Created
December 9, 2021 10:20
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| library(RPostgres) | |
| # Get and read the PDF | |
| path <- file.path("os2.pdf") | |
| pdf <- readBin(con = path, what = raw(), n = file.info(path)$size) | |
| # Open it | |
| browseURL(path) | |
| # Connect to default DB and put seralized raw pdf in a data.frame | |
| # sudo -u postgres createuser jordi | |
| # sudo -u postgres createdb jordi --owner=jordi | |
| con <- dbConnect(RPostgres::Postgres()) | |
| pdf_serialized <- serialize(pdf, NULL) | |
| df <- data.frame(pdfs = I(list(pdf_serialized))) | |
| # Write the table in database | |
| dbWriteTable(conn = con, name = "mytable", value = df, overwrite = TRUE) | |
| # Read your table, unserialize and write the pdf in a temporary file | |
| out <- dbReadTable(conn = con, name = "mytable") | |
| pdf_out <- unserialize(out$pdfs[[1]]) | |
| tmp <- tempfile(fileext = ".pdf") | |
| writeBin(object = pdf_out, con = tmp) | |
| # Open it | |
| browseURL(tmp) |
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