laura-catering-server-spring-boot/src/main/java/commons/exporters/impl/BaseExporter.java

package commons.exporters.impl;

import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.List;

public abstract class BaseExporter<T> {

	protected List<T> dataSet;
	
	protected abstract List<T> fetchDataToExport();
	protected abstract void setFileName();
	public abstract List<String> getFullFileName();
	protected abstract void exportRecord(T record);
	protected String baseFolder;
	protected String zipFileName;
	protected abstract boolean createFile();
	protected abstract void closeFile();
	
	public void setBaseFolder(String baseFolder) {
		this.baseFolder = baseFolder;
	}
	
	public void setFileName(String zipFileName) {
		this.zipFileName = zipFileName;
	}
	
	public boolean runExport() {
		boolean res=true;
		
		dataSet = fetchDataToExport();
		setFileName();
		if (createFile()) {
			
			for (T currentRecord:dataSet) {
				exportRecord(currentRecord);
			}
				
		} else
			res = false;
		closeFile();
		return res;	
	}
	
	protected String formatNum(Float f, int dec) {
		if (f==null)
    		return "0";
        NumberFormat format = DecimalFormat.getInstance();
        format.setRoundingMode(RoundingMode.FLOOR);
        format.setGroupingUsed(false);
       
        format.setMinimumFractionDigits(dec);
        format.setMaximumFractionDigits(dec);
        return format.format(f).replace(",","").replace(".", "");
        
    	
	}
	
    protected String formatNumber(Float f) {
    	if (f==null)
    		return "0";
        NumberFormat format = DecimalFormat.getInstance();
        format.setRoundingMode(RoundingMode.FLOOR);
        format.setGroupingUsed(false);
       
        format.setMinimumFractionDigits(0);
        format.setMaximumFractionDigits(0);
        return format.format(f);
    }

	
}