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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsRDFPropertyTestNode_h__
#define nsRDFPropertyTestNode_h__
#include "mozilla/Attributes.h"
#include "nscore.h"
#include "nsRDFTestNode.h"
#include "nsIRDFDataSource.h"
#include "nsIRDFResource.h"
#include "nsXULTemplateQueryProcessorRDF.h"
class nsRDFPropertyTestNode : public nsRDFTestNode
{
public:
/**
* Both source and target unbound (?source ^property ?target)
*/
nsRDFPropertyTestNode(TestNode* aParent,
nsXULTemplateQueryProcessorRDF* aProcessor,
nsIAtom* aSourceVariable,
nsIRDFResource* aProperty,
nsIAtom* aTargetVariable);
/**
* Source bound, target unbound (source ^property ?target)
*/
nsRDFPropertyTestNode(TestNode* aParent,
nsXULTemplateQueryProcessorRDF* aProcessor,
nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIAtom* aTargetVariable);
/**
* Source unbound, target bound (?source ^property target)
*/
nsRDFPropertyTestNode(TestNode* aParent,
nsXULTemplateQueryProcessorRDF* aProcessor,
nsIAtom* aSourceVariable,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget);
virtual nsresult FilterInstantiations(InstantiationSet& aInstantiations,
bool* aCantHandleYet) const override;
virtual bool
CanPropagate(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget,
Instantiation& aInitialBindings) const override;
virtual void
Retract(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget) const override;
class Element : public MemoryElement {
public:
Element(nsIRDFResource* aSource,
nsIRDFResource* aProperty,
nsIRDFNode* aTarget)
: mSource(aSource),
mProperty(aProperty),
mTarget(aTarget) {
MOZ_COUNT_CTOR(nsRDFPropertyTestNode::Element); }
virtual ~Element() { MOZ_COUNT_DTOR(nsRDFPropertyTestNode::Element); }
virtual const char* Type() const override {
return "nsRDFPropertyTestNode::Element"; }
virtual PLHashNumber Hash() const override {
return mozilla::HashGeneric(mSource.get(), mProperty.get(), mTarget.get());
}
virtual bool Equals(const MemoryElement& aElement) const override {
if (aElement.Type() == Type()) {
const Element& element = static_cast<const Element&>(aElement);
return mSource == element.mSource
&& mProperty == element.mProperty
&& mTarget == element.mTarget;
}
return false; }
protected:
nsCOMPtr<nsIRDFResource> mSource;
nsCOMPtr<nsIRDFResource> mProperty;
nsCOMPtr<nsIRDFNode> mTarget;
};
protected:
nsXULTemplateQueryProcessorRDF* mProcessor;
nsCOMPtr<nsIAtom> mSourceVariable;
nsCOMPtr<nsIRDFResource> mSource;
nsCOMPtr<nsIRDFResource> mProperty;
nsCOMPtr<nsIAtom> mTargetVariable;
nsCOMPtr<nsIRDFNode> mTarget;
};
#endif // nsRDFPropertyTestNode_h__
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