com.backendless.hive.HiveSerializer Maven / Gradle / Ivy

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package com.backendless.hive;

import com.backendless.utils.WeborbSerializationHelper;

import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Map;


final class HiveSerializer
{
  static String serialize( Object obj )
  {
    return new String( WeborbSerializationHelper.serialize( obj ), StandardCharsets.UTF_8 );
  }

  static  T deserialize( String jsonString )
  {
    return (T) WeborbSerializationHelper.deserialize( jsonString.getBytes( StandardCharsets.UTF_8 ) );
  }

  static HashMap serializeAsMap( Map mapOfObjects )
  {
    HashMap result = new HashMap<>();

    for( Map.Entry entry : mapOfObjects.entrySet() )
    {
      if( entry.getValue() == null )
        throw new IllegalArgumentException( "null value for key '" + entry.getKey() + "'" );

      result.put( entry.getKey(), serialize( entry.getValue() ) );
    }

    return result;
  }

  static  HashMap deserialize( Map mapOfJsonStrings )
  {
    HashMap result = new HashMap<>();

    for( Map.Entry entry : mapOfJsonStrings.entrySet() )
      result.put( entry.getKey(), deserialize( entry.getValue() ) );

    return result;
  }

  static ArrayList serializeAsList( Collection listOfObjects )
  {
    ArrayList result = new ArrayList<>();

    for( Object obj : listOfObjects )
    {
      if( obj == null )
        throw new IllegalArgumentException( "null value found in collection" );

      result.add( serialize( obj ) );
    }

    return result;
  }

  static  ArrayList deserializeAsList( String[] arrayOfJsonStrings )
  {
    ArrayList result = new ArrayList<>();

    for( String listOfJsonString : arrayOfJsonStrings )
      result.add( deserialize( listOfJsonString ) );

    return result;
  }

  static  HashSet deserializeAsSet( String[] listOfJsonStrings )
  {
    HashSet result = new HashSet<>();

    for( String listOfJsonString : listOfJsonStrings )
      result.add( deserialize( listOfJsonString ) );

    return result;
  }

  static  LinkedHashSet deserializeAsLinkedSet( String[] listOfJsonStrings )
  {
    LinkedHashSet result = new LinkedHashSet<>();

    for( String listOfJsonString : listOfJsonStrings )
      result.add( deserialize( listOfJsonString ) );

    return result;
  }
}