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Added modb_use to R and the c handler + moved the connection referencing to a helpers file

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This commit is contained in:
Craig Williams
2020-10-05 17:30:27 +01:00
parent cbbda5378f
commit ca594a2c0b
5 changed files with 83 additions and 36 deletions
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7
R/Manage.R
View File

@@ -223,4 +223,11 @@ modb_destroy <- function(modb_name, ...) {
conn_ref <- modb_conn_ref(args = list(...))
res <- .Call(c_modb_destroy, conn_ref, modb_name)
return(res)
}
#' @export
modb_use <- function(modb_name, override = FALSE, ...) {
conn_ref <- modb_conn_ref(args = list(...))
res <- .Call(c_modb_use, conn_ref, modb_name, as.logical(override))
return(res)
}

21
src/R_helpers_p.c Normal file
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@@ -0,0 +1,21 @@
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "R_helpers_p.h"
#include "strext.h"
struct stored_conn_t *getConnectionByRef(SEXP r_conn_ref)
{
struct stored_conn_t *sconn = 0;
if (Rf_isString(r_conn_ref)) {
sconn = connectionByName(Rf_translateCharUTF8(STRING_ELT(r_conn_ref, 0)));
} else if (Rf_isInteger(r_conn_ref)) {
sconn = connectionById(Rf_asInteger(r_conn_ref));
} else {
Rf_error("Neither name or id provided");
}
return sconn;
}

9
src/R_helpers_p.h Normal file
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@@ -0,0 +1,9 @@
#ifndef H__R_HELPERS_P__
#define H__R_HELPERS_P__
#include <Rinternals.h>
#include "database.h"
struct stored_conn_t *getConnectionByRef(SEXP r_conn_ref);
#endif // H__R_HELPERS_P__

