nsresult
nsRDFPropertyTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
bool* aCantHandleYet) const
{
nsresult rv;
if (aCantHandleYet)
*aCantHandleYet = false;
nsIRDFDataSource* ds = mProcessor->GetDataSource();
InstantiationSet::Iterator last = aInstantiations.Last();
for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
bool hasSourceBinding;
nsCOMPtr<nsIRDFResource> sourceRes;
if (mSource) {
hasSourceBinding = true;
sourceRes = mSource;
}
else {
nsCOMPtr<nsIRDFNode> sourceValue;
hasSourceBinding = inst->mAssignments.GetAssignmentFor(mSourceVariable,
getter_AddRefs(sourceValue));
sourceRes = do_QueryInterface(sourceValue);
}
bool hasTargetBinding;
nsCOMPtr<nsIRDFNode> targetValue;
if (mTarget) {
hasTargetBinding = true;
targetValue = mTarget;
}
else {
hasTargetBinding = inst->mAssignments.GetAssignmentFor(mTargetVariable,
getter_AddRefs(targetValue));
}
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
const char* source = "(unbound)";
if (hasSourceBinding)
sourceRes->GetValueConst(&source);
nsAutoString target(NS_LITERAL_STRING("(unbound)"));
if (hasTargetBinding)
nsXULContentUtils::GetTextForNode(targetValue, target);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
("nsRDFPropertyTestNode[%p]: FilterInstantiations() source=[%s] target=[%s]",
this, source, NS_ConvertUTF16toUTF8(target).get()));
}
#endif
if (hasSourceBinding && hasTargetBinding) {
// it's a consistency check. see if we have a assignment that is consistent
bool hasAssertion;
rv = ds->HasAssertion(sourceRes, mProperty, targetValue,
true, &hasAssertion);
if (NS_FAILED(rv)) return rv;
#ifdef PR_LOGGING
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" consistency check => %s", hasAssertion ? "passed" : "failed"));
#endif
if (hasAssertion) {
// it's consistent.
Element* element =
new nsRDFPropertyTestNode::Element(sourceRes, mProperty,
targetValue);
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
inst->AddSupportingElement(element);
}
else {
// it's inconsistent. remove it.
aInstantiations.Erase(inst--);
}
}
else if ((hasSourceBinding && ! hasTargetBinding) ||
(! hasSourceBinding && hasTargetBinding)) {
// it's an open ended query on the source or
// target. figure out what matches and add as a
// cross-product.
nsCOMPtr<nsISimpleEnumerator> results;
if (hasSourceBinding) {
rv = ds->GetTargets(sourceRes,
mProperty,
true,
getter_AddRefs(results));
}
else {
rv = ds->GetSources(mProperty,
targetValue,
true,
getter_AddRefs(results));
if (NS_FAILED(rv)) return rv;
}
while (1) {
bool hasMore;
rv = results->HasMoreElements(&hasMore);
if (NS_FAILED(rv)) return rv;
if (! hasMore)
break;
nsCOMPtr<nsISupports> isupports;
rv = results->GetNext(getter_AddRefs(isupports));
if (NS_FAILED(rv)) return rv;
nsIAtom* variable;
nsCOMPtr<nsIRDFNode> value;
if (hasSourceBinding) {
variable = mTargetVariable;
value = do_QueryInterface(isupports);
NS_ASSERTION(value != nullptr, "target is not an nsIRDFNode");
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
nsAutoString s(NS_LITERAL_STRING("(none found)"));
if (value)
nsXULContentUtils::GetTextForNode(value, s);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" target => %s", NS_ConvertUTF16toUTF8(s).get()));
}
#endif
if (! value) continue;
targetValue = value;
}
else {
variable = mSourceVariable;
nsCOMPtr<nsIRDFResource> source = do_QueryInterface(isupports);
NS_ASSERTION(source != nullptr, "source is not an nsIRDFResource");
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
const char* s = "(none found)";
if (source)
source->GetValueConst(&s);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" source => %s", s));
}
#endif
if (! source) continue;
value = sourceRes = source;
}
// Copy the original instantiation, and add it to the
// instantiation set with the new assignment that we've
// introduced. Ownership will be transferred to the
Instantiation newinst = *inst;
newinst.AddAssignment(variable, value);
Element* element =
new nsRDFPropertyTestNode::Element(sourceRes, mProperty,
targetValue);
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
newinst.AddSupportingElement(element);
aInstantiations.Insert(inst, newinst);
}
// finally, remove the "under specified" instantiation.
