org.apache.solr.request.json.JSONUtil Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.solr.request.json;
import java.io.IOException;
import org.noggit.JSONParser;
public class JSONUtil {
public static boolean advanceToMapKey(JSONParser parser, String key, boolean deepSearch) throws IOException {
for (;;) {
int event = parser.nextEvent();
switch (event) {
case JSONParser.STRING:
if (key != null && parser.wasKey()) {
String val = parser.getString();
if (key.equals(val)) {
return true;
}
}
break;
case JSONParser.OBJECT_END:
return false;
case JSONParser.OBJECT_START:
if (deepSearch) {
boolean found = advanceToMapKey(parser, key, true);
if (found) {
return true;
}
} else {
advanceToMapKey(parser, null, false);
}
break;
case JSONParser.ARRAY_START:
skipArray(parser, key, deepSearch);
break;
}
}
}
public static void skipArray(JSONParser parser, String key, boolean deepSearch) throws IOException {
for (;;) {
int event = parser.nextEvent();
switch (event) {
case JSONParser.OBJECT_START:
advanceToMapKey(parser, key, deepSearch);
break;
case JSONParser.ARRAY_START:
skipArray(parser, key, deepSearch);
break;
case JSONParser.ARRAY_END:
return;
}
}
}
public static void expect(JSONParser parser, int parserEventType) throws IOException {
int event = parser.nextEvent();
if (event != parserEventType) {
throw new IOException("JSON Parser: expected " + JSONParser.getEventString(parserEventType) + " but got " + JSONParser.getEventString(event) );
}
}
}