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#ifndef _QTDATA_
#define _QTDATA_
#include <iostream>
#include "qlparser/parseinfo.hh"
#include "raslib/rminit.hh"
#ifndef CPPSTDLIB
#include <ospace/string.h> // STL<ToolKit>
#else
#include <string>
#endif
/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
/*************************************************************
*
*
* COMMENTS:
*
************************************************************/
//@Man: TypeEnum
//@Type: typedef
//@Memo: Module: {\bf qlparser}.
enum QtDataType
{
QT_TYPE_UNKNOWN,
QT_BOOL,
QT_CHAR,
QT_OCTET,
QT_USHORT,
QT_SHORT,
QT_ULONG,
QT_LONG,
QT_FLOAT,
QT_DOUBLE,
QT_COMPLEXTYPE1, // with float members
QT_COMPLEXTYPE2, // with double
QT_MDD,
QT_COMPLEX,
QT_STRING,
QT_INTERVAL,
QT_MINTERVAL,
QT_POINT
};
//@ManMemo: Module: {\bf qlparser}
/*@Doc:
This class is superclass for the classes representing a
specific data type handled by the query tree.
*/
class QtData
{
public:
// construktor
QtData();
// constructor
QtData( const std::string name );
/// copy constructor
QtData( const QtData &obj );
/// destructor
virtual ~QtData();
/// assignement operator
const QtData& operator=( const QtData& obj );
enum QtLifetime
{
QT_PERSISTENT,
QT_TRANSIENT
};
/// returns type of data represented by the QtData object
virtual QtDataType getDataType() const = 0;
/**
\begin{tabular}{lll}
QtMDD&&QT_MDD\\
QtAtomicData&&QT_BOOL\\
&&QT_CHAR\\
&&QT_OCTET\\
&&QT_USHORT\\
&&QT_SHORT\\
&&QT_ULONG\\
&&QT_FLOAT\\
&&QT_DOUBLE\\
QtComplexData&&QT_COMPLEX\\
QtString&&QT_STRING\\
QtInterval&&QT_INTERVAL\\
QtMinterval&&QT_MINTERVAL\\
QtPoint&&QT_POINT\\
\end{tabular}
*/
/// returns a null-terminated string describing the type structure
virtual char* getTypeStructure() const = 0;
/**
The string pointer has to be free using free() by the caller.
*/
/// determines, if the data is of type scalar
virtual bool isScalarData() const;
/// compares data content
virtual bool equal( const QtData* obj ) const = 0;
/// returns content dependent string representation
virtual std::string getSpelling() const = 0;
//@Man: Read/Write methods:
//@{
///
/// get the iterator name
inline std::string const getIteratorName() const;
///
inline void setIteratorName( const std::string & iteratorNameNew );
///
inline QtLifetime const getLifetime() const;
///
inline void setLifetime( QtLifetime flag );
/// return number of references to the self object
inline unsigned int getRefNo() const;
/// increases the reference counter by one
inline void incRef();
/// deletes one reference and the object if it was the last one
inline int deleteRef();
/**
In case the object is deleted, 1 is returned, 0 otherwise.
*/
///
inline ParseInfo getParseInfo();
///
inline void setParseInfo( const ParseInfo &info );
///
//@}
/// print status of the object to the specified stream
virtual void printStatus( std::ostream& stream = std::cout ) const;
protected:
/// pointer to an optional parser info
ParseInfo* parseInfo;
private:
/// decreases the reference counter by one and returns the new value
inline unsigned int decRef();
/// attribute storing the iterator name
std::string iteratorName;
/// attribute storing the lifetime (persistent, transient)
QtLifetime persistent;
/**
Objects of subclasses of QtScalarData (QtAtomicData and QtComplexdata) are always transient.
Objects of subclass QtMDD are persistent or transient.
*/
/// counts the number of references to the data object
unsigned int referenceCounter;
};
#include "qlparser/qtdata.icc"
#endif
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