DBQueries { public static <K, O> boolean contains(final K objectKey, final Query<O> query, final String tableName, final Connection connection){ final String selectSql = String.format("SELECT objectKey FROM cqtbl_%s", tableName); PreparedStatement statement = null; try{ List<WhereClause> additionalWhereClauses = Collections.singletonList(new WhereClause("objectKey = ?", objectKey)); statement = createAndBindSelectPreparedStatement(selectSql, " LIMIT 1", additionalWhereClauses, query, connection); java.sql.ResultSet resultSet = statement.executeQuery(); return resultSet.next(); }catch (SQLException e){ throw new IllegalStateException("Unable to execute contains. Query: " + query, e); }finally{ DBUtils.closeQuietly(statement); } }  static void createIndexTable(final String tableName, final Class<K> objectKeyClass, final Class<A> valueClass, final Connection connection); static boolean indexTableExists(final String tableName, final Connection connection); static void createIndexOnTable(final String tableName, final Connection connection); static void suspendSyncAndJournaling(final Connection connection); static void setSyncAndJournaling(final Connection connection, final SQLiteConfig.SynchronousMode pragmaSynchronous, final SQLiteConfig.JournalMode pragmaJournalMode); static SQLiteConfig.SynchronousMode getPragmaSynchronousOrNull(final Connection connection); static SQLiteConfig.JournalMode getPragmaJournalModeOrNull(final Connection connection); static void dropIndexOnTable(final String tableName, final Connection connection); static void dropIndexTable(final String tableName, final Connection connection); static void clearIndexTable(final String tableName, final Connection connection); static void compactDatabase(final Connection connection); static void expandDatabase(final Connection connection, long numBytes); static long getDatabaseSize(final Connection connection); static int bulkAdd(Iterable<Row<K, A>> rows, final String tableName, final Connection connection); static int bulkRemove(Iterable<K> objectKeys, final String tableName, final Connection connection); static int count(final Query<O> query, final String tableName, final Connection connection); static int countDistinct(final Query<O> query, final String tableName, final Connection connection); static java.sql.ResultSet search(final Query<O> query, final String tableName, final Connection connection); static java.sql.ResultSet getDistinctKeys(final Query<O> query, boolean descending, final String tableName, final Connection connection); static java.sql.ResultSet getKeysAndValues(final Query<O> query, boolean descending, final String tableName, final Connection connection); static int getCountOfDistinctKeys(final String tableName, final Connection connection); static java.sql.ResultSet getDistinctKeysAndCounts(boolean sortByKeyDescending, final String tableName, final Connection connection); static java.sql.ResultSet getAllIndexEntries(final String tableName, final Connection connection); static java.sql.ResultSet getIndexEntryByObjectKey(final K key , final String tableName, final Connection connection); static boolean contains(final K objectKey, final Query<O> query, final String tableName, final Connection connection);  }
@Test public void testContains() throws SQLException { Connection connection = null; try { ConnectionManager connectionManager = temporaryFileDatabase.getConnectionManager(true); initWithTestData(connectionManager); Equal<Car, String> equal = equal(Car.FEATURES, "abs"); connection = connectionManager.getConnection(null, noQueryOptions()); Assert.assertTrue(DBQueries.contains(1, equal, NAME, connection)); Assert.assertFalse(DBQueries.contains(4, equal, NAME, connection)); }finally { DBUtils.closeQuietly(connection); } }