SortRowsDialog.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.ui.trans.steps.sort;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.util.Utils;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMetaInterface;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDialogInterface;
import org.pentaho.di.trans.step.StepMeta;
import org.pentaho.di.trans.steps.sort.SortRowsMeta;
import org.pentaho.di.ui.core.dialog.ErrorDialog;
import org.pentaho.di.ui.core.widget.CheckBoxVar;
import org.pentaho.di.ui.core.widget.ColumnInfo;
import org.pentaho.di.ui.core.widget.TableView;
import org.pentaho.di.ui.core.widget.TextVar;
import org.pentaho.di.ui.trans.step.BaseStepDialog;
import org.pentaho.di.ui.trans.step.TableItemInsertListener;

public class SortRowsDialog extends BaseStepDialog implements StepDialogInterface {
  private static Class<?> PKG = SortRowsMeta.class; // for i18n purposes, needed by Translator2!!

  private Label wlSortDir;
  private Button wbSortDir;
  private TextVar wSortDir;
  private FormData fdlSortDir, fdbSortDir, fdSortDir;

  private Label wlPrefix;
  private Text wPrefix;
  private FormData fdlPrefix, fdPrefix;

  private Label wlSortSize;
  private TextVar wSortSize;
  private FormData fdlSortSize, fdSortSize;

  private Label wlFreeMemory;
  private TextVar wFreeMemory;
  private FormData fdlFreeMemory, fdFreeMemory;

  private Label wlCompress;
  private CheckBoxVar wCompress;
  private FormData fdlCompress, fdCompress;

  private Label wlUniqueRows;
  private Button wUniqueRows;
  private FormData fdlUniqueRows, fdUniqueRows;

  private Label wlFields;
  private TableView wFields;
  private FormData fdlFields, fdFields;

  private SortRowsMeta input;
  private Map<String, Integer> inputFields;
  private ColumnInfo[] colinf;

  public SortRowsDialog( Shell parent, Object in, TransMeta transMeta, String sname ) {
    super( parent, (BaseStepMeta) in, transMeta, sname );
    input = (SortRowsMeta) in;
    inputFields = new HashMap<String, Integer>();
  }

  @Override
  public String open() {
    Shell parent = getParent();
    Display display = parent.getDisplay();

    shell = new Shell( parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN );
    props.setLook( shell );
    setShellImage( shell, input );

    ModifyListener lsMod = new ModifyListener() {
      @Override
      public void modifyText( ModifyEvent e ) {
        input.setChanged();
      }
    };
    changed = input.hasChanged();

    FormLayout formLayout = new FormLayout();
    formLayout.marginWidth = Const.FORM_MARGIN;
    formLayout.marginHeight = Const.FORM_MARGIN;

    shell.setLayout( formLayout );
    shell.setText( BaseMessages.getString( PKG, "SortRowsDialog.DialogTitle" ) );

    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;

    // Stepname line
    wlStepname = new Label( shell, SWT.RIGHT );
    wlStepname.setText( BaseMessages.getString( PKG, "System.Label.StepName" ) );
    props.setLook( wlStepname );
    fdlStepname = new FormData();
    fdlStepname.left = new FormAttachment( 0, 0 );
    fdlStepname.right = new FormAttachment( middle, -margin );
    fdlStepname.top = new FormAttachment( 0, margin );
    wlStepname.setLayoutData( fdlStepname );
    wStepname = new Text( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    wStepname.setText( stepname );
    props.setLook( wStepname );
    wStepname.addModifyListener( lsMod );
    fdStepname = new FormData();
    fdStepname.left = new FormAttachment( middle, 0 );
    fdStepname.top = new FormAttachment( 0, margin );
    fdStepname.right = new FormAttachment( 100, 0 );
    wStepname.setLayoutData( fdStepname );

