/** Replaces a figure in the drawing without removing it from the drawing. */
public synchronized void replace(Figure figure, Figure replacement) {
int index = fFigures.indexOf(figure);
if (index != -1) {
replacement.addToContainer(this); // will invalidate figure
figure.changed();
fFigures.setElementAt(replacement, index);
}
}
/**
* This method returns an array of all the tables referenced in the datastore.
*
* @param updateable True if the table list should only include updateable tables and false if it
* should include all.
*/
public String[] getTableList(boolean updateable) {
DSColumnDescriptor col = null;
Vector tables = new Vector();
Vector pkey = new Vector();
for (int i = 0; i < _desc.getColumnCount(); i++) {
col = _desc.getColumn(i);
String tableName = col.getTable();
if (tableName == null) tableName = _desc.getDefaultTable();
if ((!updateable) || col.isUpdateable()) {
boolean found = false;
for (int j = 0; j < tables.size(); j++) {
if ((tables.elementAt(j)).equals(tableName)) {
if (col.isPrimaryKey()) pkey.setElementAt(new Boolean(true), j);
found = true;
break;
}
}
if (!found && tableName != null) {
tables.addElement(tableName);
pkey.addElement(new Boolean(col.isPrimaryKey()));
}
}
}
if (updateable) {
for (int i = pkey.size() - 1; i > -1; i--) {
if (!((Boolean) pkey.elementAt(i)).booleanValue()) tables.removeElementAt(i);
}
} else {
for (int i = 0; i < getAliasCount(); i++) {
try {
String table = getTable(i);
boolean found = false;
for (int j = 0; j < tables.size(); j++) {
if ((tables.elementAt(j)).equals(table)) found = true;
}
if (!found && table != null) tables.addElement(table);
} catch (Exception e) {
}
}
}
String retVal[] = new String[tables.size()];
tables.copyInto(retVal);
return retVal;
}
/**
* A nice ol' bubble sort. This is used because it has a passable performance when the list starts
* off sorted.
*/
public void sort() {
synchronized (this) {
boolean swap;
do {
swap = false;
for (int i = 1; i < tracks.size(); i++) {
Track lastTrack = (Track) tracks.elementAt(i - 1);
Track track = (Track) tracks.elementAt(i);
if (compare(lastTrack, track) > 0) {
tracks.setElementAt(track, i - 1);
tracks.setElementAt(lastTrack, i);
swap = true;
}
}
} while (swap);
}
}
/**
* INTERNAL This method iterates through a collection and gets the values from the objects to
* conform in an in-memory query. Creation date: (1/19/01 1:18:27 PM)
*/
public Object valuesFromCollection(
Object object, AbstractSession session, int valueHolderPolicy, boolean isObjectUnregistered) {
// in case the mapping is null - this can happen if a query key is being used
// In this case, check for the query key and find it's mapping.
boolean readMappingFromQueryKey = false;
if (getMapping() == null) {
getMappingFromQueryKey();
readMappingFromQueryKey = true;
}
// For bug 2780817 get the mapping directly from the object. In EJB 2.0
// inheritance, each child must override mappings defined in an abstract
// class with its own.
