test/unit/org/apache/cassandra/db/filter/ColumnFilterTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.cassandra.db.filter;

import org.junit.Test;

import junit.framework.Assert;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.ColumnDefinition;
import org.apache.cassandra.db.marshal.Int32Type;
import org.apache.cassandra.dht.Murmur3Partitioner;
import org.apache.cassandra.io.util.DataInputBuffer;
import org.apache.cassandra.io.util.DataInputPlus;
import org.apache.cassandra.io.util.DataOutputBuffer;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.utils.ByteBufferUtil;

public class ColumnFilterTest
{
    final static ColumnFilter.Serializer serializer = new ColumnFilter.Serializer();

    @Test
    public void columnFilterSerialisationRoundTrip() throws Exception
    {
        CFMetaData metadata = CFMetaData.Builder.create("ks", "table")
                                                .withPartitioner(Murmur3Partitioner.instance)
                                                .addPartitionKey("pk", Int32Type.instance)
                                                .addClusteringColumn("ck", Int32Type.instance)
                                                .addRegularColumn("v1", Int32Type.instance)
                                                .addRegularColumn("v2", Int32Type.instance)
                                                .addRegularColumn("v3", Int32Type.instance)
                                                .build();

        ColumnDefinition v1 = metadata.getColumnDefinition(ByteBufferUtil.bytes("v1"));

        testRoundTrip(ColumnFilter.all(metadata), metadata, MessagingService.VERSION_30);
        testRoundTrip(ColumnFilter.all(metadata), metadata, MessagingService.VERSION_3014);

        testRoundTrip(ColumnFilter.selection(metadata.partitionColumns().without(v1)), metadata, MessagingService.VERSION_30);
        testRoundTrip(ColumnFilter.selection(metadata.partitionColumns().without(v1)), metadata, MessagingService.VERSION_3014);

        testRoundTrip(ColumnFilter.selection(metadata, metadata.partitionColumns().without(v1)), metadata, MessagingService.VERSION_30);
        testRoundTrip(ColumnFilter.selection(metadata, metadata.partitionColumns().without(v1)), metadata, MessagingService.VERSION_3014);
    }

    static void testRoundTrip(ColumnFilter columnFilter, CFMetaData metadata, int version) throws Exception
    {
        DataOutputBuffer output = new DataOutputBuffer();
        serializer.serialize(columnFilter, output, version);
        Assert.assertEquals(serializer.serializedSize(columnFilter, version), output.position());
        DataInputPlus input = new DataInputBuffer(output.buffer(), false);
        Assert.assertEquals(serializer.deserialize(input, version, metadata), columnFilter);
    }
}