public static <Type> JSONValue toJSON(
Map<String, Type> value, AbstractJsonEncoderDecoder<Type> encoder, Style style) {
if (value == null) {
return JSONNull.getInstance();
}
switch (style) {
case DEFAULT:
case SIMPLE:
{
JSONObject rc = new JSONObject();
for (Entry<String, Type> t : value.entrySet()) {
rc.put(t.getKey(), encoder.encode(t.getValue()));
}
return rc;
}
case JETTISON_NATURAL:
{
JSONObject rc = new JSONObject();
JSONArray entries = new JSONArray();
int i = 0;
for (Entry<String, Type> t : value.entrySet()) {
JSONObject entry = new JSONObject();
entry.put("key", new JSONString(t.getKey()));
entry.put("value", encoder.encode(t.getValue()));
entries.set(i++, entry);
}
rc.put("entry", entries);
return rc;
}
default:
throw new UnsupportedOperationException(
"The encoding style is not yet suppored: " + style.name());
}
}
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());
}
}
// TODO(sbeutel): new map method to handle other key values than String
public static <KeyType, ValueType> JSONValue toJSON(
Map<KeyType, ValueType> value,
AbstractJsonEncoderDecoder<KeyType> keyEncoder,
AbstractJsonEncoderDecoder<ValueType> valueEncoder,
Style style) {
if (value == null) {
return JSONNull.getInstance();
}
switch (style) {
case DEFAULT:
case SIMPLE:
{
JSONObject rc = new JSONObject();
for (Entry<KeyType, ValueType> t : value.entrySet()) {
// TODO find a way to check only once
JSONValue k = keyEncoder.encode(t.getKey());
if (k.isString() != null) {
rc.put(k.isString().stringValue(), valueEncoder.encode(t.getValue()));
} else {
rc.put(k.toString(), valueEncoder.encode(t.getValue()));
}
}
return rc;
}
case JETTISON_NATURAL:
{
JSONObject rc = new JSONObject();
JSONArray entries = new JSONArray();
int i = 0;
for (Entry<KeyType, ValueType> t : value.entrySet()) {
JSONObject entry = new JSONObject();
// TODO find a way to check only once
JSONValue k = keyEncoder.encode(t.getKey());
if (k.isString() != null) {
entry.put("key", k);
} else {
entry.put("key", new JSONString(k.toString()));
}
entry.put("value", valueEncoder.encode(t.getValue()));
entries.set(i++, entry);
}
rc.put("entry", entries);
return rc;
}
default:
throw new UnsupportedOperationException(
"The encoding style is not yet supported: " + style.name());
}
}
public static <Type> JSONValue toJSON(Type[] value, AbstractJsonEncoderDecoder<Type> encoder) {
if (value == null) {
return JSONNull.getInstance();
}
JSONArray rc = new JSONArray();
int i = 0;
for (Type t : value) {
rc.set(i++, encoder.encode(t));
}
return rc;
}
public static <Type> Set<Type> toSet(JSONValue value, AbstractJsonEncoderDecoder<Type> encoder) {
if (value == null || value.isNull() != null) {
return null;
}
JSONArray array = asArray(value);
HashSet<Type> rc = new HashSet<Type>(array.size() * 2);
int size = array.size();
for (int i = 0; i < size; i++) {
rc.add(encoder.decode(array.get(i)));
}
return rc;
}
public static boolean[] toArray(
JSONValue value, AbstractJsonEncoderDecoder<Boolean> encoder, boolean[] template) {
if (value == null || value.isNull() != null) {
return null;
}
JSONArray array = asArray(value);
int size = array.size();
for (int i = 0; i < size; i++) {
template[i] = encoder.decode(array.get(i));
}
return template;
}
