Implement PREPARE AS statement for ECPG.

Besides implementing the new statement this change fix some issues with the
parsing of PREPARE and EXECUTE statements. The different forms of these
statements are now all handled in a ujnified way.

Author: Matsumura-san <matsumura.ryo@jp.fujitsu.com>

2 files changed, 200 insertions, 1 deletions

diff --git a/src/interfaces/ecpg/test/sql/Makefile b/src/interfaces/ecpg/test/sql/Makefile
index 4e018ccb524..876ca8df3e6 100644
--- a/src/interfaces/ecpg/test/sql/Makefile
+++ b/src/interfaces/ecpg/test/sql/Makefile
@@ -27,7 +27,8 @@ TESTS = array array.c \
         twophase twophase.c \
         insupd insupd.c \
 		declare declare.c \
-		bytea bytea.c
+		bytea bytea.c \
+		prepareas prepareas.c
 
 all: $(TESTS)
 
diff --git a/src/interfaces/ecpg/test/sql/prepareas.pgc b/src/interfaces/ecpg/test/sql/prepareas.pgc
new file mode 100644
index 00000000000..85f03d7e7de
--- /dev/null
+++ b/src/interfaces/ecpg/test/sql/prepareas.pgc
@@ -0,0 +1,198 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+exec sql include ../regression;
+exec sql whenever sqlerror sqlprint;
+
+static void
+check_result_of_insert(void)
+{
+	exec sql begin declare section;
+	int ivar1 = 0, ivar2 = 0;
+	exec sql end declare section;
+
+	exec sql select c1,c2 into :ivar1,:ivar2 from test;
+	printf("%d %d\n", ivar1, ivar2);
+}
+
+int main(void)
+{
+	exec sql begin declare section;
+	int ivar1 = 1, ivar2 = 2;
+	char v_include_dq_name[16], v_include_ws_name[16], v_normal_name[16], v_query[64];
+	exec sql end declare section;
+
+	strcpy(v_normal_name, "normal_name");
+	strcpy(v_include_dq_name, "include_\"_name");
+	strcpy(v_include_ws_name, "include_ _name");
+	strcpy(v_query, "insert into test values(?,?)");
+
+	/*
+	 * preparing for test
+	 */
+	exec sql connect to REGRESSDB1;
+	exec sql begin;
+	exec sql create table test (c1 int, c2 int);
+	exec sql commit work;
+	exec sql begin;
+
+	/*
+	 * Non dynamic statement
+	 */
+	exec sql truncate test;
+	printf("+++++ Test for prepnormal +++++\n");
+	printf("insert into test values(:ivar1,:ivar2)\n");
+	exec sql insert into test values(:ivar1,:ivar2);
+	check_result_of_insert();
+
+	exec sql truncate test;
+	printf("+++++ Test for execute immediate +++++\n");
+	printf("execute immediate \"insert into test values(1,2)\"\n");
+	exec sql execute immediate "insert into test values(1,2)";
+	check_result_of_insert();
+
+	/*
+	 * PREPARE FROM
+	 */
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE ident FROM CString +++++\n");
+	printf("prepare ident_name from \"insert into test values(?,?)\"\n");
+	exec sql prepare ident_name from "insert into test values(?,?)";
+	printf("execute ident_name using :ivar1,:ivar2\n");
+	exec sql execute ident_name using :ivar1,:ivar2;
+	check_result_of_insert();
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE char_variable_normal_name FROM char_variable +++++\n");
+	printf("prepare :v_normal_name from :v_query\n");
+	exec sql prepare :v_normal_name from :v_query;
+	printf("execute :v_normal_name using :ivar1,:ivar2\n");
+	exec sql execute :v_normal_name using :ivar1,:ivar2;
+	check_result_of_insert();
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE char_variable_inc_dq_name FROM char_variable +++++\n");
+	printf("prepare :v_include_dq_name from :v_query\n");
+	exec sql prepare :v_include_dq_name from :v_query;
+	printf("execute :v_include_dq_name using :ivar1,:ivar2\n");
+	exec sql execute :v_include_dq_name using :ivar1,:ivar2;
+	check_result_of_insert();
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE char_variable_inc_ws_name FROM char_variable +++++\n");
+	printf("prepare :v_include_ws_name from :v_query\n");
+	exec sql prepare :v_include_ws_name from :v_query;
+	printf("execute :v_include_ws_name using :ivar1,:ivar2\n");
+	exec sql execute :v_include_ws_name using :ivar1,:ivar2;
+	check_result_of_insert();
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE CString_inc_ws_name FROM char_variable +++++\n");
+	printf("prepare \"include_ _name\" from :v_query\n");
+	exec sql prepare "include_ _name" from :v_query;
+	printf("exec sql execute \"include_ _name\" using :ivar1,:ivar2\n");
+	exec sql execute "include_ _name" using :ivar1,:ivar2;
