Oracle Coherence for C++ API
Release 3.6.1.0
E18813-01

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# coherence/util/filter/EqualsFilter.hpp

    00001 /*
    00002 * EqualsFilter.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_EQUALS_FILTER_HPP
    00017 #define COH_EQUALS_FILTER_HPP
    00018
    00019 #include "coherence/lang.ns"
    00020
    00021 #include "coherence/util/ValueExtractor.hpp"
    00022 #include "coherence/util/filter/ComparisonFilter.hpp"
    00023 #include "coherence/util/filter/IndexAwareFilter.hpp"
    00024
    00025 COH_OPEN_NAMESPACE3(coherence,util,filter)
    00026
    00027
    00028 /**
    00029 * Filter which compares the result of a method invocation with a value for
    00030 * equality.
    00031 *
    00032 * @author djl  2008.03.23
    00033 */
    00034 class COH_EXPORT EqualsFilter
    00035     : public class_spec<EqualsFilter,
    00036         extends<ComparisonFilter>,
    00037         implements<IndexAwareFilter> >
    00038     {
    00039     friend class factory<EqualsFilter>;
    00040
    00041     // ----- constructors ---------------------------------------------------
    00042
    00043     protected:
    00044         /**
    00045         * Default constructor (necessary for the PortableObject interface).
    00046         */
    00047         EqualsFilter();
    00048
    00049         /**
    00050         * Construct an EqualsFilter for testing equality.
    00051         *
    00052         * @param vValueExtractor  the ValueExtractor to use by this filter
    00053         * @param vValue           the object to compare the result with
    00054         */
    00055         EqualsFilter(ValueExtractor::View vValueExtractor,
    00056                 Object::View vValue);
    00057
    00058
    00059     // ----- ExtractorFilter interface --------------------------------------
    00060
    00061     protected:
    00062         /**
    00063         * {@inheritDoc}
    00064         */
    00065         virtual bool evaluateExtracted(Object::View vExtracted) const;
    00066
    00067
    00068     // ----- IndexAwareFilter interface -------------------------------------
    00069
    00070     public:
    00071         /**
    00072         * {@inheritDoc}
    00073         */
    00074         virtual size32_t calculateEffectiveness(Map::View vMapIndexes,
    00075                 Set::View vSetKeys) const;
    00076
    00077         /**
    00078         * {@inheritDoc}
    00079         */
    00080         virtual Filter::View applyIndex(Map::View vMapIndexes,
    00081                 Set::Handle hSetKeys) const;
    00082     };
    00083
    00084 COH_CLOSE_NAMESPACE3
    00085
    00086 #endif // COH_EQUALS_FILTER_HPP

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