Examples with DatabaseScanner com.microsoft.azure.mobile.utils.storage.StorageHelper.DatabaseStorage.DatabaseScanner used on opensource projects

Example 1 with DatabaseScanner

use of com.microsoft.azure.mobile.utils.storage.StorageHelper.DatabaseStorage.DatabaseScanner in project mobile-center-sdk-android by Microsoft.

the class DatabasePersistenceAndroidTest method deleteLogs.

@Test
public void deleteLogs() throws PersistenceException, IOException {
    /* Initialize database persistence. */
    DatabasePersistence persistence = new DatabasePersistence("test-persistence", "deleteLogs", 1);
    /* Set a mock log serializer. */
    LogSerializer logSerializer = new DefaultLogSerializer();
    logSerializer.addLogFactory(MOCK_LOG_TYPE, new MockLogFactory());
    persistence.setLogSerializer(logSerializer);
    try {
        /* Generate a log and persist. */
        Log log1 = AndroidTestUtils.generateMockLog();
        Log log2 = AndroidTestUtils.generateMockLog();
        Log log3 = AndroidTestUtils.generateMockLog();
        Log log4 = AndroidTestUtils.generateMockLog();
        persistence.putLog("test-p1", log1);
        persistence.putLog("test-p1", log2);
        persistence.putLog("test-p2", log3);
        persistence.putLog("test-p3", log4);
        assertEquals(2, persistence.countLogs("test-p1"));
        assertEquals(1, persistence.countLogs("test-p2"));
        assertEquals(1, persistence.countLogs("test-p3"));
        /* Get a log from persistence. */
        List<Log> outputLogs1 = new ArrayList<>();
        List<Log> outputLogs2 = new ArrayList<>();
        List<Log> outputLogs3 = new ArrayList<>();
        String id = persistence.getLogs("test-p1", 5, outputLogs1);
        persistence.getLogs("test-p2", 5, outputLogs2);
        persistence.getLogs("test-p3", 5, outputLogs3);
        /* Verify. */
        assertNotNull(id);
        assertNotEquals("", id);
        assertEquals(2, outputLogs1.size());
        assertEquals(1, outputLogs2.size());
        assertEquals(1, outputLogs3.size());
        /* Delete. */
        persistence.deleteLogs("", id);
        /* Access DatabaseStorage directly to verify the deletions. */
        DatabaseScanner scanner1 = persistence.mDatabaseStorage.getScanner(DatabasePersistence.COLUMN_GROUP, "test-p1");
        DatabaseScanner scanner2 = persistence.mDatabaseStorage.getScanner(DatabasePersistence.COLUMN_GROUP, "test-p2");
        DatabaseScanner scanner3 = persistence.mDatabaseStorage.getScanner(DatabasePersistence.COLUMN_GROUP, "test-p3");
        //noinspection TryFinallyCanBeTryWithResources
        try {
            /* Verify. */
            assertEquals(2, getIteratorSize(scanner1.iterator()));
            assertEquals(1, getIteratorSize(scanner2.iterator()));
            assertEquals(1, getIteratorSize(scanner3.iterator()));
        } finally {
            /* Close. */
            scanner1.close();
            scanner2.close();
            scanner3.close();
        }
        /* Delete. */
        persistence.deleteLogs("test-p1", id);
        /* Access DatabaseStorage directly to verify the deletions. */
        DatabaseScanner scanner4 = persistence.mDatabaseStorage.getScanner(DatabasePersistence.COLUMN_GROUP, "test-p1");
        //noinspection TryFinallyCanBeTryWithResources
        try {
            /* Verify. */
            assertEquals(0, getIteratorSize(scanner4.iterator()));
        } finally {
            /* Close. */
            scanner4.close();
        }
        /* Count logs after delete. */
        assertEquals(0, persistence.countLogs("test-p1"));
        assertEquals(1, persistence.countLogs("test-p2"));
        assertEquals(1, persistence.countLogs("test-p3"));
    } finally {
        /* Close. */
        //noinspection ThrowFromFinallyBlock
        persistence.close();
    }
}