/*
* Copyright 2013-2015 the original author or authors.
*
* Licensed 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.springframework.integration.json;
import java.io.File;
import java.io.InputStream;
import java.net.URL;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.Predicate;
/**
* Utility class to {@link #evaluate} a jsonPath on the provided object.
* Delegates evaluation to <a href="http://code.google.com/p/json-path">JsonPath</a>.
* Note {@link #evaluate} is used as {@code #jsonPath()} SpEL function.
*
* @author Artem Bilan
* @since 3.0
*/
public final class JsonPathUtils {
public static <T> T evaluate(Object json, String jsonPath, Predicate... predicates) throws Exception {
if (json instanceof String) {
return JsonPath.read((String) json, jsonPath, predicates);
}
else if (json instanceof File) {
return JsonPath.read((File) json, jsonPath, predicates);
}
else if (json instanceof URL) {
return JsonPath.read((URL) json, jsonPath, predicates);
}
else if (json instanceof InputStream) {
return JsonPath.read((InputStream) json, jsonPath, predicates);
}
else {
return JsonPath.read(json, jsonPath, predicates);
}
}
private JsonPathUtils() {
}
}