org.apache.hadoop.hive.ql.exec.persistence
Class AbstractMapJoinKey

java.lang.Object
  org.apache.hadoop.hive.ql.exec.persistence.AbstractMapJoinKey

All Implemented Interfaces:

Externalizable, Serializable

Direct Known Subclasses:

MapJoinDoubleKeys, MapJoinObjectKey, MapJoinSingleKey

public abstract class AbstractMapJoinKey
extends Object
implements Externalizable

Map Join Object used for both key.

See Also:

Serialized Form

Field Summary

protected static int

metadataTag

Constructor Summary

AbstractMapJoinKey()

Method Summary

abstract boolean	equals(Object o)
abstract boolean	hasAnyNulls(boolean[] nullsafes)
abstract int	hashCode()
abstract void	readExternal(ObjectInput in)
abstract void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

metadataTag

protected static int metadataTag

Constructor Detail

AbstractMapJoinKey

public AbstractMapJoinKey()

Method Detail

equals

public abstract boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public abstract int hashCode()

Overrides:

hashCode in class Object

readExternal

public abstract void readExternal(ObjectInput in)
                           throws IOException,
                                  ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public abstract void writeExternal(ObjectOutput out)
                            throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

hasAnyNulls

public abstract boolean hasAnyNulls(boolean[] nullsafes)