package com.fasterxml.jackson.databind.ser.impl;

import java.io.IOException;
import java.lang.reflect.Type;

import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.type.WritableTypeId;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;

@SuppressWarnings("serial")
public class UnknownSerializer
    extends StdSerializer<Object>
{
    public UnknownSerializer() {
        super(Object.class);
    }

    
Since:2.6
/** * @since 2.6 */
public UnknownSerializer(Class<?> cls) { super(cls, false); } @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { // 27-Nov-2009, tatu: As per [JACKSON-201] may or may not fail... if (provider.isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)) { failForEmpty(provider, value); } // But if it's fine, we'll just output empty JSON Object: gen.writeStartObject(value, 0); gen.writeEndObject(); } @Override public final void serializeWithType(Object value, JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer) throws IOException { if (provider.isEnabled(SerializationFeature.FAIL_ON_EMPTY_BEANS)) { failForEmpty(provider, value); } WritableTypeId typeIdDef = typeSer.writeTypePrefix(gen, typeSer.typeId(value, JsonToken.START_OBJECT)); typeSer.writeTypeSuffix(gen, typeIdDef); } @Override public boolean isEmpty(SerializerProvider provider, Object value) { return true; } @Override public JsonNode getSchema(SerializerProvider provider, Type typeHint) throws JsonMappingException { return null; } @Override public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException { visitor.expectAnyFormat(typeHint); } protected void failForEmpty(SerializerProvider prov, Object value) throws JsonMappingException { prov.reportBadDefinition(handledType(), String.format( "No serializer found for class %s and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS)", value.getClass().getName())); } }