content: /*
   * Copyright (c) 2015, 2020, Oracle and/or its affiliates.
   *
   * This program is free software; you can redistribute it and/or modify it under
   * the terms of the GNU General Public License, version 2.0, as published by the
   * Free Software Foundation.
   *
   * This program is also distributed with certain software (including but not
   * limited to OpenSSL) that is licensed under separate terms, as designated in a
   * particular file or component or in included license documentation. The
   * authors of MySQL hereby grant you an additional permission to link the
   * program and your derivative works with the separately licensed software that
   * they have included with MySQL.
   *
   * Without limiting anything contained in the foregoing, this file, which is
   * part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
   * version 1.0, a copy of which can be found at
   * http://oss.oracle.com/licenses/universal-foss-exception.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
   * for more details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc.,
   * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
   */
  
  package com.mysql.cj.xdevapi;
  
  import java.util.concurrent.CompletableFuture;
  
  import com.mysql.cj.MysqlxSession;
  import com.mysql.cj.protocol.x.XMessage;
  import com.mysql.cj.xdevapi.FilterParams.RowLock;
  import com.mysql.cj.xdevapi.FilterParams.RowLockOptions;
  
  /**
   * {@link SelectStatement} implementation.
   */
  public class SelectStatementImpl extends FilterableStatement<SelectStatement, RowResult> implements SelectStatement {
      /* package private */ SelectStatementImpl(MysqlxSession mysqlxSession, String schema, String table, String... projection) {
          super(new TableFilterParams(schema, table));
          this.mysqlxSession = mysqlxSession;
          if (projection != null && projection.length > 0) {
              this.filterParams.setFields(projection);
          }
      }
  
      @Override
      protected RowResult executeStatement() {
          return this.mysqlxSession.query(this.getMessageBuilder().buildFind(this.filterParams), new StreamingRowResultBuilder(this.mysqlxSession));
      }
  
      @Override
      protected XMessage getPrepareStatementXMessage() {
          return getMessageBuilder().buildPrepareFind(this.preparedStatementId, this.filterParams);
      }
  
      @Override
      protected RowResult executePreparedStatement() {
          return this.mysqlxSession.query(this.getMessageBuilder().buildPrepareExecute(this.preparedStatementId, this.filterParams),
                  new StreamingRowResultBuilder(this.mysqlxSession));
      }
  
      public CompletableFuture<RowResult> executeAsync() {
          return this.mysqlxSession.queryAsync(getMessageBuilder().buildFind(this.filterParams), new RowResultBuilder(this.mysqlxSession));
      }
  
      @Override
      public SelectStatement groupBy(String... groupBy) {
          resetPrepareState();
          this.filterParams.setGrouping(groupBy);
          return this;
      }
  
      public SelectStatement having(String having) {
          resetPrepareState();
          this.filterParams.setGroupingCriteria(having);
          return this;
      }
  
      @Override
      public FilterParams getFilterParams() {
          return this.filterParams;
      }
  
      @Override
      public SelectStatement lockShared() {
          return lockShared(LockContention.DEFAULT);
      }
  
      @Override
      public SelectStatement lockShared(LockContention lockContention) {
          resetPrepareState();
          this.filterParams.setLock(RowLock.SHARED_LOCK);
          switch (lockContention) {
              case NOWAIT:
                  this.filterParams.setLockOption(RowLockOptions.NOWAIT);
                  break;
              case SKIP_LOCKED:
                  this.filterParams.setLockOption(RowLockOptions.SKIP_LOCKED);
                  break;
              case DEFAULT:
          }
          return this;
      }
  
      @Override
      public SelectStatement lockExclusive() {
          return lockExclusive(LockContention.DEFAULT);
      }
  
      @Override
      public SelectStatement lockExclusive(LockContention lockContention) {
          resetPrepareState();
          this.filterParams.setLock(RowLock.EXCLUSIVE_LOCK);
          switch (lockContention) {
              case NOWAIT:
                  this.filterParams.setLockOption(RowLockOptions.NOWAIT);
                  break;
              case SKIP_LOCKED:
                  this.filterParams.setLockOption(RowLockOptions.SKIP_LOCKED);
                  break;
              case DEFAULT:
          }
          return this;
      }
  }
  