Examples of org.apache.cassandra.db.ColumnFamily$Factory

org.apache.cassandra.db.ColumnFamily
A sorted map of columns. This represents the backing map of a colum family. Whether the implementation is thread safe or not is left to the implementing classes.


    @Test
    public void testEnumeratekeys() throws IOException
    {
        File tempSS = tempSSTableFile("Keyspace1", "Standard1");
        ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Standard1");
        SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2);
        
        // Add rowA
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("colA")), ByteBufferUtil.bytes("valA"), System.currentTimeMillis());
        writer.append(Util.dk("rowA"), cfamily);
        cfamily.clear();
        
        // Add rowB
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("colB")), ByteBufferUtil.bytes("valB"), System.currentTimeMillis());
        writer.append(Util.dk("rowB"), cfamily);
        cfamily.clear();
     
        writer.closeAndOpenReader();
        
        // Enumerate and verify
        File temp = File.createTempFile("Standard1", ".txt");

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    @Test
    public void testExportSimpleCf() throws IOException
    {
        File tempSS = tempSSTableFile("Keyspace1", "Standard1");
        ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Standard1");
        SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2);
        
        int nowInSec = (int)(System.currentTimeMillis() / 1000) + 42; //live for 42 seconds
        // Add rowA
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("colA")), ByteBufferUtil.bytes("valA"), System.currentTimeMillis());
        cfamily.addColumn(null, new ExpiringColumn(ByteBufferUtil.bytes("colExp"), ByteBufferUtil.bytes("valExp"), System.currentTimeMillis(), 42, nowInSec));
        writer.append(Util.dk("rowA"), cfamily);
        cfamily.clear();
        
        // Add rowB
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("colB")), ByteBufferUtil.bytes("valB"), System.currentTimeMillis());
        writer.append(Util.dk("rowB"), cfamily);
        cfamily.clear();


        // Add rowExclude
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("colX")), ByteBufferUtil.bytes("valX"), System.currentTimeMillis());
        writer.append(Util.dk("rowExclude"), cfamily);
        cfamily.clear();


        SSTableReader reader = writer.closeAndOpenReader();
        
        // Export to JSON and verify
        File tempJson = File.createTempFile("Standard1", ".json");

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    @Test
    public void testExportSuperCf() throws IOException
    {
        File tempSS = tempSSTableFile("Keyspace1", "Super4");
        ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Super4");
        SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2);
        
        // Add rowA
        cfamily.addColumn(new QueryPath("Super4", ByteBufferUtil.bytes("superA"), ByteBufferUtil.bytes("colA")), ByteBufferUtil.bytes("valA"), System.currentTimeMillis());
        writer.append(Util.dk("rowA"), cfamily);
        cfamily.clear();
        
        // Add rowB
        cfamily.addColumn(new QueryPath("Super4", ByteBufferUtil.bytes("superB"), ByteBufferUtil.bytes("colB")), ByteBufferUtil.bytes("valB"), System.currentTimeMillis());
        writer.append(Util.dk("rowB"), cfamily);
        cfamily.clear();


        // Add rowExclude
        cfamily.addColumn(new QueryPath("Super4", ByteBufferUtil.bytes("superX"), ByteBufferUtil.bytes("colX")), ByteBufferUtil.bytes("valX"), System.currentTimeMillis());
        writer.append(Util.dk("rowExclude"), cfamily);
        cfamily.clear();


        SSTableReader reader = writer.closeAndOpenReader();
        
        // Export to JSON and verify
        File tempJson = File.createTempFile("Super4", ".json");
        SSTableExport.export(reader, new PrintStream(tempJson.getPath()), new String[]{asHex("rowExclude")});
        
        JSONObject json = (JSONObject)JSONValue.parse(new FileReader(tempJson));
        
        JSONObject rowA = (JSONObject)json.get(asHex("rowA"));
        JSONObject superA = (JSONObject)rowA.get(cfamily.getComparator().getString(ByteBufferUtil.bytes("superA")));
        JSONArray subColumns = (JSONArray)superA.get("subColumns");
        JSONArray colA = (JSONArray)subColumns.get(0);
        JSONObject rowExclude = (JSONObject)json.get(asHex("rowExclude"));
        assert hexToBytes((String)colA.get(1)).equals(ByteBufferUtil.bytes("valA"));
        assert !(Boolean)colA.get(3);

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    @Test
    public void testRoundTripStandardCf() throws IOException, ParseException
    {
        File tempSS = tempSSTableFile("Keyspace1", "Standard1");
        ColumnFamily cfamily = ColumnFamily.create("Keyspace1", "Standard1");
        SSTableWriter writer = new SSTableWriter(tempSS.getPath(), 2);
        
