@Override
public void parseRecords(int offset, int numRecords) throws IOException {
featureCollection = new ListFeatureCollection(simpleFeatureType);
SimpleFeatureBuilder builder = new SimpleFeatureBuilder(simpleFeatureType);
skipToLine(offset);
String line;
long featureCount = offset;
while ((numRecords == -1 || featureCount < offset + numRecords)
&& (line = stream.readLine()) != null) {
String[] tokens = getTokens(line);
if (tokens == null) {
break;
}
int expectedTokenCount = simpleFeatureType.getAttributeCount();
expectedTokenCount += hasFeatureId ? 1 : 0;
if (tokens.length != expectedTokenCount) {
continue;
}
builder.reset();
String featureId = "" + featureCount++;
for (int i = 0; i < tokens.length; i++) {
String token = tokens[i];
if (i == 0 && hasFeatureId) {
featureId = token;
} else {
try {
Object value = null;
int currentIndex = i;
currentIndex -= hasFeatureId ? 1 : 0;
if (!VectorDataNodeIO.NULL_TEXT.equals(token)) {
value = converters[currentIndex].parse(token);
}
builder.set(simpleFeatureType.getDescriptor(currentIndex).getLocalName(), value);
} catch (ConversionException e) {
BeamLogManager.getSystemLogger()
.warning(String.format("Problem in '%s': %s", csv.getPath(), e.getMessage()));
}
}
}
SimpleFeature simpleFeature = builder.buildFeature(featureId);
featureCollection.add(simpleFeature);
bytePositionForOffset.put(featureCount, stream.getStreamPosition());
}
recordsParsed = true;
}
@Override
public Object[] parseRecords(final int offset, final int numRecords, final String rowName)
throws IOException {
AttributeDescriptor attributeDescriptor = simpleFeatureType.getDescriptor(rowName);
int expectedTokenCount = simpleFeatureType.getAttributeCount();
expectedTokenCount += hasFeatureId ? 1 : 0;
int rowIndex = simpleFeatureType.getAttributeDescriptors().indexOf(attributeDescriptor);
int tokenIndex = rowIndex + (hasFeatureId ? 1 : 0);
List<Object> values = new ArrayList<>(numRecords);
skipToLine(offset);
String line;
long featureCount = offset;
while ((numRecords == -1 || featureCount < offset + numRecords)
&& (line = stream.readLine()) != null) {
String[] tokens = getTokens(line);
if (tokens == null) {
break;
}
if (tokens.length != expectedTokenCount) {
continue;
}
featureCount++;
String token = tokens[tokenIndex];
try {
Object value = null;
if (!VectorDataNodeIO.NULL_TEXT.equals(token)) {
value = converters[rowIndex].parse(token);
}
values.add(value);
} catch (ConversionException e) {
BeamLogManager.getSystemLogger()
.warning(String.format("Problem in '%s': %s", csv.getPath(), e.getMessage()));
}
bytePositionForOffset.put(featureCount, stream.getStreamPosition());
}
return values.toArray();
}
