Converter for http://objectbox.io/

ObjectBoxStringListConverter.kt

package com.test.objectbox.converters

import io.objectbox.converter.PropertyConverter

/**
 * Created by milenkojovanovic on 9/14/17.
 */

class StringListConverter : PropertyConverter<List<String>, String> {
    override fun convertToEntityProperty(databaseValue: String?): List<String> {
        if (databaseValue == null) return ArrayList()
        return databaseValue.split(",")
    }

    override fun convertToDatabaseValue(entityProperty: List<String>?): String {
        if (entityProperty == null) return ""
        if (entityProperty.isEmpty()) return ""
        val builder = StringBuilder()
        entityProperty.forEach { builder.append(it).append(",") }
        builder.deleteCharAt(builder.length - 1)
        return builder.toString()
    }
}