[188] | 1 | /*
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| 2 | * The Apache Software License, Version 1.1
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| 3 | *
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| 4 | * Copyright (c) 2001-2003 The Apache Software Foundation. All rights
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| 5 | * reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | *
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | *
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| 14 | * 2. Redistributions in binary form must reproduce the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer in
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| 16 | * the documentation and/or other materials provided with the
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| 17 | * distribution.
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| 18 | *
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| 19 | * 3. The end-user documentation included with the redistribution,
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| 20 | * if any, must include the following acknowledgment:
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| 21 | * "This product includes software developed by the
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| 22 | * Apache Software Foundation (http://www.apache.org/)."
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| 23 | * Alternately, this acknowledgment may appear in the software itself,
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| 24 | * if and wherever such third-party acknowledgments normally appear.
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| 25 | *
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| 26 | * 4. The names "Xerces" and "Apache Software Foundation" must
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| 27 | * not be used to endorse or promote products derived from this
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| 28 | * software without prior written permission. For written
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| 29 | * permission, please contact apache\@apache.org.
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| 30 | *
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| 31 | * 5. Products derived from this software may not be called "Apache",
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| 32 | * nor may "Apache" appear in their name, without prior written
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| 33 | * permission of the Apache Software Foundation.
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| 34 | *
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| 35 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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| 36 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 37 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 38 | * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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| 39 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| 40 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| 41 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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| 42 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 43 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 44 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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| 45 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 46 | * SUCH DAMAGE.
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| 47 | * ====================================================================
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| 48 | *
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| 49 | * This software consists of voluntary contributions made by many
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| 50 | * individuals on behalf of the Apache Software Foundation, and was
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| 51 | * originally based on software copyright (c) 2001, International
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| 52 | * Business Machines, Inc., http://www.ibm.com . For more information
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| 53 | * on the Apache Software Foundation, please see
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| 54 | * <http://www.apache.org/>.
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| 55 | */
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| 56 |
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| 57 | /*
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| 58 | * $Id: ValueStoreCache.hpp,v 1.6 2003/05/16 21:43:22 knoaman Exp $
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| 59 | */
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| 60 |
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| 61 | #if !defined(VALUESTORECACHE_HPP)
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| 62 | #define VALUESTORECACHE_HPP
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| 63 |
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| 64 | /**
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| 65 | * This class is used to store the values for identity constraints.
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| 66 | *
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| 67 | * Sketch of algorithm:
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| 68 | * - When a constraint is first encountered, its values are stored in the
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| 69 | * (local) fIC2ValueStoreMap;
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| 70 | * - Once it is validated (i.e., wen it goes out of scope), its values are
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| 71 | * merged into the fGlobalICMap;
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| 72 | * - As we encounter keyref's, we look at the global table to validate them.
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| 73 | * - Validation always occurs against the fGlobalIDConstraintMap (which
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| 74 | * comprises all the "eligible" id constraints). When an endelement is
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| 75 | * found, this Hashtable is merged with the one below in the stack. When a
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| 76 | * start tag is encountered, we create a new fGlobalICMap.
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| 77 | * i.e., the top of the fGlobalIDMapStack always contains the preceding
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| 78 | * siblings' eligible id constraints; the fGlobalICMap contains
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| 79 | * descendants+self. Keyrefs can only match descendants+self.
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| 80 | */
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| 81 |
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| 82 | // ---------------------------------------------------------------------------
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| 83 | // Includes
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| 84 | // ---------------------------------------------------------------------------
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| 85 | #include <xercesc/util/RefVectorOf.hpp>
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| 86 | #include <xercesc/util/RefHashTableOf.hpp>
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| 87 | #include <xercesc/util/RefHash2KeysTableOf.hpp>
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| 88 | #include <xercesc/util/RefStackOf.hpp>
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| 89 | #include <xercesc/validators/schema/identity/IdentityConstraint.hpp>
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| 90 | #include <xercesc/validators/schema/identity/IC_Field.hpp>
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| 91 |
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| 92 | XERCES_CPP_NAMESPACE_BEGIN
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| 93 |
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| 94 | // ---------------------------------------------------------------------------
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| 95 | // Forward Declcaration
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| 96 | // ---------------------------------------------------------------------------
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| 97 | class ValueStore;
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| 98 | class SchemaElementDecl;
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| 99 | class XMLScanner;
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| 100 |
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| 101 |
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| 102 | class VALIDATORS_EXPORT ValueStoreCache : public XMemory
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| 103 | {
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| 104 | public:
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| 105 | // -----------------------------------------------------------------------
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| 106 | // Constructors/Destructor
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| 107 | // -----------------------------------------------------------------------
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| 108 | ValueStoreCache(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
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| 109 | ~ValueStoreCache();
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| 110 |
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| 111 | // -----------------------------------------------------------------------
