/** Copy information from the meta-data input to the dialog fields. */
public void getData() {
String[] inputStepNames = joinMeta.getInputSteps();
if (inputStepNames != null) {
String inputStepName;
String[] keyFields = joinMeta.getKeyFields();
String keyField;
for (int i = 0; i < inputStepNames.length; i++) {
inputStepName = Const.NVL(inputStepNames[i], "");
wInputStepArray[i].setText(inputStepName);
keyField = Const.NVL(keyFields[i], "");
keyValTextBox[i].setText(keyField);
}
String joinType = joinMeta.getJoinType();
if (joinType != null && joinType.length() > 0) {
joinTypeCombo.setText(joinType);
} else {
joinTypeCombo.setText(MultiMergeJoinMeta.join_types[0]);
}
}
wStepname.selectAll();
wStepname.setFocus();
}
private String[] getInputStepNames() {
String[] inputStepNames = joinMeta.getInputSteps();
ArrayList<String> nameList = new ArrayList<String>();
if (inputStepNames != null) {
Collections.addAll(nameList, inputStepNames);
}
String[] prevStepNames = transMeta.getPrevStepNames(stepname);
if (prevStepNames != null) {
String prevStepName;
for (int i = 0; i < prevStepNames.length; i++) {
prevStepName = prevStepNames[i];
if (nameList.contains(prevStepName)) {
continue;
}
nameList.add(prevStepName);
}
}
return nameList.toArray(new String[nameList.size()]);
}
/**
* Get the meta data
*
* @param meta
*/
private void getMeta(MultiMergeJoinMeta meta) {
StepIOMetaInterface stepIOMeta = meta.getStepIOMeta();
List<StreamInterface> infoStreams = stepIOMeta.getInfoStreams();
StreamInterface stream;
String streamDescription;
ArrayList<String> inputStepNameList = new ArrayList<String>();
ArrayList<String> keyList = new ArrayList<String>();
CCombo wInputStep;
String inputStepName;
for (int i = 0; i < wInputStepArray.length; i++) {
wInputStep = wInputStepArray[i];
inputStepName = wInputStep.getText();
if (Const.isEmpty(inputStepName)) {
continue;
}
inputStepNameList.add(inputStepName);
keyList.add(keyValTextBox[i].getText());
if (infoStreams.size() < inputStepNameList.size()) {
streamDescription = BaseMessages.getString(PKG, "MultiMergeJoin.InfoStream.Description");
stream = new Stream(StreamType.INFO, null, streamDescription, StreamIcon.INFO, null);
stepIOMeta.addStream(stream);
}
}
int inputStepCount = inputStepNameList.size();
meta.allocateInputSteps(inputStepCount);
meta.allocateKeys(inputStepCount);
String[] inputSteps = meta.getInputSteps();
String[] keyFields = meta.getKeyFields();
infoStreams = stepIOMeta.getInfoStreams();
for (int i = 0; i < inputStepCount; i++) {
inputStepName = inputStepNameList.get(i);
inputSteps[i] = inputStepName;
stream = infoStreams.get(i);
stream.setStepMeta(transMeta.findStep(inputStepName));
keyFields[i] = keyList.get(i);
}
meta.setJoinType(joinTypeCombo.getText());
}
private void cancel() {
stepname = null;
joinMeta.setChanged(backupChanged);
dispose();
}
/*
* (non-Javadoc)
*
* @see org.pentaho.di.trans.step.StepDialogInterface#open()
*/
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, joinMeta);
final ModifyListener lsMod =
new ModifyListener() {
public void modifyText(ModifyEvent e) {
joinMeta.setChanged();
}
};
backupChanged = joinMeta.hasChanged();
FormLayout formLayout = new FormLayout();
formLayout.marginWidth = Const.FORM_MARGIN;
formLayout.marginHeight = Const.FORM_MARGIN;
shell.setLayout(formLayout);
shell.setText(BaseMessages.getString(PKG, "MultiMergeJoinDialog.Shell.Label"));
// int middle = props.getMiddlePct();
wlStepname = new Label(shell, SWT.LEFT);
wlStepname.setText(BaseMessages.getString(PKG, "MultiMergeJoinDialog.Stepname.Label"));
props.setLook(wlStepname);
fdlStepname = new FormData();
fdlStepname.left = new FormAttachment(0, 0);
fdlStepname.right = new FormAttachment(15, -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(15, 0);
fdStepname.top = new FormAttachment(0, margin);
fdStepname.right = new FormAttachment(35, 0);
wStepname.setLayoutData(fdStepname);
// create widgets for input stream and join key selections
createInputStreamWidgets(lsMod);
// create widgets for Join type
createJoinTypeWidget(lsMod);
// 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();
// get the data
getData();
joinMeta.setChanged(backupChanged);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
return stepname;
}