/*
 * 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.beam.runners.spark.structuredstreaming.translation.batch;

import org.apache.beam.runners.spark.structuredstreaming.translation.TransformTranslator;
import org.apache.beam.runners.spark.structuredstreaming.translation.TranslationContext;
import org.apache.beam.runners.spark.structuredstreaming.translation.helpers.EncoderHelpers;
import org.apache.beam.runners.spark.structuredstreaming.translation.helpers.WindowingHelpers;
import org.apache.beam.sdk.transforms.PTransform;
import org.apache.beam.sdk.transforms.windowing.Window;
import org.apache.beam.sdk.util.WindowedValue;
import org.apache.beam.sdk.values.PCollection;
import org.apache.spark.sql.Dataset;

class WindowAssignTranslatorBatch<T>
    implements TransformTranslator<PTransform<PCollection<T>, PCollection<T>>> {

  @Override
  public void translateTransform(
      PTransform<PCollection<T>, PCollection<T>> transform, TranslationContext context) {

    Window.Assign<T> assignTransform = (Window.Assign<T>) transform;
    @SuppressWarnings("unchecked")
    final PCollection<T> input = (PCollection<T>) context.getInput();
    @SuppressWarnings("unchecked")
    final PCollection<T> output = (PCollection<T>) context.getOutput();

    Dataset<WindowedValue<T>> inputDataset = context.getDataset(input);
    if (WindowingHelpers.skipAssignWindows(assignTransform, context)) {
      context.putDataset(output, inputDataset);
    } else {
      Dataset<WindowedValue<T>> outputDataset =
          inputDataset.map(
              WindowingHelpers.assignWindowsMapFunction(assignTransform.getWindowFn()),
              EncoderHelpers.windowedValueEncoder());
      context.putDataset(output, outputDataset);
    }
  }
}

@@ -1350,16 +1350,74 @@
 Window;%0A
+import org.apache.beam.sdk.transforms.windowing.WindowFn;%0A
 import o
@@ -2283,16 +2283,240 @@
  else %7B%0A
+      WindowFn%3CT, ?%3E windowFn = assignTransform.getWindowFn();%0A      WindowedValue.FullWindowedValueCoder%3CT%3E windoweVdalueCoder = WindowedValue.FullWindowedValueCoder%0A          .of(input.getCoder(), windowFn.windowCoder());%0A
       Da
@@ -2643,37 +2643,16 @@
 ion(
-assignTransform.getW
+w
 indowFn
-()
 ),%0A 
@@ -2683,29 +2683,40 @@
 ers.
+fromBeamCoder(
 windowe
-d
 V
+d
 alue
-Enc
+C
 oder
-(
 ));%0A

Apply new Encoders to Window assign translation