/**
* Loops over all the table names in the array and extracts schema
* information.
*
* This method extracts information about a database's schema from the
* database itself and returns this schema as an ezcDbSchema object.
*
* @param array(string) $tables
* @return ezcDbSchema
*/
protected function processSchema(array $tables)
{
$schemaDefinition = array();
array_walk($tables, create_function('&$item,$key', '$item = $item[0];'));
// strip out the prefix and only return tables with the prefix set.
$prefix = ezcDbSchema::$options->tableNamePrefix;
foreach ($tables as $tableName) {
$tableNameWithoutPrefix = substr($tableName, strlen($prefix));
// Process table if there was no prefix, or when a prefix was
// found. In the latter case the prefix would be missing from
// $tableNameWithoutPrefix due to the substr() above, and hence,
// $tableName and $tableNameWithoutPrefix would be different.
if ($prefix === '' || $tableName !== $tableNameWithoutPrefix) {
$fields = $this->fetchTableFields($tableName);
$indexes = $this->fetchTableIndexes($tableName);
$schemaDefinition[$tableNameWithoutPrefix] = ezcDbSchema::createNewTable($fields, $indexes);
}
}
return $schemaDefinition;
}
/**
* Extracts information about a table from the XML element $table
*
* @param SimpleXMLElement $table
*
* @return ezcDbSchemaTable or an inherited class
*/
private function parseTable(SimpleXMLElement $table)
{
$fields = array();
$indexes = array();
foreach ($table->declaration->field as $field) {
$fieldName = (string) $field->name;
$fields[$fieldName] = $this->parseField($field);
}
foreach ($table->declaration->index as $index) {
$indexName = (string) $index->name;
$indexes[$indexName] = $this->parseIndex($index);
}
return ezcDbSchema::createNewTable($fields, $indexes);
}