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msi: Reimplement joins to allow joining any number of tables, each of arbitrary size.

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This commit is contained in:
James Hawkins 2007-08-01 14:25:45 -07:00 committed by Alexandre Julliard
parent 4f6a93b9c8
commit 2e6ed06fdc
4 changed files with 200 additions and 172 deletions
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308
dlls/msi/join.c
View file

@ -23,7 +23,6 @@
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/debug.h"
#include "msi.h"
#include "msiquery.h"
#include "objbase.h"
@ -31,157 +30,150 @@
#include "msipriv.h"
#include "query.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(msidb);
typedef struct tagJOINTABLE
{
struct list entry;
MSIVIEW *view;
UINT columns;
UINT rows;
UINT next_rows;
} JOINTABLE;
typedef struct tagMSIJOINVIEW
{
MSIVIEW view;
MSIDATABASE *db;
MSIVIEW *left, *right;
UINT left_count, right_count;
UINT left_rows, right_rows;
struct list tables;
UINT columns;
UINT rows;
} MSIJOINVIEW;
static UINT JOIN_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
MSIVIEW *table;
JOINTABLE *table;
UINT cols = 0;
UINT prev_rows = 1;
TRACE("%p %d %d %p\n", jv, row, col, val );
TRACE("%d, %d\n", row, col);
if( !jv->left || !jv->right )
if (col == 0 || col > jv->columns)
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>(jv->left_count + jv->right_count)) )
if (row >= jv->rows)
return ERROR_FUNCTION_FAILED;
if( row >= (jv->left_rows * jv->right_rows) )
return ERROR_FUNCTION_FAILED;
if( col <= jv->left_count )
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
table = jv->left;
row = (row/jv->right_rows);
}
else
{
table = jv->right;
row = (row % jv->right_rows);
col -= jv->left_count;
if (col <= cols + table->columns)
{
row = (row % (jv->rows / table->next_rows)) / prev_rows;
col -= cols;
break;
}
prev_rows = table->rows;
cols += table->columns;
}
return table->ops->fetch_int( table, row, col, val );
return table->view->ops->fetch_int( table->view, row, col, val );
}
static UINT JOIN_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
MSIVIEW *table;
JOINTABLE *table;
UINT cols = 0;
UINT prev_rows = 1;
TRACE("%p %d %d %p\n", jv, row, col, stm );
if( !jv->left || !jv->right )
if (col == 0 || col > jv->columns)
return ERROR_FUNCTION_FAILED;
if( (col==0) || (col>(jv->left_count + jv->right_count)) )
if (row >= jv->rows)
return ERROR_FUNCTION_FAILED;
if( row >= jv->left_rows * jv->right_rows )
return ERROR_FUNCTION_FAILED;
if( row <= jv->left_count )
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
table = jv->left;
row = (row/jv->right_rows);
}
else
{
table = jv->right;
row = (row % jv->right_rows);
col -= jv->left_count;
if (col <= cols + table->columns)
{
row = (row % (jv->rows / table->next_rows)) / prev_rows;
col -= cols;
break;
}
prev_rows = table->rows;
cols += table->columns;
}
return table->ops->fetch_stream( table, row, col, stm );
return table->view->ops->fetch_stream( table->view, row, col, stm );
}
static UINT JOIN_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
MSIVIEW *table;
TRACE("%p %d %p\n", jv, row, rec );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
if( row >= jv->left_rows * jv->right_rows )
