com.hazelcast.map.impl

Class EntryRemovingProcessor

java.lang.Object

com.hazelcast.map.AbstractEntryProcessor

com.hazelcast.map.impl.EntryRemovingProcessor

All Implemented Interfaces:

EntryProcessor, DataSerializable, IdentifiedDataSerializable, Serializable

public class EntryRemovingProcessor
extends AbstractEntryProcessor
implements IdentifiedDataSerializable

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static EntryRemovingProcessor	ENTRY_REMOVING_PROCESSOR

Constructor Summary

Constructors

Constructor and Description
EntryRemovingProcessor()

Method Summary

Modifier and Type	Method and Description
int	getFactoryId() Returns DataSerializableFactory factory ID for this class.
int	getId() Returns type identifier for this class.
Object	process(Map.Entry entry) Process the entry without worrying about concurrency.
void	readData(ObjectDataInput in) Reads fields from the input stream
void	writeData(ObjectDataOutput out) Writes object fields to output stream

Methods inherited from class com.hazelcast.map.AbstractEntryProcessor

getBackupProcessor

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ENTRY_REMOVING_PROCESSOR

public static final EntryRemovingProcessor ENTRY_REMOVING_PROCESSOR

Constructor Detail

EntryRemovingProcessor

public EntryRemovingProcessor()

Method Detail

process

public Object process(Map.Entry entry)

Description copied from interface: EntryProcessor

Process the entry without worrying about concurrency.

Note that to modify an entry by using an EntryProcessor you should explicitly call setValue() method of Map.Entry, for example:

        @Override
        public Object process(Map.Entry entry) {
          Value value = entry.getValue();
          // process and modify value
          // ...
          entry.setValue(value);
          return result;
        }
 

otherwise the EntryProcessor does not guarantee to modify the entry.

The entry's value will be null, if the entry for the key doesn't exist. You can create new mapping by setting a non-null value or remove existing mapping entry by setting the value to null.

Specified by:

process in interface EntryProcessor

Parameters:

entry - entry to be processed

Returns:

a result that will be returned from the method taking the EntryProcessor, such as IMap.executeOnKey()

getFactoryId

public int getFactoryId()

Description copied from interface: IdentifiedDataSerializable

Returns DataSerializableFactory factory ID for this class.

Specified by:

getFactoryId in interface IdentifiedDataSerializable

Returns:

factory ID

getId

public int getId()

Description copied from interface: IdentifiedDataSerializable

Returns type identifier for this class. It should be unique per DataSerializableFactory.

Specified by:

getId in interface IdentifiedDataSerializable

Returns:

type ID

writeData

public void writeData(ObjectDataOutput out)
               throws IOException

Description copied from interface: DataSerializable

Writes object fields to output stream

Specified by:

writeData in interface DataSerializable

Parameters:

out - output

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

readData

public void readData(ObjectDataInput in)
              throws IOException

Description copied from interface: DataSerializable

Reads fields from the input stream

Specified by:

readData in interface DataSerializable

Parameters:

in - input

Throws:

IOException - if an I/O error occurs. In particular, an IOException may be thrown if the input stream has been closed.