Package org.aksw.jenax.arq.functionbinder

Class FunctionGenerator

java.lang.Object

org.aksw.jenax.arq.functionbinder.FunctionGenerator

public class FunctionGenerator
extends Object

Class for generation of wrappers for Java methods that make them usable as Functions in Jena's SPARQL engine.

Author:

raven

Field Summary

Fields

Modifier and Type	Field	Description
protected org.aksw.commons.util.convert.ConverterRegistry	converterRegistry
protected Map<Class<?>,Class<?>>	javaToRdfTypeMap	Declarations for mapping java types to jena internal types For example, jts.Geometry map by remapped to jena.GeometryWrapper The cardinality is 1:1 - one input type can only map to one jena type
protected Map<Class<?>,String>	typeByClassOverrides
protected org.apache.jena.datatypes.TypeMapper	typeMapper

Constructor Summary

Constructors

Constructor	Description
FunctionGenerator()
FunctionGenerator(org.apache.jena.datatypes.TypeMapper typeMapper, org.aksw.commons.util.convert.ConverterRegistry converterRegistry, Map<Class<?>,Class<?>> returnTypeMap)

Method Summary

Modifier and Type	Method	Description
static org.aksw.commons.util.convert.ConvertFunctionRaw	createNodeValueMapper(Class<?> clz, org.aksw.commons.util.convert.ConverterRegistry converterRegistry, org.apache.jena.datatypes.TypeMapper typeMapper, Map<Class<?>,String> typeByClassOverrides)
org.aksw.commons.util.convert.ConverterRegistry	getConverterRegistry()
Map<Class<?>,Class<?>>	getJavaToRdfTypeMap()	A map for declaring forced conversions from a given input type to a target type.
org.aksw.commons.util.convert.ConvertFunctionRaw	getPreConvert(Class<?> targetJavaType, Class<?> internalJavaType)
Map<Class<?>,String>	getTypeByClassOverrides()
org.apache.jena.datatypes.TypeMapper	getTypeMapper()
FunctionAdapter	wrap(Method method)
FunctionAdapter	wrap(Method method, Object invocationTarget)	Pendant counterpart to Guava's: Iterators.getNext(Iterators.filter(Arrays.asList(arr).iterator(), type), null)

Methods inherited from class java.lang.Object

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

Field Details

typeMapper

protected org.apache.jena.datatypes.TypeMapper typeMapper

converterRegistry

protected org.aksw.commons.util.convert.ConverterRegistry converterRegistry

javaToRdfTypeMap

protected Map<Class<?>,Class<?>> javaToRdfTypeMap

Declarations for mapping java types to jena internal types For example, jts.Geometry map by remapped to jena.GeometryWrapper The cardinality is 1:1 - one input type can only map to one jena type

typeByClassOverrides

protected Map<Class<?>,String> typeByClassOverrides

Constructor Details

FunctionGenerator

public FunctionGenerator()

FunctionGenerator

public FunctionGenerator(org.apache.jena.datatypes.TypeMapper typeMapper,
 org.aksw.commons.util.convert.ConverterRegistry converterRegistry,
 Map<Class<?>,Class<?>> returnTypeMap)

Method Details

getTypeByClassOverrides

public Map<Class<?>,String> getTypeByClassOverrides()

getTypeMapper

public org.apache.jena.datatypes.TypeMapper getTypeMapper()

getConverterRegistry

public org.aksw.commons.util.convert.ConverterRegistry getConverterRegistry()

getJavaToRdfTypeMap

public Map<Class<?>,Class<?>> getJavaToRdfTypeMap()

A map for declaring forced conversions from a given input type to a target type. These conversions are applied before consulting jena's TypeMapper. If the target type is a sub-class of Node then the type mapper is not consulted because in that case the resulting type is already RDF.

Returns:

The map of forced conversions.

getPreConvert

public org.aksw.commons.util.convert.ConvertFunctionRaw getPreConvert(Class<?> targetJavaType,
 Class<?> internalJavaType)

wrap

public FunctionAdapter wrap(Method method)

wrap

public FunctionAdapter wrap(Method method,
 Object invocationTarget)

Pendant counterpart to Guava's: Iterators.getNext(Iterators.filter(Arrays.asList(arr).iterator(), type), null)

Type Parameters:

T -

Parameters:

arr -

type -

Returns:

createNodeValueMapper

public static org.aksw.commons.util.convert.ConvertFunctionRaw createNodeValueMapper(Class<?> clz,
 org.aksw.commons.util.convert.ConverterRegistry converterRegistry,
 org.apache.jena.datatypes.TypeMapper typeMapper,
 Map<Class<?>,String> typeByClassOverrides)