Example usage for com.google.gson JsonNull INSTANCE

Introduction

In this page you can find the example usage for com.google.gson JsonNull INSTANCE.

Prototype

JsonNull INSTANCE

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Document

singleton for JsonNull

Usage

From source file:org.fenixedu.cms.ui.AdminPostsService.java

License:Open Source License

public JsonObject serializePost(Post post) {
    JsonObject postJson = new JsonObject();
    JsonArray categoriesJson = new JsonArray();
    JsonArray filesJson = new JsonArray();
    if (canDoThis(post.getSite(), Permission.LIST_CATEGORIES, Permission.EDIT_CATEGORY)) {
        boolean canUsePrivileged = canDoThis(post.getSite(), Permission.USE_PRIVILEGED_CATEGORY);
        post.getSite().getCategoriesSet().stream().filter(cat -> canUsePrivileged || !cat.getPrivileged())
                .sorted(Category.CATEGORY_NAME_COMPARATOR).map(category -> serializeCategory(category, post))
                .forEach(categoriesJson::add);
    }//from  w ww . j a va2s.  c o m
    post.getFilesSorted().stream().map(this::serializePostFile).forEach(filesJson::add);
    postJson.addProperty("slug", post.getSlug());
    postJson.add("name", ofNullable(post.getName()).map(LocalizedString::json).orElseGet(JsonObject::new));
    postJson.add("body", ofNullable(post.getBody()).map(LocalizedString::json).orElseGet(JsonObject::new));
    postJson.add("excerpt",
            ofNullable(post.getExcerpt()).map(LocalizedString::json).orElseGet(JsonObject::new));

    if (PermissionEvaluation.canDoThis(post.getSite(), Permission.SEE_METADATA)) {
        postJson.add("metadata",
                ofNullable(post.getMetadata()).map(PostMetadata::json).orElseGet(JsonObject::new));
    } else {
        postJson.add("metadata", JsonNull.INSTANCE);
    }
    postJson.add("categories", categoriesJson);
    postJson.add("files", filesJson);
    postJson.addProperty("address", post.getAddress());

    if (canPublish(post)) {
        postJson.addProperty("active", post.getActive());
        postJson.addProperty("canViewGroup", post.getCanViewGroup().getExpression());
        postJson.add("createdBy", UserResource.getBuilder().view(post.getCreatedBy()));
        postJson.addProperty("publicationBegin",
                ofNullable(post.getPublicationBegin()).map(DateTime::toString).orElse(null));
        postJson.addProperty("publicationEnd",
                ofNullable(post.getPublicationEnd()).map(DateTime::toString).orElse(null));
    }

    return postJson;
}

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From source file:org.hibernate.search.backend.elasticsearch.gson.impl.ArrayElementJsonAccessor.java

License:LGPL

private static void fillTo(JsonArray array, int index) {
    for (int i = array.size(); i <= index; ++i) {
        array.add(JsonNull.INSTANCE);
    }/*  ww  w  .jav a  2s .c om*/
}

---

From source file:org.hibernate.search.backend.elasticsearch.impl.ElasticsearchIndexWorkVisitor.java

License:LGPL

private JsonObject getOrCreateDocumentTree(JsonObject source, String path) {
    if (path == null) {
        return source;
    }//from  w  w w  . ja  va2s.  c  om

    // embedded property Create JSON hierarchy as needed
    String[] parts = DOT.split(path);
    JsonObject parent = source;

    for (int i = 0; i < parts.length; i++) {
        Matcher nameAndIndex = NAME_AND_INDEX.matcher(parts[i]);
        nameAndIndex.matches();

        String name = nameAndIndex.group(1);
        String idx = nameAndIndex.group(3);
        Integer index = null;

        if (idx != null) {
            index = Integer.valueOf(idx);
            JsonArray array = parent.getAsJsonArray(name);
            if (array == null) {
                array = new JsonArray();
                parent.add(name, array);
            }

            JsonObject newParent = index < array.size() ? array.get(index).getAsJsonObject() : null;
            if (newParent == null) {
                newParent = new JsonObject();

                if (index >= array.size()) {
                    for (int j = array.size(); j <= index; j++) {
                        array.add(JsonNull.INSTANCE);
                    }
                }
                array.set(index, newParent);
            }

            parent = newParent;
        } else {
            JsonObject newParent = parent.getAsJsonObject(name);
            if (newParent == null) {
                newParent = new JsonObject();
                parent.add(name, newParent);
            }
            parent = newParent;
        }
    }

    return parent;
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.GeoPointFieldCodec.java

