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* Rename web to wherehows-api and update README. * Rename backend-service to wherehows-backend * Rename metadata-etl to wherehows-etl * Rename hadoop-dataset-extractor-standalone to wherehows-hadoop
66 lines
1.8 KiB
Java
66 lines
1.8 KiB
Java
/**
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* Copyright 2015 LinkedIn Corp. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*/
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package utils;
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import com.fasterxml.jackson.databind.JsonNode;
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/**
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* Created by zechen on 10/16/15.
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*/
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public class JsonUtil {
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public static Object getJsonValue(JsonNode input, String name, Class type) throws IllegalArgumentException {
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return getJsonValue(input, name, type, true, null);
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}
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public static Object getJsonValue(JsonNode input, String name, Class type, Object defaultValue) throws IllegalArgumentException {
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return getJsonValue(input, name, type, false, defaultValue);
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}
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public static Object getJsonValue(JsonNode input, String name, Class type, boolean isRequired, Object defaultValue) throws IllegalArgumentException {
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JsonNode node = input.findPath(name);
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if (node.isMissingNode() || node.isNull()) {
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if (isRequired) {
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throw new IllegalArgumentException(name + " is required!");
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} else {
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return defaultValue;
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}
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}
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if (type.equals(String.class)) {
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return node.textValue();
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}
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if (type.equals(Integer.class)) {
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return node.asInt();
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}
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if (type.equals(Long.class)) {
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return node.asLong();
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}
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if (type.equals(Boolean.class)) {
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return node.asBoolean();
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}
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if (type.equals(Double.class)) {
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return node.asDouble();
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}
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return node.asText();
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}
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}
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