Examples of org.apache.cassandra.db.marshal.AbstractType

org.apache.cassandra.db.marshal.AbstractType
Specifies a Comparator for a specific type of ByteBuffer. Note that empty ByteBuffer are used to represent "start at the beginning" or "stop at the end" arguments to get_slice, so the Comparator should always handle those values even if they normally do not represent a valid ByteBuffer for the type being compared.

            ResourceFieldSchema idxColSchema = new ResourceFieldSchema();
            idxColSchema.setName("name");
            idxColSchema.setType(getPigType(marshallers.get(0)));


            ResourceFieldSchema valSchema = new ResourceFieldSchema();
            AbstractType validator = validators.get(cdef.name);
            if (validator == null)
                validator = marshallers.get(1);
            valSchema.setName("value");
            valSchema.setType(getPigType(validator));


            innerTupleSchema.setFields(new ResourceFieldSchema[] { idxColSchema, valSchema });
            allSchemaFields.add(innerTupleField);
        }
        // bag at the end for unknown columns
        allSchemaFields.add(bagField);


        // add top-level index elements if needed
        if (usePartitionFilter)
        {
            for (ColumnDef cdef : getIndexes())
            {
                ResourceFieldSchema idxSchema = new ResourceFieldSchema();
                idxSchema.setName("index_" + new String(cdef.getName()));
                AbstractType validator = validators.get(cdef.name);
                if (validator == null)
                    validator = marshallers.get(1);
                idxSchema.setType(getPigType(validator));
                allSchemaFields.add(idxSchema);
            }

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            if (superColumnName.length == 0)
                throw new InvalidRequestException("supercolumn name must not be empty");
            if (!DatabaseDescriptor.getColumnFamilyType(keyspace, columnFamilyName).equals("Super"))
                throw new InvalidRequestException("supercolumn specified to ColumnFamily " + columnFamilyName + " containing normal columns");
        }
        AbstractType comparator = ColumnFamily.getComparatorFor(keyspace, columnFamilyName, superColumnName);
        for (byte[] name : column_names)
        {
            if (name.length > IColumn.MAX_NAME_LENGTH)
                throw new InvalidRequestException("column name length must not be greater than " + IColumn.MAX_NAME_LENGTH);
            if (name.length == 0)
                throw new InvalidRequestException("column name must not be empty");
            try
            {
                comparator.validate(name);
            }
            catch (MarshalException e)
            {
                throw new InvalidRequestException(e.getMessage());
            }

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        validateColumns(keyspace, column_parent.column_family, column_parent.super_column, column_names);
    }


    public static void validateRange(String keyspace, ColumnParent column_parent, SliceRange range) throws InvalidRequestException
    {
        AbstractType comparator = ColumnFamily.getComparatorFor(keyspace, column_parent.column_family, column_parent.super_column);
        try
        {
            comparator.validate(range.start);
            comparator.validate(range.finish);
        }
        catch (MarshalException e)
        {
            throw new InvalidRequestException(e.getMessage());
        }


        if (range.count < 0)
            throw new InvalidRequestException("get_slice requires non-negative count");


        Comparator<byte[]> orderedComparator = range.isReversed() ? comparator.getReverseComparator() : comparator;
        if (range.start.length > 0
            && range.finish.length > 0
            && orderedComparator.compare(range.start, range.finish) > 0)
        {
            throw new InvalidRequestException("range finish must come after start in the order of traversal");

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    }


    public static ColumnFamily create(String tableName, String cfName)
    {
        String columnType = DatabaseDescriptor.getColumnFamilyType(tableName, cfName);
        AbstractType comparator = DatabaseDescriptor.getComparator(tableName, cfName);
        AbstractType subcolumnComparator = DatabaseDescriptor.getSubComparator(tableName, cfName);
        return new ColumnFamily(cfName, columnType, comparator, subcolumnComparator);
    }

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        return getComparator().getClass().getCanonicalName();
    }


    String getSubComparatorName()
    {
        AbstractType subcolumnComparator = getSubComparator();
        return subcolumnComparator == null ? "" : subcolumnComparator.getClass().getCanonicalName();
    }

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    }
    
    private static String serializeRow(IteratingRow row) throws IOException
    {
        ColumnFamily cf = row.getColumnFamily();
        AbstractType comparator = cf.getComparator();
        StringBuilder json = new StringBuilder(asKey(row.getKey().key));
        
        if (cf.isSuper())
        {
            json.append("{ ");

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        catch (Exception ex)
        {
        }


        // do some writing.
        final AbstractType comp = ColumnFamily.getComparatorFor("Keyspace1", "Standard1", null);
        for (int i = 0; i < 100; i++)
        {
            RowMutation change = new RowMutation("Keyspace1", "key" + i);
            ColumnPath cp = new ColumnPath("Standard1", null, ("colb").getBytes());
            change.add(new QueryPath(cp), ("value" + i).getBytes(), 0);

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    {
        assert info.getIndexType() != null;


        // create the index CFS
        IPartitioner rowPartitioner = StorageService.getPartitioner();
        AbstractType columnComparator = (rowPartitioner instanceof OrderPreservingPartitioner || rowPartitioner instanceof ByteOrderedPartitioner)
                                        ? BytesType.instance
                                        : new LocalByPartionerType(StorageService.getPartitioner());
        final CFMetaData indexedCfMetadata = CFMetaData.newIndexMetadata(metadata, info, columnComparator);
        ColumnFamilyStore indexedCfs = ColumnFamilyStore.createColumnFamilyStore(table,
                                                                                 indexedCfMetadata.cfName,

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    {
        assert info.getIndexType() != null;


        // create the index CFS
        IPartitioner rowPartitioner = StorageService.getPartitioner();
        AbstractType columnComparator = (rowPartitioner instanceof OrderPreservingPartitioner || rowPartitioner instanceof ByteOrderedPartitioner)
                                        ? BytesType.instance
                                        : new LocalByPartionerType(StorageService.getPartitioner());
        final CFMetaData indexedCfMetadata = CFMetaData.newIndexMetadata(metadata, info, columnComparator);
        ColumnFamilyStore indexedCfs = ColumnFamilyStore.createColumnFamilyStore(table,
                                                                                 indexedCfMetadata.cfName,

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        return cf;
    }


    public static CFMetaData inflate(org.apache.cassandra.avro.CfDef cf)
    {
        AbstractType comparator;
        AbstractType subcolumnComparator = null;
        AbstractType validator;
        try
        {
            comparator = DatabaseDescriptor.getComparator(cf.comparator_type.toString());
            if (cf.subcomparator_type != null)
                subcolumnComparator = DatabaseDescriptor.getComparator(cf.subcomparator_type.toString());

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