DatabaseMapping mapping = this.mapping;
ClassDescriptor descriptor = mapping.getDescriptor();
if (descriptor.hasInheritance() && (descriptor.getJavaClass() != object.getClass())) {
mapping =
session
.getDescriptor(object.getClass())
.getObjectBuilder()
.getMappingForAttributeName(getName());
descriptor = mapping.getDescriptor();
}
// fetch group support
if (descriptor.hasFetchGroupManager()) {
FetchGroupManager fetchGroupManager = descriptor.getFetchGroupManager();
if (fetchGroupManager.isPartialObject(object)
&& (!fetchGroupManager.isAttributeFetched(object, mapping.getAttributeName()))) {
// the conforming attribute is not fetched, simply throw exception
throw QueryException.cannotConformUnfetchedAttribute(mapping.getAttributeName());
}
}
if (mapping.isDirectToFieldMapping()) {
return ((AbstractDirectMapping) mapping).valueFromObject(object, mapping.getField(), session);
} else if (mapping.isForeignReferenceMapping()) {
// CR 3677 integration of a ValueHolderPolicy
Object valueFromMapping = mapping.getAttributeValueFromObject(object);
if (!((ForeignReferenceMapping) mapping)
.getIndirectionPolicy()
.objectIsInstantiated(valueFromMapping)) {
if (valueHolderPolicy != InMemoryQueryIndirectionPolicy.SHOULD_TRIGGER_INDIRECTION) {
// If the client wishes us to trigger the indirection then we should do so,
// Other wise throw the exception
throw QueryException
.mustInstantiateValueholders(); // you should instantiate the valueholder for this to
// work
}
// maybe we should throw this exception from the start, to save time
}
Object valueToIterate = mapping.getRealAttributeValueFromObject(object, session);
UnitOfWorkImpl uow = isObjectUnregistered ? (UnitOfWorkImpl) session : null;
// First check that object in fact is unregistered.
// toDo: ?? Why is this commented out? Why are we supporting the unregistered thing at all?
// Does not seem to be any public API for this, nor every used internally?
// if (isObjectUnregistered) {
// isObjectUnregistered = !uow.getCloneMapping().containsKey(object);
// }
if (mapping.isCollectionMapping() && (valueToIterate != null)) {
// For bug 2766379 must use the correct version of vectorFor to
// unwrap the result same time.
valueToIterate = mapping.getContainerPolicy().vectorFor(valueToIterate, session);
// toDo: If the value is empty, need to support correct inner/outer join filtering
// symantics.
// For CR 2612601, try to partially replace the result with already
// registered objects.
if (isObjectUnregistered && (uow.getCloneMapping().get(object) == null)) {
Vector objectValues = (Vector) valueToIterate;
for (int i = 0; i < objectValues.size(); i++) {
Object original = objectValues.elementAt(i);
Object clone =
uow.getIdentityMapAccessorInstance()
.getIdentityMapManager()
.getFromIdentityMap(original);
if (clone != null) {
objectValues.setElementAt(clone, i);
}
}
}
// For CR 2612601, conforming without registering, a query could be
// bob.get("address").get("city").equal("Ottawa"); where the address
// has been registered and modified in the UOW, but bob has not. Thus
// even though bob does not point to the modified address now, it will
// as soon as it is registered, so should point to it here.
} else if (isObjectUnregistered && (uow.getCloneMapping().get(object) == null)) {
Object clone =
uow.getIdentityMapAccessorInstance()
.getIdentityMapManager()
.getFromIdentityMap(valueToIterate);
if (clone != null) {
valueToIterate = clone;
}
}
return valueToIterate;
} else if (mapping.isAggregateMapping()) {
Object aggregateValue = mapping.getAttributeValueFromObject(object);
// Bug 3995468 - if this query key is to a mapping in an aggregate object, get the object from
// actual mapping rather than the aggregate mapping
while (readMappingFromQueryKey
&& mapping.isAggregateObjectMapping()
&& !((AggregateObjectMapping) mapping)
.getReferenceClass()
.equals(queryKey.getDescriptor().getJavaClass())) {
mapping =
mapping
.getReferenceDescriptor()
.getObjectBuilder()
.getMappingForField(((DirectQueryKey) queryKey).getField());
aggregateValue = mapping.getRealAttributeValueFromObject(aggregateValue, session);
