📄 filesystemretrieval.java
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}
// Sorting Vector ...
Collections.sort(results, new Comparator() {
public int compare(Object o1, Object o2) {
int retVal = 0;
double rel = ((ResultListEntry) o1).getRelevance() - ((ResultListEntry) o2).getRelevance();
if (rel < 0) retVal = -1;
if (rel > 0) retVal = 1;
return retVal;
}
});
} catch (Exception e) {
debug("Couldn't find descriptions ... " + e.getMessage());
}
return results;
}
public List<ResultListEntry> getImagesBySemantics(String xPath, Vector objects, String whereToSearch,
boolean recursive, JProgressBar progress) {
LinkedList<ResultListEntry> results = new LinkedList<ResultListEntry>();
boolean isResult = false;
try {
if (progress != null)
progress.setString("Finding MPEG-7 files ...");
String[] descriptions = FileOperations.getAllDescriptions(new File(whereToSearch), recursive);
double[] diffs = new double[descriptions.length];
for (int i = 0; i < diffs.length; i++) {
diffs[i] = -1.0;
}
SAXBuilder builder = new SAXBuilder();
if (progress != null) {
progress.setMinimum(0);
progress.setMaximum(descriptions.length);
progress.setValue(0);
progress.setString("Searching for XPath ...");
}
double[] maxdiff = new double[MAX_COUNT];
for (int i = 0; i < maxdiff.length; i++) {
maxdiff[i] = -1.0;
}
for (int i = 0; i < descriptions.length; i++) {
Element e = null;
try {
e = builder.build(descriptions[i]).getRootElement();
java.util.List l = RetrievalToolkit.xpathQuery(e, xPath, null);
isResult = false;
if (l.size() > 0) {
isResult = true;
Element semantics = (Element) l.get(0);
Namespace mpeg7 = semantics.getNamespace();
java.util.List rels = semantics.getChild("Graph", mpeg7).getChildren("Relation", mpeg7);
java.util.List obje = semantics.getChildren("SemanticBase", mpeg7);
String rel1 = (String) objects.get(3);
String rel2 = (String) objects.get(4);
boolean rel1OK = false;
boolean rel2OK = false;
debug("found Element matching XPath Statement ....");
// checking relation 1
if (rel1.length() > 0) {
if (rel1.equals("*")) {
for (Iterator it1 = rels.iterator(); it1.hasNext();) {
Element relation = (Element) it1.next();
// test if objects are referenced:
boolean inverse = false;
if (((String) objects.get(5)).length() > 0) inverse = true;
if (isValidRelation(relation, (String) objects.get(0), (String) objects.get(1), obje, inverse, 1)) {
rel1OK = true;
}
}
} else {
for (Iterator it1 = rels.iterator(); it1.hasNext();) {
Element relation = (Element) it1.next();
if (relation.getAttributeValue("type").endsWith(":" + rel1)) {
// test if objects are referenced:
boolean inverse = false;
if (((String) objects.get(5)).length() > 0) inverse = true;
if (isValidRelation(relation, (String) objects.get(0), (String) objects.get(1), obje, inverse, 1)) {
rel1OK = true;
}
}
}
}
} else {
rel1OK = true;
}
// Checking relation 2
if (rel2.length() > 0) {
if (rel2.equals("*")) {
for (Iterator it1 = rels.iterator(); it1.hasNext();) {
Element relation = (Element) it1.next();
// test if objects are referenced:
boolean inverse = false;
if (((String) objects.get(6)).length() > 0) inverse = true;
if (isValidRelation(relation, (String) objects.get(1), (String) objects.get(2), obje, inverse, 2)) {
rel2OK = true;
}
}
} else {
for (Iterator it1 = rels.iterator(); it1.hasNext();) {
Element relation = (Element) it1.next();
if (relation.getAttributeValue("type").endsWith(":" + rel2)) {
// test if objects are referenced:
boolean inverse = false;
if (((String) objects.get(6)).length() > 0) inverse = true;
if (isValidRelation(relation, (String) objects.get(1), (String) objects.get(2), obje, inverse, 2)) {
rel2OK = true;
}
}
}
}
} else {
rel2OK = true;
}
if (rel2.length() > 0) {
}
isResult = rel1OK && rel2OK;
}
if (isResult) {
diffs[i] = 1.0 / (double) l.size();
if (i == MAX_COUNT) {
Arrays.sort(maxdiff);
}
if (i < MAX_COUNT) {
maxdiff[i] = diffs[i];
results.add(new ResultListEntry(diffs[i], e, descriptions[i]));
} else {
if (diffs[i] <= maxdiff[MAX_COUNT - 1] || maxdiff[MAX_COUNT - 1] < 0) {
results.add(new ResultListEntry(diffs[i], e, descriptions[i]));
maxdiff[MAX_COUNT - 1] = diffs[i];
for (int jj = MAX_COUNT - 1; jj > 0; jj--) {
// bubble up :)
if (maxdiff[jj - 1] > maxdiff[jj]) {
double tmp = maxdiff[jj - 1];
maxdiff[jj - 1] = maxdiff[jj];
maxdiff[jj] = tmp;
}
}
} else {
debug("Result omitted!");
}
}
}
l = null;
if (progress != null)
progress.setValue(i);
} catch (JDOMException e1) {
debug("Error building document " + descriptions[i]);
} catch (Exception e1) {
e1.printStackTrace();
}
}
// setting up results:
if (progress != null) {
progress.setMinimum(0);
progress.setMaximum(descriptions.length);
progress.setValue(0);
progress.setString("Sorting images");
}
// Sorting Vector ...
