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

Example 21 with Rnd

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

the class LastDoubleGroupByFunctionFactoryTest method testNonNull.

@Test
public void testNonNull() throws SqlException {
    compiler.compile("create table tab (f double)", 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.putDouble(0, rnd.nextDouble());
            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(0.3901731258748704, record.getDouble(0), 0.0001);
        }
    }
}

Example 22 with Rnd

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

the class MaxDoubleGroupByFunctionFactoryTest method testNonNull.

@Test
public void testNonNull() throws SqlException {
    compiler.compile("create table tab (f double)", 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.putDouble(0, rnd.nextDouble());
            r.append();
        }
        w.commit();
    }
    try (RecordCursorFactory factory = compiler.compile("select max(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(0.9856290845874263, record.getDouble(0), 0.0001);
        }
    }
}

Example 23 with Rnd

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

the class FirstDoubleGroupByFunctionFactoryTest method testNonNull.

@Test
public void testNonNull() throws SqlException {
    compiler.compile("create table tab (f double)", 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.putDouble(0, rnd.nextDouble());
            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(0.6607777894187332, record.getDouble(0), 0.0001);
        }
    }
}

Example 24 with Rnd

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

the class EqGeoHashGeoHashFunctionFactoryTest method testSameTypeSameNonConstShort.

@Test
public void testSameTypeSameNonConstShort() {
    short value = new Rnd().nextShort();
    createEqFunctionNonConstAndAssert(value, ColumnType.getGeoHashTypeWithBits(15), value + 1, ColumnType.getGeoHashTypeWithBits(15), false);
}

Example 25 with Rnd

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

the class LineTCPSenderMain method main.

public static void main(String[] args) {
    final long count = 10_000_000;
    String hostIPv4 = "127.0.0.1";
    // 8089 influx
    int port = 9009;
    int bufferCapacity = 256 * 1024;
    final Rnd rnd = new Rnd();
    long start = System.nanoTime();
    try (LineTcpSender sender = new LineTcpSender(Net.parseIPv4(hostIPv4), port, bufferCapacity)) {
        for (int i = 0; i < count; i++) {
            // if ((i & 0x1) == 0) {
            sender.metric("weather");
            // } else {
            // sender.metric("weather2");
            // }
            sender.tag("location", "london").tag("by", rnd.nextString(5)).field("temp", rnd.nextPositiveLong()).field("ok", rnd.nextPositiveInt()).$(rnd.nextLong(5000000000000L));
        // sender.$();
        }
        sender.flush();
    }
    System.out.println("Actual rate: " + (count * 1_000_000_000L / (System.nanoTime() - start)));
}