// Grab the first x lines from the given file...
//
private List<String> getFirst(FixedInputMeta meta, int limit)
throws IOException, KettleValueException {
List<String> lines = new ArrayList<String>();
FixedInputMeta oneMeta = new FixedInputMeta();
getInfo(oneMeta);
// Add a single field with the width of the line...
//
int lineWidth = Integer.parseInt(oneMeta.getLineWidth());
if (lineWidth <= 0) {
throw new IOException("The width of a line can not be 0 or less.");
}
oneMeta.allocate(1);
FixedFileInputField field = new FixedFileInputField();
field.setName("Field1");
field.setType(ValueMetaInterface.TYPE_STRING);
field.setWidth(lineWidth);
// CHECKSTYLE:Indentation:OFF
oneMeta.getFieldDefinition()[0] = field;
TransMeta previewMeta =
TransPreviewFactory.generatePreviewTransformation(transMeta, oneMeta, wStepname.getText());
TransPreviewProgressDialog progressDialog =
new TransPreviewProgressDialog(
shell, previewMeta, new String[] {wStepname.getText()}, new int[] {limit});
progressDialog.open();
Trans trans = progressDialog.getTrans();
String loggingText = progressDialog.getLoggingText();
if (!progressDialog.isCancelled()) {
if (trans.getResult() != null && trans.getResult().getNrErrors() > 0) {
EnterTextDialog etd =
new EnterTextDialog(
shell,
BaseMessages.getString(PKG, "System.Dialog.PreviewError.Title"),
BaseMessages.getString(PKG, "System.Dialog.PreviewError.Message"),
loggingText,
true);
etd.setReadOnly();
etd.open();
}
}
// The rows are in the transformation...
//
RowMetaInterface previewRowsMeta = progressDialog.getPreviewRowsMeta(wStepname.getText());
List<Object[]> previewRowsData = progressDialog.getPreviewRows(wStepname.getText());
for (int i = 0; i < previewRowsData.size(); i++) {
String line = previewRowsMeta.getString(previewRowsData.get(i), 0);
lines.add(line);
}
return lines;
}
private void getInfo(FixedInputMeta fixedInputMeta) {
fixedInputMeta.setFilename(wFilename.getText());
fixedInputMeta.setLineWidth(wLineWidth.getText());
fixedInputMeta.setBufferSize(wBufferSize.getText());
fixedInputMeta.setLazyConversionActive(wLazyConversion.getSelection());
fixedInputMeta.setHeaderPresent(wHeaderPresent.getSelection());
fixedInputMeta.setLineFeedPresent(wLineFeedPresent.getSelection());
fixedInputMeta.setRunningInParallel(wRunningInParallel.getSelection());
fixedInputMeta.setFileType(FixedInputMeta.getFileType(wFileType.getText()));
fixedInputMeta.setEncoding(wEncoding.getText());
fixedInputMeta.setAddResultFile(wAddResult.getSelection());
int nrNonEmptyFields = wFields.nrNonEmpty();
fixedInputMeta.allocate(nrNonEmptyFields);
for (int i = 0; i < nrNonEmptyFields; i++) {
TableItem item = wFields.getNonEmpty(i);
int colnr = 1;
FixedFileInputField field = new FixedFileInputField();
field.setName(item.getText(colnr++));
field.setType(ValueMetaFactory.getIdForValueMeta(item.getText(colnr++)));
field.setFormat(item.getText(colnr++));
field.setWidth(Const.toInt(item.getText(colnr++), -1));
field.setLength(Const.toInt(item.getText(colnr++), -1));
field.setPrecision(Const.toInt(item.getText(colnr++), -1));
field.setCurrency(item.getText(colnr++));
field.setDecimal(item.getText(colnr++));
field.setGrouping(item.getText(colnr++));
field.setTrimType(ValueMetaString.getTrimTypeByDesc(item.getText(colnr++)));
// CHECKSTYLE:Indentation:OFF
fixedInputMeta.getFieldDefinition()[i] = field;
}
wFields.removeEmptyRows();
wFields.setRowNums();
wFields.optWidth(true);
fixedInputMeta.setChanged();
}
private void getFixed() {
final FixedInputMeta info = new FixedInputMeta();
getInfo(info);
Shell sh = new Shell(shell, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN);
try {
List<String> rows = getFirst(info, 50);
fields = new ArrayList<FixedFileInputField>();
fields.addAll(Arrays.asList(info.getFieldDefinition()));
if (fields.isEmpty()) {
FixedFileInputField field = new FixedFileInputField();
field.setName(
"Field"
+ 1); // TODO: i18n, see also FixedTableDraw class for other references of this
// String
// --> getNewFieldname() method
field.setType(ValueMetaInterface.TYPE_STRING);
field.setTrimType(ValueMetaInterface.TRIM_TYPE_NONE);
field.setWidth(Const.toInt(info.getLineWidth(), 80));
field.setLength(-1);
field.setPrecision(-1);
fields.add(field);
} else if (info.hasChanged()) {
// try to reuse the field mappings already set up.
