isIdCurrent {RSQLite} | R Documentation

## Check whether an dbObjectId handle object is valid or not

### Description

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

### Usage

    isIdCurrent(obj)

### Arguments

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

### Details

`dbObjectId` are R/S-Plus remote references to foreign (C code) 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` `dbGetQuery` `fetch`

### Examples

    cursor <- dbSendQuery(con, sql.statement)
    isIdCurrent(cursor)

[Package Contents]