com.databricks.spark.xml.util.ParseMode.scala Maven / Gradle / Ivy

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/*
 * Copyright 2014 Databricks
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.databricks.spark.xml.util

import java.util.Locale

import org.slf4j.LoggerFactory


sealed trait ParseMode {
  /**
   * String name of the parse mode.
   */
  def name: String
}

/**
 * This mode permissively parses the records.
 */
case object PermissiveMode extends ParseMode { val name = "PERMISSIVE" }

/**
 * This mode ignores the whole corrupted records.
 */
case object DropMalformedMode extends ParseMode { val name = "DROPMALFORMED" }

/**
 * This mode throws an exception when it meets corrupted records.
 */
case object FailFastMode extends ParseMode { val name = "FAILFAST" }

object ParseMode {
  private val logger = LoggerFactory.getLogger(ParseMode.getClass)

  /**
   * Returns the parse mode from the given string.
   */
  def fromString(mode: String): ParseMode = mode.toUpperCase(Locale.ROOT) match {
    case PermissiveMode.name => PermissiveMode
    case DropMalformedMode.name => DropMalformedMode
    case FailFastMode.name => FailFastMode
    case _ =>
      logger.warn(s"$mode is not a valid parse mode. Using ${PermissiveMode.name}.")
      PermissiveMode
  }
}