save_all_flobs | R Documentation |
Rename flob
s from a SQLite database and save to directory.
save_all_flobs( table_name = NULL, conn, dir = ".", sep = "_-_", sub = FALSE, replace = FALSE, geometry = FALSE )
table_name |
A vector of character strings indicating names of tables to save flobs from. By default all tables are included. |
conn |
A SQLite connection object. |
dir |
A string of the path to the directory to save the files in. |
sep |
A string of the separator used to construct file names from values. |
sub |
A logical scalar specifying whether to save all existing files in a subdirectory of the same name (sub = TRUE) or all possible files in a subdirectory of the same name (sub = NA) or not nest files within a subdirectory (sub = FALSE). |
replace |
A flag specifying whether to replace existing files. If sub = TRUE (or sub = NA) and replace = TRUE then all existing files within a subdirectory are deleted. |
geometry |
A flag specifying whether to search columns named geometry for flobs. |
An invisible named list of named vectors of the file names and new file names saved.
flob <- flobr::flob_obj conn <- DBI::dbConnect(RSQLite::SQLite(), ":memory:") DBI::dbGetQuery(conn, "CREATE TABLE Table1 (IntColumn INTEGER PRIMARY KEY NOT NULL)") DBI::dbWriteTable(conn, "Table1", data.frame(IntColumn = c(1L, 2L)), append = TRUE) key <- data.frame(IntColumn = 2L) write_flob(flob, "BlobColumn", "Table1", key, conn, exists = FALSE) dir <- tempdir() save_all_flobs(conn = conn, dir = dir) DBI::dbDisconnect(conn)
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