PLearn::AutoSDBVMatrix Class Reference

A VMatrix view of a SimpleDB: columns whose type is string are removed from the view, all others are converted to real (characters to their ascii code, and dates to the float date format: 990324). More...

#include <AutoSDBVMatrix.h>

Inheritance diagram for PLearn::AutoSDBVMatrix:

[legend]Collaboration diagram for PLearn::AutoSDBVMatrix:

[legend]List of all members.

Public Member Functions
	AutoSDBVMatrix (const string &dbname)
int	nstrings ()
	Returns the number of string fields (these will not be used in getRow!).
void	getMappings ()
	gets mappings for each string field
virtual string	getValString (int col, real val) const
	returns the string associated with value val for field# col.
Protected Member Functions
virtual void	getNewRow (int i, const Vec &v) const
	This is the only method requiring implementation in subclasses.
Protected Attributes
SDB	sdb_
Row	row_
hash_map< string, StringFieldMapping >	string_field_map
hash_map< string, NumToStringMapping >	num2string_map

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Detailed Description

A VMatrix view of a SimpleDB: columns whose type is string are removed from the view, all others are converted to real (characters to their ascii code, and dates to the float date format: 990324).

Definition at line 155 of file AutoSDBVMatrix.h.

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Constructor & Destructor Documentation

PLearn::AutoSDBVMatrix::AutoSDBVMatrix (  const string &  dbname  )

Definition at line 51 of file AutoSDBVMatrix.cc. References PLearn::DateType, PLearn::extract_directory(), PLearn::extract_filename(), PLearn::force_mkdir(), getMappings(), PLearn::SimpleDB< KeyType, QueryResult >::getSchema(), PLearn::SimpleDB< KeyType, QueryResult >::length(), PLWARNING, row_, PLearn::SDB, sdb_, and PLearn::SimpleDB< KeyType, QueryResult >::width().

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Member Function Documentation

void PLearn::AutoSDBVMatrix::getMappings (   )

gets mappings for each string field Definition at line 110 of file AutoSDBVMatrix.cc. References PLearn::SimpleDB< KeyType, QueryResult >::getSchema(), PLearn::isfile(), PLearn::load(), MISSING_VALUE, num2string_map, sdb_, slash, string_field_map, and PLearn::StringType. Referenced by AutoSDBVMatrix().

void PLearn::AutoSDBVMatrix::getNewRow (  int  i, const Vec &  v )  const [protected, virtual]

This is the only method requiring implementation in subclasses. Implements PLearn::RowBufferedVMatrix. Definition at line 85 of file AutoSDBVMatrix.cc. References PLearn::RowIterator::asCharacter(), PLearn::RowIterator::asString(), PLearn::Row::begin(), PLearn::Row::const_iterator, PLearn::SimpleDB< KeyType, QueryResult >::getInRow(), PLearn::RowIterator::isCharacter(), PLearn::RowIterator::isMissing(), PLearn::RowIterator::isString(), PLearn::TVec< T >::length(), MISSING_VALUE, PLearn::RowIterator::name(), PLERROR, row_, sdb_, string_field_map, PLearn::RowIterator::toDouble(), PLearn::Vec, and PLearn::VMatrix::width().

virtual string PLearn::AutoSDBVMatrix::getValString (  int  col, real  val )  const [inline, virtual]

returns the string associated with value val for field# col. Or returns "" if no string is associated. Reimplemented from PLearn::VMatrix. Definition at line 169 of file AutoSDBVMatrix.h. References getValString(), num2string_map, and val. Referenced by getValString().

int PLearn::AutoSDBVMatrix::nstrings (   )  [inline]

Returns the number of string fields (these will not be used in getRow!). Definition at line 162 of file AutoSDBVMatrix.h. References sdb_, PLearn::VMatrix::width(), and PLearn::SimpleDB< KeyType, QueryResult >::width().

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Member Data Documentation

hash_map<string, NumToStringMapping> PLearn::AutoSDBVMatrix::num2string_map [protected]

Definition at line 185 of file AutoSDBVMatrix.h. Referenced by getMappings(), and getValString().

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

Definition at line 183 of file AutoSDBVMatrix.h. Referenced by AutoSDBVMatrix(), and getNewRow().

SDB PLearn::AutoSDBVMatrix::sdb_ [protected]

Definition at line 182 of file AutoSDBVMatrix.h. Referenced by AutoSDBVMatrix(), getMappings(), getNewRow(), and nstrings().

hash_map<string, StringFieldMapping> PLearn::AutoSDBVMatrix::string_field_map [protected]

Definition at line 184 of file AutoSDBVMatrix.h. Referenced by getMappings(), and getNewRow().

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

• AutoSDBVMatrix.h
• AutoSDBVMatrix.cc

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