    // Temp directory for sorting
    wlSortDir = new Label( shell, SWT.RIGHT );
    wlSortDir.setText( BaseMessages.getString( PKG, "SortRowsDialog.SortDir.Label" ) );
    props.setLook( wlSortDir );
    fdlSortDir = new FormData();
    fdlSortDir.left = new FormAttachment( 0, 0 );
    fdlSortDir.right = new FormAttachment( middle, -margin );
    fdlSortDir.top = new FormAttachment( wStepname, margin );
    wlSortDir.setLayoutData( fdlSortDir );

    wbSortDir = new Button( shell, SWT.PUSH | SWT.CENTER );
    props.setLook( wbSortDir );
    wbSortDir.setText( BaseMessages.getString( PKG, "System.Button.Browse" ) );
    fdbSortDir = new FormData();
    fdbSortDir.right = new FormAttachment( 100, 0 );
    fdbSortDir.top = new FormAttachment( wStepname, margin );
    wbSortDir.setLayoutData( fdbSortDir );

    wSortDir = new TextVar( transMeta, shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    wSortDir.setText( "temp" );
    props.setLook( wSortDir );
    wSortDir.addModifyListener( lsMod );
    fdSortDir = new FormData();
    fdSortDir.left = new FormAttachment( middle, 0 );
    fdSortDir.top = new FormAttachment( wStepname, margin );
    fdSortDir.right = new FormAttachment( wbSortDir, -margin );
    wSortDir.setLayoutData( fdSortDir );

    wbSortDir.addSelectionListener( new SelectionAdapter() {
      @Override
      public void widgetSelected( SelectionEvent arg0 ) {
        DirectoryDialog dd = new DirectoryDialog( shell, SWT.NONE );
        dd.setFilterPath( wSortDir.getText() );
        String dir = dd.open();
        if ( dir != null ) {
          wSortDir.setText( dir );
        }
      }
    } );

    // Whenever something changes, set the tooltip to the expanded version:
    wSortDir.addModifyListener( new ModifyListener() {
      @Override
      public void modifyText( ModifyEvent e ) {
        wSortDir.setToolTipText( transMeta.environmentSubstitute( wSortDir.getText() ) );
      }
    } );

    // Prefix of temporary file
    wlPrefix = new Label( shell, SWT.RIGHT );
    wlPrefix.setText( BaseMessages.getString( PKG, "SortRowsDialog.Prefix.Label" ) );
    props.setLook( wlPrefix );
    fdlPrefix = new FormData();
    fdlPrefix.left = new FormAttachment( 0, 0 );
    fdlPrefix.right = new FormAttachment( middle, -margin );
    fdlPrefix.top = new FormAttachment( wbSortDir, margin * 2 );
    wlPrefix.setLayoutData( fdlPrefix );
    wPrefix = new Text( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wPrefix );
    wPrefix.addModifyListener( lsMod );
    fdPrefix = new FormData();
    fdPrefix.left = new FormAttachment( middle, 0 );
    fdPrefix.top = new FormAttachment( wbSortDir, margin * 2 );
    fdPrefix.right = new FormAttachment( 100, 0 );
    wPrefix.setLayoutData( fdPrefix );
    wPrefix.setText( "srt" );

    // Maximum number of lines to keep in memory before using temporary files
    wlSortSize = new Label( shell, SWT.RIGHT );
    wlSortSize.setText( BaseMessages.getString( PKG, "SortRowsDialog.SortSize.Label" ) );
    props.setLook( wlSortSize );
    fdlSortSize = new FormData();
    fdlSortSize.left = new FormAttachment( 0, 0 );
    fdlSortSize.right = new FormAttachment( middle, -margin );
    fdlSortSize.top = new FormAttachment( wPrefix, margin * 2 );
    wlSortSize.setLayoutData( fdlSortSize );
    wSortSize = new TextVar( transMeta, shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    props.setLook( wSortSize );
    wSortSize.addModifyListener( lsMod );
    fdSortSize = new FormData();
    fdSortSize.left = new FormAttachment( middle, 0 );
    fdSortSize.top = new FormAttachment( wPrefix, margin * 2 );
    fdSortSize.right = new FormAttachment( 100, 0 );
    wSortSize.setLayoutData( fdSortSize );

