/**
* Copyright 2005-2016 Red Hat, Inc.
*
* Red Hat licenses this file to you under the Apache License, version
* 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package io.fabric8.cdi;
import javax.enterprise.inject.spi.AnnotatedMethod;
import javax.enterprise.inject.spi.Bean;
import java.lang.reflect.Type;
import java.util.LinkedHashSet;
import java.util.Set;
public class FactoryMethodContext {
private final Bean bean;
private final Type sourceType;
private final Type returnType;
private final AnnotatedMethod factoryMethod;
public FactoryMethodContext(Bean bean, Type sourceType, Type returnType, AnnotatedMethod factoryMethod) {
this.bean = bean;
this.sourceType = sourceType;
this.returnType = returnType;
this.factoryMethod = factoryMethod;
}
public Bean getBean() {
return bean;
}
public Type getSourceType() {
return sourceType;
}
public Type getReturnType() {
return returnType;
}
public AnnotatedMethod getFactoryMethod() {
return factoryMethod;
}
public static Set<FactoryMethodContext> sort(Set<FactoryMethodContext> items) {
Set<FactoryMethodContext> sorted = new LinkedHashSet<>();
Set<FactoryMethodContext> visited = new LinkedHashSet<>();
for (FactoryMethodContext e : items) {
visit(e, items, visited, sorted);
}
return sorted;
}
private static void visit(FactoryMethodContext item, Set<FactoryMethodContext> all, Set<FactoryMethodContext> visited, Set<FactoryMethodContext> sorted) {
if (!visited.add(item)) {
return;
}
for (FactoryMethodContext t : collectDependencies(item, all)) {
visit(t, all, visited, sorted);
}
sorted.add(item);
}
private static Set<FactoryMethodContext> collectDependencies(FactoryMethodContext item, Set<FactoryMethodContext> all) {
Set<FactoryMethodContext> dependencies = new LinkedHashSet<>();
for (FactoryMethodContext candidate : all) {
if (item.getSourceType().equals(candidate.getReturnType())) {
dependencies.add(candidate);
}
}
return dependencies;
}
}