org.jboss.qa.phaser.registry.SimpleInstanceRegistry.java Source code

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Here is the source code for org.jboss.qa.phaser.registry.SimpleInstanceRegistry.java

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/*
 * Copyright 2015 Red Hat Inc. and/or its affiliates and other contributors.
 *
 * Licensed 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 org.jboss.qa.phaser.registry;

import org.apache.commons.lang3.ClassUtils;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class SimpleInstanceRegistry implements InstanceRegistry {

    private Map<String, Object> namedInstances = new HashMap<>();
    private Map<Class<?>, List<Object>> typedInstances = new HashMap<>();

    public void insert(Object o) {
        insert(o, o.getClass());
        insert(o, ClassUtils.getAllInterfaces(o.getClass()));
        insert(o, ClassUtils.getAllSuperclasses(o.getClass()));
    }

    private void insert(Object o, List<Class<?>> classes) {
        for (Class<?> c : classes) {
            insert(o, c);
        }
    }

    private void insert(Object o, Class<?> c) {
        List<Object> instances = typedInstances.get(c);
        if (instances == null) {
            instances = new ArrayList<>();
            typedInstances.put(c, instances);
        }
        instances.add(o);
    }

    public void insert(String id, Object o) {
        namedInstances.put(id, o);
        insert(o);
    }

    public <T> T get(String id, Class<T> clazz) {
        final Object o = namedInstances.get(id);
        if (o != null && clazz.isAssignableFrom(o.getClass())) {
            return (T) o;
        }
        return null;
    }

    public <T> List<T> get(Class<T> clazz) {
        final List<T> instances = (List<T>) typedInstances.get(clazz);
        return instances == null ? Collections.<T>emptyList() : instances;
    }

    @Override
    public String toString() {
        return "SimpleInstanceRegistry{" + "namedInstances=" + namedInstances + ", typedInstances=" + typedInstances
                + '}';
    }
}