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# Google App Engine Java API

This is the Google App Engine Java API, part of the Google App Engine Java Developer's Guide.

Packages
com.google.appengine.api | Provides facilities for server lifecycle management, threading and namespaces/multitenancy.
com.google.appengine.api.appidentity | Provides a service to sign arbitrary byte arrays using an internally-generated, rotated private key.
com.google.appengine.api.backends | Provides access to long-running, addressable servers.
com.google.appengine.api.blobstore | Provides management and persistent storage of large, immutable byte arrays.
com.google.appengine.api.capabilities | Provides status information about the services available via the GAE APIs.
com.google.appengine.api.channel | Provides persistent connectivity to JavaScript clients for real time messaging without the use of polling.
com.google.appengine.api.conversion | Provides a service for format conversion of HTML, PDF, text, images and image optical character recognition (OCR).
com.google.appengine.api.datastore | Provides persistent storage, also accessible via JDO or JPA interfaces.
com.google.appengine.api.files | Provides a service for file storage and access.
com.google.appengine.api.images | Provides facilities for the creation and manipulation of images.
com.google.appengine.api.log | Provides access to request and application logs.
com.google.appengine.api.mail | Provides a service to send email messages on behalf of administrators or authenticated users, also accessible via a JavaMail interface.
com.google.appengine.api.memcache | Provides fast but unreliable data storage, also accessible via a JCache interface.
com.google.appengine.api.oauth | Provides a method for clients to access server resources on behalf of a resource owner, as well as a process for end-users to authorize third-party access to their server resources without sharing their credentials.
com.google.appengine.api.prospectivesearch | Provides a service for matching documents against subscribed queries.
com.google.appengine.api.quota | Provides measurement of API and CPU usage during requests.
com.google.appengine.api.search | Provides a service for indexing documents and retrieving them using search queries.
com.google.appengine.api.search.checkers |
com.google.appengine.api.search.query |
com.google.appengine.api.taskqueue | Provides a mechanism to perform work initiated by a user request, outside of that request.
com.google.appengine.api.urlfetch | Provides a service to make HTTP/S requests of other servers on the internet.
com.google.appengine.api.users | Provides facilities to check if a user has authenticated, retrieve their email address, and check if they are an administrator for this application.
com.google.appengine.api.utils | Provides common utility classes.
com.google.appengine.api.xmpp | Provides access to XMPP-based instant message services, such as Google Talk.
com.google.apphosting.api | Provides access to the ApiProxy, which dispatches API calls to backend services.

This is the Google App Engine Java API, part of the Google App Engine Java Developer's Guide.

Overview | Package | Class | Tree | Deprecated | Index | Help
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