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Column-oriented GPU-accelerated Database Management System
CoGaDB
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Column-oriented GPU-accelerated Database Management System
CoGaDB
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A LookupArray is a LookupColumn which is applied on a materialized column (of the table that is indexed by the Lookup column) and hence has a Type. This class represents a column with type T, which is essentially a tid list describing which values of a typed materialized column are included in the LookupArray. More...
#include <lookup_array.hpp>
Public Member Functions | |
| LookupArray (const std::string &name, AttributeType db_type, ColumnPtr column, PositionListPtr tids) | |
| virtual | ~LookupArray () |
| virtual bool | insert (const boost::any &new_Value) |
| appends a value new_Value to end of column | |
| virtual bool | insert (const T &new_Value) |
| virtual bool | update (TID tid, const boost::any &new_value) |
| updates the value on position tid with a value new_Value | |
| virtual bool | update (PositionListPtr tid, const boost::any &new_value) |
| updates the values specified by the position list with a value new_Value | |
| virtual bool | remove (TID tid) |
| deletes the value on position tid | |
| virtual bool | remove (PositionListPtr tid) |
| deletes the values defined in the position list | |
| virtual bool | clearContent () |
| deletes all values stored in the column | |
| virtual const boost::any | get (TID tid) |
| generic function for fetching a value form a column (slow) | |
| virtual void | print () const throw () |
| prints the content of a column | |
| virtual size_t | size () const throw () |
| returns the number of values (rows) in a column | |
| virtual unsigned int | getSizeinBytes () const throw () |
| returns the size in bytes the column consumes in main memory | |
| virtual const ColumnPtr | copy () const |
| virtual copy constructor | |
| virtual bool | store (const std::string &path) |
| store a column on the disc | |
| virtual bool | load (const std::string &path) |
| load column from disc | |
| virtual bool | isMaterialized () const throw () |
| use this method to determine whether the column is materialized or a Lookup Column | |
| virtual bool | isCompressed () const throw () |
| use this method to determine whether the column is materialized or a Lookup Column | |
| virtual T & | operator[] (const int index) |
| returns type information of internal values | |
| LookupArray (const std::string &name, AttributeType db_type, ColumnPtr column, PositionListPtr tids) | |
| virtual | ~LookupArray () |
| virtual bool | insert (const boost::any &new_Value) |
| appends a value new_Value to end of column | |
| virtual bool | insert (const T &new_Value) |
| virtual bool | update (TID tid, const boost::any &new_value) |
| updates the value on position tid with a value new_Value | |
| virtual bool | update (PositionListPtr tid, const boost::any &new_value) |
| updates the values specified by the position list with a value new_Value | |
| virtual bool | remove (TID tid) |
| deletes the value on position tid | |
| virtual bool | remove (PositionListPtr tid) |
| deletes the values defined in the position list | |
| virtual bool | clearContent () |
| deletes all values stored in the column | |
| virtual const boost::any | get (TID tid) |
| generic function for fetching a value form a column (slow) | |
| virtual void | print () const throw () |
| prints the content of a column | |
| virtual size_t | size () const throw () |
| returns the number of values (rows) in a column | |
| virtual unsigned int | getSizeinBytes () const throw () |
| returns the size in bytes the column consumes in main memory | |
| PositionListPtr | getPositionList () |
| virtual const ColumnPtr | copy () const |
| virtual copy constructor | |
| virtual const ColumnPtr | gather (PositionListPtr tid_list) |
| creates a new column by fetching all values identified by the tid_list | |
| virtual bool | store (const std::string &path) |
| store a column on the disc | |
| virtual bool | load (const std::string &path) |
| load column from disc | |
| virtual bool | isMaterialized () const throw () |
| use this method to determine whether the column is materialized or a Lookup Column | |
| virtual bool | isCompressed () const throw () |
| use this method to determine whether the column is materialized or a Lookup Column | |
| virtual const ColumnPtr | materialize () throw () |
| materializes a column to a normal uncompressed column with dense values | |
| virtual T & | operator[] (const int index) |
| returns type information of internal values | |
Private Attributes | |
| shared_pointer_namespace::shared_ptr < ColumnBaseTyped< T > > | column_ |
| PositionListPtr | tids_ |
A LookupArray is a LookupColumn which is applied on a materialized column (of the table that is indexed by the Lookup column) and hence has a Type. This class represents a column with type T, which is essentially a tid list describing which values of a typed materialized column are included in the LookupArray.
This class is indentended to be a base class, so it has a virtual destruktor and pure virtual methods, which need to be implemented in a derived class.
| CoGaDB::LookupArray< T >::LookupArray | ( | const std::string & | name, |
| AttributeType | db_type, | ||
| ColumnPtr | column, | ||
| PositionListPtr | tids | ||
| ) |
References CoGaDB::LookupArray< T >::column_, and CoGaDB::LookupArray< T >::tids_.
| CoGaDB::LookupArray< T >::~LookupArray | ( | ) | [virtual] |
| CoGaDB::LookupArray< T >::LookupArray | ( | const std::string & | name, |
| AttributeType | db_type, | ||
| ColumnPtr | column, | ||
| PositionListPtr | tids | ||
| ) |
| virtual CoGaDB::LookupArray< T >::~LookupArray | ( | ) | [virtual] |
| bool CoGaDB::LookupArray< T >::clearContent | ( | ) | [virtual] |
deletes all values stored in the column
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::clearContent | ( | ) | [virtual] |
deletes all values stored in the column
Implements CoGaDB::ColumnBaseTyped< T >.
| const ColumnPtr CoGaDB::LookupArray< T >::copy | ( | ) | const [virtual] |
virtual copy constructor
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual const ColumnPtr CoGaDB::LookupArray< T >::copy | ( | ) | const [virtual] |
virtual copy constructor
Implements CoGaDB::ColumnBaseTyped< T >.
| const ColumnPtr CoGaDB::LookupArray< T >::gather | ( | PositionListPtr | tid_list | ) | [virtual] |
creates a new column by fetching all values identified by the tid_list
Implements CoGaDB::ColumnBaseTyped< T >.
