matchers.custom.CustomNamespaceMatcher.scala Maven / Gradle / Ivy

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package avrohugger
package matchers
package custom

object CustomNamespaceMatcher {

  // Custom namespaces work for simple types, but seem to fail for records 
  // within unions, see http://apache-avro.679487.n3.nabble.com/Deserialize-with-different-schema-td4032782.html
  def checkCustomNamespace(
    maybeSchemaNamespace: Option[String],
    typeMatcher: TypeMatcher,
    maybeDefaultNamespace: Option[String]): Option[String] =
    maybeSchemaNamespace.flatMap { schemaNamespace =>
      typeMatcher.customNamespaces.get(schemaNamespace) orElse {
        typeMatcher.customNamespaces.filter(ns => ns._1.contains('*')).filter(wildcardedNs =>
          schemaNamespace.contains(wildcardedNs._1.substring(0, wildcardedNs._1.indexOf('*') - 1))) match {
          case singleNs if singleNs.size == 1 =>
            Some(singleNs.head._2)
          case multipleNs if multipleNs.size > 1 =>
            throw new java.lang.RuntimeException("Multiple conflicting custom namespaces supplied")
          case _ => None
        }
      }
    }.orElse(maybeDefaultNamespace)

}