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 e) {
+ return defaultValue;
+ } catch (NullPointerException e) {
+ return defaultValue;
+ }
+ }
+
+
+ /**
+ * Get the optional BigInteger value associated with an index. The
+ * defaultValue is returned if there is no value for the index, or if the
+ * value is not a number and cannot be converted to a number.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @param defaultValue
+ * The default value.
+ * @return The value.
+ */
+ public BigInteger optBigInteger(int index, BigInteger defaultValue) {
+ Object val = this.opt(index);
+ if (JSONObject.NULL.equals(val)) {
+ return defaultValue;
+ }
+ if (val instanceof BigInteger){
+ return (BigInteger) val;
+ }
+ if (val instanceof BigDecimal){
+ return ((BigDecimal) val).toBigInteger();
+ }
+ if (val instanceof Double || val instanceof Float){
+ return new BigDecimal(((Number) val).doubleValue()).toBigInteger();
+ }
+ if (val instanceof Long || val instanceof Integer
+ || val instanceof Short || val instanceof Byte){
+ return BigInteger.valueOf(((Number) val).longValue());
+ }
+ try {
+ final String valStr = val.toString();
+ if(JSONObject.isDecimalNotation(valStr)) {
+ return new BigDecimal(valStr).toBigInteger();
+ }
+ return new BigInteger(valStr);
+ } catch (Exception e) {
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Get the optional BigDecimal value associated with an index. The
+ * defaultValue is returned if there is no value for the index, or if the
+ * value is not a number and cannot be converted to a number.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @param defaultValue
+ * The default value.
+ * @return The value.
+ */
+ public BigDecimal optBigDecimal(int index, BigDecimal defaultValue) {
+ Object val = this.opt(index);
+ if (JSONObject.NULL.equals(val)) {
+ return defaultValue;
+ }
+ if (val instanceof BigDecimal){
+ return (BigDecimal) val;
+ }
+ if (val instanceof BigInteger){
+ return new BigDecimal((BigInteger) val);
+ }
+ if (val instanceof Double || val instanceof Float){
+ return new BigDecimal(((Number) val).doubleValue());
+ }
+ if (val instanceof Long || val instanceof Integer
+ || val instanceof Short || val instanceof Byte){
+ return new BigDecimal(((Number) val).longValue());
+ }
+ try {
+ return new BigDecimal(val.toString());
+ } catch (Exception e) {
+ return defaultValue;
+ }
+ }
+
+ /**
+ * Get the optional JSONArray associated with an index.
+ *
+ * @param index
+ * subscript
+ * @return A JSONArray value, or null if the index has no value, or if the
+ * value is not a JSONArray.
+ */
+ public JSONArray optJSONArray(int index) {
+ Object o = this.opt(index);
+ return o instanceof JSONArray ? (JSONArray) o : null;
+ }
+
+ /**
+ * Get the optional JSONObject associated with an index. Null is returned if
+ * the key is not found, or null if the index has no value, or if the value
+ * is not a JSONObject.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @return A JSONObject value.
+ */
+ public JSONObject optJSONObject(int index) {
+ Object o = this.opt(index);
+ return o instanceof JSONObject ? (JSONObject) o : null;
+ }
+
+ /**
+ * Get the optional long value associated with an index. Zero is returned if
+ * there is no value for the index, or if the value is not a number and
+ * cannot be converted to a number.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @return The value.
+ */
+ public long optLong(int index) {
+ return this.optLong(index, 0);
+ }
+
+ /**
+ * Get the optional long value associated with an index. The defaultValue is
+ * returned if there is no value for the index, or if the value is not a
+ * number and cannot be converted to a number.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @param defaultValue
+ * The default value.
+ * @return The value.
+ */
+ public long optLong(int index, long defaultValue) {
+ Object val = this.opt(index);
+ if (JSONObject.NULL.equals(val)) {
+ return defaultValue;
+ }
+ if (val instanceof Number){
+ return ((Number) val).longValue();
+ }
+
+ if (val instanceof String) {
+ try {
+ return new BigDecimal(val.toString()).longValue();
+ } catch (Exception e) {
+ return defaultValue;
+ }
+ }
+ return defaultValue;
+ }
+
+ /**
+ * Get an optional {@link Number} value associated with a key, or null
+ * if there is no such key or if the value is not a number. If the value is a string,
+ * an attempt will be made to evaluate it as a number ({@link BigDecimal}). This method
+ * would be used in cases where type coercion of the number value is unwanted.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @return An object which is the value.