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| 112 | // Setter Methods
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| 113 | // -----------------------------------------------------------------------
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| 114 | void setScanner(XMLScanner* const scanner);
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| 115 |
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| 116 | // -----------------------------------------------------------------------
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| 117 | // Document Handling methods
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| 118 | // -----------------------------------------------------------------------
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| 119 | void startDocument();
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| 120 | void startElement();
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| 121 | void endElement();
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| 122 | void endDocument();
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| 123 |
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| 124 | // -----------------------------------------------------------------------
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| 125 | // Initialization methods
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| 126 | // -----------------------------------------------------------------------
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| 127 | void initValueStoresFor(SchemaElementDecl* const elemDecl, const int initialDepth);
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| 128 |
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| 129 |
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| 130 | // -----------------------------------------------------------------------
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| 131 | // Access methods
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| 132 | // -----------------------------------------------------------------------
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| 133 | ValueStore* getValueStoreFor(const IC_Field* const field, const int initialDepth);
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| 134 | ValueStore* getValueStoreFor(const IdentityConstraint* const ic, const int intialDepth);
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| 135 | ValueStore* getGlobalValueStoreFor(const IdentityConstraint* const ic);
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| 136 |
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| 137 | // -----------------------------------------------------------------------
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| 138 | // Helper methods
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| 139 | // -----------------------------------------------------------------------
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| 140 | /** This method takes the contents of the (local) ValueStore associated
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| 141 | * with ic and moves them into the global hashtable, if ic is a <unique>
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| 142 | * or a <key>. If it's a <keyRef>, then we leave it for later.
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| 143 | */
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| 144 | void transplant(IdentityConstraint* const ic, const int initialDepth);
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| 145 |
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| 146 | private:
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| 147 | // -----------------------------------------------------------------------
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| 148 | // Unimplemented contstructors and operators
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| 149 | // -----------------------------------------------------------------------
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| 150 | ValueStoreCache(const ValueStoreCache& other);
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| 151 | ValueStoreCache& operator= (const ValueStoreCache& other);
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| 152 |
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| 153 | // -----------------------------------------------------------------------
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| 154 | // Helper methods
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| 155 | // -----------------------------------------------------------------------
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| 156 | void init();
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| 157 | void cleanUp();
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| 158 |
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| 159 | // -----------------------------------------------------------------------
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| 160 | // Data
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| 161 | // -----------------------------------------------------------------------
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| 162 | RefVectorOf<ValueStore>* fValueStores;
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| 163 | RefHashTableOf<ValueStore>* fGlobalICMap;
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| 164 | RefHash2KeysTableOf<ValueStore>* fIC2ValueStoreMap;
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| 165 | RefStackOf<RefHashTableOf<ValueStore> >* fGlobalMapStack;
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| 166 | XMLScanner* fScanner;
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| 167 | MemoryManager* fMemoryManager;
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| 168 | };
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| 169 |
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| 170 | // ---------------------------------------------------------------------------
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| 171 | // ValueStoreCache: Access methods
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| 172 | // ---------------------------------------------------------------------------
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| 173 | inline void ValueStoreCache::setScanner(XMLScanner* const scanner) {
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| 174 |
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| 175 | fScanner = scanner;
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| 176 | }
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| 177 |
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| 178 | // ---------------------------------------------------------------------------
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| 179 | // ValueStoreCache: Access methods
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| 180 | // ---------------------------------------------------------------------------
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| 181 | inline ValueStore*
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| 182 | ValueStoreCache::getValueStoreFor(const IC_Field* const field, const int initialDepth) {
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| 183 |
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| 184 | return fIC2ValueStoreMap->get(field->getIdentityConstraint(), initialDepth);
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| 185 | }
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| 186 |
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| 187 | inline ValueStore*
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| 188 | ValueStoreCache::getValueStoreFor(const IdentityConstraint* const ic, const int initialDepth) {
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| 189 |
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| 190 | return fIC2ValueStoreMap->get(ic, initialDepth);
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| 191 | }
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| 192 |
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| 193 | inline ValueStore*
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| 194 | ValueStoreCache::getGlobalValueStoreFor(const IdentityConstraint* const ic) {
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| 195 |
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| 196 | return fGlobalICMap->get(ic);
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| 197 | }
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| 198 |
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| 199 | // ---------------------------------------------------------------------------
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| 200 | // ValueStoreCache: Document handling methods
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| 201 | // ---------------------------------------------------------------------------
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| 202 | inline void ValueStoreCache::endDocument() {
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| 203 | }
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| 204 |
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| 205 | XERCES_CPP_NAMESPACE_END
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| 206 |
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| 207 | #endif
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| 208 |
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| 209 | /**
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| 210 | * End of file ValueStoreCache.hpp
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| 211 | */
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| 212 |
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