content: /*
   * 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.calcite.adapter.enumerable.impl;
  
  import org.apache.calcite.adapter.enumerable.RexToLixTranslator;
  import org.apache.calcite.adapter.enumerable.WinAggFrameResultContext;
  import org.apache.calcite.adapter.enumerable.WinAggImplementor;
  import org.apache.calcite.adapter.enumerable.WinAggResultContext;
  import org.apache.calcite.linq4j.tree.BlockBuilder;
  import org.apache.calcite.linq4j.tree.Expression;
  
  import java.util.List;
  import java.util.function.Function;
  
  /**
   * Implementation of
   * {@link org.apache.calcite.adapter.enumerable.WinAggResultContext}.
   */
  public abstract class WinAggResultContextImpl extends AggResultContextImpl
      implements WinAggResultContext {
  
    private final Function<BlockBuilder, WinAggFrameResultContext> frame;
  
    /**
     * Creates window aggregate result context.
     *
     * @param block code block that will contain the added initialization
     * @param accumulator accumulator variables that store the intermediate
     *                    aggregate state
     */
    protected WinAggResultContextImpl(BlockBuilder block,
        List<Expression> accumulator,
        Function<BlockBuilder, WinAggFrameResultContext> frameContextBuilder) {
      super(block, null, accumulator, null, null);
      this.frame = frameContextBuilder;
    }
  
    @SuppressWarnings("Guava")
    @Deprecated // to be removed before 2.0
    protected WinAggResultContextImpl(BlockBuilder block,
        List<Expression> accumulator,
        com.google.common.base.Function<BlockBuilder, WinAggFrameResultContext> frameContextBuilder) {
      this(block, accumulator,
          (Function<BlockBuilder, WinAggFrameResultContext>) frameContextBuilder);
    }
  
    private WinAggFrameResultContext getFrame() {
      return frame.apply(currentBlock());
    }
  
    @Override public final List<Expression> arguments(Expression rowIndex) {
      return rowTranslator(rowIndex).translateList(rexArguments());
    }
  
    @Override public Expression computeIndex(Expression offset,
        WinAggImplementor.SeekType seekType) {
      return getFrame().computeIndex(offset, seekType);
    }
  
    @Override public Expression rowInFrame(Expression rowIndex) {
      return getFrame().rowInFrame(rowIndex);
    }
  
    @Override public Expression rowInPartition(Expression rowIndex) {
      return getFrame().rowInPartition(rowIndex);
    }
  
    @Override public RexToLixTranslator rowTranslator(Expression rowIndex) {
      return getFrame().rowTranslator(rowIndex);
    }
  
    @Override public Expression compareRows(Expression a, Expression b) {
      return getFrame().compareRows(a, b);
    }
  
    @Override public Expression index() {
      return getFrame().index();
    }
  
    @Override public Expression startIndex() {
      return getFrame().startIndex();
    }
  
    @Override public Expression endIndex() {
      return getFrame().endIndex();
    }
  
    @Override public Expression hasRows() {
      return getFrame().hasRows();
    }
  
    @Override public Expression getFrameRowCount() {
      return getFrame().getFrameRowCount();
    }
  
    @Override public Expression getPartitionRowCount() {
      return getFrame().getPartitionRowCount();
    }
  }
  