74
src/R_modb_manage.c
View File

@@ -1,26 +1,10 @@
#include <stdio.h>
#include <string.h>
#include "R_modb_manage.h"
#include "R_list_item.h"
#include "db_connection.h"
#include "modb.h"
#include "modb_manage.h"
struct stored_conn_t *getConn(SEXP r_conn_ref)
{
struct stored_conn_t *sconn = 0;
if (Rf_isString(r_conn_ref)) {
sconn = connectionByName(Rf_translateCharUTF8(STRING_ELT(r_conn_ref, 0)));
} else if (Rf_isInteger(r_conn_ref)) {
sconn = connectionById(Rf_asInteger(r_conn_ref));
} else {
Rf_error("Neither name or id provided");
}
return sconn;
}
#include "R_helpers_p.h"
SEXP modb_connectionInfo(SEXP r_conn_ref)
@@ -28,7 +12,7 @@ SEXP modb_connectionInfo(SEXP r_conn_ref)
struct stored_conn_t *sconn;
SEXP res, conn_name, last_qry, names;
if ((sconn = getConn(r_conn_ref)) == 0) {
if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
return R_NilValue;
}
@@ -115,18 +99,18 @@ SEXP modb_connectToSocket(SEXP r_name, SEXP r_socket,
return Rf_ScalarInteger(sconn->conn_id);
}
SEXP modb_disconnect(SEXP r_conn_ref)
{
struct stored_conn_t *sconn;
int conn_id;
if ((sconn = getConn(r_conn_ref)) == 0) {
if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
return R_NilValue;
}
conn_id = sconn->conn_id;
modbReleaseUse(sconn);
closeConnection(sconn);
destroyStoredConnection(sconn);
@@ -139,7 +123,7 @@ SEXP modb_exists(SEXP r_conn_ref, SEXP r_name)
struct stored_conn_t *sconn;
struct modb_t modb;
if ((sconn = getConn(r_conn_ref)) == 0) {
if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
Rf_error("invalid connection reference\n");
}
@@ -148,6 +132,7 @@ SEXP modb_exists(SEXP r_conn_ref, SEXP r_name)
return Rf_ScalarLogical(modbExists(sconn, &modb) > 0);
}
SEXP modb_create(SEXP r_conn_ref, SEXP r_name, SEXP r_extra_meta)
{
struct stored_conn_t *sconn;
@@ -156,35 +141,32 @@ SEXP modb_create(SEXP r_conn_ref, SEXP r_name, SEXP r_extra_meta)
size_t n_cols;
SEXP r_col, r_col_name, r_col_type, r_col_null;
if ((sconn = getConn(r_conn_ref)) == 0) {
if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
Rf_error("invalid connection reference\n");
}
modb.name = Rf_translateCharUTF8(STRING_ELT(r_name, 0));
modb.name_len = strlen(modb.name);
if (modbExists(sconn, &modb) == 0) {
if (modbExists(sconn, &modb) != 0) {
Rf_warning("an MODB instance named '%s' already exists\n", modb.name);
return Rf_ScalarLogical(FALSE);
}
if (modbCreate(sconn, &modb) != 0) {
modb_destroy(r_conn_ref, r_name);
Rf_warning("failed to create MODB instance");
return Rf_ScalarLogical(FALSE);
Rf_error("failed to create MODB instance");
}
if (modbAccountingCreate(sconn, &modb) != 0) {
modb_destroy(r_conn_ref, r_name);
Rf_warning("failed to create MODB instance");
return Rf_ScalarLogical(FALSE);
Rf_error("failed to create MODB instance");
}
if (!Rf_isNull(r_extra_meta)) {
n_cols = (size_t)Rf_length(r_extra_meta);
cols = (struct column_data_t **)calloc(sizeof(struct column_data_t *), n_cols);
if (cols == 0) {
modb_destroy(r_conn_ref, r_name);
Rf_warning("failed to create MODB instance");
return Rf_ScalarLogical(FALSE);
Rf_error("failed to create MODB instance");
}
for (size_t i = 0; i < n_cols; i++) {
@@ -201,16 +183,14 @@ SEXP modb_create(SEXP r_conn_ref, SEXP r_name, SEXP r_extra_meta)
if (*(cols + i) == 0) {
freeColumns(cols, i);
modb_destroy(r_conn_ref, r_name);
Rf_warning("failed to create MODB instance");
return Rf_ScalarLogical(FALSE);
Rf_error("failed to create MODB instance");
}
}
if (modbMetaExtCreate(sconn, &modb, cols, n_cols) != 0) {
freeColumns(cols, n_cols);
modb_destroy(r_conn_ref, r_name);
Rf_warning("failed to create MODB instance");
return Rf_ScalarLogical(FALSE);
Rf_error("failed to create MODB instance");
}
freeColumns(cols, n_cols);
@@ -223,7 +203,7 @@ SEXP modb_destroy(SEXP r_conn_ref, SEXP r_name)
struct stored_conn_t *sconn;
struct modb_t modb;
if ((sconn = getConn(r_conn_ref)) == 0) {
if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
Rf_error("invalid connection reference\n");
}
@@ -238,3 +218,27 @@ SEXP modb_destroy(SEXP r_conn_ref, SEXP r_name)
return Rf_ScalarLogical(TRUE);
}
SEXP modb_use(SEXP r_conn_ref, SEXP r_name, SEXP r_override)
{
struct stored_conn_t *sconn;
struct modb_t modb;
if ((sconn = getConnectionByRef(r_conn_ref)) == 0) {
Rf_error("invalid connection reference\n");
}
modb.name = Rf_translateCharUTF8(STRING_ELT(r_name, 0));
modb.name_len = strlen(modb.name);
if (modbExists(sconn, &modb) == 0) {
Rf_error("an MODB instance named '%s' does not exist\n", modb.name);
}
if (modbUse(sconn, &modb, Rf_asLogical(r_override)) != 0) {
return Rf_ScalarLogical(FALSE);
}
return Rf_ScalarLogical(TRUE);
}

8
src/R_modb_manage.h
View File

@@ -3,18 +3,24 @@
#include <Rinternals.h>
// Connections
SEXP modb_connectionInfo(SEXP r_conn_ref);
SEXP modb_connectToHost(SEXP r_name, SEXP r_host, SEXP r_port,
SEXP r_username, SEXP r_password, SEXP r_database);
SEXP modb_connectToSocket(SEXP r_name, SEXP r_socket,
SEXP r_username, SEXP r_password, SEXP r_database);
SEXP modb_disconnect(SEXP r_conn_ref);
// MODB instances
SEXP modb_exists(SEXP r_conn_ref, SEXP r_name);
SEXP modb_create(SEXP r_conn_ref, SEXP r_name, SEXP r_extra_meta);
SEXP modb_destroy(SEXP r_conn_ref, SEXP r_name);
// Link connection to MODB instance
SEXP modb_use(SEXP r_conn_ref, SEXP r_name, SEXP r_override);
#endif // H__R_MODB_MANAGE__