erik/JSON-java
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* Updates array constructor and bulk operations to best guess capacity information

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* Update JSONObject to allow best guess for initial capacity.
This commit is contained in:
John J. Aylward 2017-06-08 11:22:23 -04:00
parent ef7a5e40be
commit 9c092753b0
3 changed files with 25 additions and 7 deletions
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17
JSONObject.java
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@ -178,7 +178,7 @@ public class JSONObject {
* An array of strings.
*/
public JSONObject(JSONObject jo, String[] names) {
this();
this(names.length);
for (int i = 0; i < names.length; i += 1) {
try {
this.putOnce(names[i], jo.opt(names[i]));
@ -250,7 +250,7 @@ public class JSONObject {
* the JSONObject.
*/
public JSONObject(Map<?, ?> m) {
this.map = new HashMap<String, Object>();
this.map = new HashMap<String, Object>(m == null ? 0 : m.size());
if (m != null) {
for (final Entry<?, ?> e : m.entrySet()) {
final Object value = e.getValue();
@ -302,7 +302,7 @@ public class JSONObject {
* from the object.
*/
public JSONObject(Object object, String names[]) {
this();
this(names.length);
Class<?> c = object.getClass();
for (int i = 0; i < names.length; i += 1) {
String name = names[i];
@ -371,6 +371,17 @@ public class JSONObject {
}
}
}
/**
* Constructor to specify an initial capacity of the internal map. Useful for library
* internal calls where we know, or at least can best guess, how big this JSONObject
* will be.
*
* @param initialCapacity initial capacity of the internal map.
*/
protected JSONObject(int initialCapacity){
this.map = new HashMap<String, Object>(initialCapacity);
}
/**
* Accumulate values under a key. It is similar to the put method except