+	check_result_of_insert();
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE CString_normal_name FROM char_variable +++++\n");
+	printf("prepare \"norma_name\" from :v_query\n");
+	exec sql prepare "normal_name" from :v_query;
+	printf("exec sql execute \"normal_name\" using :ivar1,:ivar2\n");
+	exec sql execute "normal_name" using :ivar1,:ivar2;
+	check_result_of_insert();
+
+	/*
+	 * PREPARE AS
+	 */
+	exec sql deallocate "ident_name";
+	exec sql deallocate "normal_name";
+	exec sql deallocate "include_ _name";
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE ident(typelist) AS +++++\n");
+	printf("prepare ident_name(int,int) as insert into test values($1,$2)\n");
+	exec sql prepare ident_name(int,int) as insert into test values($1,$2);
+	printf("execute ident_name(:ivar1,:ivar2)\n");
+	exec sql execute ident_name(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "ident_name";
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE CString_normal_name(typelist) AS +++++\n");
+	printf("prepare \"normal_name\"(int,int) as insert into test values($1,$2)\n");
+	exec sql prepare "normal_name"(int,int) as insert into test values($1,$2);
+	printf("execute \"normal_name\"(:ivar1,:ivar2)\n");
+	exec sql execute "normal_name"(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "normal_name";
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE CString_include_ws_name(typelist) AS +++++\n");
+	printf("prepare \"include_ _name\"(int,int) as insert into test values($1,$2)\n");
+	exec sql prepare "include_ _name"(int,int) as insert into test values($1,$2);
+	printf("execute \"include_ _name\"(:ivar1,:ivar2)\n");
+	exec sql execute "include_ _name"(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "include_ _name";
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE char_variable_normal_name(typelist) AS +++++\n");
+	printf("prepare :v_normal_name(int,int) as insert into test values($1,$2)\n");
+	exec sql prepare :v_normal_name(int,int) as insert into test values($1,$2);
+	printf("execute :v_normal_name(:ivar1,:ivar2)\n");
+	exec sql execute :v_normal_name(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "normal_name";
+
+	exec sql truncate test;
+	printf("+++++ Test for PREPARE char_variable_include_ws_name(typelist) AS +++++\n");
+	printf("prepare :v_include_ws_name(int,int) as insert into test values($1,$2)\n");
+	exec sql prepare :v_include_ws_name(int,int) as insert into test values($1,$2);
+	printf("execute :v_include_ws_name(:ivar1,:ivar2)\n");
+	exec sql execute :v_include_ws_name(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "include_ _name";
+
+	exec sql truncate test;
+	printf("+++++ Test for EXECUTE :v_normal_name(const,const) +++++\n");
+	printf("prepare :v_normal_name from :v_query\n");
+	exec sql prepare :v_normal_name from :v_query;
+	printf("execute :v_normal_name(1,2)\n");
+	exec sql execute :v_normal_name(1,2);
+	check_result_of_insert();
+	exec sql deallocate "normal_name";
+
+	exec sql truncate test;
+	printf("+++++ Test for EXECUTE :v_normal_name(expr,expr) +++++\n");
+	printf("prepare :v_normal_name from :v_query\n");
+	exec sql prepare :v_normal_name from :v_query;
+	printf("execute :v_normal_name(0+1,1+1)\n");
+	exec sql execute :v_normal_name(0+1,1+1);
+	check_result_of_insert();
+	exec sql deallocate "normal_name";
+
+	exec sql truncate test;
+	printf("+++++ Test for combination PREPARE FROM and EXECUTE ident(typelist) +++++\n");
+	printf("prepare ident_name from :v_query\n");
+	exec sql prepare ident_name from :v_query;
+	printf("execute ident_name(:ivar1,:ivar2)\n");
+	exec sql execute ident_name(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "ident_name";
+
+	exec sql truncate test;
+	printf("+++++ Test for combination PREPARE FROM and EXECUTE CString_include_ws_name(typelist) +++++\n");
+	printf("prepare \"include_ _name\" from :v_query\n");
+	exec sql prepare "include_ _name" from :v_query;
+	printf("execute \"include_ _name\"(:ivar1,:ivar2)\n");
+	exec sql execute "include_ _name"(:ivar1,:ivar2);
+	check_result_of_insert();
+	exec sql deallocate "include_ _name";
+
+	exec sql drop table test;
+	exec sql commit work;
+
+	return 0;
+}