Convert BLOB from database to XML. - *URGENT*

Question

Hi,
I have converted xml data into BLOB object and inserted into database.
Now when I retrieve the BLOB object,from my DB, using DBadapter, in the invokeOutputVariable, i have the following. This i copied from the 'Flow Trace'
<Invoke1_GetSourceXML_OutputVariable>
<part name="GetSourceXMLOutputCollection" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<GetSourceXMLOutputCollection xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.oracle.com/pcbpel/adapter/db/GetSourceXML">
<GetSourceXMLOutput>
<INSTANCE_ID>1</INSTANCE_ID>
*<SOURCE_XML>weblogic.jdbc.wrapper.Blob_oracle_sql_BLOB@78f9a</SOURCE_XML>*
<TARGET_XML xsi:nil="true"/>
<ORDER_ID>1</ORDER_ID>
<TASK_INSTANCE_ID>1</TASK_INSTANCE_ID>
<ORDER_DATE xsi:nil="true"/>
<TRANSLATION_TYP_CD xsi:nil="true"/>
<EBM_ID>1</EBM_ID>
<STATUS xsi:nil="true"/>
<STATUS_DETAIL xsi:nil="true"/>
</GetSourceXMLOutput>
</GetSourceXMLOutputCollection>
</part>
</Invoke1_GetSourceXML_OutputVariable>
1) Here i want to confirm, whether we l get weblogic.jdbc.wrapper.Blob_oracle_sql_BLOB@78f9a sort of value when we retrieve a BLOB object.
2) Variable declaration is like below.
<variable name="binaryXML" type="xsd:string"/>
<variable name="decodedString" type="xsd:string"/>
binaryXML - value assignment_
<assign name="Assign2">
<copy>
<from variable="Invoke1_GetSourceXML_OutputVariable"
part="GetSourceXMLOutputCollection"
query="/ns2:GetSourceXMLOutputCollection/ns2:GetSourceXMLOutput/ns2:*SOURCE_XML*"/>
<to variable="binaryXML"/>
</copy>
</assign>
I have written java embedding code for converting this BLOB to  xml as below
String input = (String)getVariableData("binaryXML");
try
/* *** INITIALLY I TRIED LIKE THIS*** */
//byte[] decodedBytes = Base64Decoder.decode(input.getBytes());
//String decoded = new String(decodedBytes);
//setVariableData("decodedString",decoded);
/* *** MY NEW CODE *** /
String decoded = Base64Decoder.decode(input);
setVariableData("decodedString",decoded);
catch(Exception ex)
ex.printStackTrace();
My Doubt
When I try to write this 'decodedString' to a .txt file, I couldnt find any output there.
<assign name="Assign3">
<copy>
<from variable="decodedString"/>
<to variable="Invoke2_Write_InputVariable" part="body"
query="/ns4:Root/ns4:C1"/>
</copy>
</assign>
Regarding the schema for the file to be written, i tried with 'opaque' schema.. I dint work. Later i tried with the schema as below (which is comma delimited)
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:nxsd="http://xmlns.oracle.com/pcbpel/nxsd"
xmlns:tns="http://TargetNamespace.com/WriteToFile"
targetNamespace="http://TargetNamespace.com/WriteToFile"
elementFormDefault="qualified"
attributeFormDefault="unqualified"
nxsd:version="NXSD"
nxsd:stream="chars"
nxsd:encoding="US-ASCII"
>
<xsd:element name="Root">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="C1" type="xsd:string" nxsd:style="terminated" nxsd:terminatedBy="," nxsd:quotedBy="&quot;" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
Kindly help me in ths regard.
Thanks,
Sabarisri. N
Edited by: Sabarisri N on Jul 22, 2011 2:37 PM

Answer 1

Read this :
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14252/adx_j_xsu.htm#sthref508