uk.co.sdev.undertow.rx.rest.JacksonCompletionHandler.java Source code

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Here is the source code for uk.co.sdev.undertow.rx.rest.JacksonCompletionHandler.java

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/**
 * Copyright 2014 Andy Godwin
 *
 * 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 uk.co.sdev.undertow.rx.rest;

import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import rx.Subscriber;

import java.util.Optional;

public class JacksonCompletionHandler<T> extends CompletionHandler<T> {

    public JacksonCompletionHandler(ObjectMapper mapper, JavaType type,
            Subscriber<? super Optional<T>> subscriber) {
        super(subscriber, body -> {
            try {
                return Optional.ofNullable(mapper.readValue(body, type));
            } catch (Exception e) {
                return Optional.<T>empty();
            }
        });
    }
}