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,
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   * See the License for the specific language governing permissions and
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  package org.apache.beam.sdk.extensions.sql.impl.rel;
  
  import java.util.HashMap;
  import java.util.Map;
  import org.apache.beam.sdk.Pipeline;
  import org.apache.beam.sdk.extensions.sql.impl.BeamSqlEnv;
  import org.apache.beam.sdk.extensions.sql.meta.BeamSqlTable;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.Row;
  
  /** Base class for rel test. */
  public abstract class BaseRelTest {
    private static Map<String, BeamSqlTable> tables = new HashMap<>();
    protected static BeamSqlEnv env = BeamSqlEnv.readOnly("test", tables);
  
    protected static PCollection<Row> compilePipeline(String sql, Pipeline pipeline) {
      env = BeamSqlEnv.readOnly("test", tables);
      return BeamSqlRelUtils.toPCollection(pipeline, env.parseQuery(sql));
    }
  
    protected static void registerTable(String tableName, BeamSqlTable table) {
      tables.put(tableName, table);
      env = BeamSqlEnv.readOnly("test", tables);
    }
  
    protected static BeamSqlTable getTable(String tableName) {
      return tables.get(tableName);
    }
  }
  