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#!/usr/bin/rexx
/*----------------------------------------------------------------------------*/
/* */
/* Copyright (c) 2012-2013 Rexx Language Association. All rights reserved. */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the Common Public License v1.0 which accompanies this */
/* distribution. A copy is also available at the following address: */
/* http://www.oorexx.org/license.html */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in */
/* the documentation and/or other materials provided with the distribution. */
/* */
/* Neither the name of Rexx Language Association nor the names */
/* of its contributors may be used to endorse or promote products */
/* derived from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* */
/*----------------------------------------------------------------------------*/
/**
* insertNull.rex
*
* This example shows how to insert records into a table where the value for a
* column in the table can be / is NULL.
*
* The approach taken here is to use a parameterized SQL statement. There is
* also the insertNullTwo.rex program that shows a second approach. Both
* approaches are useful for preventing SQL Injection flaws in an application.
*
*/
-- Open the database. We don't check for error here, an error is unlikely.
db = .ooSQLiteConnection~new('nullTest.rdbx')
-- Drop the table we are going to use so that this example can be run multiple
-- times without error.
sql = "DROP TABLE IF EXISTS main.test_table"
stmt = .ooSQLiteStmt~new(db, sql)
if stmt~initCode \== db~OK then do
say 'Error 1:' stmt~lastErrCode stmt~lastErrMsg
db~close
return 99
end
ret = stmt~step
stmt~finalize
if ret \== stmt~DONE then do
say 'Error 2:' db~errCode db~errMsg
db~close
return 99
end
-- Now create our table:
sql = "CREATE TABLE test_table (" || .endOfLine || -
" id INTEGER PRIMARY KEY," || .endOfLine || -
" fName TEXT," || .endOfLine || -
" lName TEXT," || .endOfLine || -
" phone TEXT," || .endOfLine || -
" type TEXT NOT NULL DEFAULT 'Home'" || .endOfLine || -
");"
stmt = .ooSQLiteStmt~new(db, sql)
if stmt~initCode \== db~OK then do
say 'Error 3:' stmt~lastErrCode stmt~lastErrMsg
db~close
return 99
end
ret = stmt~step
stmt~finalize
if ret \== stmt~DONE then do
say 'Error 4:' db~errCode db~errMsg
db~close
return 99
end
-- Get the values for our data. Here the values come from our program here,
-- so the source should be trustworthy. But, it the values instead came from
-- user entered data, you would definitely need to protect from SQL injection:
values = getRecordValues()
-- Create a parameterized SQL statement
sql = "INSERT INTO test_table (fName, lName, phone) VALUES(?1, ?2, ?3);"
stmt = .ooSQLiteStmt~new(db, sql)
if stmt~initCode \== db~OK then do
say 'Error 5:' stmt~lastErrCode stmt~lastErrMsg
db~close
return 99
end
-- Now insert how ever many rows we have. Count is used here to generate the
-- Error message if we have an error so that we have a clue as to where the
-- error occurred:
count = 5
do r over values
count += 1
do i = 1 to r~items
if r[i] == .nil then ret = stmt~bindNull(i)
else ret = stmt~bindText(i, r[i])
end
ret = stmt~step
if ret \== stmt~DONE then do
say 'Error' count':' db~errCode db~errMsg
stmt~finalize
db~close
return 99
end
stmt~reset
end
stmt~finalize
-- Print out the data in the table. printTableWithNulls() is a .rex program
-- in this directory. Here we are calling it as a function.
ret = 'printTableWithNulls'(db, "test_table")
db~close
return 0
::requires 'ooSQLite.cls'
/* Just generate some random data for the test_table table. */
::routine getRecordValues
vals = .array~new
vals~append(.array~of('Sam', .nil, '234-5566'))
vals~append(.array~of(.nil, 'Franks', .nil))
vals~append(.array~of('Howard', 'Johnson', '674-2920'))
vals~append(.array~of('Larry', .nil, .nil))
vals~append(.array~of('Susan', 'McColl', '556-1297'))
vals~append(.array~of(.nil, .nil, '858-444-1388'))
vals~append(.array~of('Mary', 'Hisante', .nil))
vals~append(.array~of(.nil, 'Edwards', '234-5566'))
vals~append(.array~of('Alice', 'Tolkas', '443-564-9904'))
vals~append(.array~of('June', 'Cleaver', '944-7623'))
vals~append(.array~of('Ward', 'Cleaver', '944-7623'))
vals~append(.array~of('Tobey', .nil, .nil))
return vals