eu.larkc.core.query
Class VariableBindingBase

java.lang.Object
  eu.larkc.core.query.VariableBindingBase

All Implemented Interfaces:

InformationSet, VariableBinding, java.io.Serializable

Direct Known Subclasses:

ORDIVariableBinding, SelectXMLVariableBinding

public class VariableBindingBase
extends java.lang.Object
implements VariableBinding

VariableBindingBase is an abstract class to implement asynchronous streaming of RDF variable bindings. All implementing classes must: 1. Invoke super.notifyAll() after setting bindNames 2. Put next the next binding results with results.put(X).

Author:

vassil

See Also:

Serialized Form

Nested Class Summary

class	VariableBindingBase.BindingIterator This class iterates an asynchronous blocking and returns back the results on demand.
class	VariableBindingBase.FinalBindingSet Helper class to denote the end of the streamed solutions.
class	VariableBindingBase.WrappedBinding Helper class to transform a Sesame to LarKC binding.

Nested classes/interfaces inherited from interface eu.larkc.core.data.VariableBinding

VariableBinding.Binding

Field Summary

static org.openrdf.model.BNode	vbbBNode
static org.openrdf.model.URI	vbbPredicate

Constructor Summary

VariableBindingBase()

Method Summary

java.util.List<java.lang.String>	getVariables() Gets the list of variables in the projection.
CloseableIterator<VariableBinding.Binding>	iterator() Gets an iterator of the solutions.
SetOfStatements	toRDF() Return an RDF representation of this object TODO:This should be fixed to really use RDF and not the CheatingInMemoryObjectStore
SetOfStatements	toRDF(SetOfStatements data) Serializes this object to SetOfStatements.

Methods inherited from class java.lang.Object

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

Field Detail

vbbPredicate

public static final org.openrdf.model.URI vbbPredicate

vbbBNode

public static final org.openrdf.model.BNode vbbBNode

Constructor Detail

VariableBindingBase

public VariableBindingBase()

Method Detail

getVariables

public java.util.List<java.lang.String> getVariables()

Description copied from interface: VariableBinding

Gets the list of variables in the projection.

Specified by:

getVariables in interface VariableBinding

Returns:

a list of variables

iterator

public CloseableIterator<VariableBinding.Binding> iterator()

Description copied from interface: VariableBinding

Gets an iterator of the solutions.

Specified by:

iterator in interface VariableBinding

Returns:

iterator to the data

toRDF

public SetOfStatements toRDF()

Return an RDF representation of this object TODO:This should be fixed to really use RDF and not the CheatingInMemoryObjectStore

Returns:

toRDF

public SetOfStatements toRDF(SetOfStatements data)

Description copied from interface: InformationSet

Serializes this object to SetOfStatements.

Specified by:

toRDF in interface InformationSet

Parameters:

data - is stream to serialize this object to.

Returns:

reference to the set of statements that contains the serialized data.