io.devbench.uibuilder.spring.singleton.SpringSingletonProvider Maven / Gradle / Ivy

Go to download
/*
 *
 * Copyright © 2018 Webvalto Ltd.
 *
 * 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 io.devbench.uibuilder.spring.singleton;

import io.devbench.uibuilder.api.singleton.SingletonProvider;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Optional;


@Service
public class SpringSingletonProvider implements SingletonProvider {

    @Autowired
    private SingletonContext singletonContext;

    @Override
    @SuppressWarnings("unchecked")
    public  Optional getInstance(Class instanceClass) {
        return Optional.ofNullable((T) singletonContext.getSingletonStore().get(instanceClass));
    }

    @Override
    public int priority() {
        return 1;
    }

}