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.test.schemata.orderstream;
  
  import org.apache.calcite.DataContext;
  import org.apache.calcite.linq4j.Enumerable;
  import org.apache.calcite.linq4j.Linq4j;
  import org.apache.calcite.schema.StreamableTable;
  import org.apache.calcite.schema.Table;
  
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  import java.util.Iterator;
  
  /**
   * Table representing an infinitely larger ORDERS stream.
   */
  public class InfiniteOrdersTable extends BaseOrderStreamTable
      implements StreamableTable {
    @Override public Enumerable<@Nullable Object[]> scan(DataContext root) {
      return Linq4j.asEnumerable(() -> new Iterator<Object[]>() {
        private final String[] items = {"paint", "paper", "brush"};
        private int counter = 0;
  
        @Override public boolean hasNext() {
          return true;
        }
  
        @Override public Object[] next() {
          final int index = counter++;
          return new Object[]{
              System.currentTimeMillis(), index, items[index % items.length], 10};
        }
  
        @Override public void remove() {
          throw new UnsupportedOperationException();
        }
      });
    }
  
    @Override public Table stream() {
      return this;
    }
  }
  