References CoGaDB::Column< T >::getContent().
| const boost::any CoGaDB::LookupArray< T >::get | ( | TID | tid | ) | [virtual] |
generic function for fetching a value form a column (slow)
check whether the object is valid (e.g., when a tid is not valid, then the returned object is invalid as well)
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual const boost::any CoGaDB::LookupArray< T >::get | ( | TID | tid | ) | [virtual] |
generic function for fetching a value form a column (slow)
check whether the object is valid (e.g., when a tid is not valid, then the returned object is invalid as well)
Implements CoGaDB::ColumnBaseTyped< T >.
| PositionListPtr CoGaDB::LookupArray< T >::getPositionList | ( | ) |
| unsigned int CoGaDB::LookupArray< T >::getSizeinBytes | ( | ) | const throw () [virtual] |
returns the size in bytes the column consumes in main memory
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual unsigned int CoGaDB::LookupArray< T >::getSizeinBytes | ( | ) | const throw () [virtual] |
returns the size in bytes the column consumes in main memory
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::insert | ( | const boost::any & | new_Value | ) | [virtual] |
appends a value new_Value to end of column
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::insert | ( | const boost::any & | new_Value | ) | [virtual] |
appends a value new_Value to end of column
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::insert | ( | const T & | new_Value | ) | [virtual] |
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::insert | ( | const T & | new_Value | ) | [virtual] |
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::isCompressed | ( | ) | const throw () [virtual] |
use this method to determine whether the column is materialized or a Lookup Column
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::isCompressed | ( | ) | const throw () [virtual] |
use this method to determine whether the column is materialized or a Lookup Column
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::isMaterialized | ( | ) | const throw () [virtual] |
use this method to determine whether the column is materialized or a Lookup Column
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::isMaterialized | ( | ) | const throw () [virtual] |
use this method to determine whether the column is materialized or a Lookup Column
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::load | ( | const std::string & | path | ) | [virtual] |
load column from disc
calling load on a column that is not empty yields undefined behaviour
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::load | ( | const std::string & | path | ) | [virtual] |
load column from disc
calling load on a column that is not empty yields undefined behaviour
Implements CoGaDB::ColumnBaseTyped< T >.
| const ColumnPtr CoGaDB::LookupArray< T >::materialize | ( | ) | throw () [virtual] |
materializes a column to a normal uncompressed column with dense values
Implements CoGaDB::ColumnBaseTyped< T >.
References CoGaDB::Column< T >::getContent().
| T & CoGaDB::LookupArray< T >::operator[] | ( | const int | index | ) | [virtual] |
returns type information of internal values
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual T& CoGaDB::LookupArray< T >::operator[] | ( | const int | index | ) | [virtual] |
returns type information of internal values
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual void CoGaDB::LookupArray< T >::print | ( | ) | const throw () [virtual] |
prints the content of a column
Implements CoGaDB::ColumnBaseTyped< T >.
| void CoGaDB::LookupArray< T >::print | ( | ) | const throw () [virtual] |
prints the content of a column
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::remove | ( | TID | tid | ) | [virtual] |
deletes the value on position tid
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::remove | ( | TID | tid | ) | [virtual] |
deletes the value on position tid
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::remove | ( | PositionListPtr | tid | ) | [virtual] |
deletes the values defined in the position list
assumes tid list is sorted ascending
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::remove | ( | PositionListPtr | tid | ) | [virtual] |
deletes the values defined in the position list
assumes tid list is sorted ascending
Implements CoGaDB::ColumnBaseTyped< T >.
| size_t CoGaDB::LookupArray< T >::size | ( | ) | const throw () [virtual] |
returns the number of values (rows) in a column
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual size_t CoGaDB::LookupArray< T >::size | ( | ) | const throw () [virtual] |
returns the number of values (rows) in a column
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::store | ( | const std::string & | path | ) | [virtual] |
store a column on the disc
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::store | ( | const std::string & | path | ) | [virtual] |
store a column on the disc
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::update | ( | TID | tid, |
| const boost::any & | new_Value | ||
| ) | [virtual] |
updates the value on position tid with a value new_Value
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::update | ( | TID | tid, |
| const boost::any & | new_Value | ||
| ) | [virtual] |
updates the value on position tid with a value new_Value
Implements CoGaDB::ColumnBaseTyped< T >.
| virtual bool CoGaDB::LookupArray< T >::update | ( | PositionListPtr | tids, |
| const boost::any & | new_value | ||
| ) | [virtual] |
updates the values specified by the position list with a value new_Value
Implements CoGaDB::ColumnBaseTyped< T >.
| bool CoGaDB::LookupArray< T >::update | ( | PositionListPtr | tids, |
| const boost::any & | new_value | ||
| ) | [virtual] |
updates the values specified by the position list with a value new_Value
Implements CoGaDB::ColumnBaseTyped< T >.
shared_pointer_namespace::shared_ptr< ColumnBaseTyped< T > > CoGaDB::LookupArray< T >::column_ [private] |
Referenced by CoGaDB::LookupArray< T >::LookupArray().
PositionListPtr CoGaDB::LookupArray< T >::tids_ [private] |
Referenced by CoGaDB::LookupArray< T >::LookupArray().
1.7.6.1 
