/*
 * 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
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/**
 * Provides the "version 3" scan framework (which can also be thought of
 * as EVF version 2). This version provides basically the same API as
 * version 2, but with an implementation driven by schema rather than
 * vectors.
 * <p>
 * Build a scan using the {@link ScanLifecycleBuilder}. Provide a subclass
 * of {@link ReaderFactory} that will create each of your
 * {@link ManagedReader} instances as needed. The framework handles the
 * details of schemas, missing columns, implicit columns and the rest.
 */
package org.apache.drill.exec.physical.impl.scan.v3;
