/*! ******************************************************************************
*
* 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.janino;
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.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.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.util.Utils;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.value.ValueMetaFactory;
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.janino.JaninoMeta;
import org.pentaho.di.trans.steps.janino.JaninoMetaFunction;
import org.pentaho.di.ui.core.widget.ColumnInfo;
import org.pentaho.di.ui.core.widget.TableView;
import org.pentaho.di.ui.trans.step.BaseStepDialog;
public class JaninoDialog extends BaseStepDialog implements StepDialogInterface {
private static Class<?> PKG = JaninoMeta.class; // for i18n purposes, needed by Translator2!!
private Label wlStepname;
private Text wStepname;
private FormData fdlStepname, fdStepname;
private Label wlFields;
private TableView wFields;
private FormData fdlFields, fdFields;
private JaninoMeta currentMeta;
private JaninoMeta originalMeta;
private Map<String, Integer> inputFields;
private ColumnInfo[] colinf;
public JaninoDialog( Shell parent, Object in, TransMeta tr, String sname ) {
super( parent, (BaseStepMeta) in, tr, sname );
// The order here is important... currentMeta is looked at for changes
currentMeta = (JaninoMeta) in;
originalMeta = (JaninoMeta) currentMeta.clone();
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.MIN | SWT.MAX );
props.setLook( shell );
setShellImage( shell, currentMeta );
ModifyListener lsMod = new ModifyListener() {
public void modifyText( ModifyEvent e ) {
currentMeta.setChanged();
}
};
changed = currentMeta.hasChanged();
FormLayout formLayout = new FormLayout();
formLayout.marginWidth = Const.FORM_MARGIN;
formLayout.marginHeight = Const.FORM_MARGIN;
shell.setLayout( formLayout );
shell.setText( BaseMessages.getString( PKG, "JaninoDialog.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 );
wlFields = new Label( shell, SWT.NONE );
wlFields.setText( BaseMessages.getString( PKG, "JaninoDialog.Fields.Label" ) );
props.setLook( wlFields );
fdlFields = new FormData();
fdlFields.left = new FormAttachment( 0, 0 );
fdlFields.top = new FormAttachment( wStepname, margin );
wlFields.setLayoutData( fdlFields );
final int FieldsRows = currentMeta.getFormula() != null ? currentMeta.getFormula().length : 1;
colinf =
new ColumnInfo[] {
new ColumnInfo(
BaseMessages.getString( PKG, "JaninoDialog.NewField.Column" ), ColumnInfo.COLUMN_TYPE_TEXT, false ),
new ColumnInfo(
BaseMessages.getString( PKG, "JaninoDialog.Janino.Column" ), ColumnInfo.COLUMN_TYPE_TEXT, false ),
new ColumnInfo(
BaseMessages.getString( PKG, "JaninoDialog.ValueType.Column" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
ValueMetaFactory.getValueMetaNames() ),
new ColumnInfo(
BaseMessages.getString( PKG, "JaninoDialog.Length.Column" ), ColumnInfo.COLUMN_TYPE_TEXT, false ),
new ColumnInfo(
BaseMessages.getString( PKG, "JaninoDialog.Precision.Column" ), ColumnInfo.COLUMN_TYPE_TEXT, false ),
new ColumnInfo(
BaseMessages.getString( PKG, "JaninoDialog.Replace.Column" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
new String[] {} ), };
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( 100, -50 );
wFields.setLayoutData( fdFields );
//
// 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(), new Integer( i ) );
}
setComboBoxes();
} catch ( KettleException e ) {
logError( BaseMessages.getString( PKG, "JaninoDialog.Log.UnableToFindInput" ) );
}
}
}
};
new Thread( runnable ).start();
wFields.addModifyListener( new ModifyListener() {
public void modifyText( ModifyEvent arg0 ) {
// Now set the combo's
shell.getDisplay().asyncExec( new Runnable() {
public void run() {
setComboBoxes();
}
} );
}
} );
// Some 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 );
// Add listeners
lsCancel = new Listener() {
public void handleEvent( Event e ) {
cancel();
}
};
lsOK = new Listener() {
public void handleEvent( Event e ) {
ok();
}
};
wCancel.addListener( SWT.Selection, lsCancel );
wOK.addListener( SWT.Selection, lsOK );
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();
currentMeta.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 );
shell.getDisplay().syncExec( new Runnable() {
public void run() {
// Add the newly create fields.
//
/*
* int nrNonEmptyFields = wFields.nrNonEmpty(); for (int i=0;i<nrNonEmptyFields;i++) { TableItem item =
* wFields.getNonEmpty(i); fields.put(item.getText(1), new Integer(1000000+i)); // The number is just to debug
* the origin of the fieldname }
*/
Set<String> keySet = fields.keySet();
List<String> entries = new ArrayList<String>( keySet );
String[] fieldNames = entries.toArray( new String[entries.size()] );
Const.sortStrings( fieldNames );
colinf[5].setComboValues( fieldNames );
}
} );
}
/**
* Copy information from the meta-data currentMeta to the dialog fields.
*/
public void getData() {
if ( currentMeta.getFormula() != null ) {
for ( int i = 0; i < currentMeta.getFormula().length; i++ ) {
JaninoMetaFunction fn = currentMeta.getFormula()[i];
TableItem item = wFields.table.getItem( i );
item.setText( 1, Const.NVL( fn.getFieldName(), "" ) );
item.setText( 2, Const.NVL( fn.getFormula(), "" ) );
item.setText( 3, Const.NVL( ValueMetaFactory.getValueMetaName( fn.getValueType() ), "" ) );
if ( fn.getValueLength() >= 0 ) {
item.setText( 4, "" + fn.getValueLength() );
}
if ( fn.getValuePrecision() >= 0 ) {
item.setText( 5, "" + fn.getValuePrecision() );
}
item.setText( 6, Const.NVL( fn.getReplaceField(), "" ) );
}
}
wFields.setRowNums();
wFields.optWidth( true );
wStepname.selectAll();
wStepname.setFocus();
}
private void cancel() {
stepname = null;
currentMeta.setChanged( changed );
dispose();
}
private void ok() {
if ( Utils.isEmpty( wStepname.getText() ) ) {
return;
}
stepname = wStepname.getText(); // return value
currentMeta.allocate( wFields.nrNonEmpty() );
int nrNonEmptyFields = wFields.nrNonEmpty();
for ( int i = 0; i < nrNonEmptyFields; i++ ) {
TableItem item = wFields.getNonEmpty( i );
String fieldName = item.getText( 1 );
String formula = item.getText( 2 );
int valueType = ValueMetaFactory.getIdForValueMeta( item.getText( 3 ) );
int valueLength = Const.toInt( item.getText( 4 ), -1 );
int valuePrecision = Const.toInt( item.getText( 5 ), -1 );
String replaceField = item.getText( 6 );
//CHECKSTYLE:Indentation:OFF
currentMeta.getFormula()[i] = new JaninoMetaFunction( fieldName, formula, valueType,
valueLength, valuePrecision, replaceField );
}
if ( !originalMeta.equals( currentMeta ) ) {
currentMeta.setChanged();
changed = currentMeta.hasChanged();
}
dispose();
}
}