IBM WebSphere Adapters, Руководство пользователя

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the
retriveAll
operation could return
″
N
″
records from the backend application,
for each call to the getNext() method the implementation should fill in data of one
record from the backend application into OutputCursors/Accessors. It should keep
track of which record it needs to do next so in subsequent call to getNext() it can
fill in next record.
This method would be using the eisRepresentation being held on to the Record
instance, this is the backend representation of data which is used in this method to
read fields and set those in Output Cursors and Accessors.
Sample code
For a sample of how to implement the
getNext()
method, refer to the TwineBall
sample.
Clone method
Use this method to copy property values from the record instance to a newly
created instance.
public Object clone ()
Sample
Here is a coding sample on how to implement the Clone method:
public Object clone() {
//Build a new record
TwineBallStructuredRecord record = new TwineBallStructuredRecord();
try{
//Copying property values
record.twineBallConnection = twineBallConnection;
record.objectNaming = objectNaming;
record.objectSerializer = objectSerializer;
record.setEISRepresentation(this.getEISRepresentation());
}catch(Exception e){
throw new RuntimeException(e);
}
return record;
}
Close method
This method provides cleanup for the
getNext method.public void close()
.
Purpose of the close method
Implement this method if you need to release resources/objects after the
getNext()
method has been run.
Sample code
Here is a coding sample showing how to implement the
Close
method:
Extract method
public void extract(String xpath) throws DESPIException What is this method?
Need a short description.
Purpose
This method needs implementation only if an Xpath expression can be used to
retrieve individual field values from backend object representation. This method is
invoked after getNext() is called with boolean value as false.
WebSphere Adapter development overview
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