@Override
public Project registerFacet(final Facet facet) {
if (facet == null) {
throw new IllegalArgumentException(
"Attempted to register 'null' as a Facet; Facets cannot be null.");
}
if (facet.getDependencies() != null) {
for (Class<? extends Facet> type : facet.getDependencies()) {
if (!hasFacet(type)) {
throw new IllegalStateException(
"Attempting to register a Facet that has missing dependencies: ["
+ facet.getClass().getSimpleName()
+ " requires -> "
+ type.getSimpleName()
+ "]");
}
}
}
facet.init(this);
if (facet.isInstalled() && !hasFacet(facet.getClass())) {
facets.add(facet);
}
return this;
}
@Override
public Project installFacet(final Facet facet) {
facet.init(this);
if (!facet.isInstalled() && !hasFacet(facet.getClass())) {
facet.install();
facets.add(facet);
} else if (!hasFacet(facet.getClass())) {
registerFacet(facet);
}
return this;
}
@Override
@SuppressWarnings("unchecked")
public <F extends Facet> List<F> getFacets(final Class<F> type) {
List<F> result = new ArrayList<F>();
for (Facet facet : facets) {
if ((facet != null) && facet.getClass().isAssignableFrom(type)) {
result.add((F) facet);
}
}
return result;
}
@Override
@SuppressWarnings("unchecked")
public <F extends Facet> F getFacet(final Class<F> type) {
Facet result = null;
for (Facet facet : facets) {
if ((facet != null) && type.isAssignableFrom(facet.getClass())) {
result = facet;
break;
}
}
if (result == null) {
throw new FacetNotFoundException(
"The requested facet of type ["
+ type.getName()
+ "] was not found. The facet is not installed.");
}
return (F) result;
}