de.zib.scalaris

Class ResultList

java.lang.Object

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

Methods

Modifier and Type	Method and Description
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