erik/JSON-java
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Allow user to invoke query and optQuery ,with a JSONPointer,directly

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from JSONArray or JSONObject
This commit is contained in:
alessandro rao 2017-02-25 13:27:50 +01:00
parent 724fb888f7
commit 9e0fc5e680
2 changed files with 73 additions and 6 deletions
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40
JSONArray.java
View file

@ -980,7 +980,30 @@ public class JSONArray implements Iterable<Object> {
* @return the item matched by the JSONPointer, otherwise null
*/
public Object query(String jsonPointer) {
return new JSONPointer(jsonPointer).queryFrom(this);
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:
* <pre>
* [
* {"b":"c"}
* ]
* </pre>
* and this JSONPointer:
* <pre>
* "/0/b"
* </pre>
* 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);
}
/**
@ -992,9 +1015,20 @@ public class JSONArray implements Iterable<Object> {
* @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
*/
public Object optQuery(String jsonPointer) {
JSONPointer pointer = new JSONPointer(jsonPointer);
return query(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 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 pointer.queryFrom(this);
return jsonPointer.queryFrom(this);
} catch (JSONPointerException e) {
return null;
}

39
JSONObject.java
View file

@ -1359,7 +1359,29 @@ public class JSONObject {
* @return the item matched by the JSONPointer, otherwise null
*/
public Object query(String jsonPointer) {
return new JSONPointer(jsonPointer).queryFrom(this);
return query(new JSONPointer(jsonPointer));
}
/**
* Uses a uaer initialized JSONPointer and tries to
* match it to an item within this JSONObject. For example, given a
* JSONObject initialized with this document:
* <pre>
* {
* "a":{"b":"c"}
* }
* </pre>
* and this JSONPointer:
* <pre>
* "/a/b"
* </pre>
* 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);
}
/**
@ -1371,9 +1393,20 @@ public class JSONObject {
* @throws IllegalArgumentException if {@code jsonPointer} has invalid syntax
*/
public Object optQuery(String jsonPointer) {
JSONPointer pointer = new JSONPointer(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 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 pointer.queryFrom(this);
return jsonPointer.queryFrom(this);
} catch (JSONPointerException e) {
return null;
}