org.apache.marmotta.ldpath.model.tests.functions.text

Class AbstractStringTest<Node>

java.lang.Object

org.apache.marmotta.ldpath.api.functions.TestFunction<Node>

org.apache.marmotta.ldpath.model.tests.functions.text.AbstractStringTest<Node>

All Implemented Interfaces:

NodeFunction<Boolean,Node>, LDPathConstruct<Node>

Direct Known Subclasses:

AbstractBinaryStringTest, StringIsEmptyTest

public abstract class AbstractStringTest<Node>
extends TestFunction<Node>

Abstract base class for LDPath Test functions that work on the string representation of nodes.

Author:

Jakob Frank

See Also:

TestFunction

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	AbstractStringTest.ToStringFunction A function for the guava-library to convert a node into a string based on the backend provided in the constructor.

Field Summary

Fields

Modifier and Type	Field and Description
protected StringTransformer<Node>	transformer

Constructor Summary

Constructors

Constructor and Description
AbstractStringTest()

Method Summary

Methods

Modifier and Type	Method and Description
Boolean	apply(RDFBackend<Node> backend, Node context, Collection<Node>... args) Apply the function to the list of nodes passed as arguments and return the result as type T.
protected abstract int	getArgCount() Number of (required) arguments this function accepts.
String	getSignature() The signature of this functions (how to use it)
protected abstract boolean	test(AbstractStringTest.ToStringFunction toStringFunction, Collection<Node>... args)

Methods inherited from class org.apache.marmotta.ldpath.api.functions.TestFunction

getLocalName, getPathExpression

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.marmotta.ldpath.api.functions.NodeFunction

getDescription

Field Detail

transformer

protected final StringTransformer<Node> transformer

Constructor Detail

AbstractStringTest

public AbstractStringTest()

Method Detail

apply

public Boolean apply(RDFBackend<Node> backend,
            Node context,
            Collection<Node>... args)
              throws IllegalArgumentException

Description copied from interface: NodeFunction

Apply the function to the list of nodes passed as arguments and return the result as type T. Throws IllegalArgumentException if the function cannot be applied to the nodes passed as argument or the number of arguments is not correct.

context - the context of the execution. Same as using the NodeSelector '.' as parameter.

args - a nested list of KiWiNodes

Returns:

Throws:

IllegalArgumentException

test

protected abstract boolean test(AbstractStringTest.ToStringFunction toStringFunction,
           Collection<Node>... args)

Parameters:

toStringFunction -

args -

getSignature

public String getSignature()

The signature of this functions (how to use it)

Returns:

getArgCount

protected abstract int getArgCount()

Number of (required) arguments this function accepts.

Returns: