/*
 * Copyright 2018, TeamDev. All rights reserved.
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package io.spine.server.entity;

import com.google.protobuf.Message;
import io.spine.server.entity.storage.Column;
import io.spine.server.entity.storage.EntityRecordWithColumns;

import java.util.function.Predicate;

/**
 * An entity which has {@linkplain LifecycleFlags lifecycle flags}.
 *
 * <p>Lifecycle flags determine if an entity is active.
 * An entity is considered to be active if the lifecycle flags are missing.
 * If an entity is {@linkplain #isArchived() archived} or {@linkplain #isDeleted() deleted}, 
 * then its regarded to be inactive.
 *
 * @author Alexander Yevsyukov
 */
public interface EntityWithLifecycle<I, S extends Message> extends Entity<I, S> {

    /**
     * Obtains the current lifecycle flags.
     */
    LifecycleFlags getLifecycleFlags();

    /**
     * Shows if current instance is archived or not.
     */
    @Column
    boolean isArchived();

    /**
     * Shows if current instance is deleted or not.
     */
    @Column
    boolean isDeleted();

    /**
     * Tells whether lifecycle flags of the entity changed since its initialization.
     */
    boolean lifecycleFlagsChanged();

    /**
     * Collection of predicates for filtering entities with lifecycle flags.
     */
    class Predicates {

        private static final Predicate<LifecycleFlags> isEntityActive =
                input -> input == null ||
                        !(input.getArchived() || input.getDeleted());

        private static final Predicate<EntityRecord> isRecordActive =
                input -> {
                    if (input == null) {
                        return true;
                    }
                    LifecycleFlags flags = input.getLifecycleFlags();
                    boolean result = isEntityActive.test(flags);
                    return result;
                };

        private static final Predicate<EntityRecordWithColumns> isRecordWithColumnsActive =
                input -> {
                    if (input == null) {
                        return false;
                    }
                    EntityRecord record = input.getRecord();
                    return isRecordActive().test(record);
                };

        private Predicates() {
            // Prevent instantiation of this utility class.
        }

        /**
         * Obtains the predicate for checking if an entity has
         * any of the {@link LifecycleFlags} set.
         *
         * <p>If so, an entity becomes inactive to load methods of a repository.
         * Entities with flags set must be treated by special {@linkplain RepositoryView views}
         * of a repository.
         *
         * @return the filter predicate
         * @see LifecycleFlags
         */
        public static Predicate<LifecycleFlags> isEntityActive() {
            return isEntityActive;
        }

        /**
         * Obtains the predicate for checking if an entity record has any
         * of the {@link LifecycleFlags} set.
         *
         * @return the predicate that filters inactive {@link EntityRecord}s
         * @see EntityRecord#getLifecycleFlags()
         */
        public static Predicate<EntityRecord> isRecordActive() {
            return isRecordActive;
        }

        /**
         * Obtains the predicate for checking if an {@link EntityRecordWithColumns entity record
         * with columns} has any of the {@link LifecycleFlags} set.
         *
         * @return the predicate that filters inactive {@link EntityRecordWithColumns}s
         * @see EntityRecord#getLifecycleFlags()
         */
        public static Predicate<EntityRecordWithColumns> isRecordWithColumnsActive() {
            return isRecordWithColumnsActive;
        }
    }
}

@@ -1534,16 +1534,17 @@
  then it
+%E2%80%99
 s regard

Fix typo in EntityWithLifecycle docs.