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Support for XQuery components
/*
* Fabric3
* Copyright (c) 2009-2011 Metaform Systems
*
* Fabric3 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version, with the
* following exception:
*
* Linking this software statically or dynamically with other
* modules is making a combined work based on this software.
* Thus, the terms and conditions of the GNU General Public
* License cover the whole combination.
*
* As a special exception, the copyright holders of this software
* give you permission to link this software with independent
* modules to produce an executable, regardless of the license
* terms of these independent modules, and to copy and distribute
* the resulting executable under terms of your choice, provided
* that you also meet, for each linked independent module, the
* terms and conditions of the license of that module. An
* independent module is a module which is not derived from or
* based on this software. If you modify this software, you may
* extend this exception to your version of the software, but
* you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*
* Fabric3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the
* GNU General Public License along with Fabric3.
* If not, see > {
private ContractMatcher matcher;
public XQueryComponentGenerator(@Reference ContractMatcher matcher) {
this.matcher = matcher;
}
public PhysicalComponentDefinition generate(LogicalComponent component) throws GenerationException {
ComponentDefinition definition = component.getDefinition();
XQueryComponentDefinition physical = new XQueryComponentDefinition();
physical.setLocation(definition.getImplementation().getLocation());
physical.setContext(definition.getImplementation().getContext());
processPropertyValues(component, physical);
refineServiceContracts(component, physical);
//create the functionDefinitions for services and references as well as property mapping
return physical;
}
private void refineServiceContracts(LogicalComponent component, XQueryComponentDefinition physical) {
Map> serviceFunctions = new HashMap>();
Map> referenceFunctions = new HashMap>();
Map> callbackFunctions = new HashMap>();
//Map> referenceCallbackFunctions = new HashMap>();
Map references = new HashMap();
Map services = new HashMap();
//TODO need to find a more optimal way to dynamically override service contracts
//This builds up a map of service and reference service contracts to be used in case
//the definition does not explicitly set one (the XQueryService contract can be too generic)
for (LogicalComponent lc : component.getParent().getComponents()) {
for (LogicalReference lr : (Collection) lc.getReferences()) {
for (LogicalWire wire : component.getParent().getWires(lr)) {
URI targetUri = UriHelper.getDefragmentedName(wire.getTarget().getUri());
if (component.getUri().equals(targetUri)) {
String serviceName = wire.getTarget().getUri().getFragment();
services.put(serviceName, lr.getDefinition().getServiceContract());
}
}
}
}
for (LogicalReference lr : component.getReferences()) {
for (LogicalWire wire : component.getParent().getWires(lr)) {
URI sourceUri = UriHelper.getDefragmentedName(wire.getTarget().getUri());
LogicalComponent lc = component.getParent().getComponent(sourceUri);
String referenceName = wire.getTarget().getUri().getFragment();
references.put(referenceName, lc.getService(referenceName).getDefinition().getServiceContract());
}
}
ComponentDefinition definition = component.getDefinition();
for (Map.Entry entry : definition.getImplementation().getComponentType().getServices().entrySet()) {
String serviceName = entry.getKey();
XQueryServiceContract service = (XQueryServiceContract) entry.getValue().getServiceContract();
if (service.getQname() == null && "XQueryService".equals(serviceName)) {
continue;
}
addFunctions(entry.getKey(), service, serviceFunctions);
if (service.getCallbackContract() != null) {
XQueryServiceContract callback = (XQueryServiceContract) service.getCallbackContract();
addFunctions(callback.getQname().getLocalPart(), callback, callbackFunctions);
}
ComponentService compService = definition.getServices().get(serviceName);
if (compService != null && compService.getServiceContract() != null) { //override the ServiceContract with a more specific type
entry.getValue().setServiceContract(compService.getServiceContract());
} else {//not explicitly set, obtain the reference to the service from the composite if available
ServiceContract contract = services.get(serviceName);
if (contract != null) {
entry.getValue().setServiceContract(contract);
} else {
//System.out.println("Warning, unable to refine contract " + entry.getValue().getName());
}
}
}
for (Map.Entry entry : definition.getImplementation().getComponentType().getReferences().entrySet()) {
String referenceName = entry.getKey();
XQueryServiceContract reference = (XQueryServiceContract) entry.getValue().getServiceContract();
addFunctions(entry.getKey(), reference, referenceFunctions);
ComponentReference compReference = definition.getReferences().get(referenceName);
if (compReference != null && compReference.getServiceContract() != null) { //override the ServiceContract with a more specific type
entry.getValue().setServiceContract(compReference.getServiceContract());
} else {//not explicitly set, obtain the reference to the service from the composite if available
ServiceContract contract = references.get(referenceName);
if (contract != null) {
entry.getValue().setServiceContract(contract);
} else {
//System.out.println("Warning, unable to refine contract " + entry.getValue().getName());
}
}
}
physical.setServiceFunctions(serviceFunctions);
physical.setReferenceFunctions(referenceFunctions);
physical.setCallbackFunctions(callbackFunctions);
}
private void processPropertyValues(LogicalComponent component, XQueryComponentDefinition physical) {
for (LogicalProperty property : component.getAllProperties().values()) {
Document document = property.getValue();
if (document != null) {
String name = property.getName();
boolean many = property.isMany();
PhysicalPropertyDefinition definition = new PhysicalPropertyDefinition(name, document, many);
physical.setPropertyDefinition(definition);
}
}
Map properties = new HashMap();
ComponentDefinition definition = component.getDefinition();
for (Map.Entry entry : definition.getImplementation().getComponentType().getProperties().entrySet()) {
if (entry.getValue() instanceof XQueryProperty) {
XQueryProperty property = (XQueryProperty) entry.getValue();
properties.put(entry.getKey(), property.getVariableName());
}
}
physical.setProperties(properties);
}
private void addFunctions(String name, XQueryServiceContract contract, Map> mappings) {
List functions = new ArrayList();
mappings.put(name, functions);
for (Operation o : contract.getOperations()) {
QName functionName = new QName(contract.getQname().getNamespaceURI(), o.getName(), contract.getQname().getPrefix());
functions.add(functionName);
}
}
public XQueryComponentSourceDefinition generateSource(LogicalReference reference, EffectivePolicy policy) throws GenerationException {
XQueryComponentSourceDefinition sourceDefinition = new XQueryComponentSourceDefinition();
sourceDefinition.setUri(reference.getUri());
if (reference.getDefinition().getServiceContract().isConversational()) {
sourceDefinition.setInteractionType(InteractionType.CONVERSATIONAL);
}
return sourceDefinition;
}
@SuppressWarnings({"unchecked"})
public PhysicalSourceDefinition generateCallbackSource(LogicalService service, EffectivePolicy policy) throws GenerationException {
ServiceContract callbackContract = service.getDefinition().getServiceContract().getCallbackContract();
XQueryComponentSourceDefinition sourceDefinition = new XQueryComponentSourceDefinition();
LogicalComponent source = (LogicalComponent) service.getParent();
XQueryComponentType type = source.getDefinition().getImplementation().getComponentType();
String name = null;
for (Map.Entry entry : type.getServices().entrySet()) {
ServiceContract candidateContract = entry.getValue().getServiceContract();
MatchResult result = matcher.isAssignableFrom(candidateContract, callbackContract, false);
if (result.isAssignable()) {
name = entry.getKey();
break;
}
}
if (name == null) {
String interfaze = callbackContract.getQualifiedInterfaceName();
throw new GenerationException("Callback not found for type: " + interfaze, interfaze);
}
sourceDefinition.setUri(URI.create(source.getUri().toString() + "#" + name));
sourceDefinition.setOptimizable(false);
return sourceDefinition;
}
public PhysicalTargetDefinition generateTarget(LogicalService service, EffectivePolicy policy) throws GenerationException {
XQueryComponentTargetDefinition targetDefinition = new XQueryComponentTargetDefinition();
targetDefinition.setUri(service.getUri());
return targetDefinition;
}
public PhysicalConnectionSourceDefinition generateConnectionSource(LogicalProducer producer) {
throw new UnsupportedOperationException();
}
public PhysicalConnectionTargetDefinition generateConnectionTarget(LogicalConsumer consumer) throws GenerationException {
throw new UnsupportedOperationException();
}
public PhysicalSourceDefinition generateResourceSource(LogicalResourceReference resourceReference) throws GenerationException {
XQueryComponentSourceDefinition sourceDefinition = new XQueryComponentSourceDefinition();
sourceDefinition.setUri(resourceReference.getParent().getUri());
return sourceDefinition;
}
}
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