PLearn::SDBVMatrix Class Reference

#include <SDBVMat.h>

Inheritance diagram for PLearn::SDBVMatrix:

[legend]Collaboration diagram for PLearn::SDBVMatrix:

[legend]List of all members.

Public Member Functions
	SDBVMatrix (const string &dbname, bool detect_missing=false)
	Currently, the constructor assumes that the SDB exists on-disk.
void	appendField (const string &name, SDBVMField *new_field)
	Add a new field to the VMatrix.
const FieldsVector &	getFields () const
	Obtain a list of the added fields.
virtual void	getRow (int i, Vec v) const
	Transform row i of the SimpldDB into a row of the VMatrix.
SDBWithStats &	sdb ()
	Access underlying sdb.
const SDBWithStats &	sdb () const
Protected Attributes
SDBWithStats	sdb_
FieldsVector	fields_
Row	row_
bool	detect_missing_
Private Types
typedef RowBufferedVMatrix	inherited
typedef vector< PSDBVMField >	FieldsVector

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Detailed Description

This is a VMatrix that acts as a front-end to a SimpleDB (actually, an SDBWithStats). You can add as many fields derived from SDBVMField as required with the appendField function.

Definition at line 251 of file SDBVMat.h.

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Member Typedef Documentation

typedef vector<PSDBVMField> PLearn::SDBVMatrix::FieldsVector [private]

Definition at line 254 of file SDBVMat.h.

typedef RowBufferedVMatrix PLearn::SDBVMatrix::inherited [private]

Reimplemented from PLearn::RowBufferedVMatrix. Definition at line 253 of file SDBVMat.h.

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Constructor & Destructor Documentation

PLearn::SDBVMatrix::SDBVMatrix (  const string &  dbname, bool  detect_missing = false )

Currently, the constructor assumes that the SDB exists on-disk. Definition at line 216 of file SDBVMat.cc. References PLearn::SDBWithStats::computeStats(), PLearn::SimpleDB< KeyType, QueryResult >::getSchema(), PLearn::SDBWithStats::hasStats(), PLearn::SDBWithStats::loadStats(), row_, PLearn::SDBWithStats::saveStats(), PLearn::SDB, sdb_, and PLearn::SimpleDB< KeyType, QueryResult >::size().

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Member Function Documentation

void PLearn::SDBVMatrix::appendField (  const string &  name, SDBVMField *  new_field )

Add a new field to the VMatrix. The VMatrix assumes ownership of the field. Definition at line 230 of file SDBVMat.cc. References fields_, PLearn::SDBVMField::fieldType(), PLearn::SDBVMField::fieldWidth(), k, PLearn::PSDBVMField, PLearn::TVec< T >::resize(), and PLearn::split().

const FieldsVector& PLearn::SDBVMatrix::getFields (   )  const [inline]

Obtain a list of the added fields. Definition at line 267 of file SDBVMat.h.

void PLearn::SDBVMatrix::getRow (  int  i, Vec  v )  const [virtual]

Transform row i of the SimpldDB into a row of the VMatrix. Reimplemented from PLearn::RowBufferedVMatrix. Definition at line 255 of file SDBVMat.cc. References detect_missing_, fields_, PLearn::SimpleDB< KeyType, QueryResult >::getInRow(), PLearn::TVec< T >::hasMissing(), PLWARNING, row_, sdb_, and PLearn::TVec< T >::subVec().

const SDBWithStats& PLearn::SDBVMatrix::sdb (   )  const [inline]

Definition at line 278 of file SDBVMat.h.

SDBWithStats& PLearn::SDBVMatrix::sdb (   )  [inline]

Access underlying sdb. Definition at line 275 of file SDBVMat.h.

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Member Data Documentation

bool PLearn::SDBVMatrix::detect_missing_ [protected]

Definition at line 286 of file SDBVMat.h. Referenced by getRow().

FieldsVector PLearn::SDBVMatrix::fields_ [protected]

Definition at line 284 of file SDBVMat.h. Referenced by appendField(), and getRow().

Row PLearn::SDBVMatrix::row_ [mutable, protected]

Definition at line 285 of file SDBVMat.h. Referenced by getRow(), and SDBVMatrix().

SDBWithStats PLearn::SDBVMatrix::sdb_ [protected]

Definition at line 283 of file SDBVMat.h. Referenced by getRow(), and SDBVMatrix().

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The documentation for this class was generated from the following files:

• SDBVMat.h
• SDBVMat.cc

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