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• dhelm-candlepattern
• 1.0.4
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• UpsideTasukiGap.java

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/**
*Copyright 2018 Knc Solutions Private Limited

*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.
*/
package in.kncsolutions.dhelm.candlepattern.multiline;
import java.util.*; 
import in.kncsolutions.dhelm.candlebasic.*;
import in.kncsolutions.dhelm.exceptions.DataException;
import in.kncsolutions.dhelm.mathcal.Mathfns;
import in.kncsolutions.dhelm.mathcal.CandleFacts;
/**
*According to literature the upside tasuki gap  pattern is a three line pattern composed of a
*long candle with white body followed by a  candle with white, followed by a black candle, where the low of the middle  candle is above the high of the
*previous long white candle and the latest black candle's opening is within the body of the middle candle. The low of the latest black candle should be above the high  of the 
*first long white candle.
*/
public class UpsideTasukiGap{
private List Open=new ArrayList();
private List High=new ArrayList();
private List Low=new ArrayList();
private List Close=new ArrayList();
private int RefBody;
private int RefLength;
private int RefTrend;;
private double Percentage;
private double []trendPrior={0,0};
private boolean isUpsideTasukiGap;
/**
*@param open : List of opening prices where first element is the latest data.
*@param high : List of high prices where first element is the latest data.
*@param low : List of low prices where first element is the latest data.
*@param close : List of closing prices where first element is the latest data.
*@param numBody : Number of previous periods w.r.t which it is to be found that if the latest candle's body  is greater than the average body length of those past consecutive periods or not. 
*@param numLen : Number of previous periods w.r.t which it is to be found that if the latest candle is long or short.
*@param numTrend : Number of previous periods w.r.t which the previous trend have to be approximated.
*@param percentage : The percentage by which if the latest candle is longer than the previous candles, it will be treated as a long candle, otherwise short. 
*@throws DataException if sufficient data not available.
*/
public UpsideTasukiGap(List open,List high,List low,List close,int numBody,int numLen,int numTrend,double percentage)throws DataException{
  Open.addAll(open);
  High.addAll(high);
  Low.addAll(low);
  Close.addAll(close);
  RefBody=numBody;
  RefLength=numLen;
  RefTrend=numTrend;
  Percentage=percentage;
  isUpsideTasukiGap=false;
  if(Open.size()<((RefTrend+3>RefLength) ? RefTrend+3 : RefLength)
      || (Open.size()!=Close.size() || Open.size()!=High.size() || Open.size()!=Low.size() )){
    throw new DataException();
  }
  else{
	UpsideTasukiGap();
  }
}
/*
*
*/
private void UpsideTasukiGap()throws DataException{
  if((Close.get(2)>Open.get(2)) && validBasicCandle(3)){
    if((Close.get(1)>Open.get(1)) && Low.get(1)>High.get(2)){
	  if((Close.get(0)=Open.get(1) && Low.get(0)>High.get(2)){	    
	      trendPrior=Mathfns.ComputeTrendLine(Close.subList(3,RefTrend+3),Close.subList(3,RefTrend+3).size());
	      if(trendPrior[0]<0)
		    isUpsideTasukiGap=true;
	  }
	}
  }
}
/*
*
*/
private boolean validBasicCandle(int i)throws DataException{
  if(i==3 && (new WhiteCandle(Open.subList(2,Open.size()),High.subList(2,High.size()),Low.subList(2,Low.size()),Close.subList(2,Close.size()),RefBody,RefLength,Percentage)).isWhiteCandle()
    || (new LongWhiteCandle(Open.subList(2,Open.size()),High.subList(2,High.size()),Low.subList(2,Low.size()),Close.subList(2,Close.size()),RefBody,RefLength,Percentage)).isLongWhiteCandle() 
	 || (new WhiteMarubozu(Open.subList(2,Open.size()),High.subList(2,High.size()),Low.subList(2,Low.size()),Close.subList(2,Close.size()))).isLongWhiteMarubozu(RefLength,Percentage)
	  || (new ClosingWhiteMarubozu(Open.subList(2,Open.size()),High.subList(2,High.size()),Low.subList(2,Low.size()),Close.subList(2,Close.size()))).isLongClosingWhiteMarubozu(RefLength,Percentage)
	   || (new OpeningWhiteMarubozu(Open.subList(2,Open.size()),High.subList(2,High.size()),Low.subList(2,Low.size()),Close.subList(2,Close.size()))).isLongOpeningWhiteMarubozu(RefLength,Percentage)){
	   return true;
  }
  
  return false;
}

/*
*
*/
private boolean isShort()throws DataException{
 double avgCandleLength=CandleFacts.getAverageLength(High.subList(1,High.size()),Low.subList(1,Low.size()),RefLength); 
  if((High.get(1)-Low.get(1))<=avgCandleLength*Percentage/100)return true;
  return false;
}
/**
*@return Returns true if the upside tasuki gap pattern is generated. 
*/
public boolean isUpsideTasukiGap(){
  return isUpsideTasukiGap;
}
}