eu.slipo.athenarc.triplegeo.utils

Class ValueChecker

java.lang.Object

eu.slipo.athenarc.triplegeo.utils.ValueChecker

public class ValueChecker
extends java.lang.Object

Removes or replaces illegal characters from a literal value. LIMITATIONS: Currently handling only some basic cases that may cause trouble (e.g., line breaks) in literals included in RDF triples.

Version:

2.0

Author:

Kostas Patroumpas

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.String,Pattern>	replacements

Constructor Summary

Constructors

Constructor and Description
ValueChecker() Constructs a ValueChecker object that will be used for checking (and possibly correcting) literals for specific anomalies before issuing RDF triples

Method Summary

Modifier and Type	Method and Description
java.lang.String	cleanupURL(java.lang.String val) Restores the given string value as a URL
java.lang.String	findReplacePattern(java.lang.String val, Pattern p) Find a given pattern (i.e., regular expression) and replace it with another string in a literal.
java.lang.String	findReplaceSubstring(java.lang.String val, Pattern p) Find a given substring and replace it with another string in a literal.
java.lang.String	removeDelimiter(java.lang.String val) Eliminates any appearance of the delimiter character in the given string value (literal)
java.lang.String	removeIllegalChars(java.lang.String val) Eliminates illegal characters from the given string value (literal)
java.lang.String	replaceWhiteSpace(java.lang.String val) Remove whitespace characters from a string literal

Methods inherited from class java.lang.Object

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

Field Detail

replacements

private java.util.Map<java.lang.String,Pattern> replacements

Constructor Detail

ValueChecker

public ValueChecker()

Constructs a ValueChecker object that will be used for checking (and possibly correcting) literals for specific anomalies before issuing RDF triples

Method Detail

removeIllegalChars

public java.lang.String removeIllegalChars(java.lang.String val)

Eliminates illegal characters from the given string value (literal)

Parameters:

val - A string value.

Returns:

The same string value with any illegal characters removed.

removeDelimiter

public java.lang.String removeDelimiter(java.lang.String val)

Eliminates any appearance of the delimiter character in the given string value (literal)

Parameters:

val - A string value.

Returns:

The same string value after the delimiter character has been replaced.

cleanupURL

public java.lang.String cleanupURL(java.lang.String val)

Restores the given string value as a URL

Parameters:

val - A string value representing a URL

Returns:

The same string value as a valid HTTP address

replaceWhiteSpace

public java.lang.String replaceWhiteSpace(java.lang.String val)

Remove whitespace characters from a string literal

Parameters:

val - A string value that possibly contains whitespace

Returns:

The original string with any whitespace characters replaced

findReplaceSubstring

public java.lang.String findReplaceSubstring(java.lang.String val,
                                             Pattern p)

Find a given substring and replace it with another string in a literal.

Parameters:

val - A literal value to be searched for the substring.

p - A pattern specifying a search and a replacement string (specified in the external resource XML file).

Returns:

The modified literal after replacement.

findReplacePattern

public java.lang.String findReplacePattern(java.lang.String val,
                                           Pattern p)

Find a given pattern (i.e., regular expression) and replace it with another string in a literal.

Parameters:

val - A literal value to be searched for the pattern.

p - A pattern specifying a search regular expression and a replacement string (specified in the external resource XML file).

Returns:

The modified literal after replacement.