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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
117 lines
3.8 KiB
Java
117 lines
3.8 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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import java.util.Iterator;
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import java.util.Map;
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public class SchemaHistory
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{
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public static int calculateDict(JsonNode node) {
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int count = 0;
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Iterator<Map.Entry<String, JsonNode>> iterator = node.fields();
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while (iterator.hasNext())
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{
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Map.Entry<String,JsonNode> element = iterator.next();
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if (element.getValue().isArray()) {
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if (element.getKey().toLowerCase() == "fields")
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{
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count += element.getValue().size();
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}
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count += calculateList(element.getValue());
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} else if (element.getValue().isContainerNode()) {
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if (element.getKey().toLowerCase() == "fields")
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{
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count += element.getValue().size();
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}
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count += calculateDict(element.getValue());
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}
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else if (element.getKey().toLowerCase() == "fields")
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{
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count += 1;
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}
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}
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return count;
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}
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public static int calculateList(JsonNode node) {
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int count = 0;
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Iterator<JsonNode> arrayIterator = node.elements();
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while (arrayIterator.hasNext()) {
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JsonNode element = arrayIterator.next();
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if (element.isArray()) {
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count += calculateList(element);
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} else if (element.isContainerNode()) {
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count += calculateDict(element);
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}
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}
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return count;
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}
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public static int calculateFieldCount(JsonNode node)
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{
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int count = 0;
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JsonNode schemaNode = null;
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if (node != null && node.has("schema")) {
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schemaNode = node.get("schema");
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}
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else
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{
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schemaNode = node;
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}
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if (schemaNode.isArray()) {
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Iterator<JsonNode> arrayIterator = schemaNode.elements();
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while (arrayIterator.hasNext()) {
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JsonNode element = arrayIterator.next();
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if (element.isArray()) {
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count += calculateList(element);
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} else if (element.isContainerNode()) {
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count += calculateDict(element);
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}
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}
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}
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else if (schemaNode.isContainerNode())
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{
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Iterator<Map.Entry<String, JsonNode>> iterator = schemaNode.fields();
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while (iterator.hasNext())
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{
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Map.Entry<String,JsonNode> element = iterator.next();
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if (element.getValue().isArray()) {
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if (element.getKey().toLowerCase() == "fields")
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{
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count += element.getValue().size();
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}
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count += calculateList(element.getValue());
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} else if (element.getValue().isContainerNode()) {
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if (element.getKey().toLowerCase() == "fields")
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{
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count += element.getValue().size();
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}
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count += calculateDict(element.getValue());
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}
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else if (element.getKey().toLowerCase() == "fields")
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{
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count += 1;
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}
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}
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}
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return count;
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}
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} |