/**
* Compares this map with another map for equality of their stored entries.
*
* @param other an <code>Object</code> value
* @return true if the maps are identical
*/
public boolean equals(Object other) {
if (_map.equals(other)) {
return true; // comparing two trove maps
} else if (other instanceof Map) {
Map that = (Map) other;
if (that.size() != _map.size()) {
return false; // different sizes, no need to compare
} else { // now we have to do it the hard way
Iterator it = that.entrySet().iterator();
for (int i = that.size(); i-- > 0; ) {
Map.Entry e = (Map.Entry) it.next();
Object key = e.getKey();
Object val = e.getValue();
if (key instanceof Integer && val instanceof Integer) {
int k = unwrapKey(key);
float v = unwrapValue(val);
if (_map.containsKey(k) && v == _map.get(k)) {
// match, ok to continue
} else {
return false; // no match: we're done
}
} else {
return false; // different type in other map
}
}
return true; // all entries match
}
} else {
return false;
}
}
/**
* Retrieves the value for <tt>key</tt>
*
* @param key an <code>Object</code> value
* @return the value of <tt>key</tt> or null if no such mapping exists.
*/
public Object get(Object key) {
int k = unwrapKey(key);
float v = _map.get(k);
// 0 may be a false positive since primitive maps
// cannot return null, so we have to do an extra
// check here.
if (v == 0) {
return _map.containsKey(k) ? wrapValue(v) : null;
} else {
return wrapValue(v);
}
}
/**
* Checks for the present of <tt>key</tt> in the keys of the map.
*
* @param key an <code>Object</code> value
* @return a <code>boolean</code> value
*/
public boolean containsKey(Object key) {
return _map.containsKey(unwrapKey(key));
}