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Core Calcite APIs and engine.
There is a newer version: 1.21.0.265
/*
 * 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.jdbc;

import org.apache.calcite.avatica.AvaticaResultSet;
import org.apache.calcite.avatica.AvaticaResultSetMetaData;
import org.apache.calcite.avatica.AvaticaStatement;
import org.apache.calcite.avatica.ColumnMetaData;
import org.apache.calcite.avatica.Handler;
import org.apache.calcite.avatica.Meta;
import org.apache.calcite.avatica.util.Cursor;
import org.apache.calcite.linq4j.Enumerator;
import org.apache.calcite.linq4j.Linq4j;
import org.apache.calcite.runtime.ArrayEnumeratorCursor;
import org.apache.calcite.runtime.ObjectEnumeratorCursor;

import com.google.common.collect.ImmutableList;

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.util.List;
import java.util.TimeZone;

/**
 * Implementation of {@link ResultSet}
 * for the Calcite engine.
 */
public class CalciteResultSet extends AvaticaResultSet {

  /** Creates a CalciteResultSet. */
  CalciteResultSet(AvaticaStatement statement,
      CalcitePrepare.CalciteSignature calciteSignature,
      ResultSetMetaData resultSetMetaData, TimeZone timeZone,
      Meta.Frame firstFrame) throws SQLException {
    super(statement, null, calciteSignature, resultSetMetaData, timeZone, firstFrame);
  }

  @Override protected CalciteResultSet execute() throws SQLException {
    // Call driver's callback. It is permitted to throw a RuntimeException.
    CalciteConnectionImpl connection = getCalciteConnection();
    final boolean autoTemp = connection.config().autoTemp();
    Handler.ResultSink resultSink = null;
    if (autoTemp) {
      resultSink = () -> {
      };
    }
    connection.getDriver().handler.onStatementExecute(statement, resultSink);

    super.execute();
    return this;
  }

  @Override public ResultSet create(ColumnMetaData.AvaticaType elementType,
      Iterable