won.protocol.model

Class DataWithEtag<T>

java.lang.Object

won.protocol.model.DataWithEtag<T>

Type Parameters:

T -

public class DataWithEtag<T>
extends java.lang.Object

Data holder for situations in which data is used together with a value that can be used for an http ETAG header.

Constructor Summary

Constructors

Constructor and Description
DataWithEtag(T data, java.lang.String etag, java.lang.String oldEtag) Construcutor setting notFound to false.
DataWithEtag(T data, java.lang.String etag, java.lang.String oldEtag, boolean notFound)

Method Summary

Modifier and Type	Method and Description
static DataWithEtag	dataNotChanged(DataWithEtag data) Creates a DWE that indicates nothing has changed.
static DataWithEtag	dataNotChanged(java.lang.String etag) Creates a DWE that indicates nothing has changed.
static DataWithEtag	dataNotFound()
T	getData()
java.lang.String	getEtag() The etag currently associated with the data.
boolean	isChanged() Returns true if this DataWithEtag object is the result of an ETAG checking call and the data has changed since.
boolean	isNotFound() This method allows querying if the data is null because it was not found.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataWithEtag

public DataWithEtag(T data,
                    java.lang.String etag,
                    java.lang.String oldEtag,
                    boolean notFound)

DataWithEtag

public DataWithEtag(T data,
                    java.lang.String etag,
                    java.lang.String oldEtag)

Construcutor setting notFound to false.

Parameters:

data -

etag -

Method Detail

dataNotFound

public static DataWithEtag dataNotFound()

dataNotChanged

public static DataWithEtag dataNotChanged(DataWithEtag data)

Creates a DWE that indicates nothing has changed. May be useful if the type of the object at hand has the wrong generic type.

Parameters:

data -

Returns:

dataNotChanged

public static DataWithEtag dataNotChanged(java.lang.String etag)

Creates a DWE that indicates nothing has changed.

Parameters:

etag - the unchanged etag

Returns:

getData

public T getData()

getEtag

public java.lang.String getEtag()

The etag currently associated with the data.

Returns:

isChanged

public boolean isChanged()

Returns true if this DataWithEtag object is the result of an ETAG checking call and the data has changed since. This is the case if

Returns:

isNotFound

public boolean isNotFound()

This method allows querying if the data is null because it was not found. Only returns true if notFound was explicitly set to true before.

Returns: