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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IDBKey_h
#define IDBKey_h
#include "platform/SharedBuffer.h"
#include "wtf/Forward.h"
#include "wtf/RefCounted.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
class IDBKey : public RefCounted<IDBKey> {
public:
typedef Vector<RefPtr<IDBKey> > KeyArray;
static PassRefPtr<IDBKey> createInvalid()
{
return adoptRef(new IDBKey());
}
static PassRefPtr<IDBKey> createNumber(double number)
{
return adoptRef(new IDBKey(NumberType, number));
}
static PassRefPtr<IDBKey> createBinary(PassRefPtr<SharedBuffer> binary)
{
return adoptRef(new IDBKey(binary));
}
static PassRefPtr<IDBKey> createString(const String& string)
{
return adoptRef(new IDBKey(string));
}
static PassRefPtr<IDBKey> createDate(double date)
{
return adoptRef(new IDBKey(DateType, date));
}
static PassRefPtr<IDBKey> createMultiEntryArray(const KeyArray& array)
{
KeyArray result;
for (size_t i = 0; i < array.size(); i++) {
if (!array[i]->isValid())
continue;
bool skip = false;
for (size_t j = 0; j < result.size(); j++) {
if (array[i]->isEqual(result[j].get())) {
skip = true;
break;
}
}
if (!skip) {
result.append(array[i]);
}
}
RefPtr<IDBKey> idbKey = adoptRef(new IDBKey(result));
ASSERT(idbKey->isValid());
return idbKey.release();
}
static PassRefPtr<IDBKey> createArray(const KeyArray& array)
{
return adoptRef(new IDBKey(array));
}
~IDBKey();
// In order of the least to the highest precedent in terms of sort order.
enum Type {
InvalidType = 0,
ArrayType,
BinaryType,
StringType,
DateType,
NumberType,
MinType
};
Type type() const { return m_type; }
bool isValid() const;
const KeyArray& array() const
{
ASSERT(m_type == ArrayType);
return m_array;
}
PassRefPtr<SharedBuffer> binary() const
{
ASSERT(m_type == BinaryType);
return m_binary;
}
const String& string() const
{
ASSERT(m_type == StringType);
return m_string;
}
double date() const
{
ASSERT(m_type == DateType);
return m_number;
}
double number() const
{
ASSERT(m_type == NumberType);
return m_number;
}
int compare(const IDBKey* other) const;
bool isLessThan(const IDBKey* other) const;
bool isEqual(const IDBKey* other) const;
using RefCounted<IDBKey>::ref;
using RefCounted<IDBKey>::deref;
private:
IDBKey() : m_type(InvalidType), m_number(0) { }
IDBKey(Type type, double number) : m_type(type), m_number(number) { }
explicit IDBKey(const String& value) : m_type(StringType), m_string(value), m_number(0) { }
explicit IDBKey(PassRefPtr<SharedBuffer> value) : m_type(BinaryType), m_binary(value), m_number(0) { }
explicit IDBKey(const KeyArray& keyArray) : m_type(ArrayType), m_array(keyArray), m_number(0) { }
const Type m_type;
const KeyArray m_array;
RefPtr<SharedBuffer> m_binary;
const String m_string;
const double m_number;
};
} // namespace WebCore
#endif // IDBKey_h
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