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#ifndef QUERY_H #define QUERY_H #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <qstring.h> #include <qstringlist.h> #include "dataobject.h" namespace KDB { class Recordset; /*** * representation of a stored query. trough this object we access the fields and * parameters of the query, if any. */ class Query :public DataObject{ Q_OBJECT public: Query( const char * name ); virtual ~Query(); /** * append a new field to the output list of the query * it works only in design mode */ virtual void addField(const QString &table, const QString &name) = 0; /** * add a table to the existing output list of tables */ virtual void addTable(const QString &name) = 0; /** * add a condition (where clause) to the query */ virtual void addCondition(const QString &condition) = 0; /** * return the SQL code associated to the query. * if the query is in design mode, it will build with the actual * tables, fields and conditions */ virtual QString SQL() = 0; /** * creates a recordset based on this query. */ virtual Recordset * openRecordset() = 0; /** * returns true if the query is in design mode */ virtual bool isDesign() = 0; protected: QString m_SQL; QStringList m_fields; QStringList m_tables; QStringList m_conditions; }; } #endif
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