Removes duckdb function (see NEWS)

Author: ddotta

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: parquetize
 Type: Package
 Title: Convert Files to Parquet Format
-Version: 0.5.0
+Version: 0.5.1
 Authors@R:
     c(person(given = "Damien",
              family = "Dotta",
@@ -10,7 +10,7 @@ Authors@R:
 Description: Collection of functions to get files in parquet format.
     Parquet is a columnar storage file format <https://parquet.apache.org/>. 
     The files to convert can be of several formats 
-    ("csv", "duckdb", "RData", "rds", "RSQLite", 
+    ("csv", "RData", "rds", "RSQLite", 
     "json", "ndjson", "SAS", "SPSS"...).
 License: Apache License (>= 2.0)
 Encoding: UTF-8
@@ -32,7 +32,6 @@ Imports:
     dplyr,
     jsonlite,
     DBI,
-    duckdb,
     RSQLite,
     cli
 VignetteBuilder: knitr

NAMESPACE

@@ -1,7 +1,6 @@
 # Generated by roxygen2: do not edit by hand
 
 export(csv_to_parquet)
-export(duckdb_to_parquet)
 export(json_to_parquet)
 export(parquetize_example)
 export(rbind_parquet)
@@ -22,8 +21,6 @@ importFrom(cli,cli_alert_success)
 importFrom(cli,cli_progress_bar)
 importFrom(cli,cli_progress_message)
 importFrom(curl,curl_download)
-importFrom(duckdb,duckdb)
-importFrom(duckdb,duckdb_shutdown)
 importFrom(haven,read_dta)
 importFrom(haven,read_sas)
 importFrom(haven,read_sav)

NEWS.md

@@ -1,3 +1,8 @@
+# parquetize 0.5.1
+
+This release removes `duckdb_to_parquet()` function on the advice of Brian Ripley from CRAN.  
+Indeed, the storage of DuckDB is not yet stable. The storage will be stabilized when version 1.0 releases.
+
 # parquetize 0.5.0
 
 This release includes corrections for CRAN submission.

R/duckdb_to_parquet.R

@@ -12,7 +12,7 @@ status](https://github.com/ddotta/parquetize/workflows/R-CMD-check/badge.svg)](h
 :package: Package `parquetize` <img src="man/figures/hex_parquetize.png" width=110 align="right"/>
 ======================================
 
-R package that allows to convert databases of different formats (csv, SAS, SPSS, Stata, rds, duckdb, sqlite, JSON, ndJSON) to [parquet](https://parquet.apache.org/) format in a same function.
+R package that allows to convert databases of different formats (csv, SAS, SPSS, Stata, rds, sqlite, JSON, ndJSON) to [parquet](https://parquet.apache.org/) format in a same function.
 
 ## Installation
 
@@ -36,11 +36,11 @@ library(parquetize)
 
 ## Why this package ?
 
-This package is a simple wrapper of some very useful functions from the [haven](https://github.com/tidyverse/haven), [readr](https://github.com/tidyverse/readr/), [jsonlite](https://github.com/jeroen/jsonlite), [RSQLite](https://github.com/r-dbi/RSQLite), [duckdb](https://github.com/cran/duckdb) and [arrow](https://github.com/apache/arrow) packages.
+This package is a simple wrapper of some very useful functions from the [haven](https://github.com/tidyverse/haven), [readr](https://github.com/tidyverse/readr/), [jsonlite](https://github.com/jeroen/jsonlite), [RSQLite](https://github.com/r-dbi/RSQLite) and [arrow](https://github.com/apache/arrow) packages.
 
 While working, I realized that I was often repeating the same operation when working with parquet files : 
 
-- I import the file in R with {haven}, {jsonlite}, {readr}, {DBI}, {RSQLite} or {duckdb}.
+- I import the file in R with {haven}, {jsonlite}, {readr}, {DBI} or {RSQLite}.
 - And I export the file in parquet format
 
 As a fervent of the DRY principle (don't repeat yourself) the exported functions of this package make my life easier and **execute these operations within the same function**.  
@@ -55,16 +55,14 @@ As a fervent of the DRY principle (don't repeat yourself) the exported functions
 - [table_to_parquet()](https://ddotta.github.io/parquetize/reference/table_to_parquet.html)
     - **The other benefit of this function** is that it handles SAS, SPSS and Stata files in a same function. There is only one function to use for these 3 cases. To avoid overcharging R's RAM for huge table, the conversion can be done by chunk. For more information, see [here](https://ddotta.github.io/parquetize/articles/aa-conversions.html)
 - [sqlite_to_parquet()](https://ddotta.github.io/parquetize/reference/sqlite_to_parquet.html)
-- [duckdb_to_parquet()](https://ddotta.github.io/parquetize/reference/duckdb_to_parquet.html)
 
 
 For more details, see the documentation and examples :  
 - [table_to_parquet()](https://ddotta.github.io/parquetize/reference/table_to_parquet.html#ref-examples).  
 - [csv_to_parquet()](https://ddotta.github.io/parquetize/reference/csv_to_parquet.html#ref-examples).  
 - [json_to_parquet()](https://ddotta.github.io/parquetize/reference/json_to_parquet.html#ref-examples).  
 - [rds_to_parquet()](https://ddotta.github.io/parquetize/reference/rds_to_parquet.html#ref-examples).  
-- [sqlite_to_parquet()](https://ddotta.github.io/parquetize/reference/sqlite_to_parquet.html#ref-examples)  
-- [duckdb_to_parquet()](https://ddotta.github.io/parquetize/reference/duckdb_to_parquet.html#ref-examples).
+- [sqlite_to_parquet()](https://ddotta.github.io/parquetize/reference/sqlite_to_parquet.html#ref-examples).
 
 ## Example
 

README.md

@@ -17,7 +17,6 @@ reference:
       - rds_to_parquet
       - table_to_parquet
       - sqlite_to_parquet
-      - duckdb_to_parquet
   - title: Other functions
     contents:
       - rbind_parquet