de.zib.scalaris
Class RequestList

java.lang.Object
  de.zib.scalaris.RequestList

Direct Known Subclasses:

Transaction.RequestList, TransactionSingleOp.RequestList

public abstract class RequestList
extends Object

Generic request list.

Since:

3.5

Version:

3.18

Author:

Nico Kruber, kruber@zib.de

Method Summary

RequestList	addAddDelOnList(OtpErlangString key, OtpErlangList toAdd, OtpErlangList toRemove) Deprecated.
<T> RequestList	addAddDelOnList(String key, List<T> toAdd, List<T> toRemove) Deprecated.
RequestList	addAddOnNr(OtpErlangString key, OtpErlangDouble toAdd) Deprecated.
RequestList	addAddOnNr(OtpErlangString key, OtpErlangLong toAdd) Deprecated.
RequestList	addAddOnNr(String key, Double toAdd) Deprecated.
<T extends Number> RequestList	addAddOnNr(String key, T toAdd) Deprecated.
RequestList	addCommit() Adds a commit operation to the list of requests.
RequestList	addOp(Operation op) Adds a generic operation to the list of requests.
RequestList	addRead(OtpErlangString key) Deprecated.
RequestList	addRead(String key) Deprecated.
RequestList	addTestAndSet(OtpErlangString key, OtpErlangObject oldValue, OtpErlangObject newValue) Deprecated.
<OldT,NewT> RequestList	addTestAndSet(String key, OldT oldValue, NewT newValue) Deprecated.
RequestList	addWrite(OtpErlangString key, OtpErlangObject value) Deprecated.
<T> RequestList	addWrite(String key, T value) Deprecated.
CommitOp	getCommit() Returns the commit operation (if present).
List<Operation>	getRequests() Gets all operations of the request list.
boolean	isCommit() Returns whether the transactions contains a commit or not.
boolean	isEmpty() Checks whether the request list is empty.
int	size() Gets the number of requests in the list.
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

addOp

public RequestList addOp(Operation op)
                  throws UnsupportedOperationException

Adds a generic operation to the list of requests.

Parameters:

op - the operation to add

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

addRead

@Deprecated
public RequestList addRead(OtpErlangString key)
                    throws UnsupportedOperationException

Deprecated.

Adds a read operation to the list of requests.

Parameters:

key - the key to read

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

addRead

@Deprecated
public RequestList addRead(String key)
                    throws UnsupportedOperationException

Deprecated.

Adds a read operation to the list of requests.

Parameters:

key - the key to read

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

addWrite

@Deprecated
public RequestList addWrite(OtpErlangString key,
                                       OtpErlangObject value)
                     throws UnsupportedOperationException

Deprecated.

Adds a write operation to the list of requests.

Parameters:

key - the key to write the value to

value - the value to write

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

addWrite

@Deprecated
public <T> RequestList addWrite(String key,
                                           T value)
                     throws UnsupportedOperationException

Deprecated.

Adds a write operation to the list of requests.

Type Parameters:

T - type of the value to write

Parameters:

key - the key to write the value to

value - the value to write

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

addAddDelOnList

@Deprecated
public RequestList addAddDelOnList(OtpErlangString key,
                                              OtpErlangList toAdd,
                                              OtpErlangList toRemove)
                            throws UnsupportedOperationException

Deprecated.

Adds a add_del_on_list operation to the list of requests.

Parameters:

key - the key to write the value to

toAdd - a list of values to add to a list

toRemove - a list of values to remove from a list

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.9

addAddDelOnList

@Deprecated
public <T> RequestList addAddDelOnList(String key,
                                                  List<T> toAdd,
                                                  List<T> toRemove)
                            throws UnsupportedOperationException

Deprecated.

Adds a add_del_on_list operation to the list of requests.

Type Parameters:

T - type of the value to write

Parameters:

key - the key to write the value to

toAdd - a list of values to add to a list

toRemove - a list of values to remove from a list

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.9

addAddOnNr

@Deprecated
public RequestList addAddOnNr(OtpErlangString key,
                                         OtpErlangLong toAdd)
                       throws UnsupportedOperationException

Deprecated.

Adds an add_on_nr operation to the list of requests.

Parameters:

key - the key to write the value to

toAdd - the number to add to the number stored at key

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.9

addAddOnNr

@Deprecated
public RequestList addAddOnNr(OtpErlangString key,
                                         OtpErlangDouble toAdd)
                       throws UnsupportedOperationException

Deprecated.

Adds an add_on_nr operation to the list of requests.

Parameters:

key - the key to write the value to

toAdd - the number to add to the number stored at key

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.9

addAddOnNr

@Deprecated
public <T extends Number> RequestList addAddOnNr(String key,
                                                            T toAdd)
                       throws UnsupportedOperationException

Deprecated.

Adds an add_on_nr operation to the list of requests.

Type Parameters:

T - type of the value to write; WARNING: the actual supported types only include Integer, Long, BigInteger and Double - see ErlangValue.convertToErlang(Object).

Parameters:

key - the key to write the value to

toAdd - the number to add to the number stored at key

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.9

addAddOnNr

@Deprecated
public RequestList addAddOnNr(String key,
                                         Double toAdd)
                       throws UnsupportedOperationException

Deprecated.

Adds an add_on_nr operation to the list of requests.

Parameters:

key - the key to write the value to

toAdd - the number to add to the number stored at key

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.9

addTestAndSet

@Deprecated
public RequestList addTestAndSet(OtpErlangString key,
                                            OtpErlangObject oldValue,
                                            OtpErlangObject newValue)
                          throws UnsupportedOperationException

Deprecated.

Adds a test_and_set operation to the list of requests (newValue is only written if the currently stored value is oldValue).

Parameters:

key - the key to write the value to

oldValue - the old value to verify

newValue - the new value to write of oldValue is correct

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.8

addTestAndSet

@Deprecated
public <OldT,NewT> RequestList addTestAndSet(String key,
                                                        OldT oldValue,
                                                        NewT newValue)
                          throws UnsupportedOperationException

Deprecated.

Adds a test_and_set operation to the list of requests (newValue is only written if the currently stored value is oldValue).

Type Parameters:

OldT - the type of the stored (old) value. See ErlangValue for a list of supported types.

NewT - the type of the (new) value to store. See ErlangValue for a list of supported types.

Parameters:

key - the key to write the value to

oldValue - the old value to verify

newValue - the new value to write of oldValue is correct

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

Since:

3.8

addCommit

public RequestList addCommit()
                      throws UnsupportedOperationException

Adds a commit operation to the list of requests.

Returns:

this RequestList object

Throws:

UnsupportedOperationException - if the operation is unsupported, e.g. there may only be one "commit" in a request list and no request after that

isCommit

public boolean isCommit()

Returns whether the transactions contains a commit or not.

Returns:

true if the operation contains a commit, false otherwise

getCommit

public CommitOp getCommit()

Returns the commit operation (if present).

Returns:

the commit operation or null if there is none

isEmpty

public boolean isEmpty()

Checks whether the request list is empty.

Returns:

true is empty, false otherwise

size

public int size()

Gets the number of requests in the list.

Returns:

number of requests

getRequests

public List<Operation> getRequests()

Gets all operations of the request list.

Returns:

the requests

Since:

3.14

toString

public String toString()

Overrides:

toString in class Object