org.fusesource.restygwt.server.complex.DTOTypeResolver.java Source code

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Here is the source code for org.fusesource.restygwt.server.complex.DTOTypeResolver.java

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/**
 * Copyright (C) 2009-2012 the original author or authors.
 * See the notice.md file distributed with this work for additional
 * information regarding copyright ownership.
 *
 * 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.fusesource.restygwt.server.complex;

import org.fusesource.restygwt.client.complex.JsonTypeIdResolver.DTO1;
import org.fusesource.restygwt.client.complex.JsonTypeIdResolver.DTO2;
import org.fusesource.restygwt.client.complex.JsonTypeIdResolver.DTOCustom1;
import org.fusesource.restygwt.client.complex.JsonTypeIdResolver.DTOCustom2;

import com.fasterxml.jackson.annotation.JsonTypeInfo.Id;
import com.fasterxml.jackson.databind.DatabindContext;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.jsontype.TypeIdResolver;
import com.fasterxml.jackson.databind.type.SimpleType;

public class DTOTypeResolver implements TypeIdResolver {
    @Override
    public void init(JavaType baseType) {
    }

    @Override
    public String idFromValueAndType(Object value, Class<?> suggestedType) {
        return idFromValue(value);
    }

    @Override
    public String idFromValue(Object value) {
        if (value instanceof DTO1)
            return "dto1";
        else if (value instanceof DTO2)
            return "dto2";
        else if (value instanceof DTOCustom1)
            return "dtocustom1";
        else if (value instanceof DTOCustom2)
            return "dtocustom2";
        else
            throw new IllegalArgumentException("Unknown type: " + value);
    }

    @Override
    public String idFromBaseType() {
        throw new AssertionError();
    }

    @Override
    public JavaType typeFromId(String id) {
        if ("dto1".equals(id))
            return SimpleType.construct(DTO1.class);
        else if ("dto2".equals(id))
            return SimpleType.construct(DTO2.class);
        else if ("dtocustom1".equals(id))
            return SimpleType.construct(DTOCustom1.class);
        else if ("dtocustom2".equals(id))
            return SimpleType.construct(DTOCustom2.class);
        else
            throw new IllegalArgumentException("Unknown id: " + id);
    }

    @Override
    public Id getMechanism() {
        return Id.NAME;
    }

    @Override
    public JavaType typeFromId(DatabindContext context, String id) {
        return typeFromId(id);
    }
}