org.supercsv.ext.builder.time.PeriodCellProcessorBuilder Maven / Gradle / Ivy

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CSVのJavaライブラリであるSuperCSVに、アノテーション機能を追加したライブラリです。

There is a newer version: 2.3

package org.supercsv.ext.builder.time;

import java.lang.annotation.Annotation;
import java.time.DateTimeException;
import java.time.Period;
import java.util.Optional;

import org.supercsv.cellprocessor.ift.CellProcessor;
import org.supercsv.cellprocessor.time.FmtPeriod;
import org.supercsv.cellprocessor.time.ParsePeriod;
import org.supercsv.ext.builder.AbstractCellProcessorBuilder;
import org.supercsv.ext.builder.CellProcessorBuilder;
import org.supercsv.ext.exception.SuperCsvInvalidAnnotationException;
import org.supercsv.ext.util.Utils;

/**
 * {@link Period}型の{@link CellProcessorBuilder}クラス。
 * 
 * @since 1.2
 * @author T.TSUCHIE
 *
 */
public class PeriodCellProcessorBuilder extends AbstractCellProcessorBuilder {
    
    @Override
    public CellProcessor buildOutputCellProcessor(final Class type, final Annotation[] annos,
            final CellProcessor processor, final boolean ignoreValidationProcessor) {
        
        CellProcessor cp = processor;
        cp = (cp == null ? new FmtPeriod() : new FmtPeriod(cp));
        
        return cp;
    }
    
    @Override
    public CellProcessor buildInputCellProcessor(final Class type, final Annotation[] annos,
            final CellProcessor processor) {
        
        CellProcessor cp = processor;
        cp = (cp == null ? new ParsePeriod() : new ParsePeriod(cp));
        
        return cp;
    }
    
    @Override
    public Optional parseValue(final Class type, final Annotation[] annos, final String strValue) {
        
        if(Utils.isEmpty(strValue)) {
            return Optional.empty();
        }
        
        try {
            return Optional.of(Period.parse(strValue));
            
        } catch(DateTimeException e) {
            throw new SuperCsvInvalidAnnotationException(
                    String.format("default '%s' value cannot parse to Period.", strValue), e);
            
        }
    }
}