isIdCurrent {RMySQL} | R Documentation

## Check whether a database handle object is valid or not

### Description

Support function that verifies that an object holding a reference to a foreign object is still valid for communicating with the RDBMS

### Usage

    isIdCurrent(obj)

### Arguments

`obj` | any `dbObject` (e.g., `dbDriver`, `dbConnection`, `dbResult`).

### Details

`dbObjects` are R/S-Plus remote references to foreign objects. This introduces differences to the object's semantics such as persistence (e.g., connections may be closed unexpectedly), thus this function provides a minimal verification to ensure that the foreign object being referenced can be contacted.

### Value

a logical scalar.

### See Also

`dbDriver` `dbConnect` `dbSendQuery` `fetch`

### Examples

    ## Not run:
    cursor <- dbSendQuery(con, sql.statement)
    isIdCurrent(cursor)
    ## End(Not run)

[Package RMySQL version 0.6-0 Index]