Convert BLOB from database to string

Question

Hi All,
I have retrieved the blob data from my database , and now i have it in my InvokeVariable. The below details will brief the structure of my output variable.
<variable name="Invoke1_RetrieveRecordForInstanceId_OutputVariable"
messageType="*ns1:RetrieveRecordForInstanceIdOutputCollection_msg*"/>
<wsdl:message name="RetrieveRecordForInstanceIdOutputCollection_msg">
<wsdl:part name="RetrieveRecordForInstanceIdOutputCollection" element="db:RetrieveRecordForInstanceIdOutputCollection"/>
</wsdl:message>
<xs:complexType name="RetrieveRecordForInstanceIdOutputCollection">
<xs:sequence>
<xs:element name="RetrieveRecordForInstanceIdOutput" type="RetrieveRecordForInstanceIdOutput" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="RetrieveRecordForInstanceIdOutput">
<xs:sequence>
<xs:element name="INSTANCE_ID" type="xs:decimal" nillable="true"/>
<xs:element name="SOURCE_XML" type="xs:base64Binary" nillable="true"/>
<xs:element name="TARGET_XML" type="xs:base64Binary" nillable="true"/>
</xs:sequence>
</xs:complexType>
I make my assign statement like below.
<assign name="Assign2">
<copy>
<from variable="Invoke1_RetrieveRecordForInstanceId_OutputVariable"
part="RetrieveRecordForInstanceIdOutputCollection"
query="/ns2:RetrieveRecordForInstanceIdOutputCollection/ns2:RetrieveRecordForInstanceIdOutput/ns2:SOURCE_XML"/>
<to variable="EnhancedBLOBdata"/>
</copy>
</assign>
I have my java code for converting the blob to string as below.
String input = (String)getVariableData("*EnhancedBLOBdata*");
Base64Decoder baseDecoder= new Base64Decoder();
try {            
byte[] decodedBytes = input.getBytes();
String decoded = new String(decodedBytes);
//String decoded = Base64Decoder.decode(input);
setVariableData("DecodedString", decoded);
catch(Exception ex)
ex.printStackTrace();
The data type of EnhancedBLOBdata is base64Binary.. I also checked with 'string' . Even then i dint get the proper decoded form.
Can anyone help me in using the variable SOURCE_XML coming under the RetrieveRecordForInstanceIdOutputCollection, directly in the line,
String input = (String)getVariableData("*Invoke_Output_Variable....<some format>*");
so that there is no need of assigning to some other variable.. Bcz while assignig i am not sure, the assigned variable contains data in blob format.
Kindly help me in this regard.
Thanks,
Sabarisri. N

Answer 1

I have figured out the error happens on a data picture with about 700KB of data all of the other data fields have less than 100KB. Is there a way around this size issue.