87 lines
3.2 KiB
C++
87 lines
3.2 KiB
C++
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: DOMNodeIDMap.hpp 676911 2008-07-15 13:27:32Z amassari $
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*/
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#if !defined(XERCESC_INCLUDE_GUARD_DOMNODEIDMAP_HPP)
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#define XERCESC_INCLUDE_GUARD_DOMNODEIDMAP_HPP
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//
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// This file is part of the internal implementation of the C++ XML DOM.
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// It should NOT be included or used directly by application programs.
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//
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// Applications should include the file <xercesc/dom/DOM.hpp> for the entire
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// DOM API, or xercesc/dom/DOM*.hpp for individual DOM classes, where the class
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// name is substituded for the *.
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//
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#include <xercesc/util/XercesDefs.hpp>
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XERCES_CPP_NAMESPACE_BEGIN
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//
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// Class DOMNodeIDMap is a hash table that is used in the implementation of
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// of DOM_Document::getElementsByID().
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//
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// Why Yet Another HashTable implementation? Becuase it can be significantly
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// smaller when tuned for this exact usage, and the generic RefHashTableOf
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// from the xerces utils project is not a paricularly good fit.
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//
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class DOMAttr;
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class DOMDocument;
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class DOMNodeIDMap {
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public:
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DOMNodeIDMap(XMLSize_t initialSize, DOMDocument *doc); // Create a new hash table, sized to hold "initialSize"
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// Entries. It will automatically grow if need be.
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~DOMNodeIDMap();
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private:
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DOMNodeIDMap(const DOMNodeIDMap &other); // No copy, assignement, comparison.
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DOMNodeIDMap &operator = (const DOMNodeIDMap &other);
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bool operator == (const DOMNodeIDMap &other);
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public:
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void add(DOMAttr *attr); // Add the specified attribute to the table.
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void remove(DOMAttr *other); // Remove the specified attribute.
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// Does nothing if the node is not in the table.
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DOMAttr *find(const XMLCh *ID); // Find the attribute node in the table with this ID
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private:
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void growTable();
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private:
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DOMAttr **fTable;
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XMLSize_t fSizeIndex; // Index of the current table size in the
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// array of possible table sizes.
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XMLSize_t fSize; // The current size of the table array
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// (number of slots, not bytes.)
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XMLSize_t fNumEntries; // The number of entries used.
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XMLSize_t fMaxEntries; // The max number of entries to use before
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// growing the table.
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DOMDocument *fDoc; // The owning document.
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};
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XERCES_CPP_NAMESPACE_END
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#endif
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