return ERROR_FUNCTION_FAILED;
if( row <= jv->left_count )
{
table = jv->left;
row = (row/jv->right_rows);
}
else
{
table = jv->right;
row = (row % jv->right_rows);
}
return table->ops->get_row(table, row, rec);
FIXME("(%p, %d, %p): stub!\n", view, row, rec);
return ERROR_FUNCTION_FAILED;
}
static UINT JOIN_execute( struct tagMSIVIEW *view, MSIRECORD *record )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
UINT r, *ldata = NULL, *rdata = NULL;
JOINTABLE *table;
UINT r, rows;
TRACE("%p %p\n", jv, record);
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
r = jv->left->ops->execute( jv->left, NULL );
if (r != ERROR_SUCCESS)
return r;
r = jv->right->ops->execute( jv->right, NULL );
if (r != ERROR_SUCCESS)
return r;
/* get the number of rows in each table */
r = jv->left->ops->get_dimensions( jv->left, &jv->left_rows, NULL );
if( r != ERROR_SUCCESS )
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
ERR("can't get left table dimensions\n");
goto end;
table->view->ops->execute(table->view, NULL);
r = table->view->ops->get_dimensions(table->view, &table->rows, NULL);
if (r != ERROR_SUCCESS)
{
ERR("failed to get table dimensions\n");
return r;
}
/* each table must have at least one row */
if (table->rows == 0)
{
jv->rows = 0;
return ERROR_SUCCESS;
}
if (jv->rows == 0)
jv->rows = table->rows;
else
jv->rows *= table->rows;
}
r = jv->right->ops->get_dimensions( jv->right, &jv->right_rows, NULL );
if( r != ERROR_SUCCESS )
rows = jv->rows;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
ERR("can't get right table dimensions\n");
goto end;
rows /= table->rows;
table->next_rows = rows;
}
end:
msi_free( ldata );
msi_free( rdata );
return r;
return ERROR_SUCCESS;
}
static UINT JOIN_close( struct tagMSIVIEW *view )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
TRACE("%p\n", jv );
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
jv->left->ops->close( jv->left );
jv->right->ops->close( jv->right );
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
table->view->ops->close(table->view);
}
return ERROR_SUCCESS;
}
@ -192,16 +184,11 @@ static UINT JOIN_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols
TRACE("%p %p %p\n", jv, rows, cols );
if( cols )
*cols = jv->left_count + jv->right_count;
if (cols)
*cols = jv->columns;
if( rows )
{
if( !jv->left || !jv->right )
return ERROR_FUNCTION_FAILED;
*rows = jv->left_rows * jv->right_rows;
}
if (rows)
*rows = jv->rows;
return ERROR_SUCCESS;
}
@ -210,48 +197,46 @@ static UINT JOIN_get_column_info( struct tagMSIVIEW *view,
UINT n, LPWSTR *name, UINT *type )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
UINT cols = 0;
TRACE("%p %d %p %p\n", jv, n, name, type );
if( !jv->left || !jv->right )
if (n == 0 || n > jv->columns)
return ERROR_FUNCTION_FAILED;
if( (n==0) || (n>(jv->left_count + jv->right_count)) )
return ERROR_FUNCTION_FAILED;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
if (n <= cols + table->columns)
return table->view->ops->get_column_info(table->view, n - cols, name, type);
if( n <= jv->left_count )
return jv->left->ops->get_column_info( jv->left, n, name, type );
cols += table->columns;
}
n = n - jv->left_count;
return jv->right->ops->get_column_info( jv->right, n, name, type );
return ERROR_FUNCTION_FAILED;
}
static UINT JOIN_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
MSIRECORD *rec, UINT row )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
TRACE("%p %d %p\n", jv, eModifyMode, rec );
TRACE("%p %d %p\n", view, eModifyMode, rec);
return ERROR_FUNCTION_FAILED;
}
static UINT JOIN_delete( struct tagMSIVIEW *view )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
JOINTABLE *table;
TRACE("%p\n", jv );
if( jv->left )
jv->left->ops->delete( jv->left );
jv->left = NULL;
LIST_FOR_EACH_ENTRY(table, &jv->tables, JOINTABLE, entry)
{
table->view->ops->delete(table->view);
table->view = NULL;
}
if( jv->right )
jv->right->ops->delete( jv->right );
jv->right = NULL;
msi_free( jv );
msi_free(jv);
return ERROR_SUCCESS;
}
@ -260,10 +245,27 @@ static UINT JOIN_find_matching_rows( struct tagMSIVIEW *view, UINT col,
UINT val, UINT *row, MSIITERHANDLE *handle )
{
MSIJOINVIEW *jv = (MSIJOINVIEW*)view;
UINT i, row_value;
FIXME("%p, %d, %u, %p\n", jv, col, val, *handle);
TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
return ERROR_FUNCTION_FAILED;
if (col == 0 || col > jv->columns)
return ERROR_INVALID_PARAMETER;
for (i = (UINT)*handle; i < jv->rows; i++)
{
if (view->ops->fetch_int( view, i, col, &row_value ) != ERROR_SUCCESS)
continue;
if (row_value == val)
{
*row = i;
(*(UINT *)handle) = i + 1;
return ERROR_SUCCESS;
}
}
return ERROR_NO_MORE_ITEMS;
}
static const MSIVIEWOPS join_ops =
@ -287,13 +289,14 @@ static const MSIVIEWOPS join_ops =
NULL,
};
UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view,
LPCWSTR left, LPCWSTR right )
UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view, LPWSTR tables )
{
MSIJOINVIEW *jv = NULL;
UINT r = ERROR_SUCCESS;
JOINTABLE *table;
LPWSTR ptr;
TRACE("%p (%s,%s)\n", jv, debugstr_w(left), debugstr_w(right) );
TRACE("%p (%s)\n", jv, debugstr_w(tables) );
jv = msi_alloc_zero( sizeof *jv );
if( !jv )
@ -302,35 +305,42 @@ UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view,
/* fill the structure */
jv->view.ops = &join_ops;
jv->db = db;
jv->columns = 0;
jv->rows = 0;
/* create the tables to join */
r = TABLE_CreateView( db, left, &jv->left );
if( r != ERROR_SUCCESS )
{
ERR("can't create left table\n");
goto end;
}
list_init(&jv->tables);
r = TABLE_CreateView( db, right, &jv->right );
if( r != ERROR_SUCCESS )
while (*tables)
{
ERR("can't create right table\n");
goto end;
}
if ((ptr = strchrW(tables, ' ')))
*ptr = '\0';
/* get the number of columns in each table */
r = jv->left->ops->get_dimensions( jv->left, NULL, &jv->left_count );
if( r != ERROR_SUCCESS )
{
ERR("can't get left table dimensions\n");
goto end;
}
table = msi_alloc(sizeof(JOINTABLE));
if (!table)
return ERROR_OUTOFMEMORY;
r = jv->right->ops->get_dimensions( jv->right, NULL, &jv->right_count );
if( r != ERROR_SUCCESS )
{
ERR("can't get right table dimensions\n");
goto end;
r = TABLE_CreateView( db, tables, &table->view );
if( r != ERROR_SUCCESS )
{
ERR("can't create table\n");
goto end;
}
r = table->view->ops->get_dimensions( table->view, NULL, &table->columns );
if( r != ERROR_SUCCESS )
{
ERR("can't get table dimensions\n");
goto end;
}
jv->columns += table->columns;
list_add_head( &jv->tables, &table->entry );
if (!ptr)
break;
tables = ptr + 1;
}
*view = &jv->view;