+ */
+ public Number optNumber(int index) {
+ return this.optNumber(index, null);
+ }
+
+ /**
+ * Get an optional {@link Number} value associated with a key, or the default if there
+ * is no such key or if the value is not a number. If the value is a string,
+ * an attempt will be made to evaluate it as a number ({@link BigDecimal}). This method
+ * would be used in cases where type coercion of the number value is unwanted.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @param defaultValue
+ * The default.
+ * @return An object which is the value.
+ */
+ public Number optNumber(int index, Number defaultValue) {
+ Object val = this.opt(index);
+ if (JSONObject.NULL.equals(val)) {
+ return defaultValue;
+ }
+ if (val instanceof Number){
+ return (Number) val;
+ }
+
+ if (val instanceof String) {
+ try {
+ return JSONObject.stringToNumber((String) val);
+ } catch (Exception e) {
+ return defaultValue;
+ }
+ }
+ return defaultValue;
+ }
+
+ /**
+ * Get the optional string value associated with an index. It returns an
+ * empty string if there is no value at that index. If the value is not a
+ * string and is not null, then it is converted to a string.
+ *
+ * @param index
+ * The index must be between 0 and length() - 1.
+ * @return A String value.
+ */
+ public String optString(int index) {
+ return this.optString(index, "");
+ }
+
+ /**
+ * 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();
+ }
+
+ /**
+ * Append a boolean value. This increases the array's length by one.
+ *
+ * @param value
+ * A boolean value.
+ * @return this.
+ */
+ public JSONArray put(boolean value) {
+ return this.put(value ? Boolean.TRUE : Boolean.FALSE);
+ }
+
+ /**
+ * Put a value in the JSONArray, where the value will be a JSONArray which
+ * is produced from a Collection.
+ *
+ * @param value
+ * A Collection value.
+ * @return this.
+ * @throws JSONException
+ * If the value is non-finite number.
+ */
+ public JSONArray put(Collection value) {
+ return this.put(new JSONArray(value));
+ }
+
+ /**
+ * Append a double value. This increases the array's length by one.
+ *
+ * @param value
+ * A double value.
+ * @return this.
+ * @throws JSONException
+ * if the value is not finite.
+ */
+ public JSONArray put(double value) throws JSONException {
+ return this.put(Double.valueOf(value));
+ }
+
+ /**
+ * Append a float value. This increases the array's length by one.
+ *
+ * @param value
+ * A float value.
+ * @return this.
+ * @throws JSONException
+ * if the value is not finite.
+ */
+ public JSONArray put(float value) throws JSONException {
+ return this.put(Float.valueOf(value));
+ }
+
+ /**
+ * Append an int value. This increases the array's length by one.
+ *
+ * @param value
+ * An int value.
+ * @return this.
+ */
+ public JSONArray put(int value) {
+ return this.put(Integer.valueOf(value));
+ }
+
+ /**
+ * Append an long value. This increases the array's length by one.
+ *
+ * @param value
+ * A long value.
+ * @return this.
+ */
+ public JSONArray put(long value) {
+ return this.put(Long.valueOf(value));
+ }
+
+ /**
+ * Put a value in the JSONArray, where the value will be a JSONObject which
+ * is produced from a Map.
+ *
+ * @param value
+ * A Map value.
+ * @return this.
+ * @throws JSONException
+ * If a value in the map is non-finite number.
+ * @throws NullPointerException
+ * If a key in the map is null
+ */
+ public JSONArray put(Map value) {
+ return this.put(new JSONObject(value));
+ }
+
+ /**
+ * Append an object value. This increases the array's length by one.
+ *
+ * @param value
+ * An object value. The value should be a Boolean, Double,
+ * Integer, JSONArray, JSONObject, Long, or String, or the
+ * JSONObject.NULL object.
+ * @return this.
+ * @throws JSONException
+ * If the value is non-finite number.
+ */
+ public JSONArray put(Object value) {
+ JSONObject.testValidity(value);
+ this.myArrayList.add(value);
+ return this;
+ }
+
+ /**
+ * Put or replace a boolean value in the JSONArray. If the index is greater
+ * than the length of the JSONArray, then null elements will be added as
+ * necessary to pad it out.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * A boolean value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative.
