public MetaData getMetaData(int index) {
if (indexMap == null || indexMap.length < index + 1) {
int startFrom = 0;
int lastIndex = index;
if (indexMap != null) {
startFrom = indexMap.length;
indexMap = Arrays.copyOf(indexMap, index + 1);
} else {
String[] headers = context.headers();
if (headers != null && lastIndex < headers.length) {
lastIndex = headers.length;
}
int[] indexes = context.extractedFieldIndexes();
if (indexes != null) {
for (int i = 0; i < indexes.length; i++) {
if (lastIndex < indexes[i]) {
lastIndex = indexes[i];
}
}
}
indexMap = new MetaData[lastIndex + 1];
}
for (int i = startFrom; i < lastIndex + 1; i++) {
indexMap[i] = new MetaData(i);
}
}
return indexMap[index];
}
