RedshiftDatabaseMeta.java

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 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed 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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package org.pentaho.di.core.database;

/**
 * @author mbatchelor
 *
 */
public class RedshiftDatabaseMeta extends PostgreSQLDatabaseMeta {

  public RedshiftDatabaseMeta() {
    addExtraOption( "REDSHIFT", "tcpKeepAlive", "true" );
  }

  @Override
  public int getDefaultDatabasePort() {
    if ( getAccessType() == DatabaseMeta.TYPE_ACCESS_NATIVE ) {
      return 5439;
    }
    return -1;
  }

  @Override
  public String getDriverClass() {
    if ( getAccessType() == DatabaseMeta.TYPE_ACCESS_ODBC ) {
      return "sun.jdbc.odbc.JdbcOdbcDriver";
    } else {
      return "com.amazon.redshift.jdbc4.Driver";
    }
  }

  @Override
  public String getURL( String hostname, String port, String databaseName ) {
    if ( getAccessType() == DatabaseMeta.TYPE_ACCESS_ODBC ) {
      return "jdbc:odbc:" + databaseName;
    } else {
      return "jdbc:redshift://" + hostname + ":" + port + "/" + databaseName;
    }
  }

  @Override
  public String getExtraOptionsHelpText() {
    return "http://docs.aws.amazon.com/redshift/latest/mgmt/configure-jdbc-connection.html";
  }

  /**
   * The superclass method checks whether or not the command setFetchSize() is supported by the driver. In the case of
   * Redshift, setFetchSize() is supported, but in the case of LIMIT, the Redshift driver will enforce that the value
   * for fetch size is less than or equal to the value specified in the LIMIT clause.
   *
   * To avoid these problems, this method (and supportsSetMaxRows()) returns false
   *
   * @return false
   */
  @Override
  public boolean isFetchSizeSupported() {
    return false;
  }

  /**
   * Redshift does not recognize the JDBC "setMaxRows" parameter
   *
   * @return false
   */
  @Override
  public boolean supportsSetMaxRows() {
    return false;
  }

  @Override
  public String[] getUsedLibraries() {
    return new String[] { "RedshiftJDBC4_1.0.10.1010.jar" };
  }
}