Collections.sort(results, new Comparator() {
public int compare(Object o1, Object o2) {
int retVal = 0;
double rel = ((ResultListEntry) o1).getRelevance() - ((ResultListEntry) o2).getRelevance();
if (rel < 0) retVal = -1;
if (rel > 0) retVal = 1;
return retVal;
}
});
} catch (Exception e) {
debug("Couldn't find descriptions ... " + e.getMessage());
e.printStackTrace(System.out);
}
return results;
}
private void debug(String message) {
if (RetrievalFrame.DEBUG)
System.out.println("[at.lux.fotoretrieval.retrievalengines.FileSystemRetrieval] " + message);
}
private boolean isValidRelation(Element relation, String obj1, String obj2, java.util.List objects, boolean inverse, int numRelation) {
boolean isValid = false;
if (inverse) debug("Searching for inverse relation");
Namespace mpeg7 = relation.getNamespace();
String src = relation.getAttributeValue("source");
String tgt = relation.getAttributeValue("target");
Element target = null;
Element source = null;
for (Iterator iterator = objects.iterator(); iterator.hasNext();) {
Element obj = (Element) iterator.next();
String id = obj.getAttributeValue("id");
if (id != null) {
if (tgt.substring(1).equals(id)) {
target = obj;
// debug("Target: " + obj.getChild("Label", mpeg7).getChildTextTrim("Name", mpeg7));
}
if (src.substring(1).equals(id)) {
source = obj;
// debug("Source: " + obj.getChild("Label", mpeg7).getChildTextTrim("Name", mpeg7));
}
}
}
debug("Checking relation: " + relation.getAttributeValue("type") + " src: " + source.getChild("Label", mpeg7).getChildTextTrim("Name", mpeg7) + ", tgt: " + target.getChild("Label", mpeg7).getChildTextTrim("Name", mpeg7));
if (!inverse) {
debug("for source contains '" + obj1 + "' and target contains '" + obj2 + "'");
} else {
debug("for source contains '" + obj2 + "' and target contains '" + obj1 + "'");
}
if (target != null && source != null) {
int hits1 = 1;
if (!obj1.equals("*")) {
if (!inverse) {
hits1 = RetrievalToolkit.xpathQuery(source, "*[contains(descendant-or-self::node(),'" + obj1 + "')]", null).size();
} else {
hits1 += RetrievalToolkit.xpathQuery(target, "*[contains(descendant-or-self::node(),'" + obj1 + "')]", null).size();
}
}
int hits2 = 1;
if (!obj2.equals("*")) {
if (!inverse) {
hits2 = RetrievalToolkit.xpathQuery(target, "*[contains(descendant-or-self::node(),'" + obj2 + "')]", null).size();
} else {
hits2 += RetrievalToolkit.xpathQuery(source, "*[contains(descendant-or-self::node(),'" + obj2 + "')]", null).size();
}
}
if (hits1 > 0 && hits2 > 0) {
isValid = true;
if (numRelation == 1) {
if (inverse) {
matches1.add(source);
} else {
matches1.add(target);
}
} else {
if (inverse) {
isValid = matches1.contains(target);
} else {
isValid = matches1.contains(source);
}
// isValid = (matches1.contains(target) || matches1.contains(source));
}
debug("Match detected!");
}
}
return isValid;
}
}
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