GlobalObjectMappers.java

/*
 * Copyright 2015 MiLaboratory.com
 *
 * 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 com.milaboratory.util;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

import java.io.IOException;

/**
 * Created by dbolotin on 24.01.14.
 */
public class GlobalObjectMappers {
    public static final ObjectMapper ONE_LINE = new ObjectMapper();
    public static final ObjectMapper PRETTY = new ObjectMapper()
            .enable(SerializationFeature.INDENT_OUTPUT)
            .setDefaultPrettyPrinter(new DefaultPrettyPrinter1());

    public static String toOneLine(Object object) throws JsonProcessingException {
        String str = GlobalObjectMappers.ONE_LINE.writeValueAsString(object);

        if (str.contains("\n"))
            throw new RuntimeException("Internal error.");

        return str;
    }

    public static final class DefaultPrettyPrinter1 extends DefaultPrettyPrinter {
        public DefaultPrettyPrinter1() {
        }

        public DefaultPrettyPrinter1(DefaultPrettyPrinter base) {
            super(base);
        }

        @Override
        public void writeObjectFieldValueSeparator(JsonGenerator jg) throws IOException {
            jg.writeRaw(": ");
        }

        @Override
        public DefaultPrettyPrinter createInstance() {
            return new DefaultPrettyPrinter1(this);
        }
    }
}