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ENHANCEMENT: added option to truncate (clear) database table before importing a new CSV file with CSVBulkerLoader and ModelAdmin.

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git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@85709 467b73ca-7a2a-4603-9d3b-597d59a354a9
This commit is contained in:
Julian Seidenberg 2009-09-04 00:31:08 +00:00
parent ebce107d07
commit 2cf002e333
2 changed files with 26 additions and 2 deletions
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13
dev/BulkLoader.php
View File

@ -124,15 +124,24 @@ abstract class BulkLoader extends ViewableData {
}
/*
* Load the given file via {@link self::processAll()} and {@link self::processRecord()}.
* Load the given file via {@link self::processAll()} and {@link self::processRecord()}. Optionally truncates (clear) the table before it imports.
*
* @return BulkLoader_Result See {@link self::processAll()}
*/
public function load($filepath, $memory_limit='512M') {
public function load($filepath, $memory_limit='512M', $clear_table_before_import=false) {
ini_set('max_execution_time', 3600);
increase_memory_limit_to($memory_limit);
if ($clear_table_before_import) {
$objectSet = DataObject::get($this->objectClass); //get all instances of the to be imported data object
if (!empty($objectSet)) {
foreach($objectSet as $obj) {
$obj->delete(); //deleting objects ensures that versions are also deleted (truncating would just delete the main table); performance is slower, however
}
}
}
return $this->processAll($filepath);
}

15
tests/dev/CsvBulkLoaderTest.php
View File

@ -31,6 +31,21 @@ class CsvBulkLoaderTest extends SapphireTest {
fclose($file);
}
/**
* Test plain import with clear_table_before_import
*/
function testClearTableBeforeImport() {
$loader = new CsvBulkLoader('CsvBulkLoaderTest_Player');
$filepath = Director::baseFolder() . '/sapphire/tests/dev/CsvBulkLoaderTest_PlayersWithHeader.csv';
$results1 = $loader->load($filepath, '512MB', false); //leave existing data there on first CSV import
$this->assertEquals(4, $results1->Count(), 'Test correct count of imported data on first load');
$results2 = $loader->load($filepath, '512MB', true); //delete existing data before doing second CSV import
$resultDataObject = DataObject::get('CsvBulkLoaderTest_Player'); //get all instances of the loaded DataObject from the database and count them
$this->assertEquals(4, $resultDataObject->Count(), 'Test if existing data is deleted before new data is added');
}
/**
* Test import with manual column mapping