Examples with FullTableScanPredicate herddb.model.FullTableScanPredicate used on opensource projects

Example 1 with FullTableScanPredicate

use of herddb.model.FullTableScanPredicate in project herddb by diennea.

the class BigTableScanTest method bigTableScan.

@Test
public void bigTableScan() throws Exception {
    int testSize = 5000;
    String nodeId = "localhost";
    try (DBManager manager = new DBManager("localhost", new MemoryMetadataStorageManager(), new MemoryDataStorageManager(), new MemoryCommitLogManager(), null, null)) {
        manager.setMaxMemoryReference(128 * 1024);
        manager.setMaxLogicalPageSize(32 * 1024);
        manager.setMaxPKUsedMemory(manager.getMaxLogicalPageSize() * 2);
        manager.start();
        CreateTableSpaceStatement st1 = new CreateTableSpaceStatement("tblspace1", Collections.singleton(nodeId), nodeId, 1, 0, 0);
        manager.executeStatement(st1, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        manager.waitForTablespace("tblspace1", 10000);
        Table table = Table.builder().tablespace("tblspace1").name("t1").column("id", ColumnTypes.STRING).column("name", ColumnTypes.STRING).primaryKey("id").build();
        CreateTableStatement st2 = new CreateTableStatement(table);
        manager.executeStatement(st2, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION);
        for (int i = 0; i < testSize; i++) {
            InsertStatement insert = new InsertStatement(table.tablespace, table.name, RecordSerializer.makeRecord(table, "id", "k" + i, "name", "testname" + i));
            assertEquals(1, manager.executeUpdate(insert, StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION).getUpdateCount());
        }
        TableManagerStats stats = manager.getTableSpaceManager(table.tablespace).getTableManager(table.name).getStats();
        assertEquals(testSize, stats.getTablesize());
        assertEquals(2, stats.getLoadedpages());
        manager.checkpoint();
        try (DataScanner scan = manager.scan(new ScanStatement(table.tablespace, table, new FullTableScanPredicate()), StatementEvaluationContext.DEFAULT_EVALUATION_CONTEXT(), TransactionContext.NO_TRANSACTION)) {
            AtomicInteger count = new AtomicInteger();
            scan.forEach(tuple -> {
                count.incrementAndGet();
            });
            assertEquals(testSize, count.get());
        }
        assertEquals(testSize, stats.getTablesize());
    }
}