Exemplo n.º 1
0
 /**
  * Get the enum value associated with a key.
  *
  * @param clazz The type of enum to retrieve.
  * @param index The index must be between 0 and length() - 1.
  * @param defaultValue The default in case the value is not found
  * @return The enum value at the index location or defaultValue if the value is not found or
  *     cannot be assigned to clazz
  */
 public <E extends Enum<E>> E optEnum(Class<E> clazz, int index, E defaultValue) {
   try {
     Object val = this.opt(index);
     if (JSONObject.NULL.equals(val)) {
       return defaultValue;
     }
     if (clazz.isAssignableFrom(val.getClass())) {
       // we just checked it!
       @SuppressWarnings("unchecked")
       E myE = (E) val;
       return myE;
     }
     return Enum.valueOf(clazz, val.toString());
   } catch (IllegalArgumentException | NullPointerException e) {
     return defaultValue;
   }
 }
Exemplo n.º 2
0
 /**
  * Get the optional string associated with an index. The defaultValue is returned if the key is
  * not found.
  *
  * @param index The index must be between 0 and length() - 1.
  * @param defaultValue The default value.
  * @return A String value.
  */
 public String optString(int index, String defaultValue) {
   Object object = this.opt(index);
   return JSONObject.NULL.equals(object) ? defaultValue : object.toString();
 }
Exemplo n.º 3
0
 /**
  * Determine if the value is null.
  *
  * @param index The index must be between 0 and length() - 1.
  * @return true if the value at the index is null, or if there is no value.
  */
 public boolean isNull(int index) {
   return JSONObject.NULL.equals(this.opt(index));
 }