XMLデータバインダ

CaseConvertingXmlDataBinder.groovy

import grails.databinding.SimpleDataBinder
import groovy.util.logging.Slf4j

/**
 * XML文字列のタグ名の{@code snake_case}と{@code camelCase}を変換してから、対象オブジェクトにデータバインディングします。
 */
@Slf4j
class CaseConvertingXmlDataBinder {

    void bind(Object object, String snakeCasedXml) {
        log.debug "snake_cased XML: $snakeCasedXml"
        def camelCasedXml = camelToSnakeForTagName(snakeCasedXml)
        log.debug "camelCased XML: $camelCasedXml"
        def parsedXml = new XmlSlurper().parseText(camelCasedXml)
        new SimpleDataBinder().bind(object, parsedXml)
    }

    private static String camelToSnakeForTagName(String xml) {
        xml.replaceAll(/<([^>]+?)>/) { tagName, all ->
            tagName.replaceAll(/_(.)/) { it[1].toUpperCase() }
        }
    }
}