Examples of com.netflix.astyanax.serializers.AbstractSerializer

Package com.netflix.astyanax.serializers

Examples of com.netflix.astyanax.serializers.AbstractSerializer

com.netflix.astyanax.serializers.AbstractSerializer
A base class for serializer implementations. Takes care of the default implementations of to/fromBytesList and to/fromBytesMap. Extenders of this class only need to implement toByteBuffer and fromByteBuffer. @author Ed Anuff @param < T>

    }


    // todo: this could be the basis for every rollup read method.
    // todo: A better interface may be to pass the serializer in instead of the class type.
    public <T extends Rollup> Points<T> getDataToRoll(Class<T> type, Locator locator, Range range, ColumnFamily<Locator, Long> cf) throws IOException {
        AbstractSerializer serializer = NumericSerializer.serializerFor(type);
        // special cases. :( the problem here is that the normal full res serializer returns Number instances instead of
        // SimpleNumber instances.
        // todo: this logic will only become more complicated. It needs to be in its own method and the serializer needs
        // to be known before we ever get to this method (see above comment).
        if (cf == CassandraModel.CF_METRICS_FULL) {

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        Points points = new Points();
        ColumnList<Long> results = getColumnsFromDB(locator, CF, range);
        
        // todo: this will not work when we cannot derive data type from granularity. we will need to know what kind of
        // data we are asking for and use a specific reader method.
        AbstractSerializer serializer = NumericSerializer.serializerFor(RollupType.classOf(rollupType, gran));


        for (Column<Long> column : results) {
            try {
                points.add(pointFromColumn(column, gran, serializer));
            } catch (RuntimeException ex) {

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    private Points getPointsFromColumns(ColumnList<Long> columnList, RollupType rollupType,
                                        DataType dataType, Granularity gran) {
        Points points = new Points();


        AbstractSerializer serializer = serializerFor(rollupType, dataType, gran);
        for (Column<Long> column : columnList) {
            points.add(new Points.Point(column.getName(), column.getValue(serializer)));
        }


        return points;

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                log.warn(ex.getMessage(), ex);
                ttl = (int)SafetyTtlProvider.getInstance().getSafeTTL(
                        writeContext.getGranularity(),
                        writeContext.getRollup().getRollupType()).toSeconds();
            }
            AbstractSerializer serializer = NumericSerializer.serializerFor(rollup.getClass());
            try {
                mb.withRow(writeContext.getDestinationCF(), writeContext.getLocator())
                        .putColumn(writeContext.getTimestamp(),
                                rollup,
                                serializer,

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    @Test(expected = SerializationException.class)
    public void testCannotRoundtripBytes() throws Throwable {
        try {
            byte[] expected = new byte[] {1,2,3,4,5};
            AbstractSerializer ser = NumericSerializer.serializerFor(SimpleNumber.class);
            byte[] actual = (byte[])ser.fromByteBuffer(ser.toByteBuffer(expected));
            Assert.assertArrayEquals(expected, actual);
        } catch (RuntimeException ex) {
            throw ex.getCause();
        }
    }

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    // ok. while we're out it, let's test serialization. Just for fun. The reasoning is that these metrics
    // follow a different creation path that what we currently have in tests.
    private static void ensureSerializability(Collection<PreaggregatedMetric> metrics) {
        for (PreaggregatedMetric metric : metrics) {
            AbstractSerializer serializer = NumericSerializer.serializerFor(metric.getMetricValue().getClass());
            serializer.toByteBuffer(metric.getMetricValue());
        }
    }

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