twitter4j

Class TwitterBaseImpl

java.lang.Object

twitter4j.TwitterBaseImpl

All Implemented Interfaces:

java.io.Serializable, OAuthSupport, twitter4j.internal.http.HttpResponseListener, TwitterBase

Direct Known Subclasses:

AsyncTwitterImpl, TwitterImpl, TwitterStreamImpl

abstract class TwitterBaseImpl
extends java.lang.Object
implements TwitterBase, java.io.Serializable, OAuthSupport, twitter4j.internal.http.HttpResponseListener

Base class of Twitter / AsyncTwitter / TwitterStream supports OAuth.

Author:

Yusuke Yamamoto - yusuke at mac.com

Field Summary

Fields

Modifier and Type	Field and Description
protected Authorization	auth
protected Configuration	conf
protected twitter4j.internal.json.z_T4JInternalFactory	factory
protected twitter4j.internal.http.HttpClientWrapper	http
protected long	id
private java.util.List<RateLimitStatusListener>	rateLimitStatusListeners
protected java.lang.String	screenName
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor and Description
TwitterBaseImpl(Configuration conf, Authorization auth)

Method Summary

Methods

Modifier and Type	Method and Description
void	addRateLimitStatusListener(RateLimitStatusListener listener) Registers a RateLimitStatusListener for account associated rate limits
protected void	ensureAuthorizationEnabled()
protected void	ensureOAuthEnabled()
boolean	equals(java.lang.Object o)
protected User	fillInIDAndScreenName()
Authorization	getAuthorization() Returns the authorization scheme for this instance. The returned type will be either of BasicAuthorization, OAuthAuthorization, or NullAuthorization
Configuration	getConfiguration() Returns the configuration associated with this instance
long	getId() Returns authenticating user's user id. This method may internally call verifyCredentials() on the first invocation if - this instance is authenticated by Basic and email address is supplied instead of screen name, or - this instance is authenticated by OAuth.
private OAuthSupport	getOAuth()
AccessToken	getOAuthAccessToken() Returns an access token associated with this instance. If no access token is associated with this instance, this will retrieve a new access token.
AccessToken	getOAuthAccessToken(RequestToken requestToken) Retrieves an access token associated with the supplied request token and sets userId.
AccessToken	getOAuthAccessToken(RequestToken requestToken, java.lang.String oauthVerifier) Retrieves an access token associated with the supplied request token and sets userId.
AccessToken	getOAuthAccessToken(java.lang.String oauthVerifier) Retrieves an access token.
AccessToken	getOAuthAccessToken(java.lang.String screenName, java.lang.String password) Retrieves an access token associated with the supplied screen name and password using xAuth. In order to get access acquire AccessToken using xAuth, you must apply by sending an email to api@twitter.com — all other applications will receive an HTTP 401 error.
RequestToken	getOAuthRequestToken() Retrieves a request token
RequestToken	getOAuthRequestToken(java.lang.String callbackUrl) Retrieves a request token
RequestToken	getOAuthRequestToken(java.lang.String callbackUrl, java.lang.String xAuthAccessType) Retrieves a request token
java.lang.String	getScreenName() Returns authenticating user's screen name. This method may internally call verifyCredentials() on the first invocation if - this instance is authenticated by Basic and email address is supplied instead of screen name, or - this instance is authenticated by OAuth. Note that this method returns a transiently cached (will be lost upon serialization) screen name while it is possible to change a user's screen name.
int	hashCode()
void	httpResponseReceived(twitter4j.internal.http.HttpResponseEvent event)
private void	init()
private void	readObject(java.io.ObjectInputStream stream)
protected void	setFactory()
void	setOAuthAccessToken(AccessToken accessToken) Sets the access token
void	setOAuthConsumer(java.lang.String consumerKey, java.lang.String consumerSecret) sets the OAuth consumer key and consumer secret
void	shutdown() Shuts down this instance and releases allocated resources.
java.lang.String	toString()
private void	writeObject(java.io.ObjectOutputStream out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

conf

protected Configuration conf

screenName

protected transient java.lang.String screenName

id

protected transient long id

http

protected transient twitter4j.internal.http.HttpClientWrapper http

rateLimitStatusListeners

private java.util.List<RateLimitStatusListener> rateLimitStatusListeners

factory

protected twitter4j.internal.json.z_T4JInternalFactory factory

auth

protected Authorization auth

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

TwitterBaseImpl

TwitterBaseImpl(Configuration conf,
               Authorization auth)

Method Detail

init

private void init()

setFactory

protected void setFactory()

getScreenName

public java.lang.String getScreenName()
                               throws TwitterException,
                                      java.lang.IllegalStateException

Returns authenticating user's screen name.
This method may internally call verifyCredentials() on the first invocation if
- this instance is authenticated by Basic and email address is supplied instead of screen name, or - this instance is authenticated by OAuth.
Note that this method returns a transiently cached (will be lost upon serialization) screen name while it is possible to change a user's screen name.