3
dlls/msi/query.h
View file

@ -119,8 +119,7 @@ UINT UPDATE_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR table,
UINT DELETE_CreateView( MSIDATABASE *db, MSIVIEW **view, MSIVIEW *table );
UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view,
LPCWSTR left, LPCWSTR right );
UINT JOIN_CreateView( MSIDATABASE *db, MSIVIEW **view, LPWSTR tables );
UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, column_info *colinfo, int hold );

36
dlls/msi/sql.y
View file

@ -53,6 +53,7 @@ static LPWSTR SQL_getstring( void *info, const struct sql_str *str );
static INT SQL_getint( void *info );
static int sql_lex( void *SQL_lval, SQL_input *info );
static LPWSTR parser_add_table( LPWSTR list, LPWSTR table );
static void *parser_alloc( void *info, unsigned int sz );
static column_info *parser_alloc_column( void *info, LPCWSTR table, LPCWSTR column );
@ -101,7 +102,7 @@ static struct expr * EXPR_wildcard( void *info );
%nonassoc END_OF_FILE ILLEGAL SPACE UNCLOSED_STRING COMMENT FUNCTION
COLUMN AGG_FUNCTION.
%type <string> table id
%type <string> table tablelist id
%type <column_list> selcollist column column_and_type column_def table_def
%type <column_list> column_assignment update_assign_list constlist
%type <query> query from fromtable selectfrom unorderedsel
@ -466,18 +467,32 @@ fromtable:
if( r != ERROR_SUCCESS || !$$ )
YYABORT;
}
| TK_FROM table TK_COMMA table
| TK_FROM tablelist
{
SQL_input* sql = (SQL_input*) info;
UINT r;
/* only support inner joins on two tables */
r = JOIN_CreateView( sql->db, &$$, $2, $4 );
r = JOIN_CreateView( sql->db, &$$, $2 );
msi_free( $2 );
if( r != ERROR_SUCCESS )
YYABORT;
}
;
tablelist:
table
{
$$ = strdupW($1);
}
|
table TK_COMMA tablelist
{
$$ = parser_add_table($3, $1);
if (!$$)
YYABORT;
}
;
expr:
TK_LP expr TK_RP
{
@ -663,6 +678,19 @@ number:
%%
static LPWSTR parser_add_table(LPWSTR list, LPWSTR table)
{
DWORD size = lstrlenW(list) + lstrlenW(table) + 2;
static const WCHAR space[] = {' ',0};
list = msi_realloc(list, size * sizeof(WCHAR));
if (!list) return NULL;
lstrcatW(list, space);
lstrcatW(list, table);
return list;
}
static void *parser_alloc( void *info, unsigned int sz )
{
SQL_input* sql = (SQL_input*) info;

25
dlls/msi/tests/db.c
View file

@ -2890,10 +2890,7 @@ static void test_join(void)
ok( r == ERROR_SUCCESS, "failed to open view: %d\n", r );
r = MsiViewExecute(hview, 0);
todo_wine
{
ok( r == ERROR_SUCCESS, "failed to execute view: %d\n", r );
}
ok( r == ERROR_SUCCESS, "failed to execute view: %d\n", r );
i = 0;
data_correct = TRUE;
@ -2919,10 +2916,7 @@ static void test_join(void)
}
ok( data_correct, "data returned in the wrong order\n");
todo_wine
{
ok( i == 6, "Expected 6 rows, got %d\n", i );
}
ok( i == 6, "Expected 6 rows, got %d\n", i );
ok( r == ERROR_NO_MORE_ITEMS, "expected no more items: %d\n", r );
MsiViewClose(hview);
@ -3000,7 +2994,7 @@ static void test_join(void)
MsiCloseHandle(hrec);
}
todo_wine ok( data_correct, "data returned in the wrong order\n");
ok( data_correct, "data returned in the wrong order\n");
ok( i == 6, "Expected 6 rows, got %d\n", i );
ok( r == ERROR_NO_MORE_ITEMS, "expected no more items: %d\n", r );
@ -3048,7 +3042,7 @@ static void test_join(void)
i++;
MsiCloseHandle(hrec);
}
todo_wine ok( data_correct, "data returned in the wrong order\n");
ok( data_correct, "data returned in the wrong order\n");
ok( i == 6, "Expected 6 rows, got %d\n", i );
ok( r == ERROR_NO_MORE_ITEMS, "expected no more items: %d\n", r );
@ -3058,10 +3052,10 @@ static void test_join(void)
query = "SELECT * FROM `One`, `Two`, `Three` ";
r = MsiDatabaseOpenView(hdb, query, &hview);
todo_wine ok( r == ERROR_SUCCESS, "failed to open view: %d\n", r );
ok( r == ERROR_SUCCESS, "failed to open view: %d\n", r );
r = MsiViewExecute(hview, 0);
todo_wine ok( r == ERROR_SUCCESS, "failed to execute view: %d\n", r );
ok( r == ERROR_SUCCESS, "failed to execute view: %d\n", r );
i = 0;
data_correct = TRUE;
@ -3099,11 +3093,8 @@ static void test_join(void)
}
ok( data_correct, "data returned in the wrong order\n");
todo_wine
{
ok( i == 6, "Expected 6 rows, got %d\n", i );
ok( r == ERROR_NO_MORE_ITEMS, "expected no more items: %d\n", r );
}
ok( i == 6, "Expected 6 rows, got %d\n", i );
ok( r == ERROR_NO_MORE_ITEMS, "expected no more items: %d\n", r );
MsiViewClose(hview);
MsiCloseHandle(hview);