+ */
+ public JSONArray put(int index, boolean value) throws JSONException {
+ return this.put(index, value ? Boolean.TRUE : Boolean.FALSE);
+ }
+
+ /**
+ * Put a value in the JSONArray, where the value will be a JSONArray which
+ * is produced from a Collection.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * A Collection value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative or if the value is non-finite.
+ */
+ public JSONArray put(int index, Collection value) throws JSONException {
+ return this.put(index, new JSONArray(value));
+ }
+
+ /**
+ * Put or replace a double value. If the index is greater than the length of
+ * the JSONArray, then null elements will be added as necessary to pad it
+ * out.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * A double value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative or if the value is non-finite.
+ */
+ public JSONArray put(int index, double value) throws JSONException {
+ return this.put(index, Double.valueOf(value));
+ }
+
+ /**
+ * Put or replace a float value. If the index is greater than the length of
+ * the JSONArray, then null elements will be added as necessary to pad it
+ * out.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * A float value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative or if the value is non-finite.
+ */
+ public JSONArray put(int index, float value) throws JSONException {
+ return this.put(index, Float.valueOf(value));
+ }
+
+ /**
+ * Put or replace an int value. If the index is greater than the length of
+ * the JSONArray, then null elements will be added as necessary to pad it
+ * out.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * An int value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative.
+ */
+ public JSONArray put(int index, int value) throws JSONException {
+ return this.put(index, Integer.valueOf(value));
+ }
+
+ /**
+ * Put or replace a long value. If the index is greater than the length of
+ * the JSONArray, then null elements will be added as necessary to pad it
+ * out.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * A long value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative.
+ */
+ public JSONArray put(int index, long value) throws JSONException {
+ return this.put(index, Long.valueOf(value));
+ }
+
+ /**
+ * Put a value in the JSONArray, where the value will be a JSONObject that
+ * is produced from a Map.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * The Map value.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative or if the the value is an invalid
+ * number.
+ * @throws NullPointerException
+ * If a key in the map is null
+ */
+ public JSONArray put(int index, Map value) throws JSONException {
+ this.put(index, new JSONObject(value));
+ return this;
+ }
+
+ /**
+ * Put or replace an object value in the JSONArray. If the index is greater
+ * than the length of the JSONArray, then null elements will be added as
+ * necessary to pad it out.
+ *
+ * @param index
+ * The subscript.
+ * @param value
+ * The value to put into the array. The value should be a
+ * Boolean, Double, Integer, JSONArray, JSONObject, Long, or
+ * String, or the JSONObject.NULL object.
+ * @return this.
+ * @throws JSONException
+ * If the index is negative or if the the value is an invalid
+ * number.
+ */
+ public JSONArray put(int index, Object value) throws JSONException {
+ if (index < 0) {
+ throw new JSONException("JSONArray[" + index + "] not found.");
+ }
+ if (index < this.length()) {
+ JSONObject.testValidity(value);
+ this.myArrayList.set(index, value);
+ return this;
+ }
+ if(index == this.length()){
+ // simple append
+ return this.put(value);
+ }
+ // if we are inserting past the length, we want to grow the array all at once
+ // instead of incrementally.
+ this.myArrayList.ensureCapacity(index + 1);
+ while (index != this.length()) {
+ // we don't need to test validity of NULL objects
+ this.myArrayList.add(JSONObject.NULL);
+ }
+ return this.put(value);
+ }
+
+ /**
+ * Creates a JSONPointer using an initialization string and tries to
+ * match it to an item within this JSONArray. For example, given a
+ * JSONArray initialized with this document:
+ *
+ * [
+ * {"b":"c"}
+ * ]
+ *
+ * and this JSONPointer string:
+ *
+ * "/0/b"
+ *
+ * Then this method will return the String "c"
+ * A JSONPointerException may be thrown from code called by this method.
+ *
+ * @param jsonPointer string that can be used to create a JSONPointer
+ * @return the item matched by the JSONPointer, otherwise null
+ */
+ public Object query(String jsonPointer) {
+ return query(new JSONPointer(jsonPointer));
+ }
+
+ /**
+ * Uses a uaer initialized JSONPointer and tries to
+ * match it to an item whithin this JSONArray. For example, given a
+ * JSONArray initialized with this document:
+ *
+ * [
+ * {"b":"c"}
+ * ]
+ *
+ * and this JSONPointer:
+ *
+ * "/0/b"
+ *
+ * Then this method will return the String "c"
+ * A JSONPointerException may be thrown from code called by this method.
