LucidDBBulkLoaderMeta.java

/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2016 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,
 * 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.
 *
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package org.pentaho.di.trans.steps.luciddbbulkloader;

import java.util.List;

import org.pentaho.di.core.CheckResult;
import org.pentaho.di.core.CheckResultInterface;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.util.Utils;
import org.pentaho.di.core.ProvidesDatabaseConnectionInformation;
import org.pentaho.di.core.SQLStatement;
import org.pentaho.di.core.annotations.Step;
import org.pentaho.di.core.database.Database;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.exception.KettleStepException;
import org.pentaho.di.core.exception.KettleXMLException;
import org.pentaho.di.core.row.RowMeta;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMetaInterface;
import org.pentaho.di.core.variables.VariableSpace;
import org.pentaho.di.core.xml.XMLHandler;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.repository.ObjectId;
import org.pentaho.di.repository.Repository;
import org.pentaho.di.shared.SharedObjectInterface;
import org.pentaho.di.trans.DatabaseImpact;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDataInterface;
import org.pentaho.di.trans.step.StepInterface;
import org.pentaho.di.trans.step.StepMeta;
import org.pentaho.di.trans.step.StepMetaInterface;
import org.pentaho.metastore.api.IMetaStore;
import org.w3c.dom.Node;

/**
 * Here are the steps that we need to take to make streaming loading possible for LucidDB:<br>
 * <br>
 * Prerequisites:<br>
 * <br>
 * - Make sure we run on a server version >= 0.7.5<br>
 * - Create an empty FIFO directory<br>
 * <br>
 * The following steps are carried out by the step at runtime:<br>
 * <br>
 * - In the FIFO directory, create a FIFO file called {tableName}.csv (using mkfifo, LINUX ONLY FOLKS!)<br>
 * - Create a target table using standard Kettle SQL generation<br>
 * - Create a fifo server (with a certain name) on LucidDB<br>
 *
 * <pre>
 *    create or replace server fifo_server
 *    foreign data wrapper sys_file_wrapper
 * options (
 *     directory '/path/to/luciddb-0.7.5/fifo/',
 *     file_extension 'csv',
 *     with_header 'yes',
 *     num_rows_scan '0',
 *     lenient 'no');
 * </pre>
 *
 * <br>
 * - Create a bulk loader file, SQL Server style: .bcp extension<br>
 * - Execute the following SQL Command to bulk load in a separate SQL thread in the background:<br>
 *
 * <pre>
 * insert into {schemaName}.{tableName}
 * select * from {fifoServerName}."DEFAULT"."{tableName}";
 * </pre>
 *
 * <br>
 * - Write to the FIFO file called {tableName}.csv in the FIFO directory<br>
 * - At the end, close the output stream to the FIFO file<br>
 * * At the end, remove the FIFO file <br>
 *
 *
 * Created on 24-oct-2007<br>
 *
 * @author Matt Casters<br>
 */
 @Step( id = "LucidDBBulkLoader", image = "BLKL.svg",
i18nPackageName = "org.pentaho.di.trans.steps.luciddbbulkloader", name = "BaseStep.TypeLongDesc.LucidDBBulkLoader",
description = "BaseStep.TypeTooltipDesc.LucidDBBulkLoader",
categoryDescription = "i18n:org.pentaho.di.trans.step:BaseStep.Category.Deprecated" )
public class LucidDBBulkLoaderMeta extends BaseStepMeta implements StepMetaInterface,
  ProvidesDatabaseConnectionInformation {
  private static Class<?> PKG = LucidDBBulkLoaderMeta.class; // for i18n purposes, needed by Translator2!!

