Java tutorial
package com.atolcd.pentaho.di.ui.trans.steps.gisgroupby; /* * #%L * Pentaho Data Integrator GIS Plugin * %% * Copyright (C) 2015 Atol CD * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * 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 Lesser Public License for more details. * * You should have received a copy of the GNU General Lesser Public * License along with this program. If not, see * <http://www.gnu.org/licenses/lgpl-3.0.html>. * #L% */ import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.MessageDialogWithToggle; 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.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.TableItem; import org.eclipse.swt.widgets.Text; import org.pentaho.di.core.Const; import org.pentaho.di.core.exception.KettleException; import org.pentaho.di.core.row.RowMetaInterface; 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.ui.core.dialog.ErrorDialog; import org.pentaho.di.ui.core.gui.GUIResource; 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 com.atolcd.pentaho.di.trans.steps.gisgroupby.GisGroupByMeta; public class GisGroupByDialog extends BaseStepDialog implements StepDialogInterface { private static Class<?> PKG = GisGroupByMeta.class; public static final String STRING_SORT_WARNING_PARAMETER = "GroupSortWarning"; private Label wlGroup; private TableView wGroup; private FormData fdlGroup, fdGroup; private Label wlAgg; private TableView wAgg; private FormData fdlAgg, fdAgg; private Label wlAllRows; private Button wAllRows; private FormData fdlAllRows, fdAllRows; 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 wlAddLineNr; private Button wAddLineNr; private FormData fdlAddLineNr, fdAddLineNr; private Label wlLineNrField; private Text wLineNrField; private FormData fdlLineNrField, fdLineNrField; private Label wlAlwaysAddResult; private Button wAlwaysAddResult; private FormData fdlAlwaysAddResult, fdAlwaysAddResult; private Button wGet, wGetAgg; private FormData fdGet, fdGetAgg; private Listener lsGet, lsGetAgg; private GisGroupByMeta input; private boolean backupAllRows; private ColumnInfo[] ciKey; private ColumnInfo[] ciReturn; private Map<String, Integer> inputFields; public GisGroupByDialog(Shell parent, Object in, TransMeta transMeta, String sname) { super(parent, (BaseStepMeta) in, transMeta, sname); input = (GisGroupByMeta) in; inputFields = new HashMap<String, Integer>(); } 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() { public void modifyText(ModifyEvent e) { input.setChanged(); } }; backupChanged = input.hasChanged(); backupAllRows = input.passAllRows(); FormLayout formLayout = new FormLayout(); formLayout.marginWidth = Const.FORM_MARGIN; formLayout.marginHeight = Const.FORM_MARGIN; shell.setLayout(formLayout); shell.setText(BaseMessages.getString(PKG, "GroupByDialog.Shell.Title")); int middle = props.getMiddlePct(); int margin = Const.MARGIN; // Stepname line wlStepname = new Label(shell, SWT.RIGHT); wlStepname.setText(BaseMessages.getString(PKG, "GroupByDialog.Stepname.Label")); 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); // Include all rows? wlAllRows = new Label(shell, SWT.RIGHT); wlAllRows.setText(BaseMessages.getString(PKG, "GroupByDialog.AllRows.Label")); props.setLook(wlAllRows); fdlAllRows = new FormData(); fdlAllRows.left = new FormAttachment(0, 0); fdlAllRows.top = new FormAttachment(wStepname, margin); fdlAllRows.right = new FormAttachment(middle, -margin); wlAllRows.setLayoutData(fdlAllRows); wAllRows = new Button(shell, SWT.CHECK); props.setLook(wAllRows); fdAllRows = new FormData(); fdAllRows.left = new FormAttachment(middle, 0); fdAllRows.top = new FormAttachment(wStepname, margin); fdAllRows.right = new FormAttachment(100, 0); wAllRows.setLayoutData(fdAllRows); wAllRows.