Examples with SimpleModelProvider com.amplifyframework.datastore.model.SimpleModelProvider used on opensource projects

Example 1 with SimpleModelProvider

use of com.amplifyframework.datastore.model.SimpleModelProvider in project amplify-android by aws-amplify.

the class TopologicalOrderingTest method orderingOfBlogPostComment.

/**
 * Checks the topological ordering of the Blog, Post, and Comment classes.
 * @throws AmplifyException On failure to load models into registry
 */
@Test
public void orderingOfBlogPostComment() throws AmplifyException {
    // Load the models into the registry.
    // They are provided intentionally out of topological order.
    final SimpleModelProvider provider = SimpleModelProvider.withRandomVersion(Comment.class, Blog.class, BlogOwner.class, Post.class);
    final SchemaRegistry registry = SchemaRegistry.instance();
    registry.clear();
    registry.register(provider.models());
    // Find the schema that the registry created for each of the models.
    ModelSchema commentSchema = findSchema(registry, Comment.class);
    ModelSchema postSchema = findSchema(registry, Post.class);
    ModelSchema blogSchema = findSchema(registry, Blog.class);
    // Act: get a topological ordering of the models.
    TopologicalOrdering topologicalOrdering = TopologicalOrdering.forRegisteredModels(registry, provider);
    // Assert: Blog comes before Post, and Post comes before Comment.
    assertTrue(topologicalOrdering.check(blogSchema).isBefore(postSchema));
    assertTrue(topologicalOrdering.check(postSchema).isBefore(commentSchema));
    // Assert: in other words, Comment is after Post, and Post is after Blog.
    assertTrue(topologicalOrdering.check(commentSchema).isAfter(postSchema));
    assertTrue(topologicalOrdering.check(postSchema).isAfter(blogSchema));
}