PropertyObject.h

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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Dataquay

    A C++/Qt library for simple RDF datastore management with Redland.
    Copyright 2009 Chris Cannam.
  
    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
    files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use, copy,
    modify, merge, publish, distribute, sublicense, and/or sell copies
    of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    Except as contained in this notice, the name of Chris Cannam
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*/

#ifndef _DATAQUAY_PROPERTY_OBJECT_H_
#define _DATAQUAY_PROPERTY_OBJECT_H_

#include <QString>
#include <QUrl>
#include <map>

namespace Dataquay
{

class Transaction;
class Store;

class PropertyObject
{
public:
    PropertyObject(Store *s, QUrl myUri);

    PropertyObject(Store *s, QString myUri);

    PropertyObject(Store *s, QString propertyPrefix, QUrl myUri);

    PropertyObject(Store *s, QString propertyPrefix, QString myUri);

    bool hasProperty(QString name) const;

    bool hasProperty(Transaction *tx, QString name) const;

    QVariant getProperty(QString name) const;

    QVariant getProperty(Transaction *tx, QString name) const;

    void setProperty(Transaction *tx, QString name, QVariant value);

    void removeProperty(Transaction *tx, QString name);

    Store *getStore(Transaction *tx) const;

    QUrl getPropertyUri(QString name) const;

    static void setDefaultPropertyPrefix(QString prefix);
    
private:
    Store *m_store;
    QString m_pfx;
    QUrl m_uri;
    static QString m_defaultPrefix;
};

class CacheingPropertyObject
{
public:
    CacheingPropertyObject(Store *s, QUrl myUri);
    CacheingPropertyObject(Store *s, QString myUri);
    CacheingPropertyObject(Store *s, QString propertyPrefix, QUrl myUri);
    CacheingPropertyObject(Store *s, QString propertyPrefix, QString myUri);

    bool hasProperty(QString name) const;
    bool hasProperty(Transaction *tx, QString name) const;
    QVariant getProperty(QString name) const;
    QVariant getProperty(Transaction *tx, QString name) const;
    void setProperty(Transaction *tx, QString name, QVariant value);
    void removeProperty(Transaction *tx, QString name);

    Store *getStore(Transaction *tx) const;
    QUrl getPropertyUri(QString name) const;

private:
    PropertyObject m_po;
    typedef std::map<QString, QVariant> StringVariantMap;
    mutable StringVariantMap m_cache;
};

}

#endif

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