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { input.setPassAllRows(!input.passAllRows()); input.setChanged(); setFlags(); } }); wlSortDir = new Label(shell, SWT.RIGHT); wlSortDir.setText(BaseMessages.getString(PKG, "GroupByDialog.TempDir.Label")); props.setLook(wlSortDir); fdlSortDir = new FormData(); fdlSortDir.left = new FormAttachment(0, 0); fdlSortDir.right = new FormAttachment(middle, -margin); fdlSortDir.top = new FormAttachment(wAllRows, margin); wlSortDir.setLayoutData(fdlSortDir); wbSortDir = new Button(shell, SWT.PUSH | SWT.CENTER); props.setLook(wbSortDir); wbSortDir.setText(BaseMessages.getString(PKG, "GroupByDialog.Browse.Button")); fdbSortDir = new FormData(); fdbSortDir.right = new FormAttachment(100, 0); fdbSortDir.top = new FormAttachment(wAllRows, margin); wbSortDir.setLayoutData(fdbSortDir); wSortDir = new TextVar(transMeta, shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER); props.setLook(wSortDir); wSortDir.addModifyListener(lsMod); fdSortDir = new FormData(); fdSortDir.left = new FormAttachment(middle, 0); fdSortDir.top = new FormAttachment(wAllRows, margin); fdSortDir.right = new FormAttachment(wbSortDir, -margin); wSortDir.setLayoutData(fdSortDir); wbSortDir.addSelectionListener(new SelectionAdapter() { 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() { public void modifyText(ModifyEvent e) { wSortDir.setToolTipText(transMeta.environmentSubstitute(wSortDir.getText())); } }); // Prefix line... wlPrefix = new Label(shell, SWT.RIGHT); wlPrefix.setText(BaseMessages.getString(PKG, "GroupByDialog.FilePrefix.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); // Include all rows? wlAddLineNr = new Label(shell, SWT.RIGHT); wlAddLineNr.setText(BaseMessages.getString(PKG, "GroupByDialog.AddLineNr.Label")); props.setLook(wlAddLineNr); fdlAddLineNr = new FormData(); fdlAddLineNr.left = new FormAttachment(0, 0); fdlAddLineNr.top = new FormAttachment(wPrefix, margin); fdlAddLineNr.right = new FormAttachment(middle, -margin); wlAddLineNr.setLayoutData(fdlAddLineNr); wAddLineNr = new Button(shell, SWT.CHECK); props.setLook(wAddLineNr); fdAddLineNr = new FormData(); fdAddLineNr.left = new FormAttachment(middle, 0); fdAddLineNr.top = new FormAttachment(wPrefix, margin); fdAddLineNr.right = new FormAttachment(100, 0); wAddLineNr.setLayoutData(fdAddLineNr); wAddLineNr.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { input.setAddingLineNrInGroup(!input.isAddingLineNrInGroup()); input.setChanged(); setFlags(); } }); // LineNrField line... wlLineNrField = new Label(shell, SWT.RIGHT); wlLineNrField.setText(BaseMessages.getString(PKG, "GroupByDialog.LineNrField.Label")); props.setLook(wlLineNrField); fdlLineNrField = new FormData(); fdlLineNrField.left = new FormAttachment(0, 0); fdlLineNrField.right = new FormAttachment(middle, -margin); fdlLineNrField.top = new FormAttachment(wAddLineNr, margin); wlLineNrField.setLayoutData(fdlLineNrField); wLineNrField = new Text(shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER); props.setLook(wLineNrField); wLineNrField.addModifyListener(lsMod); fdLineNrField = new FormData(); fdLineNrField.left = new FormAttachment(middle, 