querykey {reutils}

querykey

Description

An integer query key returned by an ESearch, EPost or ELink call if the History server was used. Otherwise NA.

Usage

querykey(x, ...)

## S4 method for signature 'epost'
querykey(x, ...)

## S4 method for signature 'entrez_uid'
querykey(x, ...)

## S4 method for signature 'esearch'
querykey(x, ...)

Arguments

x

An eutil object.

...

Further arguments passed on to methods.

Value

An integer or NA.

Methods (by class)

• epost: Retrieve the querykey from an epost object.

• entrez_uid: Retrieve the querykey from an entrez_uid object.

• esearch: Retrieve the querykey from an esearch object.

See Also

einfo, esearch, esummary, efetch, elink, epost, egquery, espell, ecitmatch.

Examples

## Not run: 
e <- esearch("Mus musculus", "taxonomy", usehistory = TRUE)
querykey(e)

## End(Not run)