  /** what's the schema for the target? */
  private String schemaName;

  /** what's the table for the target? */
  private String tableName;

  /** The name of the FIFO directory to use */
  private String fifoDirectory;

  /** The name of the FIFO server to create */
  private String fifoServerName;

  /** database connection */
  private DatabaseMeta databaseMeta;

  /** Field name of the target table */
  private String[] fieldTable;

  /** Field name in the stream */
  private String[] fieldStream;

  /** flag to indicate that the format is OK for LucidDB */
  private boolean[] fieldFormatOk;

  /** Encoding to use */
  private String encoding;

  /** maximum errors */
  private int maxErrors;

  /**
   * The number of rows to buffer before passing them over to LucidDB. This number should be non-zero since we need to
   * specify the number of rows we pass.
   */
  private String bufferSize;

  public LucidDBBulkLoaderMeta() {
    super();
  }

  /**
   * @return Returns the database.
   */
  public DatabaseMeta getDatabaseMeta() {
    return databaseMeta;
  }

  /**
   * @param database
   *          The database to set.
   */
  public void setDatabaseMeta( DatabaseMeta database ) {
    this.databaseMeta = database;
  }

  /**
   * @return Returns the tableName.
   */
  public String getTableName() {
    return tableName;
  }

  /**
   * @param tableName
   *          The tableName to set.
   */
  public void setTableName( String tableName ) {
    this.tableName = tableName;
  }

  /**
   * @return Returns the fieldTable.
   */
  public String[] getFieldTable() {
    return fieldTable;
  }

  /**
   * @param fieldTable
   *          The fieldTable to set.
   */
  public void setFieldTable( String[] fieldTable ) {
    this.fieldTable = fieldTable;
  }

  /**
   * @return Returns the fieldStream.
   */
  public String[] getFieldStream() {
    return fieldStream;
  }

  /**
   * @param fieldStream
   *          The fieldStream to set.
   */
  public void setFieldStream( String[] fieldStream ) {
    this.fieldStream = fieldStream;
  }

  public void loadXML( Node stepnode, List<DatabaseMeta> databases, IMetaStore metaStore ) throws KettleXMLException {
    readData( stepnode, databases );
  }

  public void allocate( int nrvalues ) {
    fieldTable = new String[nrvalues];
    fieldStream = new String[nrvalues];
    fieldFormatOk = new boolean[nrvalues];
  }

  public Object clone() {
    LucidDBBulkLoaderMeta retval = (LucidDBBulkLoaderMeta) super.clone();
    int nrvalues = fieldTable.length;

    retval.allocate( nrvalues );

    for ( int i = 0; i < nrvalues; i++ ) {
      retval.fieldTable[i] = fieldTable[i];
      retval.fieldStream[i] = fieldStream[i];
    }
    return retval;
  }

  private void readData( Node stepnode, List<? extends SharedObjectInterface> databases ) throws KettleXMLException {
    try {
      String con = XMLHandler.getTagValue( stepnode, "connection" );
      databaseMeta = DatabaseMeta.findDatabase( databases, con );

      String serror = XMLHandler.getTagValue( stepnode, "errors" );
      maxErrors = Const.toInt( serror, 0 ); // default to 0.

      bufferSize = XMLHandler.getTagValue( stepnode, "buffer_size" );

      schemaName = XMLHandler.getTagValue( stepnode, "schema" );
      tableName = XMLHandler.getTagValue( stepnode, "table" );

      fifoDirectory = XMLHandler.getTagValue( stepnode, "fifo_directory" );
      fifoServerName = XMLHandler.getTagValue( stepnode, "fifo_server_name" );

      encoding = XMLHandler.getTagValue( stepnode, "encoding" );

      int nrvalues = XMLHandler.countNodes( stepnode, "mapping" );
      allocate( nrvalues );

      for ( int i = 0; i < nrvalues; i++ ) {
        Node vnode = XMLHandler.getSubNodeByNr( stepnode, "mapping", i );

        fieldTable[i] = XMLHandler.getTagValue( vnode, "stream_name" );
        fieldStream[i] = XMLHandler.getTagValue( vnode, "field_name" );
        if ( fieldStream[i] == null ) {
          fieldStream[i] = fieldTable[i]; // default: the same name!
        }
        fieldFormatOk[i] = "Y".equalsIgnoreCase( XMLHandler.getTagValue( vnode, "field_format_ok" ) );
      }
    } catch ( Exception e ) {
      throw new KettleXMLException( BaseMessages.getString(
        PKG, "LucidDBBulkLoaderMeta.Exception.UnableToReadStepInfoFromXML" ), e );
    }
  }

