Package org.exoplatform.services.ispn

Class AbstractMapper<KIn,VIn,KOut,VOut>

java.lang.Object

org.exoplatform.services.ispn.AbstractMapper<KIn,VIn,KOut,VOut>

All Implemented Interfaces:

Serializable, org.infinispan.distexec.mapreduce.Mapper<KIn,VIn,KOut,VOut>

Direct Known Subclasses:

DistributedExoCache.ClearCacheMapper, DistributedExoCache.GetCachedObjectsMapper, DistributedExoCache.GetEntriesMapper, DistributedExoCache.GetSizeMapper

public abstract class AbstractMapper<KIn,VIn,KOut,VOut>
extends Object
implements org.infinispan.distexec.mapreduce.Mapper<KIn,VIn,KOut,VOut>

The main class of all the mappers.

Version:

$Id$

Author:

Nicolas Filotto

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
AbstractMapper()

Method Summary

Modifier and Type	Method	Description
protected abstract void	_map(KIn key, VIn value, org.infinispan.distexec.mapreduce.Collector<KOut,VOut> collector)	This method is in fact an internal mapping, it will be called by the map method in case the given key matches with the context
protected abstract boolean	isValid(KIn key)	Indicates if the given key matches with the current context, indeed as the cache instances are shared it is needed to check each key to know if it is part of the targeted scope or not.
void	map(KIn key, VIn value, org.infinispan.distexec.mapreduce.Collector<KOut,VOut> collector)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMapper

public AbstractMapper()

Method Detail

map

public void map(KIn key,
                VIn value,
                org.infinispan.distexec.mapreduce.Collector<KOut,VOut> collector)

Specified by:

map in interface org.infinispan.distexec.mapreduce.Mapper<KIn,VIn,KOut,VOut>

_map

protected abstract void _map(KIn key,
                             VIn value,
                             org.infinispan.distexec.mapreduce.Collector<KOut,VOut> collector)

This method is in fact an internal mapping, it will be called by the map method in case the given key matches with the context

isValid

protected abstract boolean isValid(KIn key)

Indicates if the given key matches with the current context, indeed as the cache instances are shared it is needed to check each key to know if it is part of the targeted scope or not.

Parameters:

key - the key to check

Returns:

true if the key matches with the scope, false otherwise.