de.zib.scalaris
Class ResultList

java.lang.Object
  extended by de.zib.scalaris.ResultList
Direct Known Subclasses:
Transaction.ResultList, TransactionSingleOp.ResultList

public abstract class ResultList
extends Object

Generic result list.

Since:
3.5
Version:
3.8
Author:
Nico Kruber, kruber@zib.de

Method Summary
 Operation get(int index)
          Returns the operation at the specified position for e.g.
abstract  void processAddDelOnListAt(int pos)
          Processes the result at the given position which originated from a add_del_on_list request.
abstract  void processAddOnNrAt(int pos)
          Processes the result at the given position which originated from an add_on_nr request.
 ErlangValue processReadAt(int pos)
          Processes the result at the given position which originated from a read request and returns the value that has been read.
abstract  void processTestAndSetAt(int pos)
          Processes the result at the given position which originated from a test_and_set request.
abstract  void processWriteAt(int pos)
          Processes the result at the given position which originated from a write request.
 int size()
          Gets the number of results in the list.
 String toString()
           
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Method Detail

size

public int size()
Gets the number of results in the list.

Returns:
total number of results

get

public Operation get(int index)
Returns the operation at the specified position for e.g. further result processing.

Parameters:
index - index of the operation/result to return
Returns:
the operation at the specified position
Throws:
IndexOutOfBoundsException - if the index is out of range ( index < 0 || index >= size())
Since:
3.18

processReadAt

public ErlangValue processReadAt(int pos)
                          throws NotFoundException,
                                 UnknownException
Processes the result at the given position which originated from a read request and returns the value that has been read.

Parameters:
pos - the position in the result list (starting at 0)
Returns:
the stored value
Throws:
NotFoundException - if the requested key does not exist
UnknownException - if any other error occurs
Since:
3.13

processWriteAt

public abstract void processWriteAt(int pos)
                             throws AbortException,
                                    UnknownException
Processes the result at the given position which originated from a write request.

Parameters:
pos - the position in the result list (starting at 0)
Throws:
AbortException - if the commit of the write failed (if there was a commit)
UnknownException - if any other error occurs
Since:
3.13

processAddDelOnListAt

public abstract void processAddDelOnListAt(int pos)
                                    throws NotAListException,
                                           AbortException,
                                           UnknownException
Processes the result at the given position which originated from a add_del_on_list request.

Parameters:
pos - the position in the result list (starting at 0)
Throws:
NotAListException - if the previously stored value was no list
AbortException - if the commit of the write failed (if there was a commit)
UnknownException - if any other error occurs
Since:
3.13

processAddOnNrAt

public abstract void processAddOnNrAt(int pos)
                               throws NotANumberException,
                                      AbortException,
                                      UnknownException
Processes the result at the given position which originated from an add_on_nr request.

Parameters:
pos - the position in the result list (starting at 0)
Throws:
NotANumberException - if the previously stored value was not a number
AbortException - if the commit of the write failed (if there was a commit)
UnknownException - if any other error occurs
Since:
3.13

processTestAndSetAt

public abstract void processTestAndSetAt(int pos)
                                  throws NotFoundException,
                                         KeyChangedException,
                                         AbortException,
                                         UnknownException
Processes the result at the given position which originated from a test_and_set request.

Parameters:
pos - the position in the result list (starting at 0)
Throws:
NotFoundException - if the requested key does not exist
KeyChangedException - if the key did not match old_value
AbortException - if the commit of the write failed (if there was a commit)
UnknownException - if any other error occurs
Since:
3.13

toString

public String toString()
Overrides:
toString in class Object