org.sonatype.siesta.jackson2.ObjectMapperProvider.java Source code

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Here is the source code for org.sonatype.siesta.jackson2.ObjectMapperProvider.java

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/*
 * Copyright (c) 2007-2014 Sonatype, Inc. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.sonatype.siesta.jackson2;

import javax.inject.Named;
import javax.inject.Provider;
import javax.inject.Singleton;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Jackson {@link ObjectMapper} (guice) provider for use with Siesta.
 *
 * @since 2.0
 */
@Named("siesta")
@Singleton
public class ObjectMapperProvider implements Provider<ObjectMapper> {
    private final Logger log = LoggerFactory.getLogger(getClass());

    private ObjectMapper mapper;

    private ObjectMapper create() {
        ObjectMapper mapper = new ObjectMapper();

        // Pretty print output
        mapper.enable(SerializationFeature.INDENT_OUTPUT);

        // Write dates as ISO-8601
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);

        // Ignore unknown properties
        mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

        return mapper;
    }

    @Override
    public ObjectMapper get() {
        if (mapper == null) {
            mapper = create();
            log.debug("Mapper: {}", mapper);
        }
        return mapper;
    }
}