0); fdLineNrField.top = new FormAttachment(wAddLineNr, margin); fdLineNrField.right = new FormAttachment(100, 0); wLineNrField.setLayoutData(fdLineNrField); // Always pass a result rows as output // wlAlwaysAddResult = new Label(shell, SWT.RIGHT); wlAlwaysAddResult.setText(BaseMessages.getString(PKG, "GroupByDialog.AlwaysAddResult.Label")); wlAlwaysAddResult.setToolTipText(BaseMessages.getString(PKG, "GroupByDialog.AlwaysAddResult.ToolTip")); props.setLook(wlAlwaysAddResult); fdlAlwaysAddResult = new FormData(); fdlAlwaysAddResult.left = new FormAttachment(0, 0); fdlAlwaysAddResult.top = new FormAttachment(wLineNrField, margin); fdlAlwaysAddResult.right = new FormAttachment(middle, -margin); wlAlwaysAddResult.setLayoutData(fdlAlwaysAddResult); wAlwaysAddResult = new Button(shell, SWT.CHECK); wAlwaysAddResult.setToolTipText(BaseMessages.getString(PKG, "GroupByDialog.AlwaysAddResult.ToolTip")); props.setLook(wAlwaysAddResult); fdAlwaysAddResult = new FormData(); fdAlwaysAddResult.left = new FormAttachment(middle, 0); fdAlwaysAddResult.top = new FormAttachment(wLineNrField, margin); fdAlwaysAddResult.right = new FormAttachment(100, 0); wAlwaysAddResult.setLayoutData(fdAlwaysAddResult); wlGroup = new Label(shell, SWT.NONE); wlGroup.setText(BaseMessages.getString(PKG, "GroupByDialog.Group.Label")); props.setLook(wlGroup); fdlGroup = new FormData(); fdlGroup.left = new FormAttachment(0, 0); fdlGroup.top = new FormAttachment(wAlwaysAddResult, margin); wlGroup.setLayoutData(fdlGroup); int nrKeyCols = 1; int nrKeyRows = (input.getGroupField() != null ? input.getGroupField().length : 1); ciKey = new ColumnInfo[nrKeyCols]; ciKey[0] = new ColumnInfo(BaseMessages.getString(PKG, "GroupByDialog.ColumnInfo.GroupField"), ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] { "" }, false); wGroup = new TableView(transMeta, shell, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL, ciKey, nrKeyRows, lsMod, props); wGet = new Button(shell, SWT.PUSH); wGet.setText(BaseMessages.getString(PKG, "GroupByDialog.GetFields.Button")); fdGet = new FormData(); fdGet.top = new FormAttachment(wlGroup, margin); fdGet.right = new FormAttachment(100, 0); wGet.setLayoutData(fdGet); fdGroup = new FormData(); fdGroup.left = new FormAttachment(0, 0); fdGroup.top = new FormAttachment(wlGroup, margin); fdGroup.right = new FormAttachment(wGet, -margin); fdGroup.bottom = new FormAttachment(45, 0); wGroup.setLayoutData(fdGroup); // THE Aggregate fields wlAgg = new Label(shell, SWT.NONE); wlAgg.setText(BaseMessages.getString(PKG, "GroupByDialog.Aggregates.Label")); props.setLook(wlAgg); fdlAgg = new FormData(); fdlAgg.left = new FormAttachment(0, 0); fdlAgg.top = new FormAttachment(wGroup, margin); wlAgg.setLayoutData(fdlAgg); int UpInsCols = 4; int UpInsRows = (input.getAggregateField() != null ? input.getAggregateField().length : 1); ciReturn = new ColumnInfo[UpInsCols]; ciReturn[0] = new ColumnInfo(BaseMessages.getString(PKG, "GroupByDialog.ColumnInfo.Name"), ColumnInfo.COLUMN_TYPE_TEXT, false); ciReturn[1] = new ColumnInfo(BaseMessages.getString(PKG, "GroupByDialog.ColumnInfo.Subject"), ColumnInfo.COLUMN_TYPE_CCOMBO, new String[] { "" }, false); ciReturn[2] = new ColumnInfo(BaseMessages.getString(PKG, "GroupByDialog.ColumnInfo.Type"), ColumnInfo.COLUMN_TYPE_CCOMBO, GisGroupByMeta.typeGroupLongDesc); ciReturn[3] = new