    // Free Memory to keep
    wlFreeMemory = new Label( shell, SWT.RIGHT );
    wlFreeMemory.setText( BaseMessages.getString( PKG, "SortRowsDialog.FreeMemory.Label" ) );
    wlFreeMemory.setToolTipText( BaseMessages.getString( PKG, "SortRowsDialog.FreeMemory.ToolTip" ) );
    props.setLook( wlFreeMemory );
    fdlFreeMemory = new FormData();
    fdlFreeMemory.left = new FormAttachment( 0, 0 );
    fdlFreeMemory.right = new FormAttachment( middle, -margin );
    fdlFreeMemory.top = new FormAttachment( wSortSize, margin * 2 );
    wlFreeMemory.setLayoutData( fdlFreeMemory );
    wFreeMemory = new TextVar( transMeta, shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
    wFreeMemory.setToolTipText( BaseMessages.getString( PKG, "SortRowsDialog.FreeMemory.ToolTip" ) );
    props.setLook( wFreeMemory );
    wFreeMemory.addModifyListener( lsMod );
    fdFreeMemory = new FormData();
    fdFreeMemory.left = new FormAttachment( middle, 0 );
    fdFreeMemory.top = new FormAttachment( wSortSize, margin * 2 );
    fdFreeMemory.right = new FormAttachment( 100, 0 );
    wFreeMemory.setLayoutData( fdFreeMemory );

    // Using compression for temporary files?
    wlCompress = new Label( shell, SWT.RIGHT );
    wlCompress.setText( BaseMessages.getString( PKG, "SortRowsDialog.Compress.Label" ) );
    props.setLook( wlCompress );
    fdlCompress = new FormData();
    fdlCompress.left = new FormAttachment( 0, 0 );
    fdlCompress.right = new FormAttachment( middle, -margin );
    fdlCompress.top = new FormAttachment( wFreeMemory, margin * 2 );
    wlCompress.setLayoutData( fdlCompress );
    wCompress = new CheckBoxVar( transMeta, shell, SWT.CHECK, "" );
    props.setLook( wCompress );
    fdCompress = new FormData();
    fdCompress.left = new FormAttachment( middle, 0 );
    fdCompress.top = new FormAttachment( wFreeMemory, margin * 2 );
    fdCompress.right = new FormAttachment( 100, 0 );
    wCompress.setLayoutData( fdCompress );
    wCompress.addSelectionListener( new SelectionAdapter() {
      @Override
      public void widgetSelected( SelectionEvent e ) {
        log.logDetailed( "SortRowsDialog", "Selection Listener for compress: " + wCompress.getSelection() );
        input.setChanged();
      }
    } );

    // Using compression for temporary files?
    wlUniqueRows = new Label( shell, SWT.RIGHT );
    wlUniqueRows.setText( BaseMessages.getString( PKG, "SortRowsDialog.UniqueRows.Label" ) );
    props.setLook( wlUniqueRows );
    fdlUniqueRows = new FormData();
    fdlUniqueRows.left = new FormAttachment( 0, 0 );
    fdlUniqueRows.right = new FormAttachment( middle, -margin );
    fdlUniqueRows.top = new FormAttachment( wCompress, margin );
    wlUniqueRows.setLayoutData( fdlUniqueRows );
    wUniqueRows = new Button( shell, SWT.CHECK );
    wUniqueRows.setToolTipText( BaseMessages.getString( PKG, "SortRowsDialog.UniqueRows.Tooltip" ) );
    props.setLook( wUniqueRows );
    fdUniqueRows = new FormData();
    fdUniqueRows.left = new FormAttachment( middle, 0 );
    fdUniqueRows.top = new FormAttachment( wCompress, margin );
    fdUniqueRows.right = new FormAttachment( 100, 0 );
    wUniqueRows.setLayoutData( fdUniqueRows );

