/*
 * 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.sdk.extensions.sql;

import static org.hamcrest.Matchers.containsString;
import static org.junit.internal.matchers.ThrowableMessageMatcher.hasMessage;

import org.apache.beam.sdk.extensions.sql.impl.ParseException;
import org.apache.beam.sdk.testing.PAssert;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.PCollectionTuple;
import org.apache.beam.sdk.values.Row;
import org.apache.beam.sdk.values.TupleTag;
import org.junit.Test;

/** Tests for WHERE queries with BOUNDED PCollection. */
public class BeamSqlDslFilterTest extends BeamSqlDslBase {
  /** single filter with bounded PCollection. */
  @Test
  public void testSingleFilterWithBounded() throws Exception {
    runSingleFilter(boundedInput1);
  }

  /** single filter with unbounded PCollection. */
  @Test
  public void testSingleFilterWithUnbounded() throws Exception {
    runSingleFilter(unboundedInput1);
  }

  private void runSingleFilter(PCollection<Row> input) throws Exception {
    String sql = "SELECT * FROM PCOLLECTION WHERE f_int = 1";

    PCollection<Row> result = input.apply("testSingleFilter", SqlTransform.query(sql));

    PAssert.that(result).containsInAnyOrder(rowsInTableA.get(0));

    pipeline.run().waitUntilFinish();
  }

  /** composite filters with bounded PCollection. */
  @Test
  public void testCompositeFilterWithBounded() throws Exception {
    runCompositeFilter(boundedInput1);
  }

  /** composite filters with unbounded PCollection. */
  @Test
  public void testCompositeFilterWithUnbounded() throws Exception {
    runCompositeFilter(unboundedInput1);
  }

  private void runCompositeFilter(PCollection<Row> input) throws Exception {
    String sql =
        "SELECT * FROM TABLE_A"
            + " WHERE f_int > 1 AND (f_long < 3000 OR f_string = 'string_row3')";

    PCollection<Row> result =
        PCollectionTuple.of(new TupleTag<>("TABLE_A"), input)
            .apply("testCompositeFilter", SqlTransform.query(sql));

    PAssert.that(result).containsInAnyOrder(rowsInTableA.get(1), rowsInTableA.get(2));

    pipeline.run().waitUntilFinish();
  }

  /** nothing return with filters in bounded PCollection. */
  @Test
  public void testNoReturnFilterWithBounded() throws Exception {
    runNoReturnFilter(boundedInput1);
  }

  /** nothing return with filters in unbounded PCollection. */
  @Test
  public void testNoReturnFilterWithUnbounded() throws Exception {
    runNoReturnFilter(unboundedInput1);
  }

  private void runNoReturnFilter(PCollection<Row> input) throws Exception {
    String sql = "SELECT * FROM TABLE_A WHERE f_int < 1";

    PCollection<Row> result =
        PCollectionTuple.of(new TupleTag<>("TABLE_A"), input)
            .apply("testNoReturnFilter", SqlTransform.query(sql));

    PAssert.that(result).empty();

    pipeline.run().waitUntilFinish();
  }

  @Test
  public void testFromInvalidTableName1() throws Exception {
    exceptions.expect(ParseException.class);
    exceptions.expectCause(hasMessage(containsString("Object 'TABLE_B' not found")));
    pipeline.enableAbandonedNodeEnforcement(false);

    String sql = "SELECT * FROM TABLE_B WHERE f_int < 1";

    PCollectionTuple.of(new TupleTag<>("TABLE_A"), boundedInput1)
        .apply("testFromInvalidTableName1", SqlTransform.query(sql));

    pipeline.run().waitUntilFinish();
  }

  @Test
  public void testInvalidFilter() throws Exception {
    exceptions.expect(ParseException.class);
    exceptions.expectCause(hasMessage(containsString("Column 'f_int_na' not found in any table")));
    pipeline.enableAbandonedNodeEnforcement(false);

    String sql = "SELECT * FROM PCOLLECTION WHERE f_int_na = 0";

    boundedInput1.apply(SqlTransform.query(sql));

    pipeline.run().waitUntilFinish();
  }
}