com.b2international.snowowl.snomed.datastore.converter.MembersExpander.java Source code

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Here is the source code for com.b2international.snowowl.snomed.datastore.converter.MembersExpander.java

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/*
 * Copyright 2011-2017 B2i Healthcare Pte Ltd, http://b2i.sg
 * 
 * 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.b2international.snowowl.snomed.datastore.converter;

import java.util.Collection;
import java.util.List;
import java.util.Set;

import com.b2international.commons.http.ExtendedLocale;
import com.b2international.commons.options.Options;
import com.b2international.snowowl.core.domain.BranchContext;
import com.b2international.snowowl.snomed.core.domain.SnomedCoreComponent;
import com.b2international.snowowl.snomed.core.domain.refset.SnomedReferenceSetMember;
import com.b2international.snowowl.snomed.core.domain.refset.SnomedReferenceSetMembers;
import com.b2international.snowowl.snomed.datastore.request.SnomedRequests;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Multimap;
import com.google.common.collect.Multimaps;

/**
 * @since 4.6
 */
class MembersExpander {

    private final BranchContext context;
    private final Options expand;
    private final List<ExtendedLocale> locales;

    public MembersExpander(BranchContext context, Options expand, List<ExtendedLocale> locales) {
        this.context = context;
        this.expand = expand;
        this.locales = locales;
    }

    void expand(List<? extends SnomedCoreComponent> results, Set<String> componentIds) {
        if (expand.containsKey("members")) {
            final Options membersOptions = expand.get("members", Options.class);
            // TODO support limit, offset, filtering, selection
            final SnomedReferenceSetMembers matchingMembers = SnomedRequests.prepareSearchMember().all()
                    .filterByReferencedComponent(componentIds).setLocales(locales)
                    .setExpand(membersOptions.get("expand", Options.class)).build().execute(context);
            final Multimap<String, SnomedReferenceSetMember> membersByReferencedComponentId = Multimaps
                    .index(matchingMembers, new Function<SnomedReferenceSetMember, String>() {
                        @Override
                        public String apply(SnomedReferenceSetMember input) {
                            return input.getReferencedComponent().getId();
                        }
                    });
            for (SnomedCoreComponent component : results) {
                final Collection<SnomedReferenceSetMember> members = membersByReferencedComponentId
                        .get(component.getId());
                ((SnomedCoreComponent) component).setMembers(new SnomedReferenceSetMembers(
                        ImmutableList.copyOf(members), null, null, members.size(), members.size()));
            }
        }
    }

}