ds_new.Rd
This function creates a new local datastore at a specified destination folder and creates the DATASETS index file.
ds_new(ds)
ds | path to datastore |
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The folder structure of a repository
Root
datasets/files
DATASETS
# NOT RUN { ## create a datastore ds <- "/tmp/mydatastore" unlink(ds, recursive = TRUE) ## create datastore ds_new(ds) list.files(ds, recursive=TRUE) ds_info(ds) ## testdata df_v1 <- data.frame(x=1, y=1) df_v2 <- data.frame(x=2, y=2) df_v3 <- data.frame(x=3, y=3) ## add them to the datastore ## same name, different versions ds_add(ds, obj=df_v1, ds_name="df", version=1) ds_add(ds, obj=df_v2, ds_name="df", version=2) ds_add(ds, obj=df_v3, ds_name="df", version=3) ## read general information about datastore(s) ds_read_index(ds) ## check if dataset is available in datastore ds_exists(ds, ds_name="df2") # --> FALSE ds_exists(ds, ds_name="df") # --> TRUE ## get information about datasets ds_versions(ds, ds_name="df") ## retrieve versioned datasets from datastore v1 <- ds_get(ds, ds_name="df", version=1); identical(v1, df_v1) v2 <- ds_get(ds, ds_name="df", version=2); identical(v2, df_v2) v3 <- ds_get(ds, ds_name="df", version=3); identical(v3, df_v3) ## get latest version ds_get_latest(ds, ds_name="df") ## remove from datastore ds_remove(ds, ds_name="df2", version=NULL) # error ds_remove(ds, ds_name="df", version=1) # remove a specific version ds_remove(ds, ds_name="df", version=NULL) # remove all versions # }