Examples with TableWriter io.questdb.cairo.TableWriter used on opensource projects

Example 26 with TableWriter

use of io.questdb.cairo.TableWriter 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 27 with TableWriter

use of io.questdb.cairo.TableWriter in project questdb by bluestreak01.

the class LastDoubleGroupByFunctionFactoryTest method testAllNull.

@Test
public void testAllNull() throws SqlException {
    compiler.compile("create table tab (f double)", sqlExecutionContext);
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        for (int i = 100; i > 10; i--) {
            TableWriter.Row r = w.newRow();
            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.assertTrue(Double.isNaN(record.getDouble(0)));
        }
    }
}

Example 28 with TableWriter

use of io.questdb.cairo.TableWriter in project questdb by bluestreak01.

the class LastLongGroupByFunctionFactoryTest method testSomeNull.

@Test
public void testSomeNull() throws SqlException {
    compiler.compile("create table tab (f long)", sqlExecutionContext);
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        for (int i = 100; i > 10; i--) {
            TableWriter.Row r = w.newRow();
            if (i % 4 == 0) {
                r.putLong(0, i);
            }
            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(Numbers.LONG_NaN, record.getLong(0));
        }
    }
}

Example 29 with TableWriter

use of io.questdb.cairo.TableWriter in project questdb by bluestreak01.

the class LastLongGroupByFunctionFactoryTest method testAllNull.

@Test
public void testAllNull() throws SqlException {
    compiler.compile("create table tab (f long)", sqlExecutionContext);
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        for (int i = 100; i > 10; i--) {
            TableWriter.Row r = w.newRow();
            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(Numbers.LONG_NaN, record.getLong(0));
        }
    }
}

Example 30 with TableWriter

use of io.questdb.cairo.TableWriter in project questdb by bluestreak01.

the class LastTimestampGroupByFunctionFactoryTest method testAllNull.

@Test
public void testAllNull() throws SqlException {
    compiler.compile("create table tab (f timestamp)", sqlExecutionContext);
    try (TableWriter w = engine.getWriter(sqlExecutionContext.getCairoSecurityContext(), "tab", "testing")) {
        for (int i = 100; i > 10; i--) {
            TableWriter.Row r = w.newRow();
            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(Numbers.LONG_NaN, record.getTimestamp(0));
        }
    }
}