aInstantiations.Erase(inst--);
}
else {
if (!aCantHandleYet) {
nsXULContentUtils::LogTemplateError(ERROR_TEMPLATE_TRIPLE_UNBOUND);
// Neither source nor target assignment!
return NS_ERROR_UNEXPECTED;
}
*aCantHandleYet = true;
return NS_OK;
}
}
return NS_OK;
}
nsresult
nsRDFConInstanceTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
PRBool* aCantHandleYet) const
{
nsresult rv;
if (aCantHandleYet)
*aCantHandleYet = PR_FALSE;
nsCOMPtr<nsIRDFContainerUtils> rdfc
= do_GetService("@mozilla.org/rdf/container-utils;1");
if (! rdfc)
return NS_ERROR_FAILURE;
nsIRDFDataSource* ds = mProcessor->GetDataSource();
InstantiationSet::Iterator last = aInstantiations.Last();
for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
nsCOMPtr<nsIRDFNode> value;
if (! inst->mAssignments.GetAssignmentFor(mContainerVariable, getter_AddRefs(value))) {
NS_ERROR("can't do unbounded container testing");
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsIRDFResource> valueres = do_QueryInterface(value);
if (! valueres) {
aInstantiations.Erase(inst--);
continue;
}
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
const char* container = "(unbound)";
valueres->GetValueConst(&container);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
("nsRDFConInstanceTestNode[%p]::FilterInstantiations() container=[%s]",
this, container));
}
#endif
nsCOMPtr<nsIRDFContainer> rdfcontainer;
PRBool isRDFContainer;
rv = rdfc->IsContainer(ds, valueres, &isRDFContainer);
if (NS_FAILED(rv)) return rv;
if (mEmpty != eDontCare || mContainer != eDontCare) {
Test empty = eDontCare;
Test container = eDontCare;
if (isRDFContainer) {
// It's an RDF container. Use the container utilities
// to deduce what's in it.
container = eTrue;
// XXX should cache the factory
rdfcontainer = do_CreateInstance("@mozilla.org/rdf/container;1", &rv);
if (NS_FAILED(rv)) return rv;
rv = rdfcontainer->Init(ds, valueres);
if (NS_FAILED(rv)) return rv;
PRInt32 count;
rv = rdfcontainer->GetCount(&count);
if (NS_FAILED(rv)) return rv;
empty = (count == 0) ? eTrue : eFalse;
} else {
empty = eTrue;
container = eFalse;
// First do the simple check of finding some outward
// arcs; there should be only a few containment arcs, so this can
// save us time from dealing with an iterator later on
nsResourceSet& containmentProps = mProcessor->ContainmentProperties();
for (nsResourceSet::ConstIterator property = containmentProps.First();
property != containmentProps.Last();
++property) {
nsCOMPtr<nsIRDFNode> target;
rv = ds->GetTarget(valueres, *property, PR_TRUE, getter_AddRefs(target));
if (NS_FAILED(rv)) return rv;
if (target != nsnull) {
// bingo. we found one.
empty = eFalse;
container = eTrue;
break;
}
}
// if we still don't think its a container, but we
// want to know for sure whether it is or not, we need
// to check ArcLabelsOut for potential container arcs.
