9f16c2bf8e
* *
* update copyright headers with new FSF postal address
* COPYING.txt -> LICENSE.txt (rest of repo to be synced)
130 lines
4.7 KiB
Plaintext
130 lines
4.7 KiB
Plaintext
/*
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* SQLite3 Demo
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*
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* Copyright 2007 P.Chornyj <myorg63@mail.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file LICENSE.txt. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#require "hbsqlit3"
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#define TABLE_SQL "CREATE TABLE image( id INTEGER PRIMARY KEY AUTOINCREMENT, title TEXT(50), image BLOB )"
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PROCEDURE Main()
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LOCAL lCreateIfNotExist := .T.
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LOCAL db := sqlite3_open( "test.s3db", lCreateIfNotExist )
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LOCAL stmt
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LOCAL buff, blob
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IF ! Empty( db )
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sqlite3_exec( db, "PRAGMA auto_vacuum=0" )
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sqlite3_exec( db, "PRAGMA page_size=8192" )
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sqlite3_exec( db, "DROP TABLE image" )
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sqlite3_exec( db, TABLE_SQL )
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stmt := sqlite3_prepare( db, "INSERT INTO image( title, image ) VALUES( :title, :image )" )
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IF ! Empty( stmt )
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buff := sqlite3_file_to_buff( "pngtest.png" )
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IF sqlite3_bind_text( stmt, 1, "pngtest.png" ) == SQLITE_OK .AND. ;
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sqlite3_bind_blob( stmt, 2, @buff ) == SQLITE_OK
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IF sqlite3_step( stmt ) == SQLITE_DONE
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? "Save pngtest.png into BLOB"
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? "INSERT INTO image( title, image ) VALUES( 'pngtest.png', 'pngtest.png' ) - Done"
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ENDIF
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ENDIF
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buff := NIL
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sqlite3_clear_bindings( stmt )
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sqlite3_finalize( stmt )
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ENDIF
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? ""
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? "The number of database rows that were changed: " + hb_ntos( sqlite3_changes( db ) )
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? "Total changes: " + hb_ntos( sqlite3_total_changes( db ) )
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? ""
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sqlite3_sleep( 3000 )
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blob := sqlite3_blob_open( db, NIL, "image", "image", sqlite3_last_insert_rowid( db ), 0 /* 0 - RO; 1- RW */ )
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IF ! Empty( blob )
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? "Open BLOB image - Ok"
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buff := sqlite3_blob_read( blob )
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/* Call sqlite3_blob_bytes() only after sqlite3_blob_read() */
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? "The size in bytes of the blob - ", sqlite3_blob_bytes( blob )
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IF sqlite3_buff_to_file( "pngtest1.png", @buff ) == SQLITE_OK
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? "Save BLOB into pngtest1.png - Done"
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ENDIF
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buff := NIL
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sqlite3_blob_close( blob )
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? "Close BLOB"
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ENDIF
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sqlite3_sleep( 3000 )
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? ""
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? "Save BLOB using sqlite3_column_blob()"
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stmt := sqlite3_prepare( db, "SELECT image FROM image WHERE id == ?5 " )
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IF ! Empty( stmt )
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IF sqlite3_bind_int64( stmt, 5, sqlite3_last_insert_rowid( db ) ) == SQLITE_OK
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IF sqlite3_step( stmt ) == SQLITE_ROW
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buff := sqlite3_column_blob( stmt, 1 )
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IF sqlite3_buff_to_file( "pngtest2.png", @buff ) == SQLITE_OK
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? "Save BLOB into pngtest2.png - Done"
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ENDIF
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buff := NIL
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ENDIF
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sqlite3_clear_bindings( stmt )
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sqlite3_finalize( stmt )
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ENDIF
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ENDIF
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WAIT
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ENDIF
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RETURN
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