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Elasticsearch Java API – Get Field List for a given Index and Type

The following is sample Java program to get the list of fields for a given index and type name in an Elasticsearch instance. Sample Program: package com.report.test; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Set; import org.elasticsearch.client.Client; import org.elasticsearch.client.transport.TransportClient; import org.elasticsearch.cluster.ClusterState; import org.elasticsearch.cluster.metadata.IndexMetaData; import org.elasticsearch.cluster.metadata.MappingMetaData; import org.elasticsearch.common.settings.ImmutableSettings; import org.elasticsearch.common.settings.Settings; import org.elasticsearch.common.transport.InetSocketTransportAddress; public class SampleProgram{ public… Read More »

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Elasticsearch Plugin To Generate (Save and E-Mail) Excel Reports

ElasticTab – Elasticsearch to Excel Report Web Application Simple Web UI Download Excel Reports Schedule/Edit/Delete Reports E-Mail Reports Go to https://github.com/raghavendar-ts/ElasticTab-Elasticsearch-to-Excel-Report Elasticsearch Plugin to Generate Excel Reports            There are many use cases where in one needs to import data from an external system or database to Elasticsearch and many plugins… Read More »

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Java JConsole – Local Process List Empty – Solved

JConsole or  Java Monitoring and Management Console Open command prompt Execute the command echo %TMP% Now you will get a path to a folder where temporary files are stored. E.g. C:\Users\Username\AppData\Local\Temp Go to that folder Remove the folder named hsperfdata_USERNAME Restart JConsole application and now you will have the list of currently running Java processes in the local process… Read More »

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NFC Ring – Unlock smartphones, door locks and transfer information

      Smartphones are making our way easy to go. Most of the people use smartphone particularity for communication. It doesn’t matter whether we  call, message, transfer media content, photos or any other. The communication happens through radio signals. Bluetooth technology is one of the technology which lead way to next generation communication standard NFC(Near Field Communication). What is NFC? It is a set… Read More »

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Writing REST APIs – CRUD – Request & Response – Best Practices – Part I

I am going to publish a series of posts  related to REST APIs standards and today we will see some details on designing the request and response for an API. So now we will assume we are going to write an API for user managements and we call this User API. When writing an API, the following… Read More »

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