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author | 2021-03-09 12:54:38 +0100 | |
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committer | 2021-03-10 09:31:58 +0100 | |
commit | 4af5241ab25b0103d8ea680789aaf9a8696dfc75 (patch) | |
tree | 36ccae11ebf094aa1ddd65df309b7531ce0db1ff /src/main/java/org/onap/pnfsimulator/template/search/JsonUtils.java | |
parent | c9975cb96ba4e0208e72399ed80f909beb95d9d9 (diff) |
Move pnf simulator to the new repo
In the first phase we renamed project from pnf simulator to vesclient.
Next steps: package rename, update Readme.md, upgrade project dependencies.
Issue-ID: INT-1869
Signed-off-by: Bogumil Zebek<bogumil.zebek@nokia.com>
Change-Id: I7714792f9739eb746c9c533e8ef41b9618a3a1d9
Diffstat (limited to 'src/main/java/org/onap/pnfsimulator/template/search/JsonUtils.java')
-rw-r--r-- | src/main/java/org/onap/pnfsimulator/template/search/JsonUtils.java | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/main/java/org/onap/pnfsimulator/template/search/JsonUtils.java b/src/main/java/org/onap/pnfsimulator/template/search/JsonUtils.java new file mode 100644 index 0000000..b595b4f --- /dev/null +++ b/src/main/java/org/onap/pnfsimulator/template/search/JsonUtils.java @@ -0,0 +1,104 @@ +/*- + * ============LICENSE_START======================================================= + * Simulator + * ================================================================================ + * Copyright (C) 2019 Nokia. 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.onap.pnfsimulator.template.search; + +import com.google.common.base.Strings; +import com.google.gson.Gson; +import com.google.gson.JsonArray; +import com.google.gson.JsonElement; +import com.google.gson.JsonObject; +import com.google.gson.JsonPrimitive; +import org.bson.Document; + +/** + * This util flattens nested json and produces json with keys transformed to form of json path + * where default separator between parent object key and object key is ':' + * For easing searching of boolean values, they are converted to its string representation + */ +public class JsonUtils { + + private static final String DEFAULT_PARENT_KEY_TO_OBJECT_KEY_SEPARATOR = ":"; + private static final String SEED_PREFIX = ""; + private static final Gson GSON = new Gson(); + + public JsonObject flatten(JsonObject original) { + return flattenWithPrefixedKeys(DEFAULT_PARENT_KEY_TO_OBJECT_KEY_SEPARATOR, original.deepCopy(), SEED_PREFIX, new JsonObject()); + } + + public JsonObject flatten(String parentKeyToKeySeparator, JsonObject original) { + return flattenWithPrefixedKeys(parentKeyToKeySeparator, original.deepCopy(), SEED_PREFIX, new JsonObject()); + } + + public Document flatten(Document original) { + return flatten(DEFAULT_PARENT_KEY_TO_OBJECT_KEY_SEPARATOR, original); + } + + public Document flatten(String parentKeyToKeySeparator, Document original) { + JsonObject originalJsonObject = GSON.fromJson(original.toJson(), JsonObject.class); + JsonObject flattenedJson = flatten(parentKeyToKeySeparator, originalJsonObject); + return Document.parse(flattenedJson.toString()); + } + + private JsonObject flattenWithPrefixedKeys(String parentKeyToKeySeparator, JsonElement topLevelElem, String prefix, JsonObject acc) { + if (topLevelElem.isJsonPrimitive()) { + handleJsonPrimitive(topLevelElem, prefix, acc); + } else if (topLevelElem.isJsonArray()) { + handleJsonArray(parentKeyToKeySeparator, topLevelElem, prefix, acc); + } else if (topLevelElem.isJsonObject()) { + handleJsonObject(parentKeyToKeySeparator, topLevelElem, prefix, acc); + } else { + acc.add(prefix, topLevelElem.getAsJsonNull()); + } + return acc.deepCopy(); + } + + private void handleJsonObject(String parentKeyToKeySeparator, JsonElement topLevelElem, String prefix, JsonObject acc) { + boolean isEmpty = true; + JsonObject thisToplevelObj = topLevelElem.getAsJsonObject(); + for (String key : thisToplevelObj.keySet()) { + isEmpty = false; + String keyPrefix = String.format("%s%s%s", prefix, parentKeyToKeySeparator, key); + flattenWithPrefixedKeys(parentKeyToKeySeparator, thisToplevelObj.get(key), keyPrefix, acc); + } + if (isEmpty && !Strings.isNullOrEmpty(prefix)) { + acc.add(prefix, new JsonObject()); + } + } + + private void handleJsonArray(String parentKeyToKeySeparator, JsonElement topLevelElem, String prefix, JsonObject acc) { + JsonArray asJsonArray = topLevelElem.getAsJsonArray(); + if (asJsonArray.size() == 0) { + acc.add(prefix, new JsonArray()); + } + for (int i = 0; i < asJsonArray.size(); i++) { + flattenWithPrefixedKeys(parentKeyToKeySeparator, asJsonArray.get(i), String.format("%s[%s]", prefix, i), acc); + } + } + + private void handleJsonPrimitive(JsonElement topLevelElem, String prefix, JsonObject acc) { + JsonPrimitive jsonPrimitive = topLevelElem.getAsJsonPrimitive(); + if (jsonPrimitive.isBoolean()) { + acc.add(prefix, new JsonPrimitive(jsonPrimitive.getAsString())); + } else { + acc.add(prefix, topLevelElem.getAsJsonPrimitive()); + } + } +} |