Oracle Coherence for C++ API
Release 3.6.0.0
E15728-01

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# coherence/util/aggregator/Count.hpp

    00001 /*
    00002 * Count.hpp
    00003 *
    00004 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
    00005 *
    00006 * Oracle is a registered trademarks of Oracle Corporation and/or its
    00007 * affiliates.
    00008 *
    00009 * This software is the confidential and proprietary information of Oracle
    00010 * Corporation. You shall not disclose such confidential and proprietary
    00011 * information and shall use it only in accordance with the terms of the
    00012 * license agreement you entered into with Oracle.
    00013 *
    00014 * This notice may not be removed or altered.
    00015 */
    00016 #ifndef COH_COUNT_HPP
    00017 #define COH_COUNT_HPP
    00018
    00019 #include "coherence/lang.ns"
    00020
    00021 #include "coherence/io/pof/PofReader.hpp"
    00022 #include "coherence/io/pof/PofWriter.hpp"
    00023 #include "coherence/io/pof/PortableObject.hpp"
    00024 #include "coherence/util/InvocableMap.hpp"
    00025
    00026 COH_OPEN_NAMESPACE3(coherence,util,aggregator)
    00027
    00028 using coherence::io::pof::PofReader;
    00029 using coherence::io::pof::PofWriter;
    00030 using coherence::io::pof::PortableObject;
    00031
    00032
    00033 /**
    00034 * Calculates a number of values in an entry set.
    00035 *
    00036 * @author djl  2008.05.12
    00037 */
    00038 class COH_EXPORT Count
    00039     : public class_spec<Count,
    00040         extends<Object>,
    00041         implements<PortableObject, InvocableMap::ParallelAwareAggregator> >
    00042     {
    00043     friend class factory<Count>;
    00044
    00045     // ----- constructors ---------------------------------------------------
    00046
    00047     protected:
    00048         /**
    00049         * Default constructor (necessary for the PortableObject interface).
    00050         */
    00051         Count();
    00052
    00053
    00054     // ----- EntryAggregator interface --------------------------------------
    00055
    00056     public:
    00057         /**
    00058         * {@inheritDoc}
    00059         */
    00060         virtual Object::Holder aggregate(Set::View vSetEntries);
    00061
    00062
    00063     // ----- ParallelAwareAggregator interface ------------------------------
    00064
    00065         /**
    00066         * {@inheritDoc}
    00067         */
    00068         virtual InvocableMap::EntryAggregator::Handle getParallelAggregator();
    00069
    00070         /**
    00071         * {@inheritDoc}
    00072         */
    00073         virtual Object::Holder aggregateResults(
    00074                     Collection::View vCollResults);
    00075
    00076
    00077     // ----- PortableObject interface ---------------------------------------
    00078
    00079     public:
    00080         /**
    00081         * {@inheritDoc}
    00082         */
    00083         virtual void readExternal(PofReader::Handle hIn);
    00084
    00085         /**
    00086         * {@inheritDoc}
    00087         */
    00088         virtual void writeExternal(PofWriter::Handle hOut) const;
    00089     };
    00090
    00091 COH_CLOSE_NAMESPACE3
    00092
    00093 #endif // COH_COUNT_HPP

Copyright © 2000, 2010, Oracle and/or its affiliates. All rights reserved.