org.grouchotools.jsrules.util.JsonBean.java Source code

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Here is the source code for org.grouchotools.jsrules.util.JsonBean.java

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/*
 * The MIT License
 *
 * Copyright 2015 Paul.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.grouchotools.jsrules.util;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * Extend this class for a json-backed bean -- works well for comparing simple
 * POJOs
 * 
 * @author Paul
 */
public abstract class JsonBean {
    @Override
    public boolean equals(Object that) {
        return that.hashCode() == this.hashCode() && that.getClass() == this.getClass();
    }

    @Override
    public int hashCode() {
        return toString().hashCode();
    }

    @Override
    public String toString() {
        ObjectMapper mapper = new ObjectMapper();

        String json;

        try {
            json = mapper.writeValueAsString(this);
        } catch (JsonProcessingException ex) {
            json = "";
        }

        return json;
    }
}