StringConverterEmptyToNull.java

package de.jpaw.bonaparte.converter;

import de.jpaw.bonaparte.pojos.meta.AlphanumericElementaryDataItem;

/** Sample implementation of StringConverter interface which replaces empty Strings with nulls */
public class StringConverterEmptyToNull extends DataConverterAbstract<String,AlphanumericElementaryDataItem> {

    @Override
    public String convert(String oldValue, final AlphanumericElementaryDataItem meta) {
        return (oldValue != null) && oldValue.isEmpty() ? null : oldValue;
    }

}