I have a query that is very recently starting to throw: \"The built-in indices are not efficient enough for this query and your data. Please add a composite index for this query.\"
I need a simple application in GAE: I have users: public User { private @Id Long id; private String name;
I am querying the __Stat_Kind__ kind. It does not return me entities about kinds that currently exist in the datastore but it includes
I\'m reading through the PDF that Brett Slatkin has published for Google I/O 2010: \"Data pipelines with Google App Engine\".开发者_Python百科
in my application ( kind of wiki clone ) - an article is frequently changing. and i need to track all changes that are开发者_如何学Python done on that article. { text only. }
Is it possible to change or assign new parent to the Model insta开发者_Go百科nce that already in datastore? For example I need something like this
This question already has answers here: 开发者_JAVA技巧 Closed 10 years ago. Possible Duplicate: Unique Constraint At Data Level in GAE
How do i add a record to a child entity in the example below ? For example i have a Employee Record which i开发者_如何学JAVAs name is \"Sam\". how do i add 2 street adress for sam ?
2 possible ways of persisting large strings in the Google Datast开发者_Go百科ore are Text and Blob data types.
I\'ve run into the \"can\'t operate on multiple entity groups in a single transaction.\" problemwhen using APPENGINE FOR JAVA w/ JDO 开发者_Python百科with the following code:
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