Changeset: b99c237c4372 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=b99c237c4372
Modified Files:
sql/backends/monet5/sql_scenario.c
sql/backends/monet5/sql_scenario.h
Branch: Apr2019
Log Message:
Fix transaction management for MAL programs.
diffs (82 lines):
diff --git a/sql/backends/monet5/sql_scenario.c
b/sql/backends/monet5/sql_scenario.c
--- a/sql/backends/monet5/sql_scenario.c
+++ b/sql/backends/monet5/sql_scenario.c
@@ -145,8 +145,8 @@ SQLprelude(Client cntxt, MalBlkPtr mb, M
.language = "msql",
.exitSystem = "SQLexit",
.exitSystemCmd = SQLexit,
- .initClient = "SQLinitClient",
- .initClientCmd = SQLinitClient,
+ .initClient = "SQLinitClientFromMAL",
+ .initClientCmd = SQLinitClientFromMAL,
.exitClient = "SQLexitClient",
.exitClientCmd = SQLexitClient,
.reader = "MALreader",
@@ -288,6 +288,12 @@ SQLprepareClient(Client c, int login)
} else {
be = c->sqlcontext;
m = be->mvc;
+ /* Only reset if there is no active transaction which
+ * can happen when we combine sql.init with msql.
+ */
+ if(m->session->tr->active) {
+ return NULL;
+ }
if(mvc_reset(m, c->fdin, c->fdout, SQLdebug, NR_GLOBAL_VARS) <
0) {
throw(SQL,"sql.initClient", SQLSTATE(HY001)
MAL_MALLOC_FAIL);
}
@@ -703,6 +709,34 @@ SQLinitClient(Client c)
}
str
+SQLinitClientFromMAL(Client c) {
+ str msg = MAL_SUCCEED;
+
+ if ( (msg = SQLinitClient(c)) != MAL_SUCCEED) {
+ return msg;
+ }
+
+ mvc* m = ((backend*) c->sqlcontext)->mvc;
+
+ /* Crucial step:
+ * MAL script that interact with the sql module
+ * have to have a properly initialized transaction.
+ */
+ SQLtrans(m);
+
+ if(*m->errstr) {
+ if (strlen(m->errstr) > 6 && m->errstr[5] == '!')
+ msg = createException(PARSE, "SQLinitClientFromMAL",
"%s", m->errstr);
+ else
+ msg = createException(PARSE, "SQLinitClientFromMAL",
SQLSTATE(42000) "%s", m->errstr);
+ *m->errstr=0;
+ c->mode = FINISHCLIENT;
+ }
+
+ return msg;
+}
+
+str
SQLexitClient(Client c)
{
str err;
@@ -736,7 +770,7 @@ SQLinitEnvironment(Client cntxt, MalBlkP
(void) mb;
(void) stk;
(void) pci;
- if ((err = SQLinitClient(cntxt)) == MAL_SUCCEED)
+ if ((err = SQLinitClientFromMAL(cntxt)) == MAL_SUCCEED)
cntxt->phase[MAL_SCENARIO_EXITCLIENT] = SQLexitClient;
return err;
}
diff --git a/sql/backends/monet5/sql_scenario.h
b/sql/backends/monet5/sql_scenario.h
--- a/sql/backends/monet5/sql_scenario.h
+++ b/sql/backends/monet5/sql_scenario.h
@@ -28,6 +28,7 @@ sql5_export str SQLexit(Client c);
sql5_export str SQLexitClient(Client c);
sql5_export str SQLresetClient(Client c);
sql5_export str SQLinitClient(Client c);
+sql5_export str SQLinitClientFromMAL(Client c);
sql5_export str SQLreader(Client c);
sql5_export str SQLparser(Client c);
sql5_export str SQLengine(Client c);
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