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Introduced customised "create table" DDL statements per database type and made table creation statement in PostgreSQL idempotent so that the DDL generated by mdbtools works nicely with database versioning tools such as flyway or liquibase.

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This commit is contained in:
Jose Hernandez 2021-07-31 13:33:54 +01:00
parent a73202c8df
commit cec507b967
2 changed files with 14 additions and 3 deletions
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4
include/mdbtools.h
View File

@ -227,6 +227,7 @@ typedef struct {
const char *date_fmt;
const char *shortdate_fmt;
const char *charset_statement;
const char *create_table_statement;
const char *drop_statement;
const char *constaint_not_empty_statement;
const char *column_comment_statement;
@ -564,7 +565,8 @@ void mdb_register_backend(MdbHandle *mdb, char *backend_name, guint32 capabiliti
const MdbBackendType *type_autonum,
const char *short_now, const char *long_now,
const char *date_fmt, const char *shortdate_fmt,
const char *charset_statement, const char *drop_statement, const char *constaint_not_empty_statement,
const char *charset_statement, const char *create_table_statement,
const char *drop_statement, const char *constaint_not_empty_statement,
const char *column_comment_statement, const char *per_column_comment_statement,
const char *table_comment_statement, const char *per_table_comment_statement,
gchar* (*quote_schema_name)(const gchar*, const gchar*));

13
src/libmdb/backend.c
View File

@ -303,6 +303,7 @@ void mdb_init_backends(MdbHandle *mdb)
NULL,
NULL,
"-- That file uses encoding %s\n",
"CREATE TABLE %s\n",
"DROP TABLE %s;\n",
NULL,
NULL,
@ -317,6 +318,7 @@ void mdb_init_backends(MdbHandle *mdb)
NULL,
NULL,
"-- That file uses encoding %s\n",
"CREATE TABLE %s\n",
"DROP TABLE %s;\n",
"ALTER TABLE %s ADD CHECK (%s <>'');\n",
"COMMENT ON COLUMN %s.%s IS %s;\n",
@ -331,6 +333,7 @@ void mdb_init_backends(MdbHandle *mdb)
NULL,
NULL,
"-- That file uses encoding %s\n",
"CREATE TABLE %s\n",
"DROP TABLE %s;\n",
NULL,
"COMMENT ON COLUMN %s.%s IS %s;\n",
@ -345,6 +348,7 @@ void mdb_init_backends(MdbHandle *mdb)
"%Y-%m-%d %H:%M:%S",
"%Y-%m-%d",
"SET client_encoding = '%s';\n",
"CREATE TABLE IF NOT EXISTS %s\n",
"DROP TABLE IF EXISTS %s;\n",
"ALTER TABLE %s ADD CHECK (%s <>'');\n",
"COMMENT ON COLUMN %s.%s IS %s;\n",
@ -359,6 +363,7 @@ void mdb_init_backends(MdbHandle *mdb)
"%Y-%m-%d %H:%M:%S",
"%Y-%m-%d",
"-- That file uses encoding %s\n",
"CREATE TABLE %s\n",
"DROP TABLE IF EXISTS %s;\n",
"ALTER TABLE %s ADD CHECK (%s <>'');\n",
NULL,
@ -373,6 +378,7 @@ void mdb_init_backends(MdbHandle *mdb)
"%Y-%m-%d %H:%M:%S",
"%Y-%m-%d",
"-- That file uses encoding %s\n",
"CREATE TABLE %s\n",
"DROP TABLE IF EXISTS %s;\n",
NULL,
NULL,
@ -386,7 +392,9 @@ void mdb_register_backend(MdbHandle *mdb, char *backend_name, guint32 capabiliti
const MdbBackendType *backend_type, const MdbBackendType *type_shortdate, const MdbBackendType *type_autonum,
const char *short_now, const char *long_now,
const char *date_fmt, const char *shortdate_fmt,
const char *charset_statement, const char *drop_statement,
const char *charset_statement,
const char *create_table_statement,
const char *drop_statement,
const char *constaint_not_empty_statement,
const char *column_comment_statement,
const char *per_column_comment_statement,
@ -404,6 +412,7 @@ void mdb_register_backend(MdbHandle *mdb, char *backend_name, guint32 capabiliti
backend->date_fmt = date_fmt;
backend->shortdate_fmt = shortdate_fmt;
backend->charset_statement = charset_statement;
backend->create_table_statement = create_table_statement;
backend->drop_statement = drop_statement;
backend->constaint_not_empty_statement = constaint_not_empty_statement;
backend->column_comment_statement = column_comment_statement;
@ -792,7 +801,7 @@ generate_table_schema(FILE *outfile, MdbCatalogEntry *entry, char *dbnamespace,
fprintf (outfile, mdb->default_backend->drop_statement, quoted_table_name);
/* create the table */
fprintf (outfile, "CREATE TABLE %s\n", quoted_table_name);
fprintf (outfile, mdb->default_backend->create_table_statement, quoted_table_name);
fprintf (outfile, " (\n");
table = mdb_read_table (entry);