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LiteralValueSerializers.java
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LiteralValueSerializers.java
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/**
* Copyright (C) 2022 Czech Technical University in Prague
* <p>
* 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.
* <p>
* 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.serialization.serializer;
import cz.cvut.kbss.jsonld.Configuration;
import cz.cvut.kbss.jsonld.serialization.JsonLdSerializer;
import cz.cvut.kbss.jsonld.serialization.traversal.SerializationContext;
import java.util.*;
/**
* Manages serializers of non-object property values for a single {@link JsonLdSerializer} instance.
* <p>
* That is, if an object is not referenced by an object property mapped attribute, it will be serialized by a serializer
* managed by this instance.
*/
public class LiteralValueSerializers implements ValueSerializers {
private final Map<Class<?>, ValueSerializer<?>> serializers = new HashMap<>();
private final ValueSerializer<?> defaultSerializer;
private ValueSerializer<String> identifierSerializer;
private ValueSerializer<Set<String>> typesSerializer;
public LiteralValueSerializers(ValueSerializer<?> defaultSerializer) {
this.defaultSerializer = Objects.requireNonNull(defaultSerializer);
}
@Override
public <T> boolean hasCustomSerializer(Class<T> type) {
return serializers.containsKey(type);
}
@Override
public <T> Optional<ValueSerializer<T>> getSerializer(SerializationContext<T> ctx) {
return Optional.ofNullable((ValueSerializer<T>) serializers.get(ctx.getValue().getClass()));
}
@Override
public <T> ValueSerializer<T> getOrDefault(SerializationContext<T> ctx) {
return (ValueSerializer<T>) serializers.getOrDefault(ctx.getValue().getClass(), defaultSerializer);
}
@Override
public <T> void registerSerializer(Class<T> forType, ValueSerializer<? super T> serializer) {
Objects.requireNonNull(forType);
Objects.requireNonNull(serializer);
serializers.put(forType, serializer);
}
@Override
public ValueSerializer<String> getIdentifierSerializer() {
return identifierSerializer;
}
@Override
public void registerIdentifierSerializer(ValueSerializer<String> idSerializer) {
this.identifierSerializer = Objects.requireNonNull(idSerializer);
}
@Override
public ValueSerializer<Set<String>> getTypesSerializer() {
return typesSerializer;
}
@Override
public void registerTypesSerializer(ValueSerializer<Set<String>> typesSerializer) {
this.typesSerializer = Objects.requireNonNull(typesSerializer);
}
@Override
public void configure(Configuration configuration) {
serializers.values().forEach(vs -> vs.configure(configuration));
}
}