public static void preprocess(Map<String, ImageData> images) throws IOException {
File cacheFile = new File(colorHistCacheFile);
if (cacheFile.exists()) {
try (BufferedReader br = new BufferedReader(new FileReader(colorHistCacheFile))) {
String line = br.readLine();
while (line != null) {
double[] bins = new double[dim * dim * dim];
String key = line.substring(0, line.indexOf(" "));
String values = line.substring(line.indexOf("[") + 1, line.indexOf("]"));
String binS[] = values.split(",\\s");
for (int i = 0; i < binS.length; i++) {
bins[i] = Double.parseDouble(binS[i]);
}
images.get(key).setColorHistogram(bins);
line = br.readLine();
}
} catch (IOException e) {
e.printStackTrace();
}
} else {
try (BufferedWriter bw = new BufferedWriter(new FileWriter(colorHistCacheFile))) {
for (ImageData id : images.values()) {
double[] colorHistogram = getHist(id);
id.setColorHistogram(colorHistogram);
String line = String.format("%s %s%n", id.getFilename(), Arrays.toString(colorHistogram));
bw.write(line);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void updateImage(ImageData imageData) throws Exception {
fUpdateTopicContent.setString(1, imageData.getUrl());
fUpdateTopicContent.setString(2, imageData.getFilename());
fUpdateTopicContent.setString(3, imageData.getName());
fUpdateTopicContent.execute();
}
public void insertImage(ImageData imageData) throws Exception {
fInsertImage.setString(1, imageData.getName());
fInsertImage.setString(2, imageData.getUrl());
fInsertImage.setString(3, imageData.getFilename());
fInsertImage.execute();
}