lazyLs: List contents of lazy load database, using a tag

In PredictiveEcology/lazyR: Create Lazy Load Databases for R Objects

Description

This will simply list object names that are contained within an archivist lazy load database. The listing can be done with a tag.

Usage

lazyLs(tag = NULL, lazyDir = NULL, tagType = "objectName:",
  archivistCol = "tag", exact = FALSE)

Arguments

tag	Character string (not vectorized!). Search objects using this tag as a pattern.
lazyDir	Character string of directory to be used for the lazy databases. This creates an archivist repository.
tagType	Some tags have prefixes, such as "class:". The search can be thus within a tagType if this is specified. If "all", then all tag types are returned.
archivistCol	The name of the column to return from a showLocalRepo call. This can be "tag" or "artifact" or "createdDate".
exact	Logical. Should the tag matching be exact matching or not. If exact=TRUE is used, this is equivalent to a regexp expression with ^expr$.

Value

A character vector that matches the tagType, tag, and archivistCol requested.

Author(s)

Eliot McIntire

See Also

lazyLs, lazyRm, lazyLoad2, lazyIs.

Examples

## Not run: 
tmpdir <- lazyDir(file.path(tempdir(), "lazyDir"), create=TRUE)
a <- rnorm(10)
b <- rnorm(20)
lazySave(a, b, lazyDir = tmpdir)
lazyLs(lazyDir=tmpdir)

# can set lazyDir and don't need lazyDir argument
lazyDir(tmpdir)
lazyLs()

# can add a tag to file list
lazyLs(tag = "function") # empty character vector
lazyLs(tag = "numeric") # object names of a and b

# To return the values of different tags, use the tagType argument
lazyLs(tagType="objectName:") # Just object names, the default
lazyLs(tagType="class:")      # All classes in the database,
                              #returns multiple lines per object
lazyLs(tagType="all")         # returns all information in the database
unlink(tmpdir, recursive = TRUE)

## End(Not run)

PredictiveEcology/lazyR documentation built on May 8, 2019, 3:10 p.m.