book

Programming Google App Engine

by Dan Sanderson

November 2009

Intermediate to advanced

390 pages

11h 53m

English

O'Reilly Media, Inc.

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Using This BookConventions Used in This BookUsing Code SamplesSafari® Books OnlineHow to Contact UsAcknowledgments
The Runtime EnvironmentThe Static File ServersThe DatastoreEntities and PropertiesQueries and IndexesTransactionsThe ServicesGoogle AccountsTask Queues and Cron JobsDeveloper ToolsThe Administration ConsoleThings App Engine Doesn’t Do...YetGetting Started
Setting Up the SDKInstalling the Python SDKA brief tour of the LauncherInstalling the Java SDKJava on Mac OS XInstalling the Java SDK with the Google Plugin for EclipseInstalling the Java SDK without EclipseDeveloping the ApplicationThe User Preferences PatternDeveloping a Python AppIntroducing the webapp frameworkUsers and Google AccountsWeb forms and the datastoreCaching with memcacheDeveloping a Java AppUsers and Google AccountsWeb forms and the datastoreCaching with memcacheThe Development ConsoleRegistering the ApplicationThe Application ID and TitleSetting Up a Domain NameGoogle Apps and AuthenticationUploading the ApplicationIntroducing the Administration Console
The App Engine ArchitectureConfiguring the FrontendConfiguring a Python AppRuntime versionsConfiguring a Java AppDomain NamesApp IDs and VersionsApp IDs and versions in PythonApp IDs and versions in JavaRequest HandlersRequest handlers in PythonRequest handlers in JavaJavaServer Pages (JSPs)Static Files and Resource FilesStatic files in PythonMIME typesCache expirationStatic files in JavaSecure ConnectionsSecure connections in PythonSecure connections in JavaAuthorization with Google AccountsAuthorization in PythonAuthorization in JavaHow the App Is RunThe Python Runtime EnvironmentThe Java Runtime EnvironmentThe SandboxThe Python sandboxThe Java sandboxApp CachingApp caching in PythonApp caching in JavaLoggingLogging in PythonLogging in JavaQuotas and LimitsRequest LimitsCPU LimitsService LimitsDeployment LimitsBillable QuotasResource Usage Headers
Entities, Keys, and PropertiesIntroducing the Python Datastore APIIntroducing the Java Datastore APIProperty ValuesStrings, Text, and BlobsUnset Versus the Null ValueMultivalued PropertiesKeys and Key ObjectsUsing EntitiesGetting Entities Using KeysInspecting Entity ObjectsSaving EntitiesDeleting Entities
Queries and KindsQuery Results and KeysGQLThe Python Query APIThe Query ClassGQL in PythonRetrieving ResultsKeys-Only QueriesThe Java Query APIKeys-Only Queries in JavaIntroducing IndexesAutomatic Indexes and Simple QueriesAll Entities of a KindOne Equality FilterGreater-Than and Less-Than FiltersOne Sort OrderQueries on KeysKindless QueriesCustom Indexes and Complex QueriesMultiple Sort OrdersFilters on Multiple PropertiesMultiple Equality FiltersNot-Equal and IN FiltersUnset and Nonindexed PropertiesSort Orders and Value TypesQueries and Multivalued PropertiesA Simple ExampleMVPs in PythonMVPs and Equality FiltersMVPs and Inequality FiltersMVPs and Sort OrdersExploding IndexesConfiguring IndexesIndex Configuration for PythonIndex Configuration for Java
Entities and Entity GroupsKeys, Paths, and AncestorsAncestor QueriesWhat Can Happen in a TransactionTransactional ReadsTransactions in PythonTransactions in JavaHow Entities Are UpdatedHow Entities Are ReadBatch UpdatesHow Indexes Are Updated
Models and PropertiesProperty DeclarationsProperty Value TypesProperty ValidationNonindexed PropertiesAutomatic ValuesList PropertiesModels and Schema MigrationModeling RelationshipsOne-to-Many RelationshipsOne-to-One RelationshipsMany-to-Many RelationshipsThe key list methodThe link model methodModel InheritanceQueries and PolyModelsCreating Your Own Property ClassesValidating Property ValuesMarshaling Value TypesCustomizing Default ValuesAccepting Arguments
Setting Up JPAEntities and KeysEntity PropertiesEmbedded ObjectsSaving, Fetching, and Deleting ObjectsTransactions in JPAQueries and JPQLRelationshipsFor More Information

The Python Memcache APISetting and Getting Values in PythonSetting and Getting Multiple ValuesMemcache NamespacesCache ExpirationDeleting KeysMemcache CountersCache StatisticsThe Java Memcache API
Fetching URLs in PythonFetching URLs in JavaAsynchronous Requests in PythonRPC ObjectsProcessing Results with Callbacks
Enabling Inbound ServicesSending Email MessagesSender AddressesRecipientsAttachmentsSending Email in PythonSending Email in JavaReceiving Email MessagesReceiving Email in PythonReceiving Email in JavaSending XMPP MessagesSending a Chat InvitationSending a Chat MessageChecking a Google Talk User’s StatusReceiving XMPP MessagesReceiving XMPP Messages in PythonReceiving XMPP Messages in Java
Setting Up the Remote API for PythonSetting Up the Remote API for JavaUsing the Bulk Loader ToolInstalling SQLiteBackup and RestoreUploading DataDownloading DataControlling the Bulk LoaderUsing the Remote Shell ToolUsing the Remote API from a Script
Task QueuesProcessing Rates and Token BucketsElements of a TaskTask Handlers and RetriesTesting and Managing TasksUsing Task Queues in PythonDeferring work with tasksUsing Task Queues in JavaTransactional Task EnqueueingScheduled Tasks
Installing DjangoCreating a Django ProjectThe Request Handler ScriptThe Django App Engine HelperCreating a Django ApplicationUsing App Engine Models With DjangoUsing Django Unit Tests and FixturesUsing Django Forms
Uploading an ApplicationUsing VersionsManaging Service ConfigurationManaging IndexesBrowsing and Downloading LogsInspecting the DatastoreApplication SettingsManaging DevelopersQuotas and BillingGetting Help

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About the Author

Dan Sanderson is a technical writer and software engineer at Google Inc. He has worked in the web industry for over 10 years as a software engineer and technical writer for Google, Amazon.com, and the Walt Disney Internet Group. He lives in Seattle, Washington. For more information about Dan, visit his website at http://www.dansanderson.com.