    wOK = new Button( shell, SWT.PUSH );
    wOK.setText( BaseMessages.getString( PKG, "System.Button.OK" ) );
    wGet = new Button( shell, SWT.PUSH );
    wGet.setText( BaseMessages.getString( PKG, "System.Button.GetFields" ) );
    wCancel = new Button( shell, SWT.PUSH );
    wCancel.setText( BaseMessages.getString( PKG, "System.Button.Cancel" ) );

    setButtonPositions( new Button[] { wOK, wCancel, wGet }, margin, null );

    // Table with fields to sort and sort direction
    wlFields = new Label( shell, SWT.NONE );
    wlFields.setText( BaseMessages.getString( PKG, "SortRowsDialog.Fields.Label" ) );
    props.setLook( wlFields );
    fdlFields = new FormData();
    fdlFields.left = new FormAttachment( 0, 0 );
    fdlFields.top = new FormAttachment( wUniqueRows, margin );
    wlFields.setLayoutData( fdlFields );

    final int FieldsRows = input.getFieldName().length;

    colinf =
      new ColumnInfo[] {
        new ColumnInfo(
          BaseMessages.getString( PKG, "SortRowsDialog.Fieldname.Column" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
          new String[] { "" }, false ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "SortRowsDialog.Ascending.Column" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
          new String[] {
            BaseMessages.getString( PKG, "System.Combo.Yes" ),
            BaseMessages.getString( PKG, "System.Combo.No" ) } ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "SortRowsDialog.CaseInsensitive.Column" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] {
            BaseMessages.getString( PKG, "System.Combo.Yes" ),
            BaseMessages.getString( PKG, "System.Combo.No" ) } ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "SortRowsDialog.CollatorDisabled.Column" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] {
            BaseMessages.getString( PKG, "System.Combo.Yes" ),
            BaseMessages.getString( PKG, "System.Combo.No" ) } ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "SortRowsDialog.CollatorStrength.Column" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] {
            BaseMessages.getString( PKG, "System.Combo.Primary" ),
            BaseMessages.getString( PKG, "System.Combo.Secondary" ),
            BaseMessages.getString( PKG, "System.Combo.Tertiary" ),
            BaseMessages.getString( PKG, "System.Combo.Identical" ) }, true ),
        new ColumnInfo(
          BaseMessages.getString( PKG, "SortRowsDialog.PreSortedField.Column" ),
          ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] {
            BaseMessages.getString( PKG, "System.Combo.Yes" ),
            BaseMessages.getString( PKG, "System.Combo.No" ) } ) };

    wFields =
      new TableView(
        transMeta, shell, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI, colinf, FieldsRows, lsMod, props );

    fdFields = new FormData();
    fdFields.left = new FormAttachment( 0, 0 );
    fdFields.top = new FormAttachment( wlFields, margin );
    fdFields.right = new FormAttachment( 100, 0 );
    fdFields.bottom = new FormAttachment( wOK, -2 * margin );
    wFields.setLayoutData( fdFields );

    //
    // Search the fields in the background

    final Runnable runnable = new Runnable() {
      @Override
      public void run() {
        StepMeta stepMeta = transMeta.findStep( stepname );
        if ( stepMeta != null ) {
          try {
            RowMetaInterface row = transMeta.getPrevStepFields( stepMeta );

            // Remember these fields...
            for ( int i = 0; i < row.size(); i++ ) {
              inputFields.put( row.getValueMeta( i ).getName(), Integer.valueOf( i ) );
            }
            setComboBoxes();
          } catch ( KettleException e ) {
            logError( BaseMessages.getString( PKG, "System.Dialog.GetFieldsFailed.Message" ) );
          }
        }
      }
    };
    new Thread( runnable ).start();

