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package org.singinst.uf.model;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.singinst.uf.common.LogUtil;
import org.singinst.uf.common.StringUtil;
import org.singinst.uf.math.MathUtil;
import org.singinst.uf.presenter.LineBounds;
import org.singinst.uf.presenter.Store;
import org.singinst.uf.view.ViewUtil;
public class ScalarValueHolder implements Evaluable {
@Override
public String toString() {
return getScalar().getKey();
}
private static final Map<String, ScalarValueHolder> store = new HashMap<String, ScalarValueHolder>();
private final List<ValueListener> valueListeners = new ArrayList<ValueListener>();
private double value;
private final ScalarSchema scalarSchema;
private double timestamp;
private Calculation calculation;
public ScalarValueHolder(ScalarSchema scalarSchema, double value) {
this.scalarSchema = scalarSchema;
try {
Store s = Store.getInstance();
if (s == null) {
LogUtil.info("ScalarValueHolder.init(): Store instance is null!");
}
if (scalarSchema == null) {
LogUtil.info("ScalarValueHolder.init(): scalarSchema is null!");
}
Double storedValue = s.get(scalarSchema.getKey());
if (storedValue == null) {
this.value = value;
} else {
this.value = storedValue;
}
} catch (Exception e) {
e.printStackTrace();
this.value = value;
}
}
public synchronized void setValueFromUser(double requestedValue) {
double fromDisplay = getScalar().getBounds().toDisplay().invert(requestedValue);
setValue(fromDisplay);
}
public synchronized void setValue(double requestedValue) {
double constrainedValue = constrain(requestedValue);
timestamp = System.currentTimeMillis();
this.value = constrainedValue;
notifyListeners();
LogUtil.info("storing with key \"" + scalarSchema.getKey() + "\" and value of "+value);
try {
Store s = Store.getInstance();
s.put(scalarSchema.getKey(), value);
} catch (Exception e) {
e.printStackTrace();
}
}
public void notifyListeners() {
for (ValueListener valueListener : valueListeners) {
valueListener.fireUpdate(value);
}
}
private double constrain(double requestedValue) {
double rounded = MathUtil.round(requestedValue, ScalarSchema.getMaxDecimalDigits());
LineBounds boundsConstraint = getScalar().getBoundsConstraint();
if (boundsConstraint != null) {
return boundsConstraint.constrain(rounded);
} else {
return rounded;
}
}
public void addUpdateListener(ValueListener valueListener) {
valueListeners.add(valueListener);
valueListener.fireUpdate(getCachedValue());
}
public void unshiftUpdateListener(ValueListener valueListener) {
valueListeners.add(0, valueListener);
valueListener.fireUpdate(getCachedValue());
}
public static ScalarValueHolder findById(ScalarSchema scalarSchema) {
String key = scalarSchema.getKey();
ScalarValueHolder retVal = store.get(key);
if (retVal == null) {
LineBounds bounds = scalarSchema.getLineBounds();
retVal = new ScalarValueHolder(scalarSchema, bounds.getMidpoint());
store.put(key, retVal);
}
return retVal;
}
public synchronized double getValue() {
if (calculation != null && needsCalc(new NeedsCalcCache())) {
calculation.getHtmlConsole().setLength(0);
setValue(calculation.evaluate());
}
return value;
}
public synchronized double getCachedValue() {
return value;
}
private static String constructKey(String namespace, String name) {
return namespace + "." + name;
}
public static ScalarValueHolder findById(String namespace, String name) {
String key = constructKey(namespace, name);
return findById(key);
}
public static ScalarValueHolder findById(String key) {
ScalarValueHolder scalarValueHolder = store.get(key);
if (scalarValueHolder == null) {
throw new NullPointerException("Key not found: " + key + "; available keys are: " + store.keySet());
} else {
return scalarValueHolder;
}
}
public static Calculation getCalculation(String namespace, String name) {
return findById(namespace, name).getCalculation();
}
public synchronized boolean needsCalc(NeedsCalcCache needsCalcCache) {
if (getScalar().getDependencies().isEmpty()) {
return false;
}
if (timestamp == 0) {
return true;
}
Set<ScalarValueHolder> otherConjectures = new HashSet<ScalarValueHolder>();
for (NodeMetadata nodeMetadata : getScalar().getDependencies()) {
otherConjectures.addAll(nodeMetadata.getScalarValueHolders());
// for (ScalarSchema otherScalar : nodeMetadata.getScalars()) {
// otherConjectures.add(otherScalar.getScalarValueHolder());
// }
for (ScalarRelation relation : nodeMetadata.getScalarRelations()) {
otherConjectures.addAll(relation.getScalarValues());
}
}
for (ScalarValueHolder otherConjecture : otherConjectures) {
if (needsCalcCache.needsCalc(otherConjecture) || timestamp < otherConjecture.timestamp) {
return true;
}
}
return false;
}
public void setCalculation(Calculation calculation) {
this.calculation = calculation;
}
public Calculation getCalculation() {
return calculation;
}
public double evaluate(StringBuilder htmlConsole) {
double retVal = getValue();
if (calculation != null) {
// String percentage = MathUtil.round(retVal * 100, 2) + "%"; //FIXME
// htmlConsole.append(calculation.getDescription() + " = " + percentage + "<br>");
htmlConsole.append(calculation.getDescription() + " = " +
StringUtil.formatProbability(retVal) + "<br>");
}
return retVal;
}
public ScalarSchema getScalar() {
return scalarSchema;
}
public static void destroyAll() {
for (ScalarValueHolder holder: store.values()) {
holder.destroy();
}
store.clear();
}
private void destroy() {
valueListeners.clear();
}
}
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