if (container == eFalse && mContainer != eDontCare) {
nsCOMPtr<nsISimpleEnumerator> arcsout;
rv = ds->ArcLabelsOut(valueres, getter_AddRefs(arcsout));
if (NS_FAILED(rv)) return rv;
while (1) {
PRBool hasmore;
rv = arcsout->HasMoreElements(&hasmore);
if (NS_FAILED(rv)) return rv;
if (! hasmore)
break;
nsCOMPtr<nsISupports> isupports;
rv = arcsout->GetNext(getter_AddRefs(isupports));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIRDFResource> property = do_QueryInterface(isupports);
NS_ASSERTION(property != nsnull, "not a property");
if (! property)
return NS_ERROR_UNEXPECTED;
if (mProcessor->ContainmentProperties().Contains(property)) {
container = eTrue;
break;
}
}
}
}
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" empty => %s",
(empty == mEmpty) ? "consistent" : "inconsistent"));
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" container => %s",
(container == mContainer) ? "consistent" : "inconsistent"));
if (((mEmpty == empty) && (mContainer == container)) ||
((mEmpty == eDontCare) && (mContainer == container)) ||
((mContainer == eDontCare) && (mEmpty == empty)))
{
Element* element =
nsRDFConInstanceTestNode::Element::Create(valueres, container, empty);
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
inst->AddSupportingElement(element);
}
else {
aInstantiations.Erase(inst--);
}
}
}
return NS_OK;
}
nsresult
nsRDFConMemberTestNode::FilterInstantiations(InstantiationSet& aInstantiations,
bool* aCantHandleYet) const
{
// XXX Uh, factor me, please!
nsresult rv;
if (aCantHandleYet)
*aCantHandleYet = false;
nsCOMPtr<nsIRDFContainerUtils> rdfc =
do_GetService("@mozilla.org/rdf/container-utils;1");
if (! rdfc)
return NS_ERROR_FAILURE;
nsIRDFDataSource* ds = mProcessor->GetDataSource();
InstantiationSet::Iterator last = aInstantiations.Last();
for (InstantiationSet::Iterator inst = aInstantiations.First(); inst != last; ++inst) {
bool hasContainerBinding;
nsCOMPtr<nsIRDFNode> containerValue;
hasContainerBinding = inst->mAssignments.GetAssignmentFor(mContainerVariable,
getter_AddRefs(containerValue));
nsCOMPtr<nsIRDFResource> containerRes = do_QueryInterface(containerValue);
nsCOMPtr<nsIRDFContainer> rdfcontainer;
if (hasContainerBinding && containerRes) {
// If we have a container assignment, then see if the
// container is an RDF container (bag, seq, alt), and if
// so, wrap it.
bool isRDFContainer;
rv = rdfc->IsContainer(ds, containerRes, &isRDFContainer);
if (NS_FAILED(rv)) return rv;
if (isRDFContainer) {
rdfcontainer = do_CreateInstance("@mozilla.org/rdf/container;1", &rv);
if (NS_FAILED(rv)) return rv;
rv = rdfcontainer->Init(ds, containerRes);
if (NS_FAILED(rv)) return rv;
}
}
bool hasMemberBinding;
nsCOMPtr<nsIRDFNode> memberValue;
hasMemberBinding = inst->mAssignments.GetAssignmentFor(mMemberVariable,
getter_AddRefs(memberValue));
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
const char* container = "(unbound)";
if (hasContainerBinding)
containerRes->GetValueConst(&container);
nsAutoString member(NS_LITERAL_STRING("(unbound)"));
if (hasMemberBinding)
nsXULContentUtils::GetTextForNode(memberValue, member);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
("nsRDFConMemberTestNode[%p]: FilterInstantiations() container=[%s] member=[%s]",
this, container, NS_ConvertUTF16toUTF8(member).get()));
}
#endif
if (hasContainerBinding && hasMemberBinding) {
// it's a consistency check. see if we have a assignment that is consistent
bool isconsistent = false;
if (rdfcontainer) {
// RDF containers are easy. Just use the container API.
