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pragmaSpecialTest.rex    162 lines (132 with data), 6.2 kB

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#!/usr/bin/rexx
/*----------------------------------------------------------------------------*/
/* */
/* Copyright (c) 2012-2012 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. */
/* */
/*----------------------------------------------------------------------------*/
/**
* pragmaSpecialTest.rex
*
* One of the non-standard SQL features of SQLitet is the PRAGMA statement.
*
* "The pragma command is specific to SQLite and is very unlikely to be
* compatible with any other SQL database engine."
*
* PRAGMA statements are executed like any other SQL. Some pragmas return
* tables, some do not. Unknown pragmas are ignored by SQLite. Some pragmas
* set values, some return a single value.
*
* Because of these differences, ooSQLite wraps the execution of a pragma in
* the pragma() method. You would not have to use the pragma() method, you
* could instantiate an ooSQLiteStmt and execute the SQL like any other SQL.
*
* This test issues pragmas that return a list of values.
*/
dbFile = 'ooFoods.rdbx'
db = .ooSQLiteConnection~new(dbFile, .ooSQLite~OPEN_READWRITE, .ooSQLite~OO_ARRAY_OF_ARRAYS)
if db~initCode <> 0 then do
say 'ooSQLiteConnection initialization err:' db~initCode
say ' Error code:' db~lastErrCode '('db~lastErrMsg')'
if db~initCode == 14 then do
say ' Database file name:' db~fileName '(Is this the correct database?)'
end
db~close
return 99
end
ret = db~pragma('compile_options')
z = printResult('compile_options', ret)
ret = db~pragma('collation_list')
z = printResult('collation_list', ret)
ret = db~pragma('database_list')
z = printResult('database_list', ret)
-- There are no foreign keys in ooFoods.rdbx
ret = db~pragma('foreign_key_list', 'foods')
z = printResult('foreign_key_list table: foods', ret)
-- We need an index for index_info and index_list, but ooFoods.rdbx does not
-- have any indexes. Unlike foreign key above, we create a temp index and
-- then delete it when we are done with it.
sql = 'CREATE INDEX temp_idx ON foods (name, type_id)'
stmt = .ooSQLiteStmt~new(db, sql)
ret = stmt~step
stmt~finalize
ret = db~pragma('index_info', 'temp_idx')
z = printResult('index_info index: temp_idx', ret)
ret = db~pragma('index_list', 'foods')
z = printResult('index_list table: foods', ret)
sql = 'DROP INDEX temp_idx'
stmt = .ooSQLiteStmt~new(db, sql)
ret = stmt~step
stmt~finalize
ret = db~pragma('table_info', 'foods')
z = printResult('table_info table: foods', ret)
db~close
::requires 'ooSQLite.cls'
::routine printResult
use arg n, ret
say 'Pragma:' n
if ret~items == 0 then do
say 'Result: No data'
say; say; say
return 0
end
say 'Result:'
-- We do some special formatting of the table output below because we know
-- what is needed to display all the data for some of the pragmas.
colCount = ret[1]~items
rowCount = ret~items
line = ''
record = ret[1]
if n == 'database_list' then do
line = record[1]~left(7) record[2]~left(7) record[3]
end
else do j = 1 to colCount
line ||= record[j]~left(14)
end
say line
say '='~copies(80)
do i = 2 to rowCount
line = ''
record = ret[i]
width = 14
if n == 'compile_options' then width = 65
if n == 'database_list' then do
line = record[1]~left(7) record[2]~left(7) record[3]
end
else do j = 1 to colCount
line ||= record[j]~left(width)
end
say line
end
say; say; say
return 0