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MapperFinder.java
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MapperFinder.java
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/*
* Copyright (c) 2015-2018 Intel Corporation
*
* 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 com.intel.podm.mappers;
import com.intel.podm.business.entities.redfish.base.DiscoverableEntity;
import com.intel.podm.client.resources.ExternalServiceResource;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import java.util.Collection;
import java.util.Optional;
import java.util.stream.StreamSupport;
import static java.util.stream.Collectors.toList;
import static java.util.stream.StreamSupport.stream;
@Dependent
public class MapperFinder {
@Inject
private Instance<EntityMapper<? extends ExternalServiceResource, ? extends DiscoverableEntity>> mapperPool;
private Collection<EntityMapper<? extends ExternalServiceResource, ? extends DiscoverableEntity>> cache;
public Optional<EntityMapper<? extends ExternalServiceResource, ? extends DiscoverableEntity>> find(ExternalServiceResource resource) {
return StreamSupport.stream(getMapperPool().spliterator(), false)
.filter(mapper -> mapper.canMap(resource))
.findFirst();
}
private Iterable<EntityMapper<? extends ExternalServiceResource, ? extends DiscoverableEntity>> getMapperPool() {
if (cache == null) {
cache = stream(mapperPool.spliterator(), false).collect(toList());
}
return cache;
}
}