com.b2international.snowowl.snomed.datastore.internal.id.reservations.ReservationRangeImpl.java Source code

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Here is the source code for com.b2international.snowowl.snomed.datastore.internal.id.reservations.ReservationRangeImpl.java

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/*
 * Copyright 2011-2018 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.internal.id.reservations;

import static com.google.common.base.Preconditions.checkArgument;

import java.util.Collection;
import java.util.Set;
import java.util.stream.Collectors;

import com.b2international.snowowl.core.terminology.ComponentCategory;
import com.b2international.snowowl.snomed.datastore.id.SnomedIdentifier;
import com.b2international.snowowl.snomed.datastore.id.reservations.Reservation;
import com.google.common.base.Objects;
import com.google.common.base.Strings;
import com.google.common.collect.Range;

/**
 * @since 4.0
 */
public class ReservationRangeImpl implements Reservation {

    private Range<Long> itemIdRange;
    private String namespace;
    private Collection<ComponentCategory> components;

    public ReservationRangeImpl(long itemIdMin, long itemIdMax, String namespace,
            Collection<ComponentCategory> components) {
        checkArgument(components.size() >= 1, "At least one ComponentNature must be defined");
        final int minItemIdMin = Strings.isNullOrEmpty(namespace) ? 100 : 1;
        checkArgument(itemIdMin >= minItemIdMin, "ItemIdMin should be greater than or equal to %s", minItemIdMin);
        checkArgument(itemIdMax >= itemIdMin, "ItemIdMax should be greater than or equal to ItemIdMin");
        this.itemIdRange = Range.closed(itemIdMin, itemIdMax);
        this.namespace = Strings.nullToEmpty(namespace);
        this.components = components;
    }

    private long getItemIdMin() {
        return itemIdRange.lowerEndpoint();
    }

    private long getItemIdMax() {
        return itemIdRange.upperEndpoint();
    }

    private String getNamespace() {
        return namespace;
    }

    private Collection<ComponentCategory> getComponents() {
        return components;
    }

    public boolean affects(String namespace, ComponentCategory category) {
        return Objects.equal(namespace, getNamespace()) && getComponents().contains(category);
    }

    public Range<Long> getItemIdRange() {
        return itemIdRange;
    }

    @Override
    public Set<SnomedIdentifier> intersection(Set<SnomedIdentifier> identifiers) {
        return identifiers.stream()
                .filter(identifier -> affects(identifier.getNamespace(), identifier.getComponentCategory()))
                .filter(identifier -> itemIdRange.contains(identifier.getItemId())).collect(Collectors.toSet());
    }

    @Override
    public String toString() {
        return String.format("Reservation[%s-%s, namespace=%s, components=%s]", getItemIdMin(), getItemIdMax(),
                getNamespace(), getComponents());
    }

}