src/dom/DStringPool.hpp

/*
 * The Apache Software License, Version 1.1
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//
// file DStringPool.hpp
//

//
//  This file is part of the internal implementation of the C++ XML DOM.
//  It should NOT be included or used directly by application programs.
//
//  Applications should include the file <dom/DOM.hpp> for the entire
//  DOM API, or DOM_*.hpp for individual DOM classes, where the class
//  name is substituded for the *.
//

#ifndef DStringPool_HEADER_GUARD_
#define DStringPool_HEADER_GUARD_

#include <util/XML4CDefs.hpp>
#include <dom/DOMString.hpp>

struct DStringPoolEntry;

//
// DStringPool is a hash table of DOMStrings.
//  Each DOM Document maintains a DStringPool containing a DOMString
//  for each Element tag name and Attribute Name that has been added
//  to the document.  When creating additional elements or attributes,
//  if the name has been seen before, the already existing string
//  will be reused.
//
class DStringPool
{
public:
    DStringPool(int  hashTableSize);  
    ~DStringPool();

    const DOMString &getPooledString(const DOMString &in);
    const DOMString &getPooledString(const XMLCh *in);

    static const DOMString &getStaticString(const char *in, DOMString **loc);


private:
    DStringPool(const DStringPool &other);      // Copy constructor and assignment
    void operator = (const DStringPool &other); //  of DStringPool are not supported.

    DStringPoolEntry **fHashTable;
    int              fHashTableSize;
};

#endif