couchdb.StringToStringMap.java Source code

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Here is the source code for couchdb.StringToStringMap.java

Source

package couchdb;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

import com.yahoo.ycsb.ByteIterator;
import com.yahoo.ycsb.StringByteIterator;

/*
 * Copyright 2013 KU Leuven Research and Development - iMinds - Distrinet
 * 
 * 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.
 * 
 * Administrative Contact: dnet-project-office@cs.kuleuven.be
 * Technical Contact: arnaud.schoonjans@student.kuleuven.be
 */
public class StringToStringMap extends HashMap<String, String> {

    private static final long serialVersionUID = 1L;

    public StringToStringMap() {
        super();
    }

    /*
     * After calling this constructor, the ByteIterator values of otherMap won't
     * be useful anymore!!!
     */
    public StringToStringMap(Map<String, ByteIterator> otherMap) {
        super();
        for (String key : otherMap.keySet()) {
            String value = otherMap.get(key).toString();
            super.put(key, value);
        }
    }

    /* 
     * Extracts only the string values from the json string. Assumes the json
     * string only contains simple objects (no arrays, etc).
     * 
     * Parsed mapreduce result
     */

    public StringToStringMap(String contentOfMapAsJson) throws ParseException {
        super();
        JSONParser parser = new JSONParser();
        JSONObject jsonObj = (JSONObject) parser.parse(contentOfMapAsJson);
        @SuppressWarnings("unchecked")
        Set<String> keys = jsonObj.keySet();
        for (String key : keys) {
            Object value = jsonObj.get(key);
            // Remove key from json string
            if (value instanceof String) {
                super.put(key, (String) value);
            }
        }
    }

    public void put(String key, ByteIterator value) {
        String valueAsString = value.toString();
        super.put(key, valueAsString);
    }

    public ByteIterator getAsByteIt(String key) {
        String value = super.get(key);
        return new StringByteIterator(value);
    }

    /*
     * This method checks whether all values belonging to the values of expected
     * match with the corresponding values in real.
     */
    public static boolean doesValuesMatch(StringToStringMap expected, StringToStringMap real) {
        for (String key : expected.keySet()) {
            String expectedValue = expected.get(key);
            String realValue = real.get(key);
            if (realValue == null || !expectedValue.equals(realValue))
                return false;
        }
        return true;
    }

    public static void print(StringToStringMap map) {
        for (String key : map.keySet()) {
            String value = map.get(key);
            System.err.println("Key=" + key + "; Values=" + value);
        }
    }
}