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Use this tutorial to develop an ObjectGrid that can store order information for a Web site.

Each step in the tutorial builds on the previous step. Follow each of the steps to build a simple Java SE 5 application that uses an in-memory, local ObjectGrid. The entities use Java SE 5 annotations and generics.

Tutorial Requirements

Ensure that you have met the following requirements before you begin the tutorial:

• Java SE 5
• objectgrid.jar file in the classpath

Step 1: Create a local ObjectGrid with one entity.

The following list provides the features that are demonstrated when creating a local ObjectGrid with one entity:

• Create a local ObjectGrid.
• Define and register a single entity.
• Persist and find an entity.

Step 2: Create simple relationship.

The following list provides the additional features that are demonstrated when creating a simple relationship:

• Define and register two related entities.
• Persist an entity with cascade.
• Find an entity with a relationship.

Step 3: Create a bidirectional relationship with cascading persists.

The following list provides the additional features that are demonstrated when creating a bidirectional relationship with cascading persists:

• Define and register several related entities using automatic discovery.
• Use OrderBy to order an entity List relationship.
• Persist an entity with cascade linking to other managed entities.
• Find an entity with a relationship.

Step 4: Update entities.

In addition to updating entities, this step demonstrates how to find and update an entity.

Step 5: Updating and removing entities by using an index

The following list provides the additional features that are demonstrated when updating and removing entities by using an index:

• Define an index.
• Find, remove, and update entities in a single transaction by using a range index.

Step 6: Updating and removing entities by using a query

The following list provides the additional features that are demonstrated when updating and removing entities by using a query:

• Find, remove, and update entities in a single transaction using a query.

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