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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.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 Set<Field> ignoredFields = new HashSet<>();
private final Set<Class<?>> processedClasses = new HashSet<>();
@Override
public boolean isReadable(Field field, Class<?> objectCls) {
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, objectCls) && super.isReadable(field, objectCls);
}
private boolean isJsonIgnoredPropertiesField(Field field, Class<?> objectCls) {
if (!processedClasses.contains(objectCls)) {
synchronized (processedClasses) {
final JsonIgnoreProperties ann = objectCls.getAnnotation(JsonIgnoreProperties.class);
if (ann != null) {
final List<Class<?>> classes = BeanAnnotationProcessor.getAncestors(objectCls);
final Map<String, Field> fieldMap = new HashMap<>();
classes.stream().map(Class::getDeclaredFields).flatMap(Stream::of)
.forEach(f -> fieldMap.put(f.getName(), f));
ignoredFields.addAll(Stream.of(ann.value()).filter(fieldMap::containsKey).map(fieldMap::get)
.collect(Collectors.toSet()));
}
processedClasses.add(objectCls);
}
}
return ignoredFields.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, field.getDeclaringClass()) && super.isWriteable(field);
}
}