com.bigdata.btree.keys
Class DelegateSortKeyBuilder<E,F>

java.lang.Object
  com.bigdata.btree.keys.DelegateSortKeyBuilder<E,F>

Type Parameters:

E - The generic type of the object to which this builder will be applied.

F - The generic type of the object whose sort keys the delegate can generate.

All Implemented Interfaces:

ISortKeyBuilder<E>

public abstract class DelegateSortKeyBuilder<E,F>
extends Object
implements ISortKeyBuilder<E>

Delegation pattern for ISortKeyBuilder that is useful when you need to resolve(Object) one type to another before applying the delegate to generate the sort key.

Version:

$Id: DelegateSortKeyBuilder.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Constructor Summary

DelegateSortKeyBuilder(ISortKeyBuilder<F> delegate)

Method Summary

byte[]	getSortKey(E e) Return an unsigned byte[] sort key.
protected abstract F	resolve(E e) Resolve one generic type to another.

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegateSortKeyBuilder

public DelegateSortKeyBuilder(ISortKeyBuilder<F> delegate)

Method Detail

resolve

protected abstract F resolve(E e)

Resolve one generic type to another.

Parameters:

e - An element.

Returns:

The resolved element.

getSortKey

public byte[] getSortKey(E e)

Description copied from interface: ISortKeyBuilder

Return an unsigned byte[] sort key.

Specified by:

getSortKey in interface ISortKeyBuilder<E>

Parameters:

e - Some object (required).

Returns:

The unsigned byte[] sort key.