    // Add listeners
    lsOK = new Listener() {
      @Override
      public void handleEvent( Event e ) {
        ok();
      }
    };
    lsGet = new Listener() {
      @Override
      public void handleEvent( Event e ) {
        get();
      }
    };
    lsCancel = new Listener() {
      @Override
      public void handleEvent( Event e ) {
        cancel();
      }
    };

    wOK.addListener( SWT.Selection, lsOK );
    wGet.addListener( SWT.Selection, lsGet );
    wCancel.addListener( SWT.Selection, lsCancel );

    lsDef = new SelectionAdapter() {
      @Override
      public void widgetDefaultSelected( SelectionEvent e ) {
        ok();
      }
    };

    wStepname.addSelectionListener( lsDef );
    wSortDir.addSelectionListener( lsDef );
    wPrefix.addSelectionListener( lsDef );
    wSortSize.addSelectionListener( lsDef );
    wFreeMemory.addSelectionListener( lsDef );

    // Detect X or ALT-F4 or something that kills this window...
    shell.addShellListener( new ShellAdapter() {
      @Override
      public void shellClosed( ShellEvent e ) {
        cancel();
      }
    } );

    lsResize = new Listener() {
      @Override
      public void handleEvent( Event event ) {
        Point size = shell.getSize();
        wFields.setSize( size.x - 10, size.y - 50 );
        wFields.table.setSize( size.x - 10, size.y - 50 );
        wFields.redraw();
      }
    };
    shell.addListener( SWT.Resize, lsResize );

    // Set the shell size, based upon previous time...
    setSize();

    getData();
    input.setChanged( changed );

    shell.open();
    while ( !shell.isDisposed() ) {
      if ( !display.readAndDispatch() ) {
        display.sleep();
      }
    }
    return stepname;
  }

  protected void setComboBoxes() {
    // Something was changed in the row.
    //
    final Map<String, Integer> fields = new HashMap<String, Integer>();

    // Add the currentMeta fields...
    fields.putAll( inputFields );

    Set<String> keySet = fields.keySet();
    List<String> entries = new ArrayList<String>( keySet );

    String[] fieldNames = entries.toArray( new String[entries.size()] );

    Const.sortStrings( fieldNames );
    colinf[0].setComboValues( fieldNames );
  }

  /**
   * Copy information from the meta-data input to the dialog fields.
   */
  public void getData() {
    if ( input.getPrefix() != null ) {
      wPrefix.setText( input.getPrefix() );
    }
    if ( input.getDirectory() != null ) {
      wSortDir.setText( input.getDirectory() );
    }
    wSortSize.setText( Const.NVL( input.getSortSize(), "" ) );
    wFreeMemory.setText( Const.NVL( input.getFreeMemoryLimit(), "" ) );
    wCompress.setSelection( input.getCompressFiles() );
    wCompress.setVariableName( input.getCompressFilesVariable() );
    wUniqueRows.setSelection( input.isOnlyPassingUniqueRows() );

    Table table = wFields.table;
    if ( input.getFieldName().length > 0 ) {
      table.removeAll();
    }
    for ( int i = 0; i < input.getFieldName().length; i++ ) {
      TableItem ti = new TableItem( table, SWT.NONE );
      ti.setText( 0, "" + ( i + 1 ) );
      ti.setText( 1, input.getFieldName()[i] );
      ti.setText( 2, input.getAscending()[i] ? BaseMessages.getString( PKG, "System.Combo.Yes" ) : BaseMessages
        .getString( PKG, "System.Combo.No" ) );
      ti.setText( 3, input.getCaseSensitive()[i]
        ? BaseMessages.getString( PKG, "System.Combo.Yes" ) : BaseMessages.getString( PKG, "System.Combo.No" ) );
      ti.setText( 4, input.getCollatorEnabled()[i]
        ? BaseMessages.getString( PKG, "System.Combo.Yes" ) : BaseMessages.getString( PKG, "System.Combo.No" ) );
      ti.setText( 5, input.getCollatorStrength()[i] == 0
        ? BaseMessages.getString( PKG, "System.Combo.Primary" ) : Integer.toString( input.getCollatorStrength()[i] ) );
      ti.setText( 6, input.getPreSortedField()[i]
        ? BaseMessages.getString( PKG, "System.Combo.Yes" ) : BaseMessages.getString( PKG, "System.Combo.No" ) );
    }

