/** Reset the transformer in preparation for a new object */
private void reset() throws TransformerException {
if (firstRun) {
firstRun = false;
// Output directory
String outputPath = config.getString(null, "outputPath");
if (outputPath == null) {
throw new TransformerException("Output path not specified!");
}
outputDir = new File(outputPath);
outputDir.mkdirs();
// Rendition exclusions
excludeList =
Arrays.asList(StringUtils.split(config.getString(null, "excludeRenditionExt"), ','));
// Conversion Service URL
convertUrl = config.getString(null, "url");
if (convertUrl == null) {
throw new TransformerException("No ICE URL provided!");
}
}
// Priority
Boolean testResponse = itemConfig.getBoolean(null, "priority");
if (testResponse != null) {
// We found it in item config
priority = testResponse;
} else {
// Try system config
priority = config.getBoolean(true, "priority");
}
// Clear the old SAX reader
reader = new SafeSAXReader();
// Remove the last object
thumbnails = null;
previews = null;
}
/**
* Initialise the CSV harvester plugin.
*
* @throws HarvesterException if an error occurred
*/
@Override
public void init() throws HarvesterException {
JsonSimple options = new JsonSimple(getJsonConfig().getObject("harvester", "csv"));
String filePath = options.getString(null, "fileLocation");
if (filePath == null) {
throw new HarvesterException("No data file provided!");
}
File csvDataFile = new File(filePath);
if (csvDataFile == null || !csvDataFile.exists()) {
throw new HarvesterException("Could not find CSV file '" + filePath + "'");
}
filename = csvDataFile.getName();
idPrefix = options.getString("", "recordIDPrefix");
maxRows = options.getInteger(-1, "maxRows");
delimiter = options.getString(String.valueOf(DEFAULT_DELIMITER), "delimiter").charAt(0);
ignoredFields = getStringList(options, "ignoreFields");
includedFields = getStringList(options, "includedFields");
multiValueFields = getStringList(options, "multiValueFields");
multiValueFieldDelimiter =
options
.getString(
String.valueOf(DEFAULT_MULTI_VALUE_FIELD_DELIMITER), "multiValueFieldDelimiter")
.charAt(0);
payloadId = options.getString(DEFAULT_PAYLOAD_ID, "payloadId");
batchSize = options.getInteger(DEFAULT_BATCH_SIZE, "batchSize");
hasMore = true;
if (delimiter == multiValueFieldDelimiter) {
throw new HarvesterException(
"Cannot parse CSV: The requested delimiters for the CSV and multivalue fields are the same: "
+ delimiter);
}
try {
// open the CSV file for reading
Reader fileReader = new InputStreamReader(new FileInputStream(csvDataFile), "UTF-8");
// char delimiter = options.getString(String.valueOf(DEFAULT_DELIMITER),
// "delimiter").charAt(0);
csvReader = new CSVReader(fileReader, delimiter);
// configure the data fields
if (options.getBoolean(true, "headerRow")) {
dataFields = Arrays.asList(csvReader.readNext());
} else {
dataFields = getStringList(options, "headerList");
}
// check that the specified id column is valid
idColumn = options.getString(null, "idColumn");
if (idColumn != null && !dataFields.contains(idColumn)) {
throw new HarvesterException(
"ID column '" + idColumn + "' was invalid or not found in the data!");
}
// load filters, all filters must pass for the row to be considered
filters = new HashMap<String, List<Filter>>();
List<JsonSimple> filterConfig = options.getJsonSimpleList("filters");
if (filterConfig != null) {
for (JsonSimple singleFilterConfig : filterConfig) {
Filter filter = new Filter(singleFilterConfig);
String field = filter.getField();
if (!dataFields.contains(field)) {
throw new HarvesterException("Filter column '" + field + "' was not found in the data");
}
List<Filter> existingFilters = filters.get(field);
if (existingFilters == null) {
existingFilters = new ArrayList<Filter>();
filters.put(field, existingFilters);
}
existingFilters.add(filter);
}
}
} catch (IOException ioe) {
throw new HarvesterException(ioe);
}
}