License:LGPL

@Override
public JsonElement encode(GeoPoint value) {
    if (value == null) {
        return JsonNull.INSTANCE;
    }/* w ww  .ja  v a  2s.c  om*/
    JsonObject result = new JsonObject();
    LATITUDE_ACCESSOR.set(result, value.getLatitude());
    LONGITUDE_ACCESSOR.set(result, value.getLongitude());
    return result;
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.IntegerFieldCodec.java

License:LGPL

@Override
public JsonElement encode(Integer value) {
    if (value == null) {
        return JsonNull.INSTANCE;
    }/*from  w  ww . j a va2s  .c o m*/
    return new JsonPrimitive(value);
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.JsonStringFieldCodec.java

License:LGPL

@Override
public JsonElement encode(String value) {
    if (value == null) {
        return JsonNull.INSTANCE;
    }//from   w w w.j ava 2 s .  c  o  m
    return gson.fromJson(value, JsonElement.class);
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.LocalDateFieldCodec.java

License:LGPL

@Override
public JsonElement encode(LocalDate value) {
    if (value == null) {
        return JsonNull.INSTANCE;
    }/* w ww. jav a2 s.  c  o  m*/
    return new JsonPrimitive(delegate.format(value));
}

---

From source file:org.hibernate.search.backend.elasticsearch.types.codec.impl.StringFieldCodec.java

License:LGPL

@Override
public JsonElement encode(String value) {
    if (value == null) {
        return JsonNull.INSTANCE;
    }//from  w  w w.  j  a  v  a2s . c  o  m
    return new JsonPrimitive(value);
}

---

From source file:org.jboss.weld.logging.Json.java

License:Apache License

static JsonElement wrapPrimitive(Object value) {
    if (value == null) {
        return JsonNull.INSTANCE;
    }//ww  w . j  av  a2  s .c  o m
    if (value instanceof Number) {
        return new JsonPrimitive((Number) value);
    }
    if (value instanceof Boolean) {
        return new JsonPrimitive((Boolean) value);
    }
    return new JsonPrimitive(value.toString());
}

---

From source file:org.jboss.weld.logging.LogMessageIndexDiff.java

License:Apache License

/**
 * Generates the JSON diff for the specified index files.
 *
 * @param indexFiles//ww w .  j  a va  2  s.co m
 * @param outputFile
 * @param detectCollisionsOnly
 * @return
 */
public JsonObject generate(List<File> indexFiles, boolean detectCollisionsOnly) {

    if (indexFiles.size() < 2) {
        throw new IllegalStateException("More than one index file must be specified: " + indexFiles);
    }

    // First parse the index files
    List<JsonObject> indexes = parseIndexFiles(indexFiles);

    // Build indexes metadata and check compared versions
    JsonArray indexesMeta = new JsonArray();
    List<String> indexesIds = new ArrayList<String>();
    Set<JsonElement> versions = new HashSet<JsonElement>();
    for (Iterator<JsonObject> iterator = indexes.iterator(); iterator.hasNext();) {
        JsonObject index = iterator.next();
        JsonElement version = index.get(VERSION);
        versions.add(version);
        String indexId = version.getAsString() + index.get(ARTIFACT).getAsString();
        if (indexesIds.contains(indexId)) {
            throw new IllegalStateException(
                    "Unable to compare index files with the same composite identifier (version and artifact id): "
                            + indexId);
        }
        indexesIds.add(indexId);
        JsonObject indexMeta = new JsonObject();
        indexMeta.add(VERSION, version);
        indexMeta.add(ARTIFACT, index.get(ARTIFACT));
        indexMeta.add(TOTAL, index.get(TOTAL));
        indexMeta.add(FILE_PATH, index.get(FILE_PATH));
        indexesMeta.add(indexMeta);
    }

    // Now let's find the differences
    // Note that messages don't need to have the ID specified (0) or may inherit the ID from another message with the same name (-1)
    JsonArray differences = findDifferences(versions.size(), detectCollisionsOnly, buildDataMap(indexes));

    JsonObject diff = new JsonObject();
    diff.add(INDEXES, indexesMeta);
    diff.add(DETECT_COLLISIONS_ONLY, Json.wrapPrimitive(detectCollisionsOnly));
    diff.add(TOTAL, Json.wrapPrimitive(differences.size()));
    diff.add(DIFFERENCES, differences.size() > 0 ? differences : JsonNull.INSTANCE);
    return diff;
}

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