Querying by Extracted Metadata
You can also query based on extracted metadata fields such as content type, title, or author.
Example: Querying by Metadata
Search for documents where the content type is PDF:
curl -X GET "localhost:9200/myindex/_search" -H 'Content-Type: application/json' -d'
{
"query": {
"match": {
"attachment.content_type": "application/pdf"
}
}
}'
Indexing Attachments and Binary Data with Elasticsearch Plugins
Elasticsearch is renowned for its powerful search capabilities, but its functionality extends beyond just text and structured data. Often, we need to index and search binary data such as PDFs, images, and other attachments. Elasticsearch supports this through plugins, making it easy to handle and index various binary formats.
This article will guide you through indexing attachments and binary data using Elasticsearch plugins, with detailed examples and outputs.
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