org.aksw.limes.core.io.preprocessing

Class APreprocessingFunction

java.lang.Object

org.aksw.limes.core.io.preprocessing.APreprocessingFunction

All Implemented Interfaces:

IPreprocessingFunction

Direct Known Subclasses:

CleanIri, CleanNumber, Concat, RegexReplace, RemoveBraces, RemoveLanguageTag, RemoveNonAlphanumeric, RenameProperty, Replace, Split, ToCelsius, ToFahrenheit, ToLowercase, ToUppercase, ToWktPoint, UriAsString

public abstract class APreprocessingFunction
extends Object
implements IPreprocessingFunction

Field Summary

Fields

Modifier and Type	Field and Description
static String	AT
static Pattern	checkFunctionString
static String	commaNotInsideQuotation Matches comma if that comma is not followed by quotation mark

Constructor Summary

Constructors

Constructor and Description
APreprocessingFunction()

Method Summary

Modifier and Type	Method and Description
Instance	applyFunction(Instance inst, String property, String... arguments) Applies the function to this instance
abstract Instance	applyFunctionAfterCheck(Instance inst, String property, String... arguments)
String[]	retrieveArguments(String args) Retrieves the arguments for a function, but ignores the function id
String	retrieveKeywordArgumentValue(String arg, String keyword)
void	sanityCheckArguments(String args)
void	testIfNumberOfArgumentsIsLegal(String... arguments)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.aksw.limes.core.io.preprocessing.IPreprocessingFunction

maxNumberOfArguments, minNumberOfArguments

Field Detail

AT

public static final String AT

See Also:

Constant Field Values

commaNotInsideQuotation

public static final String commaNotInsideQuotation

Matches comma if that comma is not followed by quotation mark

See Also:

Constant Field Values

checkFunctionString

public static final Pattern checkFunctionString

Constructor Detail

APreprocessingFunction

public APreprocessingFunction()

Method Detail

applyFunction

public Instance applyFunction(Instance inst,
                              String property,
                              String... arguments)

Description copied from interface: IPreprocessingFunction

Applies the function to this instance

Specified by:

applyFunction in interface IPreprocessingFunction

Parameters:

inst - the instance that will be preprocessed

property - for unary operators this is the property on which the function will be applied, for n-ary fucntions this is the name of the new property where the result of the preprocessing will be stored

arguments - some functions take arguments

Returns:

the preprocessed instance

applyFunctionAfterCheck

public abstract Instance applyFunctionAfterCheck(Instance inst,
                                                 String property,
                                                 String... arguments)

testIfNumberOfArgumentsIsLegal

public void testIfNumberOfArgumentsIsLegal(String... arguments)
                                    throws IllegalNumberOfParametersException

Throws:

IllegalNumberOfParametersException

retrieveArguments

public String[] retrieveArguments(String args)

Retrieves the arguments for a function, but ignores the function id

Parameters:

args - the string from the config e.g. replace(test,)

Returns:

array containing only the arguments without function id e.g. [test,]

sanityCheckArguments

public void sanityCheckArguments(String args)

retrieveKeywordArgumentValue

public String retrieveKeywordArgumentValue(String arg,
                                           String keyword)