ws.suid

Class SuidService

java.lang.Object

ws.suid.SuidService

public class SuidService
extends Object

Service that fetches suid ID blocks from the database.

This service looks up the default datasource and fetches suid blocks from it. There must be a table present named `suid` with columns `block` and `shard`. If records are present in this db, this service will generate suid blocks using the same shard. If no records are present, this service will insert the first record using 0 as the shard id.

Author:

Stijn de Witt [StijnDeWitt@hotmail.com]

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_REQUEST_BLOCKS Max. number of suid blocks that may be requested in a single request.

Constructor Summary

Constructors

Constructor and Description
SuidService()

Method Summary

Modifier and Type	Method and Description
Suid	next() Fetches a single suid.
Suid[]	nextBlocks(int count) Gets the next count ID blocks.

Methods inherited from class java.lang.Object

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

Field Detail

MAX_REQUEST_BLOCKS

public static final int MAX_REQUEST_BLOCKS

Max. number of suid blocks that may be requested in a single request.

See Also:

Constant Field Values

Constructor Detail

SuidService

public SuidService()

Method Detail

nextBlocks

public Suid[] nextBlocks(int count)

Gets the next count ID blocks.

Parameter count must be in the range 1 .. MAX_REQUEST_BLOCKS. If count is less than 1, it is set to 1. If count is greater than MAX_REQUEST_BLOCKS, it is set to MAX_REQUEST_BLOCKS.

Parameters:

count - The number of blocks to get. Is forced to be in range 1 .. 8.

Returns:

An array of block Suids.

See Also:

MAX_REQUEST_BLOCKS

next

public Suid next()

Fetches a single suid.

This method fetches a single Suid from a server-side pool of one block. As such, one in Suid.IDSIZE calls to this method will result in queries to the database to fetch the next block.

Returns:

The next unique Suid, never null.

See Also:

Suid.IDSIZE