public static <KeyType, ValueType> Map<KeyType, ValueType> toMap(
JSONValue value,
AbstractJsonEncoderDecoder<KeyType> keyEncoder,
AbstractJsonEncoderDecoder<ValueType> valueEncoder,
Style style) {
if (value == null || value.isNull() != null) {
return null;
}
switch (style) {
case DEFAULT:
case SIMPLE:
{
JSONObject object = value.isObject();
if (object == null) {
throw new DecodingException("Expected a json object, but was given: " + value);
}
HashMap<KeyType, ValueType> rc = new HashMap<KeyType, ValueType>(object.size() * 2);
for (String key : object.keySet()) {
rc.put(keyEncoder.decode(key), valueEncoder.decode(object.get(key)));
}
return rc;
}
case JETTISON_NATURAL:
{
JSONObject object = value.isObject();
if (object == null) {
throw new DecodingException("Expected a json object, but was given: " + value);
}
value = object.get("entry");
if (value == null) {
throw new DecodingException("Expected an entry array not found");
}
JSONArray entries = value.isArray();
if (entries == null) {
throw new DecodingException("Expected an entry array, but was given: " + value);
}
HashMap<KeyType, ValueType> rc = new HashMap<KeyType, ValueType>(object.size() * 2);
for (int i = 0; i < entries.size(); i++) {
JSONObject entry = entries.get(i).isObject();
if (entry == null)
throw new DecodingException("Expected an entry object, but was given: " + value);
JSONValue key = entry.get("key");
if (key == null) throw new DecodingException("Expected an entry key field not found");
JSONString k = key.isString();
if (k == null)
throw new DecodingException(
"Expected an entry key to be a string, but was given: " + value);
rc.put(keyEncoder.decode(k.stringValue()), valueEncoder.decode(entry.get("value")));
}
return rc;
}
default:
throw new UnsupportedOperationException(
"The encoding style is not yet supported: " + style.name());
}
}
