public boolean init(StepMetaInterface smi, StepDataInterface sdi) {
meta = (XsltMeta) smi;
data = (XsltData) sdi;
if (super.init(smi, sdi)) {
// Specify weither or not we have to deal with XSL filename
data.xslIsAfile = (meta.useXSLField() && meta.isXSLFieldIsAFile()) || (!meta.useXSLField());
// Add init code here.
return true;
}
return false;
}
public boolean processRow(StepMetaInterface smi, StepDataInterface sdi) throws KettleException {
meta = (XsltMeta) smi;
data = (XsltData) sdi;
Object[] row = getRow();
if (row == null) { // no more input to be expected...
setOutputDone();
return false;
}
if (first) {
first = false;
data.outputRowMeta = getInputRowMeta().clone();
meta.getFields(data.outputRowMeta, getStepname(), null, null, this, repository, metaStore);
// Check if The result field is given
if (Const.isEmpty(meta.getResultfieldname())) {
// Result Field is missing !
logError(BaseMessages.getString(PKG, "Xslt.Log.ErrorResultFieldMissing"));
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.ErrorResultFieldMissing"));
}
// Check if The XML field is given
if (Const.isEmpty(meta.getFieldname())) {
// Result Field is missing !
logError(BaseMessages.getString(PKG, "Xslt.Exception.ErrorXMLFieldMissing"));
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.ErrorXMLFieldMissing"));
}
// Try to get XML Field index
data.fieldposition = getInputRowMeta().indexOfValue(meta.getFieldname());
// Let's check the Field
if (data.fieldposition < 0) {
// The field is unreachable !
logError(
BaseMessages.getString(PKG, "Xslt.Log.ErrorFindingField")
+ "["
+ meta.getFieldname()
+ "]");
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.CouldnotFindField", meta.getFieldname()));
}
// Check if the XSL Filename is contained in a column
if (meta.useXSLField()) {
if (Const.isEmpty(meta.getXSLFileField())) {
// The field is missing
// Result field is missing !
logError(BaseMessages.getString(PKG, "Xslt.Log.ErrorXSLFileFieldMissing"));
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.ErrorXSLFileFieldMissing"));
}
// Try to get Field index
data.fielxslfiledposition = getInputRowMeta().indexOfValue(meta.getXSLFileField());
// Let's check the Field
if (data.fielxslfiledposition < 0) {
// The field is unreachable !
logError(
BaseMessages.getString(PKG, "Xslt.Log.ErrorXSLFileFieldFinding")
+ "["
+ meta.getXSLFileField()
+ "]");
throw new KettleStepException(
BaseMessages.getString(
PKG, "Xslt.Exception.ErrorXSLFileFieldFinding", meta.getXSLFileField()));
}
} else {
if (Const.isEmpty(meta.getXslFilename())) {
logError(BaseMessages.getString(PKG, "Xslt.Log.ErrorXSLFile"));
throw new KettleStepException(BaseMessages.getString(PKG, "Xslt.Exception.ErrorXSLFile"));
}
// Check if XSL File exists!
