@sap/textanalysis
v1.1.0
Published
The Node.js module to provide a native API for text analysis on the XSA platform in HANA.
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@sap/textanalysis
@sap/textanalysis is a Node.js module on the XS Advanced platform that supports text analysis. Text analysis performs linguistic analysis and entity extraction on unstructured text documents.
@sap/textanalysis is implemented as an interface to the TA_ANALYZE SQL stored procedure. It provides the following single API function:
analyze()
For more information on text analysis and the TA_ANALYZE stored procedure, see the Text Analysis Developer Guide.
Note that TA_ANALYZE and @sap/textanalysis is only available on HANA 2.0 and later versions.
Usage example
First, a HANA database connection must be established (either with hdb or with @sap/hana-client). Then the client database object can be passed to the analyze method along with the input parameters. The input parameters set the input variables to the TA_ANALYZE stored procedure.
var ta = require('@sap/textanalysis');
var client;
var options = {
host: process.env.HANA_HOST,
port: process.env.HANA_PORT,
user: process.env.HANA_USER || 'system',
password: process.env.HANA_PASSWORD || 'manager',
};
async.series([
function connect(callback) {
client = hdb.createClient(options);
client.connect(callback);
},
function analyze(callback) {
var values = {
DOCUMENT_TEXT: '<!DOCTYPE html><html><body><h1>My First Heading</h1><p>My first paragraph.</p></body></html>',
LANGUAGE_CODE: 'EN',
CONFIGURATION: 'EXTRACTION_CORE',
RETURN_PLAINTEXT: 0
};
ta.analyze(values, client, function done(err, parameters, rows) {
if (err) { return console.error('error', err); }
callback();
});
},
function end(callback) {
client.end(callback);
}], done
);