PRInt32 index;
rv = rdfcontainer->IndexOf(memberValue, &index);
if (NS_FAILED(rv)) return rv;
if (index >= 0)
isconsistent = true;
}
// XXXwaterson oof. if we *are* an RDF container, why do
// we still need to grovel through all the containment
// properties if the thing we're looking for wasn't there?
if (! isconsistent) {
// Othewise, we'll need to grovel through the
// membership properties to see if we have an
// assertion that indicates membership.
nsResourceSet& containmentProps = mProcessor->ContainmentProperties();
for (nsResourceSet::ConstIterator property = containmentProps.First();
property != containmentProps.Last();
++property) {
bool hasAssertion;
rv = ds->HasAssertion(containerRes,
*property,
memberValue,
true,
&hasAssertion);
if (NS_FAILED(rv)) return rv;
if (hasAssertion) {
// it's consistent. leave it in the set and we'll
// run it up to our parent.
isconsistent = true;
break;
}
}
}
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" consistency check => %s", isconsistent ? "passed" : "failed"));
if (isconsistent) {
// Add a memory element to our set-of-support.
Element* element =
nsRDFConMemberTestNode::Element::Create(containerRes,
memberValue);
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
inst->AddSupportingElement(element);
}
else {
// it's inconsistent. remove it.
aInstantiations.Erase(inst--);
}
// We're done, go on to the next instantiation
continue;
}
if (hasContainerBinding && rdfcontainer) {
// We've got a container assignment, and the container is
// bound to an RDF container. Add each member as a new
// instantiation.
nsCOMPtr<nsISimpleEnumerator> elements;
rv = rdfcontainer->GetElements(getter_AddRefs(elements));
if (NS_FAILED(rv)) return rv;
while (1) {
bool hasmore;
rv = elements->HasMoreElements(&hasmore);
if (NS_FAILED(rv)) return rv;
if (! hasmore)
break;
nsCOMPtr<nsISupports> isupports;
rv = elements->GetNext(getter_AddRefs(isupports));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIRDFNode> node = do_QueryInterface(isupports);
if (! node)
return NS_ERROR_UNEXPECTED;
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
nsAutoString member;
nsXULContentUtils::GetTextForNode(node, member);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" member => %s", NS_ConvertUTF16toUTF8(member).get()));
}
#endif
Instantiation newinst = *inst;
newinst.AddAssignment(mMemberVariable, node);
Element* element =
nsRDFConMemberTestNode::Element::Create(containerRes, node);
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
newinst.AddSupportingElement(element);
aInstantiations.Insert(inst, newinst);
}
}
if (hasMemberBinding) {
// Oh, this is so nasty. If we have a member assignment, then
// grovel through each one of our inbound arcs to see if
// any of them are ordinal properties (like an RDF
// container might have). If so, walk it backwards to get
// the container we're in.
nsCOMPtr<nsISimpleEnumerator> arcsin;
rv = ds->ArcLabelsIn(memberValue, getter_AddRefs(arcsin));
if (NS_FAILED(rv)) return rv;
while (1) {
nsCOMPtr<nsIRDFResource> property;
{
bool hasmore;
rv = arcsin->HasMoreElements(&hasmore);
if (NS_FAILED(rv)) return rv;
if (! hasmore)
break;
nsCOMPtr<nsISupports> isupports;
rv = arcsin->GetNext(getter_AddRefs(isupports));
if (NS_FAILED(rv)) return rv;
property = do_QueryInterface(isupports);
if (! property)
return NS_ERROR_UNEXPECTED;
}
// Ordinal properties automagically indicate container
// membership as far as we're concerned. Note that
// we're *only* concerned with ordinal properties
// here: the next block will worry about the other
// membership properties.
bool isordinal;
rv = rdfc->IsOrdinalProperty(property, &isordinal);
if (NS_FAILED(rv)) return rv;
if (isordinal) {
// If we get here, we've found a property that
// indicates container membership leading *into* a
// member node. Find all the people that point to
// it, and call them containers.