}
return aggregateValue;
} else {
throw QueryException.cannotConformExpression();
}
}
public static Vector<Double> trainNode(
String filename,
int outputRepresentation,
String inputRepresentation,
int filter,
double learningRate,
int epochs) {
Vector<Double> node = null; // initialize node to null
double error = 1; // initialize error
double output = 0; // initialize output
Vector<Double> trainError = new Vector<Double>();
double meansq = 0;
String binTarget = "";
String binaryRep = "";
int target;
openFile(filename); // open our file for training
firstRead = true;
int targetCounter = 0;
while ((target = readFileIntoInputVector(inputRepresentation))
!= -2) { // while we have not reached out end of file error
if (outputRepresentation == 4) {
binTarget = Integer.toBinaryString(target); // convert target to binary
int[] targetArray = new int[4]; // array to hold binary ints
for (int h = 0; h < targetArray.length; h++) { // add binary elements to int array
try {
targetArray[targetArray.length - h - 1] =
Character.digit(binTarget.charAt(binTarget.length() - h - 1), 10);
} catch (IndexOutOfBoundsException e) { // if there is empty spaces, fill with zeros
targetArray[targetArray.length - h - 1] = 0;
}
}
target = targetArray[filter];
binTarget = "";
for (int i = 0; i < targetArray.length; i++) {
binTarget = binTarget + targetArray[i];
}
}
if ((filter == target && outputRepresentation == 10) || outputRepresentation != 10) {
if (node == null) {
node = new Vector<Double>();
for (int i = 0; i < inputs.size(); i++) { // for each input
double randWeight = 1; // initialize random weight
while (randWeight > 0.15) // while out random isn't less than 0.15
randWeight = random.nextDouble(); // get a new random double
if (random.nextBoolean()) randWeight = randWeight * -1; // randomly set to negative
node.addElement(new Double(randWeight)); // store random weight
}
}
targetCounter++;
// train for number of epochs
for (int i = 0; i < epochs; i++) { // for each epoch
double weightedSum = 0; // set/reset the weighted sum to 0
for (int j = 0; j < inputs.size(); j++) {
weightedSum += (inputs.elementAt(j) * node.elementAt(j)); // calculate weighted sum
}
output = activation(weightedSum); // retrieve output
if (outputRepresentation == 1 || outputRepresentation == 10) output = output * 10;
else if (outputRepresentation == 4) { // each node must have a whole number
if (output > 0.5) output = 1;
else output = 0;
}
error = target - output; // calculate error
if (i == epochs - 1) {
if (outputRepresentation == 4) {
if (filter == 0) {
allOutputs.ensureCapacity(targetCounter);
allOutputs.add(Integer.toString((int) output));
} else {
allOutputs.set(
targetCounter - 1, allOutputs.get(targetCounter - 1) + ((int) output));
}
}
trainError.add(error);
if (Math.round(error) == 0 && outputRepresentation != 4) {
trainCountCorrect++;
} else if (outputRepresentation == 4 && filter == 3) {
if (allOutputs.get(targetCounter - 1).equals(binTarget)) {
trainCountCorrect++;
}
}
}
for (int k = 0; k < inputs.size(); k++) { // for each input
double derivative =
(1.64872 * Math.exp(weightedSum))
/ (Math.pow(1.64872 + Math.exp(weightedSum), 2)); // calculate new weights
double newWeight =
node.elementAt(k)
+ (learningRate * inputs.elementAt(k) * error * derivative); // cont.
node.setElementAt(newWeight, k); // update weights
}
}
}
inputs.clear();
}
errorVect.addElement((Vector<Double>) trainError.clone());
trainError.clear();
if (outputRepresentation == 4 && filter == 3)
System.out.println(
"Training Percent: " + (100 * (double) trainCountCorrect / (double) targetCounter));
if (outputRepresentation == 10 && filter == 9)
System.out.println(
"Training Percent: " + (10 * (double) trainCountCorrect / (double) targetCounter));
if (outputRepresentation == 1)
System.out.println(
"Training Percent: " + (100 * (double) trainCountCorrect / (double) targetCounter));
closeFile();
return node; // node is now trained for an epoch
}
public void setVCardData(int index, String data) {
vCardData.setElementAt(data, index);
}