@Override
public Object getValue(final Object object, final String name) {
if (object instanceof Position) {
final Position position = (Position) object;
if ("trade".equals(name)) {
final Collection<Trade> trades = position.getTrades();
if (trades.size() == 1) {
return trades.iterator().next();
} else if (trades.isEmpty()) {
return UserExpression.NA;
} else {
return new AnyTradeAttribute(trades);
}
} else {
Object value = position.getAttributes().get(name);
if (value != null) {
return value;
} else {
for (Trade trade : position.getTrades()) {
value = trade.getAttributes().get(name);
if (value != null) {
return value;
}
}
return UserExpression.NA;
}
}
} else if (object instanceof AnyTradeAttribute) {
final AnyTradeAttribute trades = (AnyTradeAttribute) object;
for (Trade trade : trades.getTrades()) {
final Object value = trade.getAttributes().get(name);
if (value != null) {
return value;
}
}
return UserExpression.NA;
} else if (object instanceof Trade) {
final Trade trade = (Trade) object;
final Object value = trade.getAttributes().get(name);
if (value != null) {
return value;
} else {
return UserExpression.NA;
}
} else {
return UserExpression.NA;
}
}
@Override
public Map<String, String> getAttributes() {
Map<String, String> allAttributes = Maps.newHashMap();
for (Trade trade : _trades) {
allAttributes.putAll(trade.getAttributes());
}
return allAttributes;
}