br.com.jarch.faces.converter.YearMonthJsfConverter Maven / Gradle / Ivy

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package br.com.jarch.faces.converter;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.FacesConverter;
import java.io.Serializable;
import java.time.YearMonth;
import java.time.format.DateTimeFormatter;

import static java.time.format.DateTimeFormatter.ofPattern;

@FacesConverter("br.com.jarch.faces.converter.yearMonthConverter")
public class YearMonthJsfConverter implements Serializable, Converter {

    @Override
    public YearMonth getAsObject(FacesContext context, UIComponent component, String value) {
        try {
            String newValue = value;

            if (newValue == null || newValue.isEmpty() || newValue.replaceAll("_", "").replace("/", "").isEmpty()) {
                return null;
            }

            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("MM/yyyy");

            if (newValue.length() == 10) {
                newValue = newValue.substring(3);
            }

            return YearMonth.parse(newValue, formatter);
        } catch (Exception ex) {
            return null;
        }
    }

    @Override
    public String getAsString(FacesContext context, UIComponent component, Object value) {
        if (value == null) {
            return null;
        }

        if (value.toString().isEmpty()) {
            return "";
        }

        YearMonth yearMonth = (YearMonth) value;

        return yearMonth.format(ofPattern("MM/yyyy"));
    }
}