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Diffstat (limited to 'common/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java')
-rw-r--r-- | common/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/common/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java b/common/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java new file mode 100644 index 0000000000..148eb74068 --- /dev/null +++ b/common/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java @@ -0,0 +1,82 @@ +/*- + * ============LICENSE_START======================================================= + * ONAP - SO + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * 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. + * ============LICENSE_END========================================================= + */ + +package org.openecomp.mso.jsonpath; + +import java.util.ArrayList; +import java.util.List; +import java.util.Optional; + +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.node.ArrayNode; +import com.jayway.jsonpath.Configuration; +import com.jayway.jsonpath.JsonPath; +import com.jayway.jsonpath.Option; +import com.jayway.jsonpath.spi.json.JacksonJsonNodeJsonProvider; + +public class JsonPathUtil { + + + private final Configuration conf; + + private JsonPathUtil() { + conf = Configuration.defaultConfiguration().jsonProvider(new JacksonJsonNodeJsonProvider()).addOptions(Option.ALWAYS_RETURN_LIST, Option.SUPPRESS_EXCEPTIONS); + } + + private static class Helper { + private static final JsonPathUtil INSTANCE = new JsonPathUtil(); + } + + public static JsonPathUtil getInstance() { + return Helper.INSTANCE; + } + public boolean pathExists(String json, String jsonPath) { + return JsonPath.using(conf).parse(json).<ArrayNode>read(jsonPath).size() != 0; + } + + public Optional<String> locateResult(String json, String jsonPath) { + final ArrayNode result = JsonPath.using(conf).parse(json).read(jsonPath); + if (result.size() == 0) { + return Optional.empty(); + } else { + if (result.get(0).isValueNode()) { + return Optional.of(result.get(0).asText()); + } else { + return Optional.of(result.get(0).toString()); + } + + } + } + + public List<String> locateResultList(String json, String jsonPath) { + final ArrayNode resultNodes = JsonPath.using(conf).parse(json).read(jsonPath); + final ArrayList<String> result = new ArrayList<>(); + + for (JsonNode node : resultNodes) { + if (node.isValueNode()) { + result.add(node.asText()); + } else { + result.add(node.toString()); + } + + } + return result; + } +} |