com.ontimize.util.gis.client.defaultimplementations.cache
Class RequestQueryWithBuffer

java.lang.Object
  com.ontimize.util.gis.client.defaultimplementations.cache.RequestQueryWithBuffer

All Implemented Interfaces:

IRequestQuery

public class RequestQueryWithBuffer
extends java.lang.Object
implements IRequestQuery

Request query with a fixed size requests stack.
When a new request arrives and the current stack has the maximum size the first request in the stack is deleted and the new request is added to the current stack.

Field Summary

protected int	bufferSize
protected java.util.concurrent.locks.Condition	emptyQueryCondition
protected java.util.Hashtable<java.lang.Object,java.lang.Object>	lastTickets
protected java.util.Stack<java.lang.Object>	queryData
protected java.util.concurrent.locks.Lock	queryLock

Fields inherited from interface com.ontimize.util.gis.client.defaultimplementations.cache.IRequestQuery

PARAMETER_REQUEST_DATA, PARAMETER_REQUESTER_ID

Constructor Summary

RequestQueryWithBuffer()

RequestQueryWithBuffer(int bufferSize)
Request query with buffer constructor

Method Summary

void	addRequest(java.lang.Object requestData, java.lang.Object requesterId) Add a new data request to the pending requests stack
java.util.concurrent.locks.Condition	getEmptyCondition() Get the empty stack condition reference
java.util.concurrent.locks.Lock	getLock() Get the reference of the pending requests stack lock
int	getQueriesStackSize()
java.lang.Object	getRequest() Get the new pending request located at the top of the stack

Methods inherited from class java.lang.Object

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

Field Detail

queryLock

protected java.util.concurrent.locks.Lock queryLock

bufferSize

protected int bufferSize

emptyQueryCondition

protected java.util.concurrent.locks.Condition emptyQueryCondition

lastTickets

protected java.util.Hashtable<java.lang.Object,java.lang.Object> lastTickets

queryData

protected java.util.Stack<java.lang.Object> queryData

Constructor Detail

RequestQueryWithBuffer

public RequestQueryWithBuffer()

RequestQueryWithBuffer

public RequestQueryWithBuffer(int bufferSize)

Request query with buffer constructor

Parameters:

bufferSize - Maximum allowable stack size

Method Detail

getEmptyCondition

public java.util.concurrent.locks.Condition getEmptyCondition()

Description copied from interface: IRequestQuery

Get the empty stack condition reference

Specified by:

getEmptyCondition in interface IRequestQuery

Returns:

Empty request stack condition

getLock

public java.util.concurrent.locks.Lock getLock()

Description copied from interface: IRequestQuery

Get the reference of the pending requests stack lock

Specified by:

getLock in interface IRequestQuery

Returns:

Stack lock

addRequest

public void addRequest(java.lang.Object requestData,
                       java.lang.Object requesterId)

Description copied from interface: IRequestQuery

Add a new data request to the pending requests stack

Specified by:

addRequest in interface IRequestQuery

Parameters:

requestData - Requested data description

requesterId - Identifier for the requesting class

getRequest

public java.lang.Object getRequest()

Description copied from interface: IRequestQuery

Get the new pending request located at the top of the stack

Specified by:

getRequest in interface IRequestQuery

Returns:

First pending request

getQueriesStackSize

public int getQueriesStackSize()

Specified by:

getQueriesStackSize in interface IRequestQuery