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Diffstat (limited to 'qlparser/qtdata.hh')
| -rw-r--r-- | qlparser/qtdata.hh | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/qlparser/qtdata.hh b/qlparser/qtdata.hh new file mode 100644 index 0000000..ee2e285 --- /dev/null +++ b/qlparser/qtdata.hh @@ -0,0 +1,200 @@ +#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 + |