getAttributes: set, query or remove items and attributes in an AmazonDB...

In omegahat/RAmazonDB: REST-based Interface to Amazon's SimpleDB

Description

These functions allow us to populate and manage data within an AmazonDB domain. putAttributes allows us to put named elements in a vector as attributes of an item in an AmazonDB domain. The idea is that we have an R object which is a list or vector with named components. We map these elements to attributes within an item in the database.

At present, the values are converted to strings. There is no support for numbers, etc. We will build this in later as a higher-level layer with the database tables having their own meta-data giving the R types.

Usage

getAttributes(domain, name, auth = getOption("AmazonAWS"),
               .opts = getDefaultS3CurlOptions())
putAttributes(domain, ..., name = names(.objs)[1],
               auth = getOption("AmazonAWS"),
               .objs = list(...),
                .opts = getDefaultS3CurlOptions())

Arguments

domain	the domain in which the operations act
name	the name of the item being manipulated.
auth	the authorization key and identifier for the operation.
...	name = object pairs which are mapped to items int the AmazonDB domain.
.objs	an alternative way to specify the collection of R objects to upload. This allows them to be specified as a single object, a list.
.opts	a list of options passed to curlPerform to control how the HTTP request is performed.

Value

getAttributes returns a vector or list of the values for the different attributes within the name. This is typically a character vector.

Author(s)

Duncan Temple Lang

omegahat/RAmazonDB documentation built on May 24, 2019, 1:52 p.m.