com.bigdata.relation.rule
Class Slice

java.lang.Object
  com.bigdata.relation.rule.Slice

All Implemented Interfaces:

ISlice, Externalizable, Serializable

public class Slice
extends Object
implements ISlice, Externalizable

Default implementation.

Version:

$Id: Slice.java 3509 2010-09-05 18:16:01Z thompsonbry $

Author:

Bryan Thompson

See Also:

Serialized Form

Field Summary

static ISlice

ALL A slice corresponding to all results (offset is zero, limit is Long.MAX_VALUE).

Constructor Summary

Slice(long offset, long limit)

Method Summary

long	getLast() The index of the last solution that we will generate (OFFSET + LIMIT).
long	getLimit() The maximum #of solutions to be returned to the caller.
long	getOffset() The first solution to be returned to the caller.
void	readExternal(ObjectInput in)
String	toString()
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

ALL

public static final transient ISlice ALL

A slice corresponding to all results (offset is zero, limit is Long.MAX_VALUE).

Constructor Detail

Slice

public Slice(long offset,
             long limit)

Parameters:

offset -

limit -

Throws:

IllegalArgumentException - if offset is negative.

IllegalArgumentException - if limit is non-positive.

Method Detail

getOffset

public long getOffset()

Description copied from interface: ISlice

The first solution to be returned to the caller. A value of ZERO (0) indicates that all solutions should be returned.

Specified by:

getOffset in interface ISlice

getLimit

public long getLimit()

Description copied from interface: ISlice

The maximum #of solutions to be returned to the caller. A value of Long.MAX_VALUE indicates that there is no limit.

Specified by:

getLimit in interface ISlice

getLast

public long getLast()

Description copied from interface: ISlice

The index of the last solution that we will generate (OFFSET + LIMIT). If OFFSET + LIMIT would be greater than Long.MAX_VALUE, then use Long.MAX_VALUE instead.

Specified by:

getLast in interface ISlice

toString

public String toString()

Overrides:

toString in class Object

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException