/**
* Return the relation with name "id" if it can be applied to this component.
*
* <p>A relation D can be applied on a component source if D.Id == id D.source must be the name of
* source or of an ancestor of source, and D.SourceKind == source.getKind.
*
* <p>Looks in the group, and then in the composite type, if source in an instance in all
* composite types if source is an implem.
*
* @param source
* @param id
* @return
*/
@Override
public RelationDefinition getRelation(String id) {
RelationDefinition dep = null;
Component group = this;
while (group != null) {
dep = ((ComponentImpl) group).getLocalRelation(id);
if (dep != null) {
return dep;
}
group = group.getGroup();
}
// Looking for composite definitions.
if (this instanceof Instance) {
CompositeType comptype = ((Instance) this).getComposite().getCompType();
dep = comptype.getCtxtRelation(this, id);
if (dep != null) {
return dep;
}
}
if (this instanceof Implementation) {
for (CompositeType comptype : ((Implementation) this).getInCompositeType()) {
dep = comptype.getCtxtRelation(this, id);
if (dep != null) {
return dep;
}
}
}
return null;
}
/** Warning : do not resolve ! */
@Override
public Set<Link> getRawLinks() {
Set<Link> allLinks = new HashSet<Link>();
Component group = this;
while (group != null) {
allLinks.addAll(((ComponentImpl) group).getLocalLinks());
group = group.getGroup();
}
return allLinks;
}
/** Whether this component is an ancestor of the specified component */
@Override
public boolean isAncestorOf(Component member) {
assert member != null;
Component ancestor = member.getGroup();
while (ancestor != null && !ancestor.equals(this)) {
ancestor = ancestor.getGroup();
}
return ancestor != null;
}
/**
* Return the first link having this name, on any ancestor, but do not try to resolve is none are
* found
*
* @param relName
* @return
*/
public Link getExistingLink(String relName) {
Component group = this;
while (group != null) {
for (Link link : ((ComponentImpl) group).getLocalLinks()) {
if (link.getName().equals(relName)) {
return link;
}
}
group = group.getGroup();
}
return null;
}
/**
* Return all the link of that names, but do not resolve if nore are found
*
* @param relName
* @return
*/
public Set<Link> getExistingLinks(String relName) {
Set<Link> dests = new HashSet<Link>();
Component group = this;
while (group != null) {
for (Link link : ((ComponentImpl) group).getLocalLinks()) {
if (link.getName().equals(relName)) {
dests.add(link);
}
}
group = group.getGroup();
}
return dests;
}
@Override
public boolean setLink(Component destInst, String depName) {
/*
* Propagate down the group hierarchy.
*
* TODO Should we stop in case of a veto from one of the members?
*/
for (Component member : apamComponent.getMembers()) {
member.getApformComponent().setLink(destInst, depName);
}
return true;
}
@Override
public Set<ResourceReference> getProvidedResources() {
Set<ResourceReference> provided = new HashSet<ResourceReference>();
/*
* add all provided resources declared at all levels of abstraction
*/
Component ancestor = this;
while (ancestor != null) {
provided.addAll(ancestor.getDeclaration().getProvidedResources());
ancestor = ancestor.getGroup();
}
return Collections.unmodifiableSet(provided);
}
/**
* Tries to find the definition of attribute "attr" associated with component "component". Returns
* null if the attribute is not explicitly defined
*
* @param component
* @param attr
* @return
*/
public PropertyDefinition getAttrDefinition(String attr) {
// PropertyDefinition definition =
// getDeclaration().getPropertyDefinition(attr);
// if (definition != null) {
// return definition;
// }
PropertyDefinition definition = null;
Component group = this; // .getGroup();
while (group != null) {
definition = group.getDeclaration().getPropertyDefinition(attr);
if (definition != null) {
return definition;
}
group = group.getGroup();
}
return null;
}
@Override
public Set<RelationDefinition> getRelations() {
Set<RelationDefinition> relDefs = new HashSet<RelationDefinition>();
Set<String> processed = new HashSet<String>();
Component group = this;
while (group != null) {
for (RelationDefinition relDef : group.getLocalRelations()) {
if (!processed.contains(relDef.getName())) {
relDefs.add(relDef);
processed.add(relDef.getName());
}
}
group = group.getGroup();
}
// Looking for composite definitions.
if (this instanceof Instance) {
CompositeType comptype = ((Instance) this).getComposite().getCompType();
for (RelationDefinition relDef : comptype.getCtxtRelations(this)) {
if (!processed.contains(relDef.getName())) {
relDefs.add(relDef);
processed.add(relDef.getName());
}
}
}
if (this instanceof Implementation) {
for (CompositeType comptype : ((Implementation) this).getInCompositeType()) {
for (RelationDefinition relDef : comptype.getCtxtRelations(this)) {
if (!processed.contains(relDef.getName())) {
relDefs.add(relDef);
processed.add(relDef.getName());
}
}
}
}
return relDefs;
}
/**
* Given a relation declared in this component, checks if the provided override relation matches
* the relation declaration.
*
* <p>To be applied on a component C, the override must be such that : id matches the override id
* source must be the name of C or of an ancestor of C. target must be the same type (resource of
* component, and its name must match).
*/
public boolean matchOverride(RelationDeclaration relation, RelationDeclaration override) {
// Overrides are currently only valid for instance
boolean match = (this instanceof Instance);
if (!match) {
return false;
}
// Check if override source matches this component or one of its
// ancestors
match = false;
Component group = this;
while (group != null && !match) {
match = override.refines(group.getDeclaration().getReference(), relation);
group = group.getGroup();
}
return match;
}
@Override
public Link getLink(String relName) {
Component group = this;
while (group != null) {
for (Link link : ((ComponentImpl) group).getLocalLinks()) {
if (link.getName().equals(relName)) {
return link;
}
}
group = group.getGroup();
}
// None are present. Try to resolve
RelationDefinition rel = getRelation(relName);
if (rel == null) {
logger.error("relation " + relName + " undefined for " + this);
return null;
}
Component source = rel.getRelSource(this);
CST.apamResolver.resolveLink(source, rel);
return getExistingLink(relName);
}
/**
* To be called once the Apam entity is fully initialized.
*
* <p>Computes all its attributes, including inheritance. Checks if initial properties are
* consistent with the declarations.
*
* <p>NOTE this method is also called when the owner changes, to force recalculation of
* substitutions that depend on the current owner.
*/
private void initializeProperties(Map<String, String> initialProperties) {
Component group = getGroup();
/*
* Currently the instance declaration may include invalid properties.
*
* For declared instances this should not happen as the declaration is validated at build-time. For dynamically
* created instances (using the APAM API or the apform API directly) this should be validated by this method.
*
* However, there are many properties added by the iPOJO apform layer that need to be ignored, so we simply
* silently ignore all invalid properties.
*
* TODO We should be able to distinguish properties specified by the user that must be validated, from properties
* used internally by the iPOJO apform.
*/
Set<String> invalidDeclaredProperties = new HashSet<String>();
for (String property : getDeclaration().getProperties().keySet()) {
boolean isDefined =
getDeclaration().isDefined(property)
|| (group != null && group.getPropertyDefinition(property) != null);
if (!isDefined) {
invalidDeclaredProperties.add(property);
}
if (group != null && group.getProperty(property) != null) {
invalidDeclaredProperties.add(property);
}
}
getDeclaration().getProperties().keySet().removeAll(invalidDeclaredProperties);
/*
* Merge initial and declared properties.
*
*/
Map<String, String> fullInitialProperties =
new HashMap<String, String>(getDeclaration().getProperties());
if (initialProperties != null) {
fullInitialProperties.putAll(initialProperties);
fullInitialProperties.remove("instance.name");
}
/*
* NOTE In the case of change owner, the initial properties include inherited values from the group,
* we ignore them to avoid false error messages, they will be added later by the normal inheritance
* mechanism
*
* TODO Distinguish the case of change owner from a real initialization
*/
if (initialProperties != null && group != null) {
for (Map.Entry<String, String> initialProperty : initialProperties.entrySet()) {
if (group.getProperty(initialProperty.getKey()) != null
&& group.getProperty(initialProperty.getKey()).equals(initialProperty.getValue())) {
fullInitialProperties.remove(initialProperty.getKey());
}
}
}
// start cleaning the properties (normally empty)
clear();
/*
* First add the valid attributes.
*/
for (Map.Entry<String, String> initialProperty : fullInitialProperties.entrySet()) {
PropertyDefinition def = validDef(initialProperty.getKey(), true);
if (def != null) {
Object val =
Attribute.checkAttrType(
initialProperty.getKey(), initialProperty.getValue(), def.getType());
if (val != null) {
put(initialProperty.getKey(), val);
}
}
}
/*
* then add those coming from its group, avoiding overloads.
*/
if (group != null) {
for (String attr : group.getAllProperties().keySet()) {
if (get(attr) == null) {
put(attr, ((ComponentImpl) group).get(attr));
}
}
}
/*
* Add the default values specified in the group for properties not explicitly specified
*/
if (group != null) {
for (PropertyDefinition definition : group.getDeclaration().getPropertyDefinitions()) {
if (definition.hasDefaultValue()
&& get(definition.getName()) == null
&& definition.getInjected() != InjectedPropertyPolicy.INTERNAL) {
Object val =
Attribute.checkAttrType(
definition.getName(), definition.getDefaultValue(), definition.getType());
if (val != null) {
put(definition.getName(), val);
}
}
}
}
/*
* Set the attribute for the final attributes
*/
put(CST.SHARED, Boolean.toString(isShared()));
put(CST.SINGLETON, Boolean.toString(isSingleton()));
put(CST.INSTANTIABLE, Boolean.toString(isInstantiable()));
/*
* Finally add the specific attributes.
* Should be the only place where instanceof is used.
*/
put(CST.NAME, apform.getDeclaration().getName());
if (this instanceof Specification) {
put(CST.SPECNAME, apform.getDeclaration().getName());
} else if (this instanceof Implementation) {
put(CST.IMPLNAME, apform.getDeclaration().getName());
if (this instanceof CompositeType) {
put(CST.APAM_COMPOSITETYPE, CST.V_TRUE);
}
} else if (this instanceof Instance) {
put(CST.INSTNAME, apform.getDeclaration().getName());
if (this instanceof Composite) {
Composite composite = (Composite) this;
put(CST.APAM_COMPOSITE, CST.V_TRUE);
if (composite.getMainInst() != null) {
put(CST.APAM_MAIN_INSTANCE, composite.getMainInst().getName());
}
}
}
/*
* and propagate, to the platform and to members, in case the spec has been created after the implem
*/
for (Map.Entry<String, Object> entry : this.entrySet()) {
for (Component member : getMembers()) {
((ComponentImpl) member).propagate(entry.getKey(), entry.getValue());
}
}
}
/**
* Provided a component, compute its effective relations definition, adding group constraint and
* flags. It is supposed to be correct !! No failure expected
*
* <p>Does not add those dependencies defined "above". For relations refined locally, merge the
* local definition with the group definition.
*
* <p>For instances only, add the relation definition overridden by the composite.
*
* <p>Remove those links that are not valid with the computed relation definition (for
* changeOwner)
*/
private void initializeRelations() {
/*
* First we need to compute the list of relations that must be locally
* defined in this component. We consider locally defined relation
* declarations and overridden inherited relations.
*/
Set<RelationDeclaration> overrides = null;
if (this instanceof Instance) {
overrides =
((Instance) this)
.getComposite()
.getCompType()
.getCompoDeclaration()
.getOverridenDependencies();
} else overrides = Collections.emptySet();
Set<RelationDeclaration> localRelations = new HashSet<RelationDeclaration>();
Set<String> processed = new HashSet<String>();
Component group = this;
while (group != null) {
for (RelationDeclaration relationDeclaration : group.getDeclaration().getRelations()) {
/*
* Ignore relations already processed at a lower level
*/
if (processed.contains(relationDeclaration.getIdentifier())) {
continue;
}
/*
* Check overridden relations
*/
boolean matchOverride = false;
for (RelationDeclaration override : overrides) {
// for (RelationDeclaration override : overrides != null ? overrides
// : Collections.<RelationDeclaration> emptySet()) {
if (matchOverride(relationDeclaration, override)) {
relationDeclaration = relationDeclaration.overriddenBy(override);
matchOverride = true;
}
}
/*
* Process locally declared and inherited overridden relations
*/
if (group == this || matchOverride) {
localRelations.add(relationDeclaration);
processed.add(relationDeclaration.getIdentifier());
}
}
group = group.getGroup();
}
/*
* Define all the local relations definition of this component
*/
for (RelationDeclaration relationDeclaration : localRelations) {
/*
* Local declarations may be partial definitions, we need to compute
* the complete declaration by refining the ancestor definition.
*/
RelationDefinition base = this.getRelation(relationDeclaration.getIdentifier());
relationDeclaration =
(base == null)
? relationDeclaration
: ((RelationDefinitionImpl) base).refinedBy(relationDeclaration);
relDef.put(
relationDeclaration.getIdentifier(), new RelationDefinitionImpl(relationDeclaration));
}
/*
* If the component has links, remove those that are invalid (for changeOwner)
* Also remove the link if it is a promotion, since we are no longer in the same composite
*/
for (Link localLink : getLocalLinks()) {
if (localLink.isPromotion() || !localLink.isValid()) localLink.remove();
}
for (Link incoming : getInvLinks()) {
if (incoming.isPromotion() || !incoming.isValid()) incoming.remove();
}
}
@Override
public boolean createLink(
Component to, RelToResolve dep, boolean hasConstraints, boolean promotion) {
// Not a relation : a find
if (!dep.isRelation()) {
return true;
}
if (CST.isFinalRelation(dep.getName())) {
logger.error("CreateLink: cannot create predefined relation " + dep.getName());
return false;
}
if ((to == null) || (dep == null)) {
logger.error("CreateLink: Source or target are null ");
return false;
}
if (!promotion && !canSee(to)) {
logger.error("CreateLink: Source " + this + " does not see its target " + to);
return false;
}
if (this.getKind() != dep.getSourceKind()) {
logger.error(
"CreateLink: Source kind "
+ getKind()
+ " is not compatible with relation sourceType "
+ dep.getSourceKind());
return false;
}
if (to.getKind() != dep.getTargetKind()) {
logger.error(
"CreateLink: Target kind "
+ to.getKind()
+ " is not compatible with relation targetType "
+ dep.getTargetKind());
return false;
}
if (hasConstraints && !dep.matchRelationConstraints(to)) {
logger.error("CreateLink: Target does not satisfies the constraints");
return false;
}
String depName = dep.getName();
for (Link link : links) { // check if it already exists
if ((link.getDestination() == to) && link.getName().equals(depName)) {
// It exists, do nothing.
return true;
}
}
// creation
if (!getApformComponent().checkLink(to, depName)) {
logger.error(
"CreateLink: INTERNAL ERROR: link from "
+ this
+ " to "
+ to
+ " could not be created in the real instance.");
return false;
}
Link link = new LinkImpl(this, to, dep, hasConstraints, promotion);
links.add(link);
((ComponentImpl) to).invlinks.add(link);
getApformComponent().setLink(to, depName);
// Notify Dynamic managers that a new link has been created
for (DynamicManager manager : ApamManagers.getDynamicManagers()) {
manager.addedLink(link);
}
return true;
}
/** TODO Assumes that all components are in the same name space, including instance !! */
@Override
public int compareTo(Component that) {
return this.getName().compareTo(that.getName());
}
/** Whether this component is a descendant of the specified component */
@Override
public boolean isDescendantOf(Component group) {
assert group != null;
return group.isAncestorOf(this);
}
