public class ReplaceCommand extends AbstractDataWriteCommand
Modifier and Type | Field and Description |
---|---|
static byte |
COMMAND_ID |
key
flags
Constructor and Description |
---|
ReplaceCommand() |
ReplaceCommand(Object key,
Object oldValue,
Object newValue,
CacheNotifier notifier,
long lifespanMillis,
long maxIdleTimeMillis,
Set<Flag> flags) |
Modifier and Type | Method and Description |
---|---|
Object |
acceptVisitor(InvocationContext ctx,
Visitor visitor)
Accept a visitor, and return the result of accepting this visitor.
|
boolean |
equals(Object o) |
byte |
getCommandId()
Used by marshallers to convert this command into an id for streaming.
|
long |
getLifespanMillis() |
long |
getMaxIdleTimeMillis() |
Object |
getNewValue() |
Object |
getOldValue() |
Object[] |
getParameters()
Used by marshallers to stream this command across a network
|
int |
hashCode() |
void |
init(CacheNotifier notifier) |
boolean |
isConditional()
Certain commands only work based on a certain condition or state of the cache.
|
boolean |
isIgnorePreviousValue()
Only relevant for conditional commands.
|
boolean |
isSuccessful()
Some commands may want to provide information on whether the command was successful or not.
|
Object |
perform(InvocationContext ctx)
Performs the primary function of the command.
|
void |
setIgnorePreviousValue(boolean ignorePreviousValue)
Only relevant for conditional commands.
|
void |
setNewValue(Object newValue) |
void |
setOldValue(Object oldValue) |
void |
setParameters(int commandId,
Object[] parameters)
Used by the
CommandsFactory to create a command from raw data read off a stream. |
String |
toString() |
getAffectedKeys, isReturnValueExpected
getKey, ignoreCommandOnStatus, setKey, shouldInvoke
getFlags, getTopologyId, hasFlag, setFlags, setFlags, setTopologyId
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
getFlags, hasFlag, setFlags, setFlags
ignoreCommandOnStatus, shouldInvoke
getTopologyId, setTopologyId
getKey
public static final byte COMMAND_ID
public void init(CacheNotifier notifier)
public Object acceptVisitor(InvocationContext ctx, Visitor visitor) throws Throwable
VisitableCommand
ctx
- invocation contextvisitor
- visitor to acceptThrowable
- in the event of problemspublic Object perform(InvocationContext ctx) throws Throwable
ReplicableCommand
ctx
- invocation contextThrowable
- in the event of problems.public byte getCommandId()
ReplicableCommand
public Object[] getParameters()
ReplicableCommand
getParameters
in interface ReplicableCommand
getParameters
in class AbstractDataCommand
public void setParameters(int commandId, Object[] parameters)
ReplicableCommand
CommandsFactory
to create a command from raw data read off a stream.setParameters
in interface ReplicableCommand
setParameters
in class AbstractDataCommand
commandId
- command id to set. This is usually unused but *could* be used in the event of a command having
multiple IDs, such as PutKeyValueCommand
.parameters
- object array of argspublic boolean equals(Object o)
equals
in class AbstractDataCommand
public int hashCode()
hashCode
in class AbstractDataCommand
public boolean isSuccessful()
WriteCommand
public boolean isConditional()
WriteCommand
ConcurrentMap.putIfAbsent(Object, Object)
only does anything if a condition is met, i.e., the entry in
question is not already present. This method tests whether the command in question is conditional or not.public long getLifespanMillis()
public long getMaxIdleTimeMillis()
public Object getOldValue()
public void setOldValue(Object oldValue)
public Object getNewValue()
public void setNewValue(Object newValue)
public boolean isIgnorePreviousValue()
WriteCommand
true
if the command isn't really conditional, because the previous value was already checked
- either on the originator (tx) or on the primary owner (non-tx).public void setIgnorePreviousValue(boolean ignorePreviousValue)
WriteCommand
ignorePreviousValue
- true
if the command isn't really conditional, because the previous value
was already checked - either on the originator (tx) or on the primary owner (non-tx).public String toString()
toString
in class AbstractDataCommand
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