Package org.aksw.jenax.arq.functionbinder

Class FunctionAdapter

java.lang.Object
org.aksw.jenax.arq.functionbinder.FunctionAdapter
All Implemented Interfaces:
org.apache.jena.sparql.function.Function
public class FunctionAdapter extends Object implements org.apache.jena.sparql.function.Function
Jena function implementation that delegates to a backing Java method. Instances of this class are usually generated using the FunctionGenerator.wrap(Method). Use the FunctionBinder for creating function bindings and registration of them with Jena.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected org.aksw.commons.util.convert.ConverterRegistry
    converterRegistry
     
    protected Object
    invocationTarget
     
    protected int
    mandatoryArgsCount
     
    protected Method
    method
     
    protected Param[]
    params
     
    protected Function<Object,org.apache.jena.sparql.expr.NodeValue>
    returnValueConverter
     
    protected org.apache.jena.datatypes.TypeMapper
    typeMapper
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    FunctionAdapter(Method method, Object invocationTarget, Function<Object,org.apache.jena.sparql.expr.NodeValue> returnValueConverter, Param[] params, org.apache.jena.datatypes.TypeMapper typeMapper, org.aksw.commons.util.convert.ConverterRegistry converterRegistry)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    build(String uri, org.apache.jena.sparql.expr.ExprList args, org.apache.jena.sparql.util.Context context)
     
    Object[]
    buildJavaArgs(org.apache.jena.sparql.engine.binding.Binding binding, org.apache.jena.sparql.expr.ExprList args, org.apache.jena.sparql.function.FunctionEnv env)
    Given a list of argument expressions and a binding, derive the list of corresponding Java objects to be used as the actual function arguments.
    org.apache.jena.sparql.expr.NodeValue
    exec(org.apache.jena.sparql.engine.binding.Binding binding, org.apache.jena.sparql.expr.ExprList args, String uri, org.apache.jena.sparql.function.FunctionEnv env)
     
    Object
    getInvocationTarget()
     
    Method
    getMethod()
     
    org.apache.jena.sparql.expr.NodeValue
    invokeWithJavaArgs(Object[] javaArgs)
    Invoke the wrapped method with prior built java arguments and return the result as a NodeValue.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • invocationTarget

      protected Object invocationTarget

    • method

      protected Method method

    • returnValueConverter

      protected Function<Object,org.apache.jena.sparql.expr.NodeValue> returnValueConverter

    • converterRegistry

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

    • typeMapper

      protected org.apache.jena.datatypes.TypeMapper typeMapper

    • params

      protected Param[] params

    • mandatoryArgsCount

      protected int mandatoryArgsCount

  • Constructor Details

    • FunctionAdapter

      public FunctionAdapter(Method method, Object invocationTarget, Function<Object,org.apache.jena.sparql.expr.NodeValue> returnValueConverter, Param[] params, org.apache.jena.datatypes.TypeMapper typeMapper, org.aksw.commons.util.convert.ConverterRegistry converterRegistry)

  • Method Details

    • build

      public void build(String uri, org.apache.jena.sparql.expr.ExprList args, org.apache.jena.sparql.util.Context context)
      Specified by:
      build in interface org.apache.jena.sparql.function.Function

    • exec

      public org.apache.jena.sparql.expr.NodeValue exec(org.apache.jena.sparql.engine.binding.Binding binding, org.apache.jena.sparql.expr.ExprList args, String uri, org.apache.jena.sparql.function.FunctionEnv env)
      Specified by:
      exec in interface org.apache.jena.sparql.function.Function

    • invokeWithJavaArgs

      public org.apache.jena.sparql.expr.NodeValue invokeWithJavaArgs(Object[] javaArgs)
      Invoke the wrapped method with prior built java arguments and return the result as a NodeValue.

    • buildJavaArgs

      public Object[] buildJavaArgs(org.apache.jena.sparql.engine.binding.Binding binding, org.apache.jena.sparql.expr.ExprList args, org.apache.jena.sparql.function.FunctionEnv env)
      Given a list of argument expressions and a binding, derive the list of corresponding Java objects to be used as the actual function arguments.

    • getInvocationTarget

      public Object getInvocationTarget()

    • getMethod

      public Method getMethod()