Method: ContextBuildingObjectPropertyValueSerializer(ObjectGraphTraverser)

1: /*
2: * JB4JSON-LD
3: * Copyright (C) 2024 Czech Technical University in Prague
4: *
5: * This library is free software; you can redistribute it and/or
6: * modify it under the terms of the GNU Lesser General Public
7: * License as published by the Free Software Foundation; either
8: * version 3.0 of the License, or (at your option) any later version.
9: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library.
17: */
18: package cz.cvut.kbss.jsonld.serialization.serializer.context;
19:
20: import cz.cvut.kbss.jsonld.ConfigParam;
21: import cz.cvut.kbss.jsonld.Configuration;
22: import cz.cvut.kbss.jsonld.JsonLd;
23: import cz.cvut.kbss.jsonld.common.BeanClassProcessor;
24: import cz.cvut.kbss.jsonld.serialization.model.JsonNode;
25: import cz.cvut.kbss.jsonld.serialization.serializer.SerializerUtils;
26: import cz.cvut.kbss.jsonld.serialization.serializer.compact.ObjectPropertyValueSerializer;
27: import cz.cvut.kbss.jsonld.serialization.traversal.ObjectGraphTraverser;
28: import cz.cvut.kbss.jsonld.serialization.traversal.SerializationContext;
29:
30: import java.util.Collection;
31:
32: public class ContextBuildingObjectPropertyValueSerializer extends ObjectPropertyValueSerializer {
33:
34: private boolean serializeUsingExtendedDefinition;
35:
36: public ContextBuildingObjectPropertyValueSerializer(ObjectGraphTraverser graphTraverser) {
37: super(graphTraverser);
38: }
39:
40: @Override
41: public JsonNode serialize(Object value, SerializationContext ctx) {
42: if (ctx.getTerm() != null) {
43: registerTermDefinition(ctx);
44: }
45: return super.serialize(value, ctx);
46: }
47:
48: private void registerTermDefinition(SerializationContext<?> ctx) {
49: if (serializeUsingExtendedDefinition && isIndividual(ctx)) {
50: ctx.registerTermMapping(ctx.getFieldName(),
51: SerializerUtils.createTypedTermDefinition(ctx.getFieldName(), ctx.getTerm(),
52: JsonLd.ID));
53: } else {
54: ctx.registerTermMapping(ctx.getFieldName(), ctx.getTerm());
55: }
56: }
57:
58: private static boolean isIndividual(SerializationContext<?> ctx) {
59: if (BeanClassProcessor.isIndividualType(ctx.getValue().getClass())) {
60: return true;
61: }
62: if (ctx.getValue() instanceof Collection) {
63: final Collection<?> c = (Collection<?>) ctx.getValue();
64: for (Object elem : c) {
65: if (elem != null) {
66: return BeanClassProcessor.isIndividualType(elem.getClass());
67: }
68: }
69: }
70: return false;
71: }
72:
73: @Override
74: public void configure(Configuration config) {
75: this.serializeUsingExtendedDefinition = config.is(ConfigParam.SERIALIZE_INDIVIDUALS_USING_EXPANDED_DEFINITION);
76: }
77: }