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JsonPropertyAccessResolver.java
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JsonPropertyAccessResolver.java
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/**
* Copyright (C) 2022 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jsonld.jackson.common;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import cz.cvut.kbss.jsonld.common.BeanAnnotationProcessor;
import cz.cvut.kbss.jsonld.common.JsonLdPropertyAccessResolver;
import java.lang.reflect.Field;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static cz.cvut.kbss.jsonld.common.BeanAnnotationProcessor.isInstanceIdentifier;
import static cz.cvut.kbss.jsonld.common.BeanAnnotationProcessor.isTypesField;
public class JsonPropertyAccessResolver extends JsonLdPropertyAccessResolver {
// Remember fields ignored via JsonIgnoreProperties
private final Map<Class<?>, Set<Field>> ignoredFields = new ConcurrentHashMap<>();
@Override
public boolean isReadable(Field field) {
Objects.requireNonNull(field);
final JsonProperty jsonProperty = field.getAnnotation(JsonProperty.class);
final JsonIgnore jsonIgnore = field.getAnnotation(JsonIgnore.class);
return jsonIgnore == null && (jsonProperty == null || jsonProperty.access() != JsonProperty.Access.WRITE_ONLY ||
isInstanceIdentifier(field) || isTypesField(field)) && !isJsonIgnoredPropertiesField(field) && super.isReadable(field);
}
private boolean isJsonIgnoredPropertiesField(Field field) {
final Class<?> cls = field.getDeclaringClass();
if (!ignoredFields.containsKey(cls)) {
final JsonIgnoreProperties ann = cls.getAnnotation(JsonIgnoreProperties.class);
if (ann == null) {
ignoredFields.put(cls, Collections.emptySet());
} else {
final List<Class<?>> classes = BeanAnnotationProcessor.getAncestors(cls);
final Map<String, Field> fieldMap = new HashMap<>();
classes.stream().map(Class::getDeclaredFields).flatMap(Stream::of)
.forEach(f -> fieldMap.put(f.getName(), f));
ignoredFields.put(cls, Stream.of(ann.value()).filter(fieldMap::containsKey).map(fieldMap::get)
.collect(Collectors.toSet()));
}
}
return ignoredFields.get(cls).contains(field);
}
@Override
public boolean isWriteable(Field field) {
Objects.requireNonNull(field);
final JsonProperty jsonProperty = field.getAnnotation(JsonProperty.class);
final JsonIgnore jsonIgnore = field.getAnnotation(JsonIgnore.class);
return jsonIgnore == null && (jsonProperty == null || jsonProperty.access() != JsonProperty.Access.READ_ONLY) &&
!isJsonIgnoredPropertiesField(field) && super.isWriteable(field);
}
}