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improved failure handling

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Bence Erős
2016-04-26 23:32:15 +02:00
parent 5bee7e3b45
commit 792c6f6a9c
1 changed files with 13 additions and 4 deletions
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17
JSONPointer.java
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@@ -53,7 +53,11 @@ public class JSONPointer {
if (current instanceof JSONObject) {
current = ((JSONObject) current).opt(unescape(token));
} else if (current instanceof JSONArray) {
current = readByIndexToken(current, unescape(token));
current = readByIndexToken(current, token);
} else {
throw new JSONPointerException(format(
"value [%s] is not an array or object therefore its key %s cannot be resolved", current,
token));
}
}
return current;
@@ -61,10 +65,15 @@ public class JSONPointer {
private Object readByIndexToken(Object current, String indexToken) {
try {
return ((JSONArray) current).opt(Integer.parseInt(unescape(indexToken)));
int index = Integer.parseInt(indexToken);
JSONArray currentArr = (JSONArray) current;
if (index >= currentArr.length()) {
throw new JSONPointerException(format("index %d is out of bounds - the array has %d elements", index,
currentArr.length()));
}
return currentArr.get(index);
} catch (NumberFormatException e) {
throw new JSONPointerException(format("%s is not an array index", unescape(indexToken)), e);
throw new JSONPointerException(format("%s is not an array index", indexToken), e);
}
}
}