com.bizosys.dataservice.sql.KVPairsSerde.java Source code

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Here is the source code for com.bizosys.dataservice.sql.KVPairsSerde.java

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/*
* Copyright 2015 Bizosys Technologies Limited
*
* Licensed to the Bizosys Technologies Limited (Bizosys) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The Bizosys licenses this file
* to you 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.bizosys.dataservice.sql;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.apache.log4j.Logger;

import com.bizosys.dataservice.util.StringUtils;
import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;

public final class KVPairsSerde {

    private static final char COMMA = ',';
    private static final char EQUAL = '=';

    private final static Logger LOG = Logger.getLogger(KVPairsSerde.class);

    public static final void deser(final String inputStr, final Map<String, String> container) {

        if (StringUtils.isEmpty(inputStr))
            return;

        int index1 = 0;
        int index2 = 0;

        boolean hasMore = true;
        while (hasMore) {
            index1 = inputStr.indexOf(EQUAL, index2);
            if (-1 == index1)
                return;
            final String key = inputStr.substring(index2, index1);
            index2 = inputStr.indexOf(COMMA, index1 + 1);
            if (index2 == -1) {
                index2 = inputStr.length();
                hasMore = false;
            }
            final String value = inputStr.substring(index1 + 1, index2);
            index2++;
            container.put(key.trim(), value);
        }
    }

    public static final void deserJson(final String jsonStr, final Map<String, String> container) {

        if (StringUtils.isEmpty(jsonStr))
            return;

        Gson gson = new Gson();
        JsonElement jsonElem = gson.fromJson(jsonStr, JsonElement.class);
        JsonObject jsonObj = jsonElem.getAsJsonObject();

        if (!jsonObj.has("variables"))
            return;

        Iterator<JsonElement> variablesIterator = jsonObj.get("variables").getAsJsonArray().iterator();

        while (variablesIterator.hasNext()) {
            JsonObject variableObj = (JsonObject) variablesIterator.next();

            if (variableObj.has("key") && variableObj.has("value")) {
                String varKey = variableObj.get("key").getAsString();
                JsonElement obj = variableObj.get("value");
                String varVal = (obj.isJsonNull()) ? null : obj.getAsString();
                container.put(varKey, varVal);
            }
        }
        if (LOG.isDebugEnabled())
            LOG.debug("Parsed variables are : " + container.toString());
    }

    /**
     * 
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        String inputStr = "{\"variables\":[{\"key\":\"PWAccountID\",\"value\":\"157\"},{\"key\":\"CompanyName\",\"value\":\"''\"},{\"key\":\"Address1\",\"value\":\"''\"},{\"key\":\"Address2\",\"value\":null},{\"key\":\"City\",\"value\":null},{\"key\":\"StateID\",\"value\":\"4\"},{\"key\":\"CountryID\",\"value\":\"14\"},{\"key\":\"ZipCode\",\"value\":\"''\"},{\"key\":\"Phone\",\"value\":\"''\"},{\"key\":\"WebURL\",\"value\":null},{\"key\":\"CompanyDescription\",\"value\":null},{\"key\":\"PrimaryUserID\",\"value\":null},{\"key\":\"YearsInBusiness\",\"value\":null},{\"key\":\"AccountStatus\",\"value\":\"5\"},{\"key\":\"SYSRoleID\",\"value\":\"4\"},{\"key\":\"TimeZoneID\",\"value\":\"33\"},{\"key\":\"Subscribed\",\"value\":\"0\"},{\"key\":\"APPID\",\"value\":\"1\"},{\"key\":\"AccountExpiryDate\",\"value\":null},{\"key\":\"PurchaseMode\",\"value\":\"2\"}]}";
        Map<String, String> container = new HashMap<String, String>();
        KVPairsSerde.deserJson(inputStr, container);
        System.out.println(container);
        //      long start = System.currentTimeMillis();
        //      for (int i = 0; i < 1; i++) {
        //         System.out.println(container.toString());
        //         container.clear();
        //      }
        //      long end = System.currentTimeMillis();
        //      long millisTime = end - start;
        //      System.out.println("Parsed IN " + millisTime + " milliseconds.");
    }

}