Oracle Datasource CakePHP 2.0

Mon, 09 Jan 2012 10:03:42 EST

/**
* Oracle layer for DBO.
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs.model.datasources.dbo
* @since CakePHP v 1.2.0.4041
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
App::uses('DboSource', 'Model/Datasource');

/**
* Oracle layer for DBO.
*
* Long description for class
*
* @package cake
* @subpackage cake.cake.libs.model.datasources.dbo
*/
class Oracle extends DboSource {

/**
* Configuration options
*
* @var array
* @access public
*/
var $config = array();

/**
* Alias
*
* @var string
*/
var $alias = '';

/**
* Sequence names as introspected from the database
*/
var $_sequences = array();

/**
* Transaction in progress flag
*
* @var boolean
*/
var $__transactionStarted = false;

/**
* Column definitions
*
* @var array
* @access public
*/
var $columns = array(
'primary_key' => array('name' => ''),
'string' => array('name' => 'varchar2', 'limit' => '255'),
'text' => array('name' => 'varchar2'),
'integer' => array('name' => 'number'),
'float' => array('name' => 'float'),
'datetime' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
'timestamp' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
'time' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
'date' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
'binary' => array('name' => 'bytea'),
'boolean' => array('name' => 'boolean'),
'number' => array('name' => 'number'),
'inet' => array('name' => 'inet'));

/**
* Connection object
*
* @var mixed
* @access protected
*/
var $connection;

/**
* Query limit
*
* @var int
* @access protected
*/
var $_limit = -1;

/**
* Query offset
*
* @var int
* @access protected
*/
var $_offset = 0;

/**
* Enter description here...
*
* @var unknown_type
* @access protected
*/
var $_map;

/**
* Current Row
*
* @var mixed
* @access protected
*/
var $_currentRow;

/**
* Number of rows
*
* @var int
* @access protected
*/
var $_numRows;

/**
* Query results
*
* @var mixed
* @access protected
*/
var $_results;

/**
* Last error issued by oci extension
*
* @var unknown_type
*/
var $_error;

/**
* Base configuration settings for MySQL driver
*
* @var array
*/
var $_baseConfig = array(
'persistent' => true,
'host' => 'localhost',
'login' => 'system',
'password' => '',
'database' => 'cake',
'nls_sort' => '',
'nls_sort' => ''
);

/**
* Table-sequence map
*
* @var unknown_type
*/
var $_sequenceMap = array();

/**
* Connects to the database using options in the given configuration array.
*
* @return boolean True if the database could be connected, else false
* @access public
*/
function connect() {
$config = $this->config;
$this->connected = false;
$config['charset'] = !empty($config['charset']) ? $config['charset'] : null;

if (!$config['persistent']) {
$this->connection = @ocilogon($config['login'], $config['password'], $config['database'], $config['charset']);
} else {
$this->connection = @ociplogon($config['login'], $config['password'], $config['database'], $config['charset']);
}

if ($this->connection) {
$this->connected = true;
if (!empty($config['nls_sort'])) {
$this->execute('ALTER SESSION SET NLS_SORT='.$config['nls_sort']);
}

if (!empty($config['nls_comp'])) {
$this->execute('ALTER SESSION SET NLS_COMP='.$config['nls_comp']);
}
$this->execute("ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'");
} else {
$this->connected = false;
$this->_setError();
return false;
}
return $this->connected;
}

/**
* Keeps track of the most recent Oracle error
*
*/
function _setError($source = null, $clear = false) {
if ($source) {
$e = ocierror($source);
} else {
$e = ocierror();
}
$this->_error = $e['message'];
if ($clear) {
$this->_error = null;
}
}

/**
* Sets the encoding language of the session
*
* @param string $lang language constant
* @return bool
*/
function setEncoding($lang) {
if (!$this->execute('ALTER SESSION SET NLS_LANGUAGE='.$lang)) {
return false;
}
return true;
}

/**
* Gets the current encoding language
*
* @return string language constant
*/
function getEncoding() {
$sql = 'SELECT VALUE FROM NLS_SESSION_PARAMETERS WHERE PARAMETER=\'NLS_LANGUAGE\'';
if (!$this->execute($sql)) {
return false;
}

if (!$row = $this->fetchRow()) {
return false;
}
return $row[0]['VALUE'];
}

/**
* Disconnects from database.
*
* @return boolean True if the database could be disconnected, else false
* @access public
*/
function disconnect() {
if ($this->connection) {
$this->connected = !ocilogoff($this->connection);
return !$this->connected;
}
}

/**
* Scrape the incoming SQL to create the association map. This is an extremely
* experimental method that creates the association maps since Oracle will not tell us.
*
* @param string $sql
* @return false if sql is nor a SELECT
* @access protected
*/
function _scrapeSQL($sql) {
$sql = str_replace("\"", '', $sql);
$preFrom = preg_split('/\bFROM\b/', $sql);
$preFrom = $preFrom[0];
$find = array('SELECT');
$replace = array('');