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    • org.keycloak.json.StringOrArraySerializer Maven / Gradle / Ivy

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    /*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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.
 */

package org.keycloak.json;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;

public class StringOrArraySerializer extends JsonSerializer {
    @Override
    public void serialize(Object o, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        String[] array = (String[]) o;
        if (array == null) {
            jsonGenerator.writeNull();
        } else if (array.length == 1) {
            jsonGenerator.writeString(array[0]);
        } else {
            jsonGenerator.writeStartArray();
            for (String s : array) {
                jsonGenerator.writeString(s);
            }
            jsonGenerator.writeEndArray();
        }
    }
}
    
    
    
    

    




    
    
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