nsCOMPtr<nsISimpleEnumerator> sources;
rv = ds->GetSources(property, memberValue, true,
getter_AddRefs(sources));
if (NS_FAILED(rv)) return rv;
while (1) {
bool hasmore;
rv = sources->HasMoreElements(&hasmore);
if (NS_FAILED(rv)) return rv;
if (! hasmore)
break;
nsCOMPtr<nsISupports> isupports;
rv = sources->GetNext(getter_AddRefs(isupports));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIRDFResource> source = do_QueryInterface(isupports);
if (! source)
return NS_ERROR_UNEXPECTED;
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
const char* container;
source->GetValueConst(&container);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" container => %s", container));
}
#endif
// Add a new instantiation
Instantiation newinst = *inst;
newinst.AddAssignment(mContainerVariable, source);
Element* element =
nsRDFConMemberTestNode::Element::Create(source,
memberValue);
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
newinst.AddSupportingElement(element);
aInstantiations.Insert(inst, newinst);
}
}
}
}
if ((hasContainerBinding && ! hasMemberBinding) ||
(! hasContainerBinding && hasMemberBinding)) {
// it's an open ended query on the container or member. go
// through our containment properties to see if anything
// applies.
nsResourceSet& containmentProps = mProcessor->ContainmentProperties();
for (nsResourceSet::ConstIterator property = containmentProps.First();
property != containmentProps.Last();
++property) {
nsCOMPtr<nsISimpleEnumerator> results;
if (hasContainerBinding) {
rv = ds->GetTargets(containerRes, *property, true,
getter_AddRefs(results));
}
else {
rv = ds->GetSources(*property, memberValue, true,
getter_AddRefs(results));
}
if (NS_FAILED(rv)) return rv;
while (1) {
bool hasmore;
rv = results->HasMoreElements(&hasmore);
if (NS_FAILED(rv)) return rv;
if (! hasmore)
break;
nsCOMPtr<nsISupports> isupports;
rv = results->GetNext(getter_AddRefs(isupports));
if (NS_FAILED(rv)) return rv;
nsIAtom* variable;
nsCOMPtr<nsIRDFNode> value;
nsCOMPtr<nsIRDFResource> valueRes;
if (hasContainerBinding) {
variable = mMemberVariable;
value = do_QueryInterface(isupports);
NS_ASSERTION(value != nsnull, "member is not an nsIRDFNode");
if (! value) continue;
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
nsAutoString s;
nsXULContentUtils::GetTextForNode(value, s);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" member => %s", NS_ConvertUTF16toUTF8(s).get()));
}
#endif
}
else {
variable = mContainerVariable;
valueRes = do_QueryInterface(isupports);
NS_ASSERTION(valueRes != nsnull, "container is not an nsIRDFResource");
if (! valueRes) continue;
value = valueRes;
#ifdef PR_LOGGING
if (PR_LOG_TEST(gXULTemplateLog, PR_LOG_DEBUG)) {
const char* s;
valueRes->GetValueConst(&s);
PR_LOG(gXULTemplateLog, PR_LOG_DEBUG,
(" container => %s", s));
}
#endif
}
// Copy the original instantiation, and add it to the
// instantiation set with the new assignment that we've
// introduced. Ownership will be transferred to the
Instantiation newinst = *inst;
newinst.AddAssignment(variable, value);
Element* element;
if (hasContainerBinding) {
element =
nsRDFConMemberTestNode::Element::Create(containerRes, value);
}
else {
element =
nsRDFConMemberTestNode::Element::Create(valueRes, memberValue);
}
if (! element)
return NS_ERROR_OUT_OF_MEMORY;
newinst.AddSupportingElement(element);
aInstantiations.Insert(inst, newinst);
}
}
}
if (! hasContainerBinding && ! hasMemberBinding) {
// Neither container nor member assignment!
if (!aCantHandleYet) {
nsXULContentUtils::LogTemplateError(ERROR_TEMPLATE_MEMBER_UNBOUND);
return NS_ERROR_UNEXPECTED;
}
*aCantHandleYet = true;
return NS_OK;
}
// finally, remove the "under specified" instantiation.
aInstantiations.Erase(inst--);
}
return NS_OK;
}