        // Add rowA
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("name")), ByteBufferUtil.bytes("val"), System.currentTimeMillis());
        writer.append(Util.dk("rowA"), cfamily);
        cfamily.clear();


        // Add rowExclude
        cfamily.addColumn(new QueryPath("Standard1", null, ByteBufferUtil.bytes("name")), ByteBufferUtil.bytes("val"), System.currentTimeMillis());
        writer.append(Util.dk("rowExclude"), cfamily);
        cfamily.clear();


        SSTableReader reader = writer.closeAndOpenReader();
        
        // Export to JSON and verify
        File tempJson = File.createTempFile("Standard1", ".json");
        SSTableExport.export(reader, new PrintStream(tempJson.getPath()), new String[]{asHex("rowExclude")});
        
        // Import JSON to another SSTable file
        File tempSS2 = tempSSTableFile("Keyspace1", "Standard1");
        SSTableImport.importJson(tempJson.getPath(), "Keyspace1", "Standard1", tempSS2.getPath());


        reader = SSTableReader.open(Descriptor.fromFilename(tempSS2.getPath()));
        QueryFilter qf = QueryFilter.getNamesFilter(Util.dk("rowA"), new QueryPath("Standard1", null, null), ByteBufferUtil.bytes("name"));
        ColumnFamily cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
        assertTrue(cf != null);
        assertTrue(cf.getColumn(ByteBufferUtil.bytes("name")).value().equals(hexToBytes("76616c")));


        qf = QueryFilter.getNamesFilter(Util.dk("rowExclude"), new QueryPath("Standard1", null, null), ByteBufferUtil.bytes("name"));
        cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
        assert cf == null;
    }

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    public static String TABLENAME = "Keyspace1";
    public static String CFNAME = "Standard1";


    public static ColumnFamily createCF(long mfda, int ldt, IColumn... cols)
    {
        ColumnFamily cf = ColumnFamily.create(TABLENAME, CFNAME);
        cf.delete(ldt, mfda);
        for (IColumn col : cols)
            cf.addColumn(col);
        return cf;
    }

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        public SSTableReader write(Set<String> keys) throws IOException
        {
            Map<String, ColumnFamily> map = new HashMap<String, ColumnFamily>();
            for (String key : keys)
            {
                ColumnFamily cf = ColumnFamily.create(ksname, cfname);
                cf.addColumn(new Column(ByteBufferUtil.bytes(key), ByteBufferUtil.bytes(key), 0));
                map.put(key, cf);
            }
            return write(map);
        }

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        // Verify results
        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getIdentityFilter(Util.dk("rowA"), new QueryPath("Standard1"));
        IColumnIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = iter.getColumnFamily();
        while (iter.hasNext()) cf.addColumn(iter.next());
        assert cf.getColumn(ByteBufferUtil.bytes("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(ByteBufferUtil.bytes("colAA")) instanceof DeletedColumn);
        IColumn expCol = cf.getColumn(ByteBufferUtil.bytes("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringColumn;
        assert ((ExpiringColumn)expCol).getTimeToLive() == 42 && expCol.getLocalDeletionTime() == 2000000000;
    }

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        SSTableImport.importJson(jsonUrl, "Keyspace1", "Super4", tempSS.getPath());
        
        // Verify results
        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getNamesFilter(Util.dk("rowA"), new QueryPath("Super4", null, null), ByteBufferUtil.bytes("superA"));
        ColumnFamily cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
        IColumn superCol = cf.getColumn(ByteBufferUtil.bytes("superA"));
        assert superCol != null;
        assert superCol.getSubColumns().size() > 0;
        IColumn subColumn = superCol.getSubColumn(ByteBufferUtil.bytes("colAA"));
        assert subColumn.value().equals(hexToBytes("76616c75654141"));
    }

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    public void testImportUnsortedMode() throws IOException
    {
        String jsonUrl = getClass().getClassLoader().getResource("UnsortedSuperCF.json").getPath();
        File tempSS = tempSSTableFile("Keyspace1", "Super4");


        ColumnFamily columnFamily = ColumnFamily.create("Keyspace1", "Super4");
        IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();


        SSTableImport.setKeyCountToImport(3);
        int result = SSTableImport.importSorted(jsonUrl, columnFamily, tempSS.getPath(), partitioner);
        assert result == -1;

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        // anyway, so the odds of a "tombstones consuming memory indefinitely" problem are minimal.
        // See https://issues.apache.org/jira/browse/CASSANDRA-3921 for more discussion.
        if (CacheService.instance.rowCache.isPutCopying())
            return;


        ColumnFamily cachedRow = cfs.getRawCachedRow(key);
        if (cachedRow != null)
            ColumnFamilyStore.removeDeleted(cachedRow, gcBefore);
    }

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