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A more performant JSON-LD 1.1 Processor & API forked from Titanium JSON-LD.
The newest version!
/*
* Copyright 2020 APICATALOG and HASMAC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
*/
package no.hasmac.jsonld.json;
import jakarta.json.JsonArray;
import jakarta.json.JsonArrayBuilder;
import jakarta.json.JsonObject;
import jakarta.json.JsonObjectBuilder;
import jakarta.json.JsonValue;
import no.hasmac.jsonld.lang.Keywords;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
public final class JsonMapBuilder {
public static final Set ValueObjectKeywords = Set.of(Keywords.TYPE, Keywords.VALUE, Keywords.DIRECTION, Keywords.LANGUAGE, Keywords.INDEX, Keywords.ANNOTATION);
private final Map map;
private JsonMapBuilder(Map map) {
this.map = map;
}
public JsonObject build() {
final JsonObjectBuilder builder = JsonProvider.instance().createObjectBuilder();
for (final Map.Entry entry : map.entrySet()) {
if (entry.getValue() instanceof JsonValue) {
builder.add(entry.getKey(), (JsonValue)entry.getValue());
} else if (entry.getValue() instanceof JsonArrayBuilder) {
builder.add(entry.getKey(), ((JsonArrayBuilder)entry.getValue()).build());
} else if (entry.getValue() instanceof JsonMapBuilder) {
builder.add(entry.getKey(), ((JsonMapBuilder)entry.getValue()).build());
} else {
throw new IllegalStateException();
}
}
return builder.build();
}
public boolean containsKey(String key) {
return map.containsKey(key);
}
public void put(String key, final JsonValue item) {
map.put(key, item);
}
public int size() {
return map.size();
}
public boolean isEmpty() {
return map.isEmpty();
}
public static JsonMapBuilder create(JsonObject object) {
return new JsonMapBuilder(new LinkedHashMap<>(object));
}
public static JsonMapBuilder create(Map object) {
return new JsonMapBuilder(new LinkedHashMap<>(object));
}
public static JsonMapBuilder create() {
return new JsonMapBuilder(new LinkedHashMap<>());
}
public Optional get(String key) {
Object item = map.get(key);
if (item == null) {
return Optional.empty();
}
if (item instanceof JsonValue) {
return Optional.of((JsonValue)item);
} else if (item instanceof JsonArrayBuilder) {
return Optional.of(((JsonArrayBuilder)item).build());
} else if (item instanceof JsonMapBuilder) {
return Optional.of(((JsonMapBuilder)item).build());
}
throw new IllegalStateException();
}
public boolean isNotValueObject() {
return Keywords.notAllMatch(map.keySet(), ValueObjectKeywords);
}
public JsonArray valuesToArray() {
final JsonArrayBuilder array = JsonProvider.instance().createArrayBuilder();
for (final Object item : map.values()) {
if (item instanceof JsonValue) {
array.add((JsonValue)item);
} else if (item instanceof JsonArrayBuilder) {
array.add(((JsonArrayBuilder)item).build());
} else if (item instanceof JsonMapBuilder) {
array.add(((JsonMapBuilder)item).build());
} else {
throw new IllegalStateException();
}
}
return array.build();
}
public void add(String key, JsonValue value) {
add(key, value, true);
}
public void add(String key, JsonValue value, boolean asArray) {
// 1. If as array is true and the value of key in object does not exist or is
// not an array,
// set it to a new array containing any original value.
if (asArray) {
toArray(key);
}
// 2. If value is an array, then for each element v in value, use add value
// recursively to add v to key in entry.
if (JsonUtils.isArray(value)) {
value.asJsonArray().forEach(v -> add(key, v, asArray));
// 3.
} else {
final Object original = map.get(key);
// 3.1
if (original != null) {
if (original instanceof JsonValue) {
if (JsonUtils.isArray((JsonValue)original)) {
map.put(key, JsonProvider.instance().createArrayBuilder(((JsonValue)original).asJsonArray()).add(value));
} else {
map.put(key, JsonProvider.instance().createArrayBuilder().add((JsonValue)original).add(value));
}
} else if (original instanceof JsonArrayBuilder) {
((JsonArrayBuilder)original).add(value);
} else if (original instanceof JsonMapBuilder) {
map.put(key, JsonProvider.instance().createArrayBuilder().add(((JsonMapBuilder)original).build()));
} else {
throw new IllegalStateException();
}
// 3.2
} else {
map.put(key, value);
}
}
}
public void add(String key, JsonObjectBuilder value) {
add(key, value.build());
}
private void toArray(String key) {
if (map.containsKey(key)) {
final Object original = map.get(key);
if (original instanceof JsonValue) {
if (JsonUtils.isArray((JsonValue)original)) {
map.put(key, JsonProvider.instance().createArrayBuilder(((JsonValue)original).asJsonArray()));
} else {
map.put(key, JsonProvider.instance().createArrayBuilder().add((JsonValue)original));
}
return;
} else if (original instanceof JsonArrayBuilder) {
return;
} else if (original instanceof JsonMapBuilder) {
map.put(key, JsonProvider.instance().createArrayBuilder().add(((JsonMapBuilder)original).build()));
return;
}
throw new IllegalStateException();
}
map.put(key, JsonProvider.instance().createArrayBuilder());
}
public void put(String key, JsonMapBuilder value) {
map.put(key, value);
}
public JsonMapBuilder getMapBuilder(final String key) {
final Object value = map.get(key);
if (value != null) {
if (value instanceof JsonMapBuilder) {
return (JsonMapBuilder)value;
}
if (value instanceof JsonValue) {
return JsonMapBuilder.create(((JsonValue)value).asJsonObject());
}
throw new IllegalStateException();
}
final JsonMapBuilder result = JsonMapBuilder.create();
map.put(key, result);
return result;
}
public void remove(String key) {
map.remove(key);
}
@Override
public String toString() {
return map.toString();
}
}