+ *
+ * @param jsonPointer string that can be used to create a JSONPointer
+ * @return the item matched by the JSONPointer, otherwise null
+ */
+ public Object query(JSONPointer jsonPointer) {
+ return jsonPointer.queryFrom(this);
+ }
+
+ /**
+ * Queries and returns a value from this object using {@code jsonPointer}, or
+ * returns null if the query fails due to a missing key.
+ *
+ * @param jsonPointer the string representation of the JSON pointer
+ * @return the queried value or {@code null}
+ * @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
+ */
+ public Object optQuery(String jsonPointer) {
+ return optQuery(new JSONPointer(jsonPointer));
+ }
+
+ /**
+ * Queries and returns a value from this object using {@code jsonPointer}, or
+ * returns null if the query fails due to a missing key.
+ *
+ * @param jsonPointer The JSON pointer
+ * @return the queried value or {@code null}
+ * @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
+ */
+ public Object optQuery(JSONPointer jsonPointer) {
+ try {
+ return jsonPointer.queryFrom(this);
+ } catch (JSONPointerException e) {
+ return null;
+ }
+ }
+
+ /**
+ * Remove an index and close the hole.
+ *
+ * @param index
+ * The index of the element to be removed.
+ * @return The value that was associated with the index, or null if there
+ * was no value.
+ */
+ public Object remove(int index) {
+ return index >= 0 && index < this.length()
+ ? this.myArrayList.remove(index)
+ : null;
+ }
+
+ /**
+ * Determine if two JSONArrays are similar.
+ * They must contain similar sequences.
+ *
+ * @param other The other JSONArray
+ * @return true if they are equal
+ */
+ public boolean similar(Object other) {
+ if (!(other instanceof JSONArray)) {
+ return false;
+ }
+ int len = this.length();
+ if (len != ((JSONArray)other).length()) {
+ return false;
+ }
+ for (int i = 0; i < len; i += 1) {
+ Object valueThis = this.myArrayList.get(i);
+ Object valueOther = ((JSONArray)other).myArrayList.get(i);
+ if(valueThis == valueOther) {
+ continue;
+ }
+ if(valueThis == null) {
+ return false;
+ }
+ if (valueThis instanceof JSONObject) {
+ if (!((JSONObject)valueThis).similar(valueOther)) {
+ return false;
+ }
+ } else if (valueThis instanceof JSONArray) {
+ if (!((JSONArray)valueThis).similar(valueOther)) {
+ return false;
+ }
+ } else if (!valueThis.equals(valueOther)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Produce a JSONObject by combining a JSONArray of names with the values of
+ * this JSONArray.
+ *
+ * @param names
+ * A JSONArray containing a list of key strings. These will be
+ * paired with the values.
+ * @return A JSONObject, or null if there are no names or if this JSONArray
+ * has no values.
+ * @throws JSONException
+ * If any of the names are null.
+ */
+ public JSONObject toJSONObject(JSONArray names) throws JSONException {
+ if (names == null || names.isEmpty() || this.isEmpty()) {
+ return null;
+ }
+ JSONObject jo = new JSONObject(names.length());
+ for (int i = 0; i < names.length(); i += 1) {
+ jo.put(names.getString(i), this.opt(i));
+ }
+ return jo;
+ }
+
+ /**
+ * Make a JSON text of this JSONArray. For compactness, no unnecessary
+ * whitespace is added. If it is not possible to produce a syntactically
+ * correct JSON text then null will be returned instead. This could occur if
+ * the array contains an invalid number.
+ *
+ * Warning: This method assumes that the data structure is acyclical.
+ *
+ *
+ * @return a printable, displayable, transmittable representation of the
+ * array.
+ */
+ @Override
+ public String toString() {
+ try {
+ return this.toString(0);
+ } catch (Exception e) {
+ return null;
+ }
+ }
+
+ /**
+ * Make a pretty-printed JSON text of this JSONArray.