Specified by:

getScreenName in interface TwitterBase

Returns:

the authenticating screen name

Throws:

TwitterException - when verifyCredentials threw an exception.

java.lang.IllegalStateException - if no credentials are supplied. i.e.) this is an anonymous Twitter instance

getId

public long getId()
           throws TwitterException,
                  java.lang.IllegalStateException

Returns authenticating user's user id.
This method may internally call verifyCredentials() on the first invocation if
- this instance is authenticated by Basic and email address is supplied instead of screen name, or - this instance is authenticated by OAuth.

Specified by:

getId in interface TwitterBase

Returns:

the authenticating user's id

Throws:

TwitterException - when verifyCredentials threw an exception.

java.lang.IllegalStateException - if no credentials are supplied. i.e.) this is an anonymous Twitter instance

fillInIDAndScreenName

protected User fillInIDAndScreenName()
                              throws TwitterException

Throws:

TwitterException

addRateLimitStatusListener

public void addRateLimitStatusListener(RateLimitStatusListener listener)

Registers a RateLimitStatusListener for account associated rate limits

Specified by:

addRateLimitStatusListener in interface TwitterBase

Parameters:

listener - the listener to be added

See Also:

Rate Limiting | Twitter Developers

httpResponseReceived

public void httpResponseReceived(twitter4j.internal.http.HttpResponseEvent event)

Specified by:

httpResponseReceived in interface twitter4j.internal.http.HttpResponseListener

getAuthorization

public final Authorization getAuthorization()

Returns the authorization scheme for this instance.
The returned type will be either of BasicAuthorization, OAuthAuthorization, or NullAuthorization

Specified by:

getAuthorization in interface TwitterBase

Returns:

the authorization scheme for this instance

getConfiguration

public Configuration getConfiguration()

Returns the configuration associated with this instance

Specified by:

getConfiguration in interface TwitterBase

Returns:

configuration associated with this instance

shutdown

public void shutdown()

Shuts down this instance and releases allocated resources.

Specified by:

shutdown in interface TwitterBase

ensureAuthorizationEnabled

protected final void ensureAuthorizationEnabled()

ensureOAuthEnabled

protected final void ensureOAuthEnabled()

writeObject

private void writeObject(java.io.ObjectOutputStream out)
                  throws java.io.IOException

Throws:

java.io.IOException

readObject

private void readObject(java.io.ObjectInputStream stream)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

setOAuthConsumer

public void setOAuthConsumer(java.lang.String consumerKey,
                    java.lang.String consumerSecret)

sets the OAuth consumer key and consumer secret

Specified by:

setOAuthConsumer in interface OAuthSupport

Parameters:

consumerKey - OAuth consumer key

consumerSecret - OAuth consumer secret

getOAuthRequestToken

public RequestToken getOAuthRequestToken()
                                  throws TwitterException

Retrieves a request token

Specified by:

getOAuthRequestToken in interface OAuthSupport

Returns:

generated request token.

Throws:

TwitterException - when Twitter service or network is unavailable

See Also:

OAuth FAQ | Twitter Developers, OAuth Core 1.0a - 6.1. Obtaining an Unauthorized Request Token, POST oauth/request_token | Twitter Developers

getOAuthRequestToken

public RequestToken getOAuthRequestToken(java.lang.String callbackUrl)
                                  throws TwitterException

Retrieves a request token

Specified by:

getOAuthRequestToken in interface OAuthSupport

Parameters:

callbackUrl - callback URL

Returns:

generated request token

Throws:

TwitterException - when Twitter service or network is unavailable

See Also:

OAuth FAQ | Twitter Developers, OAuth Core 1.0a - 6.1. Obtaining an Unauthorized Request Token, POST oauth/request_token | Twitter Developers

getOAuthRequestToken

public RequestToken getOAuthRequestToken(java.lang.String callbackUrl,
                                java.lang.String xAuthAccessType)
                                  throws TwitterException

Retrieves a request token

Specified by:

getOAuthRequestToken in interface OAuthSupport

Parameters:

callbackUrl - callback URL

xAuthAccessType - Overrides the access level an application requests to a users account. Supported values are read or write. This parameter is intended to allow a developer to register a read/write application but also request read only access when appropriate.