int width = 0;
List<FixedFileInputField> reuse = new ArrayList<FixedFileInputField>();
for (FixedFileInputField field : fields) {
width += field.getWidth();
// does this field fit on the line given the line width?
if (width <= Const.toInt(info.getLineWidth(), width)) {
// yes, reuse it
reuse.add(field);
} else {
// no, remove its width from the total reused width then quit looking for more
width -= field.getWidth();
continue;
}
}
int lineWidth = Const.toInt(info.getLineWidth(), width);
// set the last reused field to take up the rest of the line.
FixedFileInputField lastField = reuse.get(reuse.size() - 1);
// don't let the width be grater than the line width
if (width > lineWidth) {
width = lineWidth;
}
// determine width of last field : lineWidth - (totalWidthOfFieldsReused - lastFieldWidth)
int lastWidth = Const.toInt(info.getLineWidth(), width) - (width - lastField.getWidth());
// make the last field occupy the remaining space
lastField.setWidth(lastWidth);
// reuse the fields...
fields = reuse;
}
final FixedFileImportWizardPage1 page1 =
new FixedFileImportWizardPage1("1", props, rows, fields);
page1.createControl(sh);
final FixedFileImportWizardPage2 page2 =
new FixedFileImportWizardPage2("2", props, rows, fields);
page2.createControl(sh);
Wizard wizard =
new Wizard() {
public boolean performFinish() {
wFields.clearAll(false);
for (int i = 0; i < fields.size(); i++) {
FixedFileInputField field = fields.get(i);
if (field.getWidth() > 0) {
TableItem item = new TableItem(wFields.table, SWT.NONE);
item.setText(1, field.getName());
item.setText(2, "" + ValueMetaFactory.getValueMetaName(field.getType()));
item.setText(3, "" + field.getFormat());
item.setText(4, "" + field.getWidth());
item.setText(5, field.getLength() < 0 ? "" : "" + field.getLength());
item.setText(6, field.getPrecision() < 0 ? "" : "" + field.getPrecision());
item.setText(7, "" + field.getCurrency());
item.setText(8, "" + field.getDecimal());
item.setText(9, "" + field.getGrouping());
}
}
int size = wFields.table.getItemCount();
if (size == 0) {
new TableItem(wFields.table, SWT.NONE);
}
wFields.removeEmptyRows();
wFields.setRowNums();
wFields.optWidth(true);
inputMeta.setChanged();
return true;
}
};
wizard.addPage(page1);
wizard.addPage(page2);
WizardDialog wd = new WizardDialog(shell, wizard);
WizardDialog.setDefaultImage(GUIResource.getInstance().getImageWizard());
wd.setMinimumPageSize(700, 375);
wd.updateSize();
wd.open();
} catch (Exception e) {
new ErrorDialog(
shell,
BaseMessages.getString(PKG, "FixedInputDialog.ErrorShowingFixedWizard.DialogTitle"),
BaseMessages.getString(PKG, "FixedInputDialog.ErrorShowingFixedWizard.DialogMessage"),
e);
}
}