<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>ElasticSearchStringLookupService</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">ElasticSearchStringLookupService</h1><h2>Description: </h2><p>Lookup a string value from Elasticsearch Server associated with the specified document ID. The coordinates that are passed to the lookup must contain the key 'id'.</p><h3>Tags: </h3><p>lookup, enrich, value, key, elasticsearch</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Display Name</th><th>API Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Client Service</strong></td><td>el-rest-client-service</td><td></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>ElasticSearchClientService<br/><strong>Implementation: </strong><a href="../org.apache.nifi.elasticsearch.ElasticSearchClientServiceImpl/index.html">ElasticSearchClientServiceImpl</a></td><td id="description">An ElasticSearch client service to use for running queries.</td></tr><tr><td id="name"><strong>Index</strong></td><td>el-lookup-index</td><td></td><td id="allowable-values"></td><td id="description">The name of the index to read from<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr><tr><td id="name">Type</td><td>el-lookup-type</td><td></td><td id="allowable-values"></td><td id="description">The type of this document (used by Elasticsearch for indexing and searching)<br/><strong>Supports Expression Language: true (will be evaluated using variable registry only)</strong></td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>System Resource Considerations:</h3>None specified.</body></html>