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The basic domain classes for 'media', the core of POMS. Also, the 'update' XML bindings for it. It also contains some closely related domain classes like the enum to contain NICAM kijkwijzer settings.

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/*
 * Copyright (C) 2014 Licensed under the Apache License, Version 2.0
 * VPRO The Netherlands
 */
package nl.vpro.domain.media;

import java.util.AbstractList;
import java.util.Collection;
import java.util.List;
import java.util.Optional;

/**
 * @author Roelof Jan Koekoek
 * @since 3.3
 */
public class MemberRefs {

    private MemberRefs() {
    }

    public static List listOwners(final List memberRefs) {
        return new AbstractList<>() {
            @Override
            public MediaObject get(int index) {
                return memberRefs.get(index).getGroup();
            }

            @Override
            public int size() {
                return memberRefs.size();
            }
        };
    }


    public static List listMembers(final List memberRefs) {
        return new AbstractList<>() {
            @Override
            public MediaObject get(int index) {
                return memberRefs.get(index).getMember();
            }

            @Override
            public int size() {
                return memberRefs.size();
            }
        };
    }


    /**
     * @since 5.7
     */
    public static Optional findRef(Collection collection, MediaObject owner) {
         if(collection == null) {
            return Optional.empty();
        }

        for(MemberRef memberRef : collection) {
            if (memberRef.getMidRef() != null && memberRef.getMidRef().equals(owner.getMid())) {
                return Optional.of(memberRef);
            }
            if(memberRef.getGroup().equals(owner)) {
                return Optional.of(memberRef);
            }
        }
        return Optional.empty();
    }

     /**
     * @since 5.7
     */
    public static Optional findRef(Collection collection, MediaObject owner, Integer number) {
        if (number == null) {
            return findRef(collection, owner);
        }
        for (MemberRef memberRef : collection) {
            if (memberRef.getNumber() != null && memberRef.getNumber().equals(number)) {
                if (memberRef.getMidRef() != null && memberRef.getMidRef().equals(owner.getMid())) {
                    return Optional.of(memberRef);
                }
                if (memberRef.getGroup().equals(owner)) {
                    return Optional.of(memberRef);
                }
            }
        }
        return Optional.empty();
    }

    /**
     * @since 5.7
     */
    public static boolean isOf(Collection collection, MediaObject owner) {
        return findRef(collection, owner).isPresent();
    }

     /**
     * @since 5.7
     */
    public static boolean isOf(Collection collection, MediaObject owner, Integer number) {
        return findRef(collection, owner, number).isPresent();
    }
}