  public void setDefault() {
    fieldTable = null;
    databaseMeta = null;
    maxErrors = 0;
    bufferSize = "100000";
    schemaName = "";
    tableName = BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.DefaultTableName" );
    encoding = "";
    fifoDirectory = "/tmp/fifo/";

    allocate( 0 );
  }

  public String getXML() {
    StringBuffer retval = new StringBuffer( 300 );

    retval
      .append( "    " ).append(
        XMLHandler.addTagValue( "connection", databaseMeta == null ? "" : databaseMeta.getName() ) );
    retval.append( "    " ).append( XMLHandler.addTagValue( "errors", maxErrors ) );
    retval.append( "    " ).append( XMLHandler.addTagValue( "buffer_size", bufferSize ) );
    retval.append( "    " ).append( XMLHandler.addTagValue( "schema", schemaName ) );
    retval.append( "    " ).append( XMLHandler.addTagValue( "table", tableName ) );
    retval.append( "    " ).append( XMLHandler.addTagValue( "encoding", encoding ) );

    retval.append( "    " ).append( XMLHandler.addTagValue( "fifo_directory", fifoDirectory ) );
    retval.append( "    " ).append( XMLHandler.addTagValue( "fifo_server_name", fifoServerName ) );

    for ( int i = 0; i < fieldTable.length; i++ ) {
      retval.append( "      <mapping>" ).append( Const.CR );
      retval.append( "        " ).append( XMLHandler.addTagValue( "stream_name", fieldTable[i] ) );
      retval.append( "        " ).append( XMLHandler.addTagValue( "field_name", fieldStream[i] ) );
      retval.append( "        " ).append( XMLHandler.addTagValue( "field_format_ok", fieldFormatOk[i] ) );
      retval.append( "      </mapping>" ).append( Const.CR );
    }

    return retval.toString();
  }

  public void readRep( Repository rep, IMetaStore metaStore, ObjectId id_step, List<DatabaseMeta> databases ) throws KettleException {
    try {
      databaseMeta = rep.loadDatabaseMetaFromStepAttribute( id_step, "id_connection", databases );
      maxErrors = (int) rep.getStepAttributeInteger( id_step, "errors" );
      bufferSize = rep.getStepAttributeString( id_step, "buffer_size" );
      schemaName = rep.getStepAttributeString( id_step, "schema" );
      tableName = rep.getStepAttributeString( id_step, "table" );
      encoding = rep.getStepAttributeString( id_step, "encoding" );
      fifoDirectory = rep.getStepAttributeString( id_step, "fifo_directory" );
      fifoServerName = rep.getStepAttributeString( id_step, "fifo_server_name" );

      int nrvalues = rep.countNrStepAttributes( id_step, "stream_name" );

      allocate( nrvalues );

      for ( int i = 0; i < nrvalues; i++ ) {
        fieldTable[i] = rep.getStepAttributeString( id_step, i, "stream_name" );
        fieldStream[i] = rep.getStepAttributeString( id_step, i, "field_name" );
        if ( fieldStream[i] == null ) {
          fieldStream[i] = fieldTable[i];
        }
        fieldFormatOk[i] = rep.getStepAttributeBoolean( id_step, i, "field_format_ok" );
      }
    } catch ( Exception e ) {
      throw new KettleException( BaseMessages.getString(
        PKG, "LucidDBBulkLoaderMeta.Exception.UnexpectedErrorReadingStepInfoFromRepository" ), e );
    }
  }

  public void saveRep( Repository rep, IMetaStore metaStore, ObjectId id_transformation, ObjectId id_step ) throws KettleException {
    try {
      rep.saveDatabaseMetaStepAttribute( id_transformation, id_step, "id_connection", databaseMeta );
      rep.saveStepAttribute( id_transformation, id_step, "errors", maxErrors );
      rep.saveStepAttribute( id_transformation, id_step, "buffer_size", bufferSize );
      rep.saveStepAttribute( id_transformation, id_step, "schema", schemaName );
      rep.saveStepAttribute( id_transformation, id_step, "table", tableName );

      rep.saveStepAttribute( id_transformation, id_step, "encoding", encoding );

      rep.saveStepAttribute( id_transformation, id_step, "fifo_directory", fifoDirectory );
      rep.saveStepAttribute( id_transformation, id_step, "fifo_server_name", fifoServerName );

      for ( int i = 0; i < fieldTable.length; i++ ) {
        rep.saveStepAttribute( id_transformation, id_step, i, "stream_name", fieldTable[i] );
        rep.saveStepAttribute( id_transformation, id_step, i, "field_name", fieldStream[i] );
        rep.saveStepAttribute( id_transformation, id_step, i, "field_format_ok", fieldFormatOk[i] );
      }

