org.apache.sedona.sql.utils.GeometrySerializer.scala Maven / Gradle / Ivy

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.sedona.sql.utils

import org.apache.spark.sql.catalyst.util.ArrayData
import org.locationtech.jts.geom.Geometry
import org.locationtech.jts.io.{WKBReader, WKBWriter}

/**
  * SerDe using the WKB reader and writer objects
  */
object GeometrySerializer {

  /**
    * Given a geometry returns array of bytes
    *
    * @param geometry JTS geometry
    * @return Array of bites represents this geometry
    */
  def serialize(geometry: Geometry): Array[Byte] = {
    val writer = new WKBWriter(2, 2, true)
    writer.write(geometry)
  }

  /**
    * Given ArrayData returns Geometry
    *
    * @param values ArrayData 
    * @return JTS geometry
    */
  def deserialize(values: ArrayData): Geometry = {
    val reader = new WKBReader()
    reader.read(values.toByteArray())
  }
}