data store

Keys in the GAE datastore are also unique, just as they would be in a traditional database.

To create the datastore you only have to create a model for it: a JSON file that defines the fields and options for those fields.

A persistence interface, a subsystem that specializes in getting information in and out of a datastore.

Either at the end of a stable iteration, or before a major new development effort gets underway within the test datastore.

Information about the test artifacts and test execution results are stored in a series of associated files known as a "test datastore. "

There was an error writing realms information to the datastore.

The user's access token is no longer saved in a plain text file but in GAE's datastore, which is different from a traditional database.

The service must support a minimum of 100 concurrent clients, and shall fail-safe through failures of any underlying datastore.

In the latter case, the server accumulates in its datastore a collection of your selections, indexed by your session.

There was an error connecting to the datastore.

For the past six months, as you are probably aware, we've been struggling with some reliability issues with the App Engine Datastore.

It is imperative that those changes do not compromise the integrity of the persistent datastore.

Database concurrency strategy causes WebLogic Server to delegate locking requests for an entity bean to the underlying datastore.

Googles new datastore defines a data model that lies between the abstract tuples of an RDBMS and the concrete row-column storage of NoSQL.

Inserts data into a DataWindow control, DataStore object, or graph control from data in a file.

There was an error writing to the datastore.

You have one choice of a datastore (Bigtable), and a limited number of Java libraries to choose from.

About NoSQL systems: Datastore is hardly a good example of a good one. It's good enough for App Engine, but you now know its caveats.

My application, dubbed Magnus, takes location data from a mobile device and persists it to a datastore.

In a recent article I showed you how a document-oriented datastore (CouchDB) differs vastly from schema-oriented relational databases.

Define a DataStore that interacts with a ZRM resource handler and define a DataGrid that utilizes the DataStore.

You can select any type of test datastore you wish to create for your new project.

To fulfill these requests, they often must change the state of the underlying datastore.

In the figure, datastores have already been added for the source and target databases, and a user has been added to the source datastore.

Do you see the need of such a datastore for your solutions?

A persistent datastore is one that will survive even in the event of a server crash.

The data from the datastore is then used to populate the contents of the controller so that the controller has the array that backs it.

Taking an existing schema and porting it to the datastore is an even less likely scenario.

We simply added the --clear-datastore parameter as a command-line argument that gets passed into our start-up script.

As is true in the relational world, indexing makes searching easier for the underlying datastore, and therefore faster for end users.

Modeling a business card with a documented-oriented datastore is a much easier job.

A local query like this one only queries against what is stored locally in the datastore.

An associated relational database stores pointers and promotes easy data access to and through the datastore.

He also produces graphics, and is a regular poster to the Guardian Datastore Flickr group.

The format of the file depends on whether the target is a DataWindow (or DataStore) or a graph and on the type of graph.

Like indexing, caching improves the end user experience: it cuts out the roundtrip to the datastore and back, thus making reads faster.

Note that Objectify's query calls still hit the datastore; it's all other datastore interaction calls, like get, that leverage memcache.

When you call a method on one of Pixie's proxy objects, it magically connects to the pixie datastore and fetches the real object for you.

Now that I've defined and annotated the domain model, I'll show you how to use Morphia's Datastore to save, load, and delete entities.

In this walkthrough, you will create a device agent application, a desktop application, and an add-on package in the datastore.

To assign a datastore to a user, right click on the user entry in the User Management console.

Yet, after associating a Race to a Runner, the datastore adds the new list of races ids.

Later in these instructions, you add a datastore and provide users access for this same database .

GAE's quota on memcache calls is higher than on datastore calls, so it makes sense to use memcache whenever possible.

A datastore is an InfoSphere CDC process on a source or target server.

Querying of the supported datastores can be performed using JDOQL, JPQL or SQL (dependent on the datastore).

Select the type of the database to create for the test datastore, and click Next.

I'll just create a datastore and then quickly add documents to it via HTTP.

Namely, I need to have a User instance created (and saved into the GAE datastore) before I can logically add related Retweets.

A subscription is a connection that is required to replicate data between a source datastore and a target datastore.

In this step, select the Initialization Options to initialize assets from a datastore.

Thus, the developer is responsible for determining when to persist data to and load from the datastore.

The driver provides a Map implementation, BasicDBObject, for representing documents in the datastore.

Simulated data access objects essentially simulate a back-end datastore.

When the User object is persisted to the underlying datastore, it'll be a User kind.

GDAL API Tutorial Before opening a GDAL supported raster datastore it is necessary to register drivers.

In addition to creating a test datastore, Rational Administrator is adding the files to source control through the view.

In WAS, you define datastores by giving them a name and a database URL.

Must specify information about the database and provide database connection parameters so that users can connect to the datastore.

This allows applications that use the JDO interface to "plug in" any datastore that supports the JDO API.

The first step in updating employee John Doe's information is to find his instance in the datastore.

In the ejbStore method, the deployer must add logic to the generated UDPDMI code to update the changed bean data into the backend datastore.

The steps describe adding a datastore for the source database.

Our datastore stores schema-less bags of properties . . .

When creating the EJB component, you match the bean with the datastore name.

In the ejbCreate method, the deployer must add logic to the generated UDPDMI code to insert the new bean data into the backend datastore.

This covers the actual CPU time an application uses to process a given request, as well as that for any Datastore usage.

Each record saved in the datastore, also called an entity, requires a primary key.

This IP Security Policy was removed from the datastore by another process.

We clear old attributes, set new attributes, and then save the object in the datastore.

handleSubmit just parses the first form, constructs a Photo, and saves it to the datastore.

Instead, all of the examples use just one object to store data in the datastore.

When you add a local datastore to your application, you will have a single place through which all data storage and retrieval requests pass.

In this way, I've managed to model two domain objects with a schemaless datastore.

In development and test mode, HSQLDB uses an in-memory datastore.

Figure 5 shows one way to manage model and supporting files for an application-dependent datastore.

Thus, you can manipulate the SimpleDB datastore via the web and HTTP.

The difference is, when dealing with the App Engine datastore, you must de-normalize early and often.

In the ejbRemove method, the deployer must add logic to the generated UDPDMI code to remove the bean data from the backend datastore.

The GAE datastore leverages an index for any query issued.

During this step, we will configure the test datastore and manage the testing assets with UCM.

the database library in my com. example. shop. datastore plug-in.

You do get APIs for Google's datastore, fetch, and mail services, but not a lot else (the one notable exception is Django).

And, with more users attracted to your site, you might even need to buy more CPU time and datastore space from Google.

In the Persistent classes, the datastore is an abstract storage device, which can be a file or a database, for example.

When it is finished, it will check out all of the files in the datastore.

Browse to the new test datastore path.

First, we define the data that we will store in the datastore.

This will take us to step two of the wizard, where we will set the datastore path.

DataStore is a beta-level feature in Jackrabbit 1. 4 and disabled by default.

The datastore logs on to the Library Server database.

The datastore logs off of the Library Server database.

Click the Data Store link (figure 48).

Users need this relationship so that they can connect to a datastore.

A Data Store is used to represent a persistent store of data (a database, for example).

Upload an image to storage and save a record to the datastore.

To create this form, start with a file called datastore. jsp, then plug in the block of code in Listing 6

Listing 8: Defining the datastore to be a database

Your fourth step is the creation of new datastores for solidDB and the back-end database. When adding a new datastore, you

Disconnecting from the datastore

See all our data at the Datastore directory