ColumnInfo(BaseMessages.getString(PKG, "GroupByDialog.ColumnInfo.Value"), ColumnInfo.COLUMN_TYPE_TEXT, false); ciReturn[3].setToolTip(BaseMessages.getString(PKG, "GroupByDialog.ColumnInfo.Value.Tooltip")); ciReturn[3].setUsingVariables(true); wAgg = new TableView(transMeta, shell, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL, ciReturn, UpInsRows, lsMod, props); wGetAgg = new Button(shell, SWT.PUSH); wGetAgg.setText(BaseMessages.getString(PKG, "GroupByDialog.GetLookupFields.Button")); fdGetAgg = new FormData(); fdGetAgg.top = new FormAttachment(wlAgg, margin); fdGetAgg.right = new FormAttachment(100, 0); wGetAgg.setLayoutData(fdGetAgg); // // Search the fields in the background final Runnable runnable = new Runnable() { 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(); // THE BUTTONS wOK = new Button(shell, SWT.PUSH); wOK.setText(BaseMessages.getString(PKG, "System.Button.OK")); wCancel = new Button(shell, SWT.PUSH); wCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel")); setButtonPositions(new Button[] { wOK, wCancel }, margin, null); fdAgg = new FormData(); fdAgg.left = new FormAttachment(0, 0); fdAgg.top = new FormAttachment(wlAgg, margin); fdAgg.right = new FormAttachment(wGetAgg, -margin); fdAgg.bottom = new FormAttachment(wOK, -margin); wAgg.setLayoutData(fdAgg); // Add listeners lsOK = new Listener() { public void handleEvent(Event e) { ok(); } }; lsGet = new Listener() { public void handleEvent(Event e) { get(); } }; lsGetAgg = new Listener() { public void handleEvent(Event e) { getAgg(); } }; lsCancel = new Listener() { public void handleEvent(Event e) { cancel(); } }; wOK.addListener(SWT.Selection, lsOK); wGet.addListener(SWT.Selection, lsGet); wGetAgg.addListener(SWT.Selection, lsGetAgg); wCancel.addListener(SWT.Selection, lsCancel); lsDef = new SelectionAdapter() { public void widgetDefaultSelected(SelectionEvent e) { ok(); } }; wStepname.addSelectionListener(lsDef); // Detect X or ALT-F4 or something that kills this window... shell.addShellListener(new ShellAdapter() { public void shellClosed(ShellEvent e) { cancel(); } }); // Set the shell size, based upon previous time... setSize(); getData(); input.setChanged(backupChanged); 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); ciKey[0].setComboValues(fieldNames); ciReturn[1].setComboValues(fieldNames); } public void setFlags() { wlSortDir.setEnabled(wAllRows.getSelection()); wbSortDir.setEnabled(wAllRows.getSelection()); wSortDir.setEnabled(wAllRows.getSelection()); wlPrefix.setEnabled(wAllRows.getSelection()); wPrefix.setEnabled(wAllRows.getSelection()); wlAddLineNr.setEnabled(wAllRows.getSelection()); wAddLineNr.setEnabled(wAllRows.getSelection()); wlLineNrField.setEnabled(wAllRows.getSelection() && wAddLineNr.getSelection()); wLineNrField.setEnabled(wAllRows.getSelection() && wAddLineNr.getSelection()); } /** * Copy information from the meta-data input to the dialog fields. */ public void getData() { logDebug(BaseMessages.getString(PKG, "GroupByDialog.Log.GettingKeyInfo")); wAllRows.setSelection(input.passAllRows()); if (input.getPrefix() != null) { wPrefix.setText(input.getPrefix()); } if (input.getDirectory() != null) { wSortDir.setText(input.getDirectory()); } wAddLineNr.setSelection(input.isAddingLineNrInGroup()); if (input.getLineNrInGroupField() != null) { wLineNrField.setText(input.getLineNrInGroupField()); } wAlwaysAddResult.setSelection(input.isAlwaysGivingBackOneRow()); if (input.getGroupField() != null) { for (int i = 0; i < input.getGroupField().length; i++) { TableItem item = wGroup.table.getItem(i); if (input.getGroupField()[i] != null) { item.setText(1, input.getGroupField()[i]); } } } if (input.getAggregateField() != null) { for (int i = 0; i < input.getAggregateField().length; i++) { TableItem item = wAgg.table.getItem(i); if (input.getAggregateField()[i] != null) { item.setText(1, input.getAggregateField()[i]); } if (input.getSubjectField()[i] != null) { item.setText(2, input.getSubjectField()[i]); } item.setText(3, GisGroupByMeta.getTypeDescLong(input.getAggregateType()[i])); if (input.getValueField()[i] != null) { item.setText(4, input.getValueField()[i]); } } } wGroup.setRowNums(); wGroup.optWidth(true); wAgg.setRowNums(); wAgg.optWidth(true); setFlags(); wStepname.selectAll(); wStepname.setFocus(); } private void cancel() { stepname = null; input.setChanged(backupChanged); input.setPassAllRows(backupAllRows); dispose(); } private void ok() { if (Const.isEmpty(wStepname.getText())) { return; } int sizegroup = wGroup.nrNonEmpty(); int nrfields = wAgg.nrNonEmpty(); input.setPrefix(wPrefix.getText()); input.setDirectory(wSortDir.getText()); input.setLineNrInGroupField(wLineNrField.getText()); input.setAlwaysGivingBackOneRow(wAlwaysAddResult.getSelection()); input.allocate(sizegroup, nrfields); // CHECKSTYLE:Indentation:OFF for (int i = 0; i < sizegroup; i++) { TableItem item = wGroup.getNonEmpty(i); input.getGroupField()[i] = item.getText(1); } // CHECKSTYLE:Indentation:OFF for (int i = 0; i < nrfields; i++) { TableItem item = wAgg.getNonEmpty(i); input.getAggregateField()[i] = item.getText(1); input.getSubjectField()[i] = item.getText(2); input.getAggregateType()[i] = GisGroupByMeta.getType(item.getText(3)); input.getValueField()[i] = item.getText(4); } stepname = wStepname.getText(); if (sizegroup > 0 && "Y".equalsIgnoreCase(props.getCustomParameter(STRING_SORT_WARNING_PARAMETER, "Y"))) { MessageDialogWithToggle md = new MessageDialogWithToggle(shell, BaseMessages.getString(PKG, "GroupByDialog.GroupByWarningDialog.DialogTitle"), null, BaseMessages.getString(PKG, "GroupByDialog.GroupByWarningDialog.DialogMessage", Const.CR) + Const.CR, MessageDialog.WARNING, new String[] { BaseMessages.getString(PKG, "GroupByDialog.GroupByWarningDialog.Option1") }, 0, BaseMessages.getString(PKG, "GroupByDialog.GroupByWarningDialog.Option2"), "N".equalsIgnoreCase(props.getCustomParameter(STRING_SORT_WARNING_PARAMETER, "Y"))); MessageDialogWithToggle.setDefaultImage(GUIResource.getInstance().getImageSpoon()); md.open(); props.setCustomParameter(STRING_SORT_WARNING_PARAMETER, md.getToggleState() ? "N" : "Y"); props.saveProps(); } dispose(); } private void get() { try { RowMetaInterface r = transMeta.getPrevStepFields(stepname); if (r != null && !r.isEmpty()) { BaseStepDialog.getFieldsFromPrevious(r, wGroup, 1, new int[] { 1 }, new int[] {}, -1, -1, null); } } catch (KettleException ke) { new ErrorDialog(shell, BaseMessages.getString(PKG, "GroupByDialog.FailedToGetFields.DialogTitle"), BaseMessages.getString(PKG, "GroupByDialog.FailedToGetFields.DialogMessage"), ke); } } private void getAgg() { try { RowMetaInterface r = transMeta.getPrevStepFields(stepname); if (r != null && !r.isEmpty()) { BaseStepDialog.getFieldsFromPrevious(r, wAgg, 1, new int[] { 1, 2 }, new int[] {}, -1, -1, null); } } catch (KettleException ke) { new ErrorDialog(shell, BaseMessages.getString(PKG, "GroupByDialog.FailedToGetFields.DialogTitle"), BaseMessages.getString(PKG, "GroupByDialog.FailedToGetFields.DialogMessage"), ke); } } }