APIJSON/APIJSONORM/src/main/java/apijson/JSONArray.java at no-json-lib · APIJSON/APIJSON · GitHub

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This source code is licensed under the Apache License Version 2.0.*/

package apijson;

import java.util.*;

/**

* Custom JSONArray implementation based on ArrayList to replace com.alibaba.fastjson.JSONArray

* Maintains same API as fastjson but uses standard Java List implementation

* @author Lemon

public class JSONArray extends JSON implements List<Object> {

private static final String TAG = "JSONArray";

private ArrayList<Object> list = new ArrayList<>();

/**

* Create an empty JSONArray

public JSONArray() {

super();

}

private int initialCapacity = 10;

/**

* Create a JSONArray with initial capacity

* @param initialCapacity the initial capacity

public JSONArray(int initialCapacity) {

this.initialCapacity = initialCapacity;

this.list = new ArrayList<>(initialCapacity);

}

/**

* Create a JSONArray from a Collection

* @param collection the collection to copy from

public JSONArray(Collection<?> collection) {

super();

if (collection != null) {

addAll(collection);

}

/**

* Create a JSONArray from a JSON string

* @param json JSON string

public JSONArray(String json) {

this();

List<Object> list = JSON.parseArray(json);

if (list != null) {

addAll(list);

}

/**

* Get a JSONObject at the specified index

* @param index the index

* @return the JSONObject or null if not a JSONObject

public JSONObject getJSONObject(int index) {

if (index < 0 || index >= size()) {

return null;

}

Object obj = get(index);

if (obj instanceof JSONObject) {

return (JSONObject) obj;

}

else if (obj instanceof Map) {

return new JSONObject(obj);

}

return null;

}

/**

* Get a JSONArray at the specified index

* @param index the index

* @return the JSONArray or null if not a JSONArray

public JSONArray getJSONArray(int index) {

if (index < 0 || index >= size()) {

return null;

}

Object obj = get(index);

if (obj instanceof List) {

@SuppressWarnings("unchecked")

List<Object> list = (List<Object>) obj;

return new JSONArray(list);

} else if (obj instanceof List<?>) {

return (JSONArray) obj;

}

return null;

}

/**

* Get a boolean value at the specified index

* @param index the index

* @return the boolean value or false if not found

public boolean getBooleanValue(int index) {

if (index < 0 || index >= size()) {

return false;

}

Object obj = get(index);

if (obj instanceof Boolean) {

return (Boolean) obj;

} else if (obj instanceof Number) {

return ((Number) obj).intValue() != 0;

} else if (obj instanceof String) {

return Boolean.parseBoolean((String) obj);

}

return false;

}

/**

* Get an integer value at the specified index

* @param index the index

* @return the integer value or 0 if not found

public int getIntValue(int index) {

if (index < 0 || index >= size()) {

return 0;

}

Object obj = get(index);

if (obj instanceof Number) {

return ((Number) obj).intValue();

} else if (obj instanceof String) {

try {

return Integer.parseInt((String) obj);

} catch (NumberFormatException e) {

// Ignore

}

return 0;

}

/**

* Get a long value at the specified index

* @param index the index

* @return the long value or 0 if not found

public long getLongValue(int index) {

if (index < 0 || index >= size()) {

return 0L;

}

Object obj = get(index);

if (obj instanceof Number) {

return ((Number) obj).longValue();

} else if (obj instanceof String) {

try {

return Long.parseLong((String) obj);

} catch (NumberFormatException e) {

// Ignore

}

return 0L;

}

/**

* Get a double value at the specified index

* @param index the index

* @return the double value or 0 if not found

public double getDoubleValue(int index) {

if (index < 0 || index >= size()) {

return 0.0;

}

Object obj = get(index);

if (obj instanceof Number) {

return ((Number) obj).doubleValue();

} else if (obj instanceof String) {

try {

return Double.parseDouble((String) obj);

} catch (NumberFormatException e) {

// Ignore

}

return 0.0;

}

/**

* Get a string value at the specified index

* @param index the index

* @return the string value or null if not found

public String getString(int index) {

if (index < 0 || index >= size()) {

return null;

}

Object obj = get(index);

return obj != null ? obj.toString() : null;

}

/**

* Add a value to the JSONArray

* @param obj the value to add

* @return this JSONArray

public JSONArray fluentAdd(Object obj) {

add(obj);

return this;

}

@Override

public String toString() {

return JSON.toJSONString(this);

}

@Override

public int size() {

return list.size();

}

@Override

public boolean isEmpty() {

return list.isEmpty();

}

@Override

public boolean contains(Object o) {

return list.contains(o);

}

@Override

public Iterator<Object> iterator() {

return list.iterator();

}

@Override

public Object[] toArray() {

return list.toArray();

}

@Override

public <T> T[] toArray(T[] a) {

return list.toArray(a);

}

@Override

public boolean add(Object o) {

return list.add(o);

}

@Override

public boolean remove(Object o) {

return list.remove(o);

}

@Override

public boolean containsAll(Collection<?> c) {

if (c == null || c.isEmpty()) {

return true;

}

return list.containsAll(c);

}

@Override

public boolean addAll(Collection<?> c) {

if (c == null || c.isEmpty()) {

return true;

}

return list.addAll(c);

}

@Override

public boolean addAll(int index, Collection<?> c) {

int sz = size();

if (index < 0) {

index += sz;

}

if (c == null || c.isEmpty()) {

return true;

}

return list.addAll(index, c);

}

@Override

public boolean removeAll(Collection<?> c) {

if (c == null || c.isEmpty()) {

return true;

}

return list.removeAll(c);

}

@Override

public boolean retainAll(Collection<?> c) {

if (c == null || c.isEmpty()) {

return true;

}

return list.retainAll(c);

}

@Override

public void clear() {

list.clear();

}

@Override

public Object get(int index) {

int sz = size();

if (index < 0) {

index += sz;

}

return list.get(index);

}

@Override

public Object set(int index, Object element) {

return list.set(index, element);

}

@Override

public void add(int index, Object element) {

list.add(index, element);

}

@Override

public Object remove(int index) {

int sz = size();

if (index < 0) {

index += sz;

}

if (index >= sz) {

return null;

}

return list.remove(index);

}

@Override

public int indexOf(Object o) {

return list.indexOf(o);

}

@Override

public int lastIndexOf(Object o) {

return list.lastIndexOf(o);

}

@Override

public ListIterator<Object> listIterator() {

return list.listIterator();

}

@Override

public ListIterator<Object> listIterator(int index) {

int sz = size();

if (index < 0) {

index += sz;

}

return list.listIterator(index);

}

@Override

public List<Object> subList(int fromIndex, int toIndex) {

if (fromIndex < 0) {

fromIndex += size();

}

if (toIndex < 0) {

toIndex += size();

}

return list.subList(fromIndex, toIndex);

}

APIJSON/APIJSONORM/src/main/java/apijson/JSONArray.java at no-json-lib · APIJSON/APIJSON · GitHub

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