Examples with Rnd io.questdb.std.Rnd used on opensource projects

Example 56 with Rnd

use of io.questdb.std.Rnd in project questdb by bluestreak01.

the class LineUDPSenderMain method main.

public static void main(String[] args) {
    final long count = 50_000_000;
    String hostIPv4 = "127.0.0.1";
    // 8089 influx
    int port = 9009;
    int ttl = 1;
    // 1024 max
    int bufferCapacity = 1024;
    final Rnd rnd = new Rnd();
    long start = System.nanoTime();
    try (LineUdpSender sender = new LineUdpSender(0, Net.parseIPv4(hostIPv4), port, bufferCapacity, ttl)) {
        for (int i = 0; i < count; i++) {
            sender.metric("weather").tag("location", "london").tag("by", "quest").field("temp", rnd.nextPositiveLong()).field("ok", rnd.nextPositiveInt()).$(Os.currentTimeMicros() * 1000);
        }
        sender.flush();
    }
    System.out.println("Actual rate: " + (count * 1_000_000_000L / (System.nanoTime() - start)));
}

Example 57 with Rnd

use of io.questdb.std.Rnd in project questdb by bluestreak01.

the class LastDateGroupByFunctionFactoryTest method testNonNull.

@Test
public void testNonNull() throws SqlException {
    compiler.compile("create table tab (f date)", sqlExecutionContext);
    final Rnd rnd = new Rnd();
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        for (int i = 100; i > 10; i--) {
            TableWriter.Row r = w.newRow();
            r.putLong(0, rnd.nextLong());
            r.append();
        }
        w.commit();
    }
    try (RecordCursorFactory factory = compiler.compile("select last(f) from tab", sqlExecutionContext).getRecordCursorFactory()) {
        try (RecordCursor cursor = factory.getCursor(sqlExecutionContext)) {
            Record record = cursor.getRecord();
            Assert.assertEquals(1, cursor.size());
            Assert.assertTrue(cursor.hasNext());
            Assert.assertEquals(-6919361415374675248L, record.getLong(0));
        }
    }
}

Example 58 with Rnd

use of io.questdb.std.Rnd in project questdb by bluestreak01.

the class EqGeoHashGeoHashFunctionFactoryTest method testSameTypeSameNonConstByte.

@Test
public void testSameTypeSameNonConstByte() {
    byte value = new Rnd().nextByte();
    createEqFunctionNonConstAndAssert(value, ColumnType.getGeoHashTypeWithBits(2), value, ColumnType.getGeoHashTypeWithBits(2), true);
}

Example 59 with Rnd

use of io.questdb.std.Rnd in project questdb by bluestreak01.

the class FirstLongGroupByFunctionFactoryTest method testFirstNull.

@Test
public void testFirstNull() throws SqlException {
    compiler.compile("create table tab (f long)", sqlExecutionContext);
    final Rnd rnd = new Rnd();
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        TableWriter.Row r = w.newRow();
        r.append();
        for (int i = 100; i > 10; i--) {
            r = w.newRow();
            r.putLong(0, rnd.nextLong());
            r.append();
        }
        w.commit();
    }
    try (RecordCursorFactory factory = compiler.compile("select first(f) from tab", sqlExecutionContext).getRecordCursorFactory()) {
        try (RecordCursor cursor = factory.getCursor(sqlExecutionContext)) {
            Record record = cursor.getRecord();
            Assert.assertEquals(1, cursor.size());
            Assert.assertTrue(cursor.hasNext());
            Assert.assertEquals(Numbers.LONG_NaN, record.getLong(0));
        }
    }
}

Example 60 with Rnd

use of io.questdb.std.Rnd in project questdb by bluestreak01.

the class FirstTimestampGroupByFunctionFactoryTest method testFirstNull.

@Test
public void testFirstNull() throws SqlException {
    compiler.compile("create table tab (f timestamp)", sqlExecutionContext);
    final Rnd rnd = new Rnd();
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        TableWriter.Row r = w.newRow();
        r.append();
        for (int i = 100; i > 10; i--) {
            r = w.newRow();
            r.putLong(0, rnd.nextLong());
            r.append();
        }
        w.commit();
    }
    try (RecordCursorFactory factory = compiler.compile("select first(f) from tab", sqlExecutionContext).getRecordCursorFactory()) {
        try (RecordCursor cursor = factory.getCursor(sqlExecutionContext)) {
            Record record = cursor.getRecord();
            Assert.assertEquals(1, cursor.size());
            Assert.assertTrue(cursor.hasNext());
            Assert.assertEquals(Numbers.LONG_NaN, record.getTimestamp(0));
        }
    }
}