org.openmrs.pentaho.plugin.reporting.rest.SimpleObject.java Source code

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Here is the source code for org.openmrs.pentaho.plugin.reporting.rest.SimpleObject.java

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/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.pentaho.plugin.reporting.rest;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.LinkedHashMap;

import org.apache.commons.beanutils.PropertyUtils;
import org.codehaus.jackson.JsonParseException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;

/**
 * This is the Map returned for all objects. The properties are just key/value pairs. If an object
 * has subobjects those are just lists of SimpleObjects
 */
public class SimpleObject extends LinkedHashMap<String, Object> {

    private static final long serialVersionUID = 1L;

    public SimpleObject() {
        super();
    }

    /**
     * Puts a property in this map, and returns the map itself (for chained method calls)
     * 
     * @param key
     * @param value
     * @return
     */
    public SimpleObject add(String key, Object value) {
        put(key, value);
        return this;
    }

    public static Object path(Object object, String path) {
        String[] components = path.split("\\.");
        for (String s : components) {
            try {
                object = PropertyUtils.getProperty(object, s);
            } catch (Exception ex) {
                return null;
            }
        }
        return object;
    }

    public Object path(String path) {
        return path(this, path);
    }

    /**
     * Creates an instance from the given json string.
     * 
     * @param json
     * @return the simpleObject
     * @throws JsonParseException
     * @throws JsonMappingException
     * @throws IOException
     */
    public static SimpleObject parseJson(String json) throws JsonParseException, JsonMappingException, IOException {
        ObjectMapper objectMapper = new ObjectMapper();
        SimpleObject object = objectMapper.readValue(json, SimpleObject.class);
        return object;
    }
}