      // Also, save the step-database relationship!
      if ( databaseMeta != null ) {
        rep.insertStepDatabase( id_transformation, id_step, databaseMeta.getObjectId() );
      }
    } catch ( Exception e ) {
      throw new KettleException( BaseMessages.getString(
        PKG, "LucidDBBulkLoaderMeta.Exception.UnableToSaveStepInfoToRepository" )
        + id_step, e );
    }
  }

  public void getFields( RowMetaInterface rowMeta, String origin, RowMetaInterface[] info, StepMeta nextStep,
    VariableSpace space, Repository repository, IMetaStore metaStore ) throws KettleStepException {
    // Default: nothing changes to rowMeta
  }

  public void check( List<CheckResultInterface> remarks, TransMeta transMeta, StepMeta stepMeta,
    RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info, VariableSpace space,
    Repository repository, IMetaStore metaStore ) {
    CheckResult cr;
    String error_message = "";

    if ( databaseMeta != null ) {
      Database db = new Database( loggingObject, databaseMeta );
      db.shareVariablesWith( transMeta );
      try {
        db.connect();

        if ( !Utils.isEmpty( tableName ) ) {
          cr =
            new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
              PKG, "LucidDBBulkLoaderMeta.CheckResult.TableNameOK" ), stepMeta );
          remarks.add( cr );

          boolean first = true;
          boolean error_found = false;
          error_message = "";

          // Check fields in table
          String schemaTable =
            databaseMeta.getQuotedSchemaTableCombination(
              transMeta.environmentSubstitute( schemaName ), transMeta.environmentSubstitute( tableName ) );
          RowMetaInterface r = db.getTableFields( schemaTable );
          if ( r != null ) {
            cr =
              new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
                PKG, "LucidDBBulkLoaderMeta.CheckResult.TableExists" ), stepMeta );
            remarks.add( cr );

            // How about the fields to insert/dateMask in the table?
            first = true;
            error_found = false;
            error_message = "";

            for ( int i = 0; i < fieldTable.length; i++ ) {
              String field = fieldTable[i];

              ValueMetaInterface v = r.searchValueMeta( field );
              if ( v == null ) {
                if ( first ) {
                  first = false;
                  error_message +=
                    BaseMessages.getString(
                      PKG, "LucidDBBulkLoaderMeta.CheckResult.MissingFieldsToLoadInTargetTable" )
                      + Const.CR;
                }
                error_found = true;
                error_message += "\t\t" + field + Const.CR;
              }
            }
            if ( error_found ) {
              cr = new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta );
            } else {
              cr =
                new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
                  PKG, "LucidDBBulkLoaderMeta.CheckResult.AllFieldsFoundInTargetTable" ), stepMeta );
            }
            remarks.add( cr );
          } else {
            error_message =
              BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.CheckResult.CouldNotReadTableInfo" );
            cr = new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta );
            remarks.add( cr );
          }
        }

        // Look up fields in the input stream <prev>
        if ( prev != null && prev.size() > 0 ) {
          cr =
            new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
              PKG, "LucidDBBulkLoaderMeta.CheckResult.StepReceivingDatas", prev.size() + "" ), stepMeta );
          remarks.add( cr );

          boolean first = true;
          error_message = "";
          boolean error_found = false;