    wFields.setRowNums();
    wFields.optWidth( true );

    wStepname.selectAll();
    wStepname.setFocus();
  }

  private void cancel() {
    stepname = null;
    input.setChanged( changed );
    dispose();
  }

  private void ok() {
    if ( Utils.isEmpty( wStepname.getText() ) ) {
      return;
    }

    stepname = wStepname.getText(); // return value

    // copy info to SortRowsMeta class (input)
    input.setPrefix( wPrefix.getText() );
    input.setDirectory( wSortDir.getText() );
    input.setSortSize( wSortSize.getText() );
    input.setFreeMemoryLimit( wFreeMemory.getText() );
    log.logDetailed( "Sort rows", "Compression is set to " + wCompress.getSelection() );
    input.setCompressFiles( wCompress.getSelection() );
    input.setCompressFilesVariable( wCompress.getVariableName() );
    input.setOnlyPassingUniqueRows( wUniqueRows.getSelection() );

    // Table table = wFields.table;
    int nrfields = wFields.nrNonEmpty();

    input.allocate( nrfields );

    //CHECKSTYLE:Indentation:OFF
    //CHECKSTYLE:LineLength:OFF
    for ( int i = 0; i < nrfields; i++ ) {
      TableItem ti = wFields.getNonEmpty( i );
      input.getFieldName()[i] = ti.getText( 1 );
      input.getAscending()[i] = Utils.isEmpty( ti.getText( 2 ) ) || BaseMessages.getString( PKG, "System.Combo.Yes" ).equalsIgnoreCase( ti.getText( 2 ) );
      input.getCaseSensitive()[i] = BaseMessages.getString( PKG, "System.Combo.Yes" ).equalsIgnoreCase( ti.getText( 3 ) );
      input.getCollatorEnabled()[i] = BaseMessages.getString( PKG, "System.Combo.Yes" ).equalsIgnoreCase( ti.getText( 4 ) );
      if ( ti.getText( 5 ) == "" ) {
        input.getCollatorStrength()[i] = Integer.parseInt( BaseMessages.getString( PKG, "System.Combo.Primary" ) );
      } else {
        input.getCollatorStrength()[i] = Integer.parseInt( ti.getText( 5 ) );
      }
      input.getPreSortedField()[i] = BaseMessages.getString( PKG, "System.Combo.Yes" ).equalsIgnoreCase( ti.getText( 6 ) );
    }

    dispose();
  }

  private void get() {
    try {
      RowMetaInterface r = transMeta.getPrevStepFields( stepname );
      if ( r != null ) {
        TableItemInsertListener insertListener = new TableItemInsertListener() {
          @Override
          public boolean tableItemInserted( TableItem tableItem, ValueMetaInterface v ) {
            tableItem.setText( 2, BaseMessages.getString( PKG, "System.Combo.Yes" ) );
            return true;
          }
        };
        BaseStepDialog
          .getFieldsFromPrevious( r, wFields, 1, new int[] { 1 }, new int[] {}, -1, -1, insertListener );
      }
    } catch ( KettleException ke ) {
      new ErrorDialog( shell, BaseMessages.getString( PKG, "System.Dialog.GetFieldsFailed.Title" ), BaseMessages
        .getString( PKG, "System.Dialog.GetFieldsFailed.Message" ), ke );
    }

  }
}