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-rw-r--r--cps-service/src/main/java/org/onap/cps/utils/JsonObjectMapper.java90
1 files changed, 90 insertions, 0 deletions
diff --git a/cps-service/src/main/java/org/onap/cps/utils/JsonObjectMapper.java b/cps-service/src/main/java/org/onap/cps/utils/JsonObjectMapper.java
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index 0000000000..2459b51af4
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+++ b/cps-service/src/main/java/org/onap/cps/utils/JsonObjectMapper.java
@@ -0,0 +1,90 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2022 Nordix Foundation
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.utils;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.spi.exceptions.DataValidationException;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@RequiredArgsConstructor
+@Component
+public class JsonObjectMapper {
+
+ private final ObjectMapper objectMapper;
+
+ /**
+ * Serializing generic java object to JSON using Jackson.
+ *
+ * @param object any java object value
+ * @return the generated JSON as a string.
+ */
+ public String asJsonString(final Object object) {
+ try {
+ return objectMapper.writeValueAsString(object);
+ } catch (final JsonProcessingException e) {
+ log.error("Parsing error occurred while converting Object to JSON string.");
+ throw new DataValidationException("Parsing error occurred while converting given object to JSON string.",
+ e.getMessage());
+ }
+ }
+
+ /**
+ * Constructing JavaType out of given type (typically java.lang.Class).
+ * Allow efficient value conversions for structurally compatible json objects,
+ * according to standard Jackson configuration.
+ *
+ * @param jsonObject structurally compatible json object
+ * @param valueType compatible Object class type
+ * @param <T> type parameter
+ * @return a class object of specific class type 'T'
+ */
+ public <T> T convertToValueType(final Object jsonObject, final Class<T> valueType) {
+ try {
+ return objectMapper.convertValue(jsonObject, valueType);
+ } catch (final IllegalArgumentException e) {
+ log.error("Found structurally incompatible object while converting into value type.");
+ throw new DataValidationException("Found structurally incompatible object while converting "
+ + "into value type.", e.getMessage());
+ }
+ }
+
+ /**
+ * Deserialize JSON content from given JSON content String.
+ *
+ * @param jsonContent JSON content
+ * @param valueType compatible Object class type
+ * @param <T> type parameter
+ * @return a class object of specific class type 'T'
+ */
+ public <T> T convertJsonString(final String jsonContent, final Class<T> valueType) {
+ try {
+ return objectMapper.readValue(jsonContent, valueType);
+ } catch (final JsonProcessingException e) {
+ log.error("Parsing error occurred while converting JSON content to specific class type.");
+ throw new DataValidationException("Parsing error occurred while converting "
+ + "JSON content to specific class type.", e.getMessage());
+ }
+ }
+}