de.lmu.ifi.dbs.elki.parser.meta
Class MetaParser<O extends DatabaseObject>

java.lang.Object
  de.lmu.ifi.dbs.elki.logging.AbstractLoggable
      de.lmu.ifi.dbs.elki.parser.meta.MetaParser<O>

Type Parameters:

O - the type of DatabaseObject used in the ParsingResult retrieved by the base parser and provided in the ParsingResult of the Parser.parse(InputStream)-method of this Parser's subclass.

All Implemented Interfaces:

Parser<O>, Parameterizable

Direct Known Subclasses:

ProjectionParser, RandomProjectionParser

public abstract class MetaParser<O extends DatabaseObject>
extends AbstractLoggable
implements Parser<O>

A MetaParser uses any Parser as specified by the user via parameter setting as base parser and may perform certain transformations on the retrieved ParsingResult.

Author:

Arthur Zimek

Field Summary

private Parser<O>	baseparser Holds an instance of the current base parser.
static OptionID	BASEPARSER_ID OptionID for BASEPARSER_PARAM.
private ClassParameter<? extends Parser<O>>	BASEPARSER_PARAM The parameter for setting the base parser.

Fields inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debug, logger

Constructor Summary

MetaParser(Parameterization config)
Constructor, adhering to Parameterizable

Method Summary

protected ParsingResult<O>	retrieveBaseParsingresult(InputStream in) Retrieves the ParsingResult of the base parser.
String	toString() Returns a string representation of the object.

Methods inherited from class de.lmu.ifi.dbs.elki.logging.AbstractLoggable

debugFine, debugFiner, debugFinest, exception, progress, verbose, warning

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface de.lmu.ifi.dbs.elki.parser.Parser

parse

Field Detail

BASEPARSER_ID

public static final OptionID BASEPARSER_ID

OptionID for BASEPARSER_PARAM.

BASEPARSER_PARAM

private final ClassParameter<? extends Parser<O extends DatabaseObject>> BASEPARSER_PARAM

The parameter for setting the base parser.

Key: -metaparser.baseparser

Default: DoubleVectorLabelParser

baseparser

private Parser<O extends DatabaseObject> baseparser

Holds an instance of the current base parser.

Constructor Detail

MetaParser

public MetaParser(Parameterization config)

Constructor, adhering to Parameterizable

Parameters:

config - Parameterization

Method Detail

retrieveBaseParsingresult

protected ParsingResult<O> retrieveBaseParsingresult(InputStream in)

Retrieves the ParsingResult of the base parser.

Parameters:

in - the InputStream to be parsed

Returns:

the ParsingResult of the base parser

toString

public String toString()

Returns a string representation of the object.

Overrides:

toString in class Object

Returns:

a string representation of the object.