Returns:

generated request token

Throws:

TwitterException - when Twitter service or network is unavailable

See Also:

OAuth FAQ | Twitter Developers, OAuth Core 1.0a - 6.1. Obtaining an Unauthorized Request Token, POST oauth/request_token | Twitter Developers

getOAuthAccessToken

public AccessToken getOAuthAccessToken()
                                throws TwitterException

Returns an access token associated with this instance.
If no access token is associated with this instance, this will retrieve a new access token. Basic authenticated instance of this class will try acquiring an AccessToken using xAuth.
In order to get access acquire AccessToken using xAuth, you must apply by sending an email to api@twitter.com all other applications will receive an HTTP 401 error. Web-based applications will not be granted access, except on a temporary basis for when they are converting from basic-authentication support to full OAuth support.
Storage of Twitter usernames and passwords is forbidden. By using xAuth, you are required to store only access tokens and access token secrets. If the access token expires or is expunged by a user, you must ask for their login and password again before exchanging the credentials for an access token.

Specified by:

getOAuthAccessToken in interface OAuthSupport

Returns:

access token

Throws:

TwitterException - When Twitter service or network is unavailable, when the user has not authorized, or when the client application is not permitted to use xAuth

See Also:

xAuth | Twitter Developers

getOAuthAccessToken

public AccessToken getOAuthAccessToken(java.lang.String oauthVerifier)
                                throws TwitterException

Retrieves an access token.

Specified by:

getOAuthAccessToken in interface OAuthSupport

Parameters:

oauthVerifier - OAuth verifier. AKA pin.

Returns:

access token

Throws:

java.lang.IllegalStateException - when AccessToken has already been retrieved or set

TwitterException - when Twitter service or network is unavailable, or the user has not authorized

See Also:

OAuth FAQ | dev.twitter.com - How long does an access token last?, OAuth Core 1.0a - 6.2. Obtaining User Authorization, POST oauth/access_token | Twitter Developers

getOAuthAccessToken

public AccessToken getOAuthAccessToken(RequestToken requestToken)
                                throws TwitterException

Retrieves an access token associated with the supplied request token and sets userId.

Specified by:

getOAuthAccessToken in interface OAuthSupport

Parameters:

requestToken - the request token

Returns:

access token associated with the supplied request token.

Throws:

java.lang.IllegalStateException - when AccessToken has already been retrieved or set

TwitterException - when Twitter service or network is unavailable, or the user has not authorized

See Also:

OAuth FAQ | dev.twitter.com - How long does an access token last?, OAuth Core 1.0a - 6.2. Obtaining User Authorization, POST oauth/access_token | Twitter Developers

getOAuthAccessToken

public AccessToken getOAuthAccessToken(RequestToken requestToken,
                              java.lang.String oauthVerifier)
                                throws TwitterException

Retrieves an access token associated with the supplied request token and sets userId.

Specified by:

getOAuthAccessToken in interface OAuthSupport

Parameters:

requestToken - the request token

oauthVerifier - OAuth verifier. AKA pin.

Returns:

access token associated with the supplied request token.

Throws:

java.lang.IllegalStateException - when AccessToken has already been retrieved or set

TwitterException - when Twitter service or network is unavailable, or the user has not authorized

See Also:

OAuth Core 1.0a - 6.2. Obtaining User Authorization, POST oauth/access_token | Twitter Developers

setOAuthAccessToken

public void setOAuthAccessToken(AccessToken accessToken)

Sets the access token

Specified by:

setOAuthAccessToken in interface OAuthSupport

Parameters:

accessToken - accessToken

getOAuthAccessToken

public AccessToken getOAuthAccessToken(java.lang.String screenName,
                              java.lang.String password)
                                throws TwitterException

Retrieves an access token associated with the supplied screen name and password using xAuth.
In order to get access acquire AccessToken using xAuth, you must apply by sending an email to api@twitter.com — all other applications will receive an HTTP 401 error. Web-based applications will not be granted access, except on a temporary basis for when they are converting from basic-authentication support to full OAuth support.
Storage of Twitter usernames and passwords is forbidden. By using xAuth, you are required to store only access tokens and access token secrets. If the access token expires or is expunged by a user, you must ask for their login and password again before exchanging the credentials for an access token.

Specified by:

getOAuthAccessToken in interface OAuthSupport

Parameters:

screenName - the screen name

password - the password

Returns:

access token associated with the supplied request token.

Throws:

TwitterException - when Twitter service or network is unavailable, or the user has not authorized

See Also:

OAuth FAQ | dev.twitter.com - How long does an access token last?, xAuth | Twitter Developers, POST oauth/access_token | Twitter Developers

getOAuth

private OAuthSupport getOAuth()

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object