data.xslfilename = environmentSubstitute(meta.getXslFilename());
FileObject file = null;
try {
file = KettleVFS.getFileObject(data.xslfilename);
if (!file.exists()) {
logError(
BaseMessages.getString(PKG, "Xslt.Log.ErrorXSLFileNotExists", data.xslfilename));
throw new KettleStepException(
BaseMessages.getString(
PKG, "Xslt.Exception.ErrorXSLFileNotExists", data.xslfilename));
}
if (file.getType() != FileType.FILE) {
logError(BaseMessages.getString(PKG, "Xslt.Log.ErrorXSLNotAFile", data.xslfilename));
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.ErrorXSLNotAFile", data.xslfilename));
}
} catch (Exception e) {
throw new KettleStepException(e);
} finally {
try {
if (file != null) {
file.close();
}
} catch (Exception e) {
/* Ignore */
}
}
}
// Check output parameters
int nrOutputProps =
meta.getOutputPropertyName() == null ? 0 : meta.getOutputPropertyName().length;
if (nrOutputProps > 0) {
data.outputProperties = new Properties();
for (int i = 0; i < nrOutputProps; i++) {
data.outputProperties.put(
meta.getOutputPropertyName()[i],
environmentSubstitute(meta.getOutputPropertyValue()[i]));
}
data.setOutputProperties = true;
}
// Check parameters
data.nrParams = meta.getParameterField() == null ? 0 : meta.getParameterField().length;
if (data.nrParams > 0) {
data.indexOfParams = new int[data.nrParams];
data.nameOfParams = new String[data.nrParams];
for (int i = 0; i < data.nrParams; i++) {
String name = environmentSubstitute(meta.getParameterName()[i]);
String field = environmentSubstitute(meta.getParameterField()[i]);
if (Const.isEmpty(field)) {
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.ParameterFieldMissing", name, i));
}
data.indexOfParams[i] = getInputRowMeta().indexOfValue(field);
if (data.indexOfParams[i] < 0) {
throw new KettleStepException(
BaseMessages.getString(PKG, "Xslt.Exception.ParameterFieldNotFound", name));
}
data.nameOfParams[i] = name;
}
data.useParameters = true;
}
data.factory = TransformerFactory.newInstance();
if (meta.getXSLFactory().equals("SAXON")) {
// Set the TransformerFactory to the SAXON implementation.
data.factory = new net.sf.saxon.TransformerFactoryImpl();
}
} // end if first
// Get the field value
String xmlValue = getInputRowMeta().getString(row, data.fieldposition);
if (meta.useXSLField()) {
// Get the value
data.xslfilename = getInputRowMeta().getString(row, data.fielxslfiledposition);
if (log.isDetailed()) {
logDetailed(
BaseMessages.getString(
PKG, "Xslt.Log.XslfileNameFromFied", data.xslfilename, meta.getXSLFileField()));
}
}
try {
if (log.isDetailed()) {
if (meta.isXSLFieldIsAFile()) {
logDetailed(BaseMessages.getString(PKG, "Xslt.Log.Filexsl") + data.xslfilename);
} else {
logDetailed(BaseMessages.getString(PKG, "Xslt.Log.XslStream", data.xslfilename));
}
}
// Get the template from the cache
Transformer transformer = data.getTemplate(data.xslfilename, data.xslIsAfile);
// Do we need to set output properties?
if (data.setOutputProperties) {
transformer.setOutputProperties(data.outputProperties);
}
// Do we need to pass parameters?
if (data.useParameters) {
for (int i = 0; i < data.nrParams; i++) {
transformer.setParameter(data.nameOfParams[i], row[data.indexOfParams[i]]);
}
}
Source source = new StreamSource(new StringReader(xmlValue));
// Prepare output stream
StreamResult result = new StreamResult(new StringWriter());
// transform xml source
transformer.transform(source, result);
String xmlString = result.getWriter().toString();
if (log.isDetailed()) {
logDetailed(BaseMessages.getString(PKG, "Xslt.Log.FileResult"));
logDetailed(xmlString);
}
Object[] outputRowData = RowDataUtil.addValueData(row, getInputRowMeta().size(), xmlString);
if (log.isRowLevel()) {
logRowlevel(
BaseMessages.getString(PKG, "Xslt.Log.ReadRow")
+ " "
+ getInputRowMeta().getString(row));
}
// add new values to the row.
putRow(data.outputRowMeta, outputRowData); // copy row to output rowset(s);
} catch (Exception e) {
String errorMessage = e.getMessage();
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
DefaultErrorHandler.printLocation(pw, e);
pw.close();
errorMessage = sw.toString() + "\n" + errorMessage;
if (getStepMeta().isDoingErrorHandling()) {
// Simply add this row to the error row
putError(getInputRowMeta(), row, 1, errorMessage, meta.getResultfieldname(), "XSLT01");
} else {
logError(BaseMessages.getString(PKG, "Xslt.ErrorProcesing" + " : " + errorMessage));
throw new KettleStepException(BaseMessages.getString(PKG, "Xslt.ErrorProcesing"), e);
}
}
return true;
}
