createCrudExpressionTree.default: Create access expression tree

In rappster/crudr: Interfaces for CRUD operations

Description

Default method of createCrudExpressionTree.

Usage

## Default S3 method:
createCrudExpressionTree(inst, id = character(),
  value = NULL, name_obj = "inst", name_value = "value",
  as_name_obj = TRUE, as_name_value = FALSE, fail_safe = FALSE, ...)

Arguments

inst	list. TODO
id	character. TODO
value	ANY (BasicClasses). Optional assignment value.
name_obj	character. Name of the actual object in the expression that values are extracted from or assigned to.
name_value	character. TODO
as_name_obj	logical. TODO
as_name_value	logical. TODO
fail_safe	logical. Wrap with try.
...	Further arguments to be passed to subsequent functions/methods.

Details

TODO

Value

expression.

Author(s)

Janko Thyson [e-mail]

References

http://github.com/rappster/crudr

See Also

createCrudExpressionTree

Examples

# Example object ----------------------------------------------------------

inst = list()

# No assignment value -----------------------------------------------------

tree <- createCrudExpressionTree(inst, c("a", "b", "c"))
sapply(tree, names)

createCrudExpressionTree(inst, c("a", "b", "c"), name_obj = "x")
createCrudExpressionTree(inst, c("a", "b", "c"), as_name_obj = FALSE)

createCrudExpressionTree(inst, c("a", "b", "c"), fail_safe = TRUE)

# Assignment value --------------------------------------------------------

createCrudExpressionTree(inst, c("a", "b", "c"), value = 1)
createCrudExpressionTree(inst, c("a", "b", "c"), value = 1,
  name_value = "y", as_name_value = TRUE)

createCrudExpressionTree(inst, c("a", "b", "c"), value = 1, fail_safe = TRUE)

rappster/crudr documentation built on May 26, 2019, 11:12 p.m.