de.lmu.ifi.dbs.elki.datasource.parser

Class AbstractParser

java.lang.Object

de.lmu.ifi.dbs.elki.datasource.parser.AbstractParser

Direct Known Subclasses:

AbstractStreamingParser, BitVectorLabelParser, NumberDistanceParser, SimplePolygonParser, SparseBitVectorLabelParser

public abstract class AbstractParser
extends Object

Abstract superclass for all parsers providing the option handler for handling options.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractParser.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTRIBUTE_CONCATENATION A sign to separate attributes.
private Pattern	colSep Stores the column separator pattern
protected Pattern	comment Comment pattern.
static String	COMMENT_PATTERN Default pattern for comments.
static String	DEFAULT_SEPARATOR A pattern defining whitespace.
static String	NUMBER_PATTERN A pattern catching most numbers that can be parsed using Double.parseDouble: Some examples: 1 1.
static char	QUOTE_CHAR A quote pattern
protected char	quoteChar Stores the quotation character

Constructor Summary

Constructors

Constructor and Description
AbstractParser(Pattern colSep, char quoteChar, Pattern comment) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract Logging	getLogger() Get the logger for this class.
protected List<String>	tokenize(String input) Tokenize a string.
String	toString() Returns a string representation of the object.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_SEPARATOR

public static final String DEFAULT_SEPARATOR

A pattern defining whitespace.

See Also:

Constant Field Values

QUOTE_CHAR

public static final char QUOTE_CHAR

A quote pattern

See Also:

Constant Field Values

NUMBER_PATTERN

public static final String NUMBER_PATTERN

A pattern catching most numbers that can be parsed using Double.parseDouble: Some examples: 1 1. 1.2 .2 -.2e-03

See Also:

Constant Field Values

COMMENT_PATTERN

public static final String COMMENT_PATTERN

Default pattern for comments.

See Also:

Constant Field Values

ATTRIBUTE_CONCATENATION

public static final String ATTRIBUTE_CONCATENATION

A sign to separate attributes.

See Also:

Constant Field Values

colSep

private Pattern colSep

Stores the column separator pattern

quoteChar

protected char quoteChar

Stores the quotation character

comment

protected Pattern comment

Comment pattern.

Constructor Detail

AbstractParser

public AbstractParser(Pattern colSep,
              char quoteChar,
              Pattern comment)

Constructor.

Parameters:

colSep - Column separator

quoteChar - Quote character

comment - Comment pattern

Method Detail

tokenize

protected List<String> tokenize(String input)

Tokenize a string. Works much like colSep.split() except it honors quotation characters.

Parameters:

input - Input string

Returns:

Tokenized string

getLogger

protected abstract Logging getLogger()

Get the logger for this class.

Returns:

Logger.

toString

public String toString()

Returns a string representation of the object.

Overrides:

toString in class Object

Returns:

a string representation of the object.