Examples with Record com.questdb.common.Record used on opensource projects

Example 21 with Record

use of com.questdb.common.Record in project questdb by bluestreak01.

the class TableReadFailTest method testReloadTimeout.

@Test
public void testReloadTimeout() throws Exception {
    TestUtils.assertMemoryLeak(() -> {
        try (TableModel model = new TableModel(configuration, "x", PartitionBy.NONE).col("a", ColumnType.INT).col("b", ColumnType.LONG).timestamp()) {
            CairoTestUtils.create(model);
        }
        try (Path path = new Path();
            TableReader reader = new TableReader(configuration, "x");
            ReadWriteMemory mem = new ReadWriteMemory()) {
            final Rnd rnd = new Rnd();
            final int N = 1000;
            // home path at txn file
            path.of(configuration.getRoot()).concat("x").concat(TableUtils.TXN_FILE_NAME).$();
            try (TableWriter w = new TableWriter(configuration, "x")) {
                for (int i = 0; i < N; i++) {
                    TableWriter.Row r = w.newRow(0);
                    r.putInt(0, rnd.nextInt());
                    r.putLong(1, rnd.nextLong());
                    r.append();
                }
                w.commit();
            }
            Assert.assertTrue(reader.reload());
            RecordCursor cursor = reader.getCursor();
            rnd.reset();
            int count = 0;
            while (cursor.hasNext()) {
                Record r = cursor.next();
                Assert.assertEquals(rnd.nextInt(), r.getInt(0));
                Assert.assertEquals(rnd.nextLong(), r.getLong(1));
                count++;
            }
            Assert.assertEquals(N, count);
            mem.of(configuration.getFilesFacade(), path, configuration.getFilesFacade().getPageSize());
            // keep txn file parameters
            long offset = configuration.getFilesFacade().length(mem.getFd());
            long txn = mem.getLong(TableUtils.TX_OFFSET_TXN);
            // corrupt the txn file
            mem.jumpTo(TableUtils.TX_OFFSET_TXN);
            mem.putLong(123);
            mem.jumpTo(offset);
            mem.close();
            // this should time out
            try {
                reader.reload();
                Assert.fail();
            } catch (CairoException e) {
                TestUtils.assertContains(e.getMessage(), "timeout");
            }
            // restore txn file to its former glory
            mem.of(configuration.getFilesFacade(), path, configuration.getFilesFacade().getPageSize());
            mem.jumpTo(TableUtils.TX_OFFSET_TXN);
            mem.putLong(txn);
            mem.jumpTo(offset);
            mem.close();
            mem.close();
            // make sure reload functions correctly
            Assert.assertFalse(reader.reload());
            try (TableWriter w = new TableWriter(configuration, "x")) {
                // add more data
                for (int i = 0; i < N; i++) {
                    TableWriter.Row r = w.newRow(0);
                    r.putInt(0, rnd.nextInt());
                    r.putLong(1, rnd.nextLong());
                    r.append();
                }
                w.commit();
            }
            // does positive reload work?
            Assert.assertTrue(reader.reload());
            // can reader still see correct data?
            cursor = reader.getCursor();
            rnd.reset();
            count = 0;
            while (cursor.hasNext()) {
                Record r = cursor.next();
                Assert.assertEquals(rnd.nextInt(), r.getInt(0));
                Assert.assertEquals(rnd.nextLong(), r.getLong(1));
                count++;
            }
            Assert.assertEquals(2 * N, count);
        }
    });
}

Example 22 with Record

use of com.questdb.common.Record in project questdb by bluestreak01.

the class TableReaderRecordCursorFactoryTest method testFactory.