          for ( int i = 0; i < fieldStream.length; i++ ) {
            ValueMetaInterface v = prev.searchValueMeta( fieldStream[i] );
            if ( v == null ) {
              if ( first ) {
                first = false;
                error_message +=
                  BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.CheckResult.MissingFieldsInInput" )
                    + Const.CR;
              }
              error_found = true;
              error_message += "\t\t" + fieldStream[i] + Const.CR;
            }
          }
          if ( error_found ) {
            cr = new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta );
          } else {
            cr =
              new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
                PKG, "LucidDBBulkLoaderMeta.CheckResult.AllFieldsFoundInInput" ), stepMeta );
          }
          remarks.add( cr );
        } else {
          error_message =
            BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.CheckResult.MissingFieldsInInput3" ) + Const.CR;
          cr = new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta );
          remarks.add( cr );
        }
      } catch ( KettleException e ) {
        error_message =
          BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.CheckResult.DatabaseErrorOccurred" )
            + e.getMessage();
        cr = new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta );
        remarks.add( cr );
      } finally {
        db.disconnect();
      }
    } else {
      error_message = BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.CheckResult.InvalidConnection" );
      cr = new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, error_message, stepMeta );
      remarks.add( cr );
    }

    // See if we have input streams leading to this step!
    if ( input.length > 0 ) {
      cr =
        new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
          PKG, "LucidDBBulkLoaderMeta.CheckResult.StepReceivingInfoFromOtherSteps" ), stepMeta );
      remarks.add( cr );
    } else {
      cr =
        new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, BaseMessages.getString(
          PKG, "LucidDBBulkLoaderMeta.CheckResult.NoInputError" ), stepMeta );
      remarks.add( cr );
    }
  }

  public SQLStatement getSQLStatements( TransMeta transMeta, StepMeta stepMeta, RowMetaInterface prev,
    Repository repository, IMetaStore metaStore ) throws KettleStepException {
    SQLStatement retval = new SQLStatement( stepMeta.getName(), databaseMeta, null ); // default: nothing to do!

    if ( databaseMeta != null ) {
      if ( prev != null && prev.size() > 0 ) {
        // Copy the row
        RowMetaInterface tableFields = new RowMeta();

        // Now change the field names
        for ( int i = 0; i < fieldTable.length; i++ ) {
          ValueMetaInterface v = prev.searchValueMeta( fieldStream[i] );
          if ( v != null ) {
            ValueMetaInterface tableField = v.clone();
            tableField.setName( fieldTable[i] );
            tableFields.addValueMeta( tableField );
          } else {
            throw new KettleStepException( "Unable to find field [" + fieldStream[i] + "] in the input rows" );
          }
        }

        if ( !Utils.isEmpty( tableName ) ) {
          Database db = new Database( loggingObject, databaseMeta );
          db.shareVariablesWith( transMeta );
          try {
            db.connect();

            String schemaTable =
              databaseMeta.getQuotedSchemaTableCombination(
                transMeta.environmentSubstitute( schemaName ), transMeta.environmentSubstitute( tableName ) );
            String sql = db.getDDL( schemaTable, tableFields, null, false, null, true );

            if ( Utils.isEmpty( sql ) ) {
              retval.setSQL( null );
            } else {
              retval.setSQL( sql );
            }
          } catch ( KettleException e ) {
            retval.setError( BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.GetSQL.ErrorOccurred" )
              + e.getMessage() );
          }
        } else {
          retval
            .setError( BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.GetSQL.NoTableDefinedOnConnection" ) );
        }
      } else {
        retval.setError( BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.GetSQL.NotReceivingAnyFields" ) );
      }
    } else {
      retval.setError( BaseMessages.getString( PKG, "LucidDBBulkLoaderMeta.GetSQL.NoConnectionDefined" ) );
    }

    return retval;
  }

  public void analyseImpact( List<DatabaseImpact> impact, TransMeta transMeta, StepMeta stepMeta,
    RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info, Repository repository,
    IMetaStore metaStore ) throws KettleStepException {
    if ( prev != null ) {
      /* DEBUG CHECK THIS */
      // Insert dateMask fields : read/write
      for ( int i = 0; i < fieldTable.length; i++ ) {
        ValueMetaInterface v = prev.searchValueMeta( fieldStream[i] );