+ *
+ *
If indentFactor > 0 and the {@link JSONArray} has only
+ * one element, then the array will be output on a single line:
+ *
{@code [1]}
+ *
+ * If an array has 2 or more elements, then it will be output across
+ * multiple lines:
{@code
+ * [
+ * 1,
+ * "value 2",
+ * 3
+ * ]
+ * }
+ *
+ * Warning: This method assumes that the data structure is acyclical.
+ *
+ *
+ * @param indentFactor
+ * The number of spaces to add to each level of indentation.
+ * @return a printable, displayable, transmittable representation of the
+ * object, beginning with [ (left
+ * bracket) and ending with ]
+ * (right bracket) .
+ * @throws JSONException
+ */
+ public String toString(int indentFactor) throws JSONException {
+ StringWriter sw = new StringWriter();
+ synchronized (sw.getBuffer()) {
+ return this.write(sw, indentFactor, 0).toString();
+ }
+ }
+
+ /**
+ * Write the contents of the JSONArray as JSON text to a writer. For
+ * compactness, no whitespace is added.
+ *
+ * Warning: This method assumes that the data structure is acyclical.
+ *
+ *
+ * @return The writer.
+ * @throws JSONException
+ */
+ public Writer write(Writer writer) throws JSONException {
+ return this.write(writer, 0, 0);
+ }
+
+ /**
+ * Write the contents of the JSONArray as JSON text to a writer.
+ *
+ *
If indentFactor > 0 and the {@link JSONArray} has only
+ * one element, then the array will be output on a single line:
+ *
{@code [1]}
+ *
+ * If an array has 2 or more elements, then it will be output across
+ * multiple lines:
{@code
+ * [
+ * 1,
+ * "value 2",
+ * 3
+ * ]
+ * }
+ *
+ * Warning: This method assumes that the data structure is acyclical.
+ *
+ *
+ * @param writer
+ * Writes the serialized JSON
+ * @param indentFactor
+ * The number of spaces to add to each level of indentation.
+ * @param indent
+ * The indentation of the top level.
+ * @return The writer.
+ * @throws JSONException
+ */
+ public Writer write(Writer writer, int indentFactor, int indent)
+ throws JSONException {
+ try {
+ boolean commanate = false;
+ int length = this.length();
+ writer.write('[');
+
+ if (length == 1) {
+ try {
+ JSONObject.writeValue(writer, this.myArrayList.get(0),
+ indentFactor, indent);
+ } catch (Exception e) {
+ throw new JSONException("Unable to write JSONArray value at index: 0", e);
+ }
+ } else if (length != 0) {
+ final int newindent = indent + indentFactor;
+
+ for (int i = 0; i < length; i += 1) {
+ if (commanate) {
+ writer.write(',');
+ }
+ if (indentFactor > 0) {
+ writer.write('\n');
+ }
+ JSONObject.indent(writer, newindent);
+ try {
+ JSONObject.writeValue(writer, this.myArrayList.get(i),
+ indentFactor, newindent);
+ } catch (Exception e) {
+ throw new JSONException("Unable to write JSONArray value at index: " + i, e);
+ }
+ commanate = true;
+ }
+ if (indentFactor > 0) {
+ writer.write('\n');
+ }
+ JSONObject.indent(writer, indent);
+ }
+ writer.write(']');
+ return writer;
+ } catch (IOException e) {
+ throw new JSONException(e);
+ }
+ }
+
+ /**
+ * Returns a java.util.List containing all of the elements in this array.
+ * If an element in the array is a JSONArray or JSONObject it will also
+ * be converted.
+ *
+ * Warning: This method assumes that the data structure is acyclical.
+ *
+ * @return a java.util.List containing the elements of this array
+ */
+ public List toList() {
+ List results = new ArrayList(this.myArrayList.size());
+ for (Object element : this.myArrayList) {
+ if (element == null || JSONObject.NULL.equals(element)) {
+ results.add(null);
+ } else if (element instanceof JSONArray) {
+ results.add(((JSONArray) element).toList());
+ } else if (element instanceof JSONObject) {
+ results.add(((JSONObject) element).toMap());
+ } else {
+ results.add(element);
+ }
+ }
+ return results;
+ }
+
+ /**
+ * Check if JSONArray is empty.
+ *
+ * @return true if JSONArray is empty, otherwise false.
+ */
+ public boolean isEmpty() {
+ return myArrayList.isEmpty();
+ }
+
+}