You can take a look at this blog post
which shows how to use the API to perform a search.
Searching text inside items uploaded to Images and Documents module is not supported out of the box.
There is no built-in search index for Images and Documets module. You need to create a custom one. You could take a look at this blog post - In the mean time series (part 4): BONUS TRACK - "Products" module - implementing search index
To extract text form any document you should use a 3rd party framework to extract the content of the files. We have API that will allow you to index the content, but we do not have API that allows you to extract the content from the PDF files. You could use some open source libraries as Apache PDFBox
Sample code that uses ApachePDFBox - note we do not provide development support for this library
PDDocument doc =
java.io.InputStream stream =
doc = PDDocument.load(stream);
PDFTextStripper stripper =
String sText = String.Empty;
sText = stripper.getText(doc);
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