/**
* This method is called when the start of an XML element is encountered. Instantiates new objects
* when necessary and lets the characters method know what kind of action to take.
*
* @param name Name of the element that is encountered.
* @param atts The attributes encountered.
* @throws SAXException Exception thrown if is wrong type of XML file.
*/
public void startElement(String namespace, String name, String qName, Attributes atts)
throws SAXException {
// Make sure is correct file type
if (count == 0)
if (!name.equals("feature_vector_file") && !qName.equals("feature_vector_file"))
throw new SAXException("\n\nIt is in reality of the type " + name + ".");
count++;
// Identify the type of tag
tag_identifier = 0;
if (name.equals("data_set") || qName.equals("data_set")) {
// Create a new Dataset and add it to root_datasets.
current_root_dataset = new DataSet();
root_datasets.add(current_root_dataset);
} else if (name.equals("section") || qName.equals("section")) {
// Create a new set of sub-sets of a data set if subset_datasets is null
if (subset_datasets == null) subset_datasets = new LinkedList<DataSet>();
// Create a new sub-set DataSet. Place this DataSet in the list of
// sub-set DataSets and gives it a reference to it's parent root
// DataSet.
current_subset_dataset = new DataSet();
current_subset_dataset.parent = current_root_dataset;
subset_datasets.add(current_subset_dataset);
// Extract the name of the DataSet from the id attribute
current_subset_dataset.start = Double.parseDouble(atts.getValue(0));
current_subset_dataset.stop = Double.parseDouble(atts.getValue(1));
} else if (name.equals("feature") || qName.equals("feature")) {
// Prepare the linked lists to store feature values
if (feature_name_list == null) {
feature_name_list = new LinkedList<String>();
feature_values_list = new LinkedList<double[]>();
}
feature_indidual_values_list = new LinkedList<String>();
} else if (name.equals("data_set_id") || qName.equals("data_set_id")) tag_identifier = 1;
else if (name.equals("name") || qName.equals("name")) tag_identifier = 2;
else if (name.equals("v") || qName.equals("v")) tag_identifier = 3;
}