@Test
public void testFactory() throws Exception {
    TestUtils.assertMemoryLeak(() -> {
        final int N = 100;
        // separate two symbol columns with primitive. It will make problems apparent if index does not shift correctly
        try (TableModel model = new TableModel(configuration, "x", PartitionBy.DAY).col("a", ColumnType.STRING).col("b", ColumnType.SYMBOL).indexed(true, N / 4).col("i", ColumnType.INT).col("c", ColumnType.SYMBOL).indexed(true, N / 4).timestamp()) {
            CairoTestUtils.create(model);
        }
        final Rnd rnd = new Rnd();
        final String[] symbols = new String[N];
        final int M = 1000;
        final long increment = 1000000 * 60L * 10;
        for (int i = 0; i < N; i++) {
            symbols[i] = rnd.nextChars(8).toString();
        }
        rnd.reset();
        // prepare the data
        long timestamp = 0;
        try (TableWriter writer = new TableWriter(configuration, "x")) {
            for (int i = 0; i < M; i++) {
                TableWriter.Row row = writer.newRow(timestamp += increment);
                row.putStr(0, rnd.nextChars(20));
                row.putSym(1, symbols[rnd.nextPositiveInt() % N]);
                row.putInt(2, rnd.nextInt());
                row.putSym(3, symbols[rnd.nextPositiveInt() % N]);
                row.append();
            }
            writer.commit();
        }
        try (Engine engine = new Engine(configuration)) {
            RecordCursorFactory factory = new TableReaderRecordCursorFactory(engine, "x");
            long count = 0;
            RecordCursor cursor = factory.getCursor();
            try {
                rnd.reset();
                while (cursor.hasNext()) {
                    Record record = cursor.next();
                    TestUtils.assertEquals(rnd.nextChars(20), record.getFlyweightStr(0));
                    TestUtils.assertEquals(symbols[rnd.nextPositiveInt() % N], record.getSym(1));
                    Assert.assertEquals(rnd.nextInt(), record.getInt(2));
                    TestUtils.assertEquals(symbols[rnd.nextPositiveInt() % N], record.getSym(3));
                    count++;
                }
            } finally {
                cursor.releaseCursor();
            }
            Assert.assertEquals(0, engine.getBusyReaderCount());
            Assert.assertEquals(M, count);
        }
    });
}

Example 23 with Record

use of com.questdb.common.Record in project questdb by bluestreak01.

the class AbstractTest method assertSymbol.

public void assertSymbol(String query) throws ParserException {
    try (RecordSource src = compiler.compile(getFactory(), query)) {
        RecordCursor cursor = src.prepareCursor(getFactory());
        try {
            SymbolTable tab = cursor.getStorageFacade().getSymbolTable(0);
            while (cursor.hasNext()) {
                Record r = cursor.next();
                TestUtils.assertEquals(r.getSym(0), tab.value(r.getInt(0)));
            }
        } finally {
            cursor.releaseCursor();
        }
    }
}

Example 24 with Record

use of com.questdb.common.Record in project questdb by bluestreak01.

the class Generator method fetchCursor.

public static int fetchCursor(RecordCursor cursor) {
    int count = 0;
    while (cursor.hasNext()) {
        Record r = cursor.next();
        r.getInt(0);
        r.getFlyweightStr(1);
        r.getDate(2);
        count++;
    }
    return count;
}

Example 25 with Record

use of com.questdb.common.Record in project questdb by bluestreak01.

the class AvgAggregator method computeAvg.

private void computeAvg(DirectMapValues values) {
    long ref = values.getLong(oListHead);
    if (ref == -1) {
        // no partial sums found, compute average of what we have accumulated so far
        values.putDouble(oAvg, values.getDouble(oSum) / (double) values.getLong(oLocalTotal));
    } else {
        // there are partial sums
        // compute average of last partial sum (which hasn't been added to record list)
        double total = (double) values.getLong(oTotal);
        double count = (double) values.getLong(oLocalTotal);
        double avg = (count / total) * (values.getDouble(oSum) / count);
        // add partial sums together using weight of each sum
        // weight = partial count / total count
        records.of(ref);
        while (records.hasNext()) {
            Record r = records.next();
            count = r.getLong(1);
            avg += (count / total) * (r.getDouble(0) / count);
        }
        values.putDouble(oAvg, avg);
    }
}