions>
<relational>
<dataSource>cgDataSource</dataSource>
</relational>
</customNativeFunctions>
</x:xfl>::)
declare namespace f1 = "ld:physical/MyDs";
(::pragma function <f:function visibility="protected" kind="library" isPrimary="false" nativeName="UPPER" xmlns:f="urn:annotations.ld.bea.com">
<nonCacheable/>
</f:function>::)
declare function f1:MyUpper($arg0 as xs:string?) as xs:string? external;
<cus:CUSTOMER xmlns:cus="ld:physical/CUSTOMER">
<CUSTOMER_ID>CUSTOMER1</CUSTOMER_ID>
<FIRST_NAME>JACK</FIRST_NAME>
<LAST_NAME>Black</LAST_NAME>
<CUSTOMER_SINCE>2001-10-01</CUSTOMER_SINCE>
<EMAIL_ADDRESS>[email protected]</EMAIL_ADDRESS>
<TELEPHONE_NUMBER>2145134119</TELEPHONE_NUMBER>
<SSN>295-13-4119</SSN>
<BIRTH_DAY>1970-01-01</BIRTH_DAY>
<DEFAULT_SHIP_METHOD>AIR</DEFAULT_SHIP_METHOD>
<EMAIL_NOTIFICATION>1</EMAIL_NOTIFICATION>
<NEWS_LETTTER>0</NEWS_LETTTER>
<ONLINE_STATEMENT>1</ONLINE_STATEMENT>
</cus:CUSTOMER>
.