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Diffstat (limited to 'appc-common/src/main/java/org/onap/appc/util/JsonUtil.java')
| -rw-r--r-- | appc-common/src/main/java/org/onap/appc/util/JsonUtil.java | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/appc-common/src/main/java/org/onap/appc/util/JsonUtil.java b/appc-common/src/main/java/org/onap/appc/util/JsonUtil.java deleted file mode 100644 index 14784595c..000000000 --- a/appc-common/src/main/java/org/onap/appc/util/JsonUtil.java +++ /dev/null @@ -1,126 +0,0 @@ -/*- - * ============LICENSE_START======================================================= - * ONAP : APPC - * ================================================================================ - * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved. - * ================================================================================ - * Copyright (C) 2017 Amdocs - * ============================================================================= - * 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.appc.util; - -import java.io.FileNotFoundException; -import java.io.IOException; -import java.io.InputStream; -import java.util.Map; -import com.fasterxml.jackson.annotation.JsonInclude; -import com.fasterxml.jackson.core.JsonParser; -import com.fasterxml.jackson.databind.DeserializationFeature; -import com.fasterxml.jackson.databind.ObjectMapper; -import com.fasterxml.jackson.databind.SerializationFeature; - -public class JsonUtil { - - static ObjectMapper MAPPER = null; - static { - MAPPER = new ObjectMapper(); - MAPPER.enable(SerializationFeature.INDENT_OUTPUT); - MAPPER.configure(JsonParser.Feature.ALLOW_COMMENTS, true); - MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL); - MAPPER.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES); // allow translation even - // if extra attrs exist - // in the json - MAPPER.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false); - // Uncomment below when Jackson is upgraded to version 2.7 or above - // MAPPER.setPropertyNamingStrategy(PropertyNamingStrategy.KEBAB_CASE); - } - - /** - * @param valueAsString a valid json Map represented as String - * @return a flat map that each entry key derived from hierarchy path in the json object and - * flatted to a dotted separated string. e.g. - * "{\"A\":\"A-value\",\"B\":{\"C\":\"B.C-value\",\"D\":\"B.D-value\"}}"; will be - * represented as {A=A-value, B.C=B.C-value, B.D=B.D-value} when it required that the - * input will not be flatted the json string should be formatted as below example: e.g. - * "{\"A\":\"A-value\",\"B\":\"{\\\"C\\\":\\\"C-value\\\",\\\"D\\\":\\\"D-value\\\"}\"}" - * will be represented as {A=A-value, B={"C":"C-value","D":"D-value"}} - * @throws IOException when the object is not valid json Map - */ - public static Map<String, String> convertJsonStringToFlatMap(String valueAsString) - throws IOException { - Map readValueMap = MAPPER.readValue(valueAsString, Map.class); - return org.onap.appc.util.ObjectMapper.map(readValueMap); - } - - /** - * 0 is the getStackTrace method 1 is the current method 2 is the parent method, 3 is the - * grandparent method or the parent class in this case. - */ - private static final int PARENT_CLASS_INDEX = 3; - - - /** - * @see #readInputJson(String, Class, Class) - */ - public static <T> T readInputJson(String location, Class<T> returnClass) throws IOException { - return readInputJson(location, returnClass, getCallingClass(PARENT_CLASS_INDEX)); - } - - /** - * @param location The location or name of the file we are trying to read e.g. JsonBody.json - * @param returnClass The class *this* Json is suppose to represent. - * @param locationClass The starting point for json lookup. the value specified by location is - * relative to this class. - * @return The object being returned - * @throws IOException Can't find the specified json file at Location. - */ - public static <T> T readInputJson(String location, Class<T> returnClass, Class<?> locationClass) - throws IOException { - try (InputStream is = locationClass.getResourceAsStream(location)) { - validateInput(is, location); - return MAPPER.readValue(is, returnClass); - } - } - - /** - * Note that this method is sensitive to the depth of the call stack. For example if a public - * method calls a private method, that calls this method likely the desired classIndex value is - * 4 rather than 3. However, it's convenient to reduce the input required by callers of this - * class. - * - * @param classIndex How far up the stack trace to find the class we want. - * @return The class that called one of the public methods of this class. - */ - private static Class<?> getCallingClass(int classIndex) { - String className = Thread.currentThread().getStackTrace()[classIndex].getClassName(); - try { - return Class.forName(className); - } catch (ClassNotFoundException e) { - // Theoretically impossible. - throw new IllegalStateException( - "Could not do class lookup for class in our stack trace?!?"); - } - } - - private static void validateInput(InputStream is, String location) - throws FileNotFoundException { - if (is == null) { - throw new FileNotFoundException(String.format("Could not find file at '%s'", location)); - } - } - -} |