        DatabaseImpact ii =
          new DatabaseImpact(
            DatabaseImpact.TYPE_IMPACT_READ_WRITE, transMeta.getName(), stepMeta.getName(), databaseMeta
              .getDatabaseName(), transMeta.environmentSubstitute( tableName ), fieldTable[i],
            fieldStream[i], v != null ? v.getOrigin() : "?", "", "Type = " + v.toStringMeta() );
        impact.add( ii );
      }
    }
  }

  public StepInterface getStep( StepMeta stepMeta, StepDataInterface stepDataInterface, int cnr,
    TransMeta transMeta, Trans trans ) {
    return new LucidDBBulkLoader( stepMeta, stepDataInterface, cnr, transMeta, trans );
  }

  public StepDataInterface getStepData() {
    return new LucidDBBulkLoaderData();
  }

  public DatabaseMeta[] getUsedDatabaseConnections() {
    if ( databaseMeta != null ) {
      return new DatabaseMeta[] { databaseMeta };
    } else {
      return super.getUsedDatabaseConnections();
    }
  }

  public RowMetaInterface getRequiredFields( VariableSpace space ) throws KettleException {
    String realTableName = space.environmentSubstitute( tableName );
    String realSchemaName = space.environmentSubstitute( schemaName );

    if ( databaseMeta != null ) {
      Database db = new Database( loggingObject, databaseMeta );
      try {
        db.connect();

        if ( !Utils.isEmpty( realTableName ) ) {
          String schemaTable = databaseMeta.getQuotedSchemaTableCombination( realSchemaName, realTableName );

          // Check if this table exists...
          if ( db.checkTableExists( schemaTable ) ) {
            return db.getTableFields( schemaTable );
          } else {
            throw new KettleException( BaseMessages.getString(
              PKG, "LucidDBBulkLoaderMeta.Exception.TableNotFound" ) );
          }
        } else {
          throw new KettleException( BaseMessages.getString(
            PKG, "LucidDBBulkLoaderMeta.Exception.TableNotSpecified" ) );
        }
      } catch ( Exception e ) {
        throw new KettleException( BaseMessages.getString(
          PKG, "LucidDBBulkLoaderMeta.Exception.ErrorGettingFields" ), e );
      } finally {
        db.disconnect();
      }
    } else {
      throw new KettleException( BaseMessages.getString(
        PKG, "LucidDBBulkLoaderMeta.Exception.ConnectionNotDefined" ) );
    }

  }

  /**
   * @return the schemaName
   */
  public String getSchemaName() {
    return schemaName;
  }

  /**
   * @param schemaName
   *          the schemaName to set
   */
  public void setSchemaName( String schemaName ) {
    this.schemaName = schemaName;
  }

  public String getEncoding() {
    return encoding;
  }

  public void setEncoding( String encoding ) {
    this.encoding = encoding;
  }

  public String getDelimiter() {
    return ",";
  }

  public String getEnclosure() {
    return "\"";
  }

  public int getMaxErrors() {
    return maxErrors;
  }

  public void setMaxErrors( int maxErrors ) {
    this.maxErrors = maxErrors;
  }

  /**
   * @return the bufferSize
   */
  public String getBufferSize() {
    return bufferSize;
  }

  /**
   * @param bufferSize
   *          the bufferSize to set
   */
  public void setBufferSize( String bufferSize ) {
    this.bufferSize = bufferSize;
  }

  /**
   * @return the fieldFormatOk
   */
  public boolean[] getFieldFormatOk() {
    return fieldFormatOk;
  }

  /**
   * @param fieldFormatOk
   *          the fieldFormatOk to set
   */
  public void setFieldFormatOk( boolean[] fieldFormatOk ) {
    this.fieldFormatOk = fieldFormatOk;
  }

  /**
   * @return the fifoServerName
   */
  public String getFifoServerName() {
    return fifoServerName;
  }

  /**
   * @param fifoServerName
   *          the fifoServerName to set
   */
  public void setFifoServerName( String fifoServerName ) {
    this.fifoServerName = fifoServerName;
  }

  /**
   * @return the fifoDirectory
   */
  public String getFifoDirectory() {
    return fifoDirectory;
  }

  /**
   * @param fifoDirectory
   *          the fifoDirectory to set
   */
  public void setFifoDirectory( String fifoDirectory ) {
    this.fifoDirectory = fifoDirectory;
  }

  @Override
  public String getMissingDatabaseConnectionInformationMessage() {
    // TODO Auto-generated method stub
    return null;
  }

}