com.hantsylabs.example.ee7.jpa.ListToStringConveter.java Source code

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Here is the source code for com.hantsylabs.example.ee7.jpa.ListToStringConveter.java

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package com.hantsylabs.example.ee7.jpa;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.persistence.AttributeConverter;
import javax.persistence.Converter;
import org.apache.commons.lang3.StringUtils;

/**
 *
 * @author hantsy
 */
@Converter
public class ListToStringConveter implements AttributeConverter<List<String>, String> {

    //@Inject Logger log;

    @Override
    public String convertToDatabaseColumn(List<String> attribute) {
        if (attribute == null || attribute.isEmpty()) {
            return "";
        }
        return StringUtils.join(attribute, ",");
    }

    @Override
    public List<String> convertToEntityAttribute(String dbData) {
        if (dbData == null || dbData.trim().length() == 0) {
            return new ArrayList<String>();
        }

        String[] data = dbData.split(",");
        return Arrays.asList(data);
    }
}