com.github.TKnudsen.ComplexDataObject.model.processors.complexDataObject.BigDecimalConverter Maven / Gradle / Ivy

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A library that models real-world objects in Java, referred to as ComplexDataObjects. Other features: IO and preprocessing of ComplexDataObjects.

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package com.github.TKnudsen.ComplexDataObject.model.processors.complexDataObject;

import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.text.ParseException;
import java.util.Arrays;
import java.util.List;

import com.github.TKnudsen.ComplexDataObject.data.complexDataObject.ComplexDataContainer;
import com.github.TKnudsen.ComplexDataObject.data.complexDataObject.ComplexDataObject;

/**
 * 
 * Title: BigDecimalConverter
 * 
 * 
 * 
 * Description:
 * 
 * 
 * 
 * Copyright: Copyright (c) 2016
 * 
 * 
 * @author Juergen Bernard
 * @version 1.01
 */
public class BigDecimalConverter implements IComplexDataObjectProcessor {

	String attribute;
	String targetAttribute;

	DecimalFormat decimalFormat = null;

	public BigDecimalConverter(String attribute, String targetAttribute, Character decimalSeparator, Character thousandsSeparator) {
		this.attribute = attribute;
		this.targetAttribute = targetAttribute;

		DecimalFormatSymbols symbols = new DecimalFormatSymbols();
		symbols.setGroupingSeparator(',');
		symbols.setDecimalSeparator('.');
		String pattern = "#,##0.0#";
		decimalFormat = new DecimalFormat(pattern, symbols);
		decimalFormat.setParseBigDecimal(true);
	}

	@Override
	public void process(ComplexDataContainer container) {
		// add new attribute to schema
		container.addAttribute(targetAttribute, BigDecimal.class, BigDecimal.ZERO);

		for (ComplexDataObject complexDataObject : container)
			process(Arrays.asList(complexDataObject));
	}

	@Override
	public void process(List data) {
		// parse
		for (ComplexDataObject complexDataObject : data) {
			BigDecimal bd = BigDecimal.ZERO;

			try {
				bd = (BigDecimal) decimalFormat.parse(complexDataObject.getAttribute(attribute).toString());
			} catch (ParseException e) {
				e.printStackTrace();
			}

			complexDataObject.add(targetAttribute, bd);
		}
	}

	@Override
	public DataProcessingCategory getPreprocessingCategory() {
		return DataProcessingCategory.SECONDARY_DATA_PROVIDER;
	}

}