1   /*
2    * SPDX-FileCopyrightText: none
3    * SPDX-License-Identifier: CC0-1.0
4    */
5   
6   package gov.nist.secauto.metaschema.core.model;
7   
8   import java.util.Collection;
9   import java.util.function.Predicate;
10  
11  import javax.xml.namespace.QName;
12  
13  import edu.umd.cs.findbugs.annotations.NonNull;
14  import edu.umd.cs.findbugs.annotations.Nullable;
15  
16  public interface IModelDefinition extends IDefinition, IContainer {
17    /**
18     * Tests if the provided definition represents complex data. The data is complex
19     * if one of the following is true:
20     * <ul>
21     * <li>The instance is a {@link IAssemblyDefinition}.</li>
22     * <li>The instance is a {@link IFieldDefinition} that has flags.</li>
23     * </ul>
24     *
25     * This method can be used as a {@link Predicate}.
26     *
27     * @param definition
28     *          the definition to test
29     * @return {@code true} if the data is complex, or {@code false} otherwise
30     */
31    static boolean complexObjectFilter(IModelDefinition definition) {
32      boolean retval = true;
33      if (definition instanceof IFieldDefinition) {
34        IFieldDefinition field = (IFieldDefinition) definition;
35        retval = !field.getFlagInstances().isEmpty();
36      }
37      return retval;
38    }
39  
40    @Override
41    default boolean hasChildren() {
42      return !getFlagInstances().isEmpty();
43    }
44  
45    /**
46     * Retrieves a flag instance, by the flag's effective name, that is defined on
47     * the containing definition.
48     *
49     * @param name
50     *          the flag's name
51     * @return the matching flag instance, or {@code null} if there is no flag
52     *         matching the specified name
53     */
54    @Nullable
55    IFlagInstance getFlagInstanceByName(@NonNull QName name);
56  
57    /**
58     * Retrieves the flag instances for all flags defined on the containing
59     * definition.
60     *
61     * @return the flags
62     */
63    @NonNull
64    Collection<? extends IFlagInstance> getFlagInstances();
65  
66    /**
67     * Retrieves the flag instance to use as as the property name for the containing
68     * object in JSON who's value will be the object containing the flag.
69     *
70     * @return the flag instance if a JSON key is configured, or {@code null}
71     *         otherwise
72     */
73    // TODO: remove once moved to the instance side
74    @Nullable
75    IFlagInstance getJsonKey();
76  }