Examples with QueryPredicate com.amplifyframework.core.model.query.predicate.QueryPredicate used on opensource projects

Example 6 with QueryPredicate

use of com.amplifyframework.core.model.query.predicate.QueryPredicate in project amplify-android by aws-amplify.

the class SQLPredicateTest method testMatchAllPredicate.

/**
 * Test that MATCH ALL predicate is correctly parsed to an
 * expression that is always true.
 * @throws DataStoreException if parsing fails
 */
@Test
public void testMatchAllPredicate() throws DataStoreException {
    QueryPredicate predicate = QueryPredicates.all();
    SQLPredicate sqlPredicate = new SQLPredicate(predicate);
    assertEquals("1 = 1", sqlPredicate.toString());
    assertTrue(sqlPredicate.getBindings().isEmpty());
}

Example 7 with QueryPredicate

use of com.amplifyframework.core.model.query.predicate.QueryPredicate in project amplify-android by aws-amplify.

the class SQLiteStorageAdapter method modelExists.

private boolean modelExists(Model model, QueryPredicate predicate) throws DataStoreException {
    final String modelName = model.getModelName();
    final ModelSchema schema = schemaRegistry.getModelSchemaForModelClass(modelName);
    final SQLiteTable table = SQLiteTable.fromSchema(schema);
    final String tableName = table.getName();
    final String primaryKeyName = table.getPrimaryKey().getName();
    final QueryPredicate matchId = QueryField.field(tableName, primaryKeyName).eq(model.getId());
    final QueryPredicate condition = predicate.and(matchId);
    return sqlCommandProcessor.executeExists(sqlCommandFactory.existsFor(schema, condition));
}

Example 8 with QueryPredicate

use of com.amplifyframework.core.model.query.predicate.QueryPredicate in project amplify-android by aws-amplify.

the class SQLiteStorageAdapter method query.

/**
 * Helper method to synchronously query for a single model instance.  Used before any save initiated by
 * DATASTORE_API in order to determine which fields have changed.
 * @param model a Model that we want to query for the same type and id in SQLite.
 * @return the Model instance from SQLite, if it exists, otherwise null.
 */
private Model query(Model model) {
    final String modelName = model.getModelName();
    final ModelSchema schema = schemaRegistry.getModelSchemaForModelClass(modelName);
    final SQLiteTable table = SQLiteTable.fromSchema(schema);
    final String primaryKeyName = table.getPrimaryKey().getName();
    final QueryPredicate matchId = QueryField.field(modelName, primaryKeyName).eq(model.getId());
    Iterator<? extends Model> result = Single.<Iterator<? extends Model>>create(emitter -> {
        if (model instanceof SerializedModel) {
            query(model.getModelName(), Where.matches(matchId), emitter::onSuccess, emitter::onError);
        } else {
            query(model.getClass(), Where.matches(matchId), emitter::onSuccess, emitter::onError);
        }
    }).blockingGet();
    return result.hasNext() ? result.next() : null;
}

Example 9 with QueryPredicate

use of com.amplifyframework.core.model.query.predicate.QueryPredicate in project amplify-android by aws-amplify.

the class SqlQueryProcessor method modelExists.

boolean modelExists(Model model, QueryPredicate predicate) throws DataStoreException {
    final String modelName = model.getModelName();
    final ModelSchema schema = modelSchemaRegistry.getModelSchemaForModelClass(modelName);
    final SQLiteTable table = SQLiteTable.fromSchema(schema);
    final String tableName = table.getName();
    final String primaryKeyName = table.getPrimaryKey().getName();
    final QueryPredicate matchId = QueryField.field(tableName, primaryKeyName).eq(model.getId());
    final QueryPredicate condition = predicate.and(matchId);
    return sqlCommandProcessor.executeExists(sqlCommandFactory.existsFor(schema, condition));
}

Example 10 with QueryPredicate

use of com.amplifyframework.core.model.query.predicate.QueryPredicate in project amplify-android by aws-amplify.

the class AppSyncRequestFactoryTest method validatePredicateGroupForSyncExpressionIsNotWrappedWithAnd.

/**
 * If a QueryPredicateGroup is provided, it should be parsed as is, and not be wrapped with another AND group.
 * @throws AmplifyException On failure to parse ModelSchema from model class
 * @throws JSONException from JSONAssert.assertEquals.
 */
@Test
public void validatePredicateGroupForSyncExpressionIsNotWrappedWithAnd() throws AmplifyException, JSONException {
    String id = "426f8e8d-ea0f-4839-a73f-6a2a38565ba1";
    ModelSchema schema = ModelSchema.fromModelClass(BlogOwner.class);
    QueryPredicate predicate = BlogOwner.ID.eq(id).and(Blog.NAME.eq("Spaghetti"));
    final GraphQLRequest<Iterable<Post>> request = AppSyncRequestFactory.buildSyncRequest(schema, null, null, predicate);
    JSONAssert.assertEquals(Resources.readAsString("base-sync-request-with-predicate-group.txt"), request.getContent(), true);
}