/**
* Returns the number of differences.
*
* Compares the tables of the fromDatabase and the toDatabase, and modifies
* the inner databaseDiff if necessary.
*
* @param boolean $caseInsensitive
* @return integer
*/
public function compareTables($caseInsensitive = false)
{
$fromDatabaseTables = $this->fromDatabase->getTables();
$toDatabaseTables = $this->toDatabase->getTables();
$databaseDifferences = 0;
// check for new tables in $toDatabase
foreach ($toDatabaseTables as $table) {
if ($this->isTableExcluded($table)) {
continue;
}
if (!$this->fromDatabase->hasTable($table->getName(), $caseInsensitive) && !$table->isSkipSql()) {
$this->databaseDiff->addAddedTable($table->getName(), $table);
$databaseDifferences++;
}
}
// check for removed tables in $toDatabase
if ($this->getRemoveTable()) {
foreach ($fromDatabaseTables as $table) {
if ($this->isTableExcluded($table)) {
continue;
}
if (!$this->toDatabase->hasTable($table->getName(), $caseInsensitive) && !$table->isSkipSql()) {
$this->databaseDiff->addRemovedTable($table->getName(), $table);
$databaseDifferences++;
}
}
}
// check for table differences
foreach ($fromDatabaseTables as $fromTable) {
if ($this->isTableExcluded($fromTable)) {
continue;
}
if ($this->toDatabase->hasTable($fromTable->getName(), $caseInsensitive)) {
$toTable = $this->toDatabase->getTable($fromTable->getName(), $caseInsensitive);
$databaseDiff = TableComparator::computeDiff($fromTable, $toTable, $caseInsensitive);
if ($databaseDiff) {
$this->databaseDiff->addModifiedTable($fromTable->getName(), $databaseDiff);
$databaseDifferences++;
}
}
}
// check for table renamings
foreach ($this->databaseDiff->getAddedTables() as $addedTableName => $addedTable) {
foreach ($this->databaseDiff->getRemovedTables() as $removedTableName => $removedTable) {
if (!TableComparator::computeDiff($addedTable, $removedTable, $caseInsensitive)) {
// no difference except the name, that's probably a renaming
if ($this->getWithRenaming()) {
$this->databaseDiff->addRenamedTable($removedTableName, $addedTableName);
$this->databaseDiff->removeAddedTable($addedTableName);
$this->databaseDiff->removeRemovedTable($removedTableName);
$databaseDifferences--;
} else {
$this->databaseDiff->addPossibleRenamedTable($removedTableName, $addedTableName);
}
// skip to the next added table
break;
}
}
}
return $databaseDifferences;
}
