Github user FSchumacher commented on a diff in the pull request:
https://github.com/apache/jmeter/pull/28#discussion_r42307988
--- Diff:
src/components/org/apache/jmeter/extractor/json/jsonpath/JSONManager.java ---
@@ -0,0 +1,73 @@
+/*
+ * 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.jmeter.extractor.json.jsonpath;
+
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.jayway.jsonpath.JsonPath;
+
+/**
+ * Handles the extractions
+ *
https://github.com/jayway/JsonPath/blob/master/json-path/src/test/java/com/jayway/jsonpath/ComplianceTest.java
+ * @since 2.14
+ */
+public class JSONManager {
+
+ private Map<String, JsonPath> expressionToJsonPath = new
HashMap<String, JsonPath>(
+ 2);
+
+ private JsonPath getJsonPath(String jsonPathExpression) {
+ JsonPath jsonPath = expressionToJsonPath.get(jsonPathExpression);
+ if (jsonPath == null) {
+ jsonPath = JsonPath.compile(jsonPathExpression);
+ expressionToJsonPath.put(jsonPathExpression, jsonPath);
+ }
+
+ return jsonPath;
+ }
+
+ public void reset() {
+ expressionToJsonPath.clear();
+ }
+
+ public List<String> extractWithJsonPath(String jsonString, String
jsonPath)
+ throws ParseException {
+ JsonPath jsonPathParser = getJsonPath(jsonPath);
+ Object values = jsonPathParser.<List<?>> read(jsonString);
+ List<String> jsonExtraction = new ArrayList<String>();
+ if (values instanceof String) {
+ jsonExtraction.add((String) values);
+ } else if (values instanceof List<?>) {
+ List<?> asList = (List<?>) values;
+ for (Object object : asList) {
+ if(object instanceof String) {
+ jsonExtraction.add((String)object);
--- End diff --
object.toString() is probably not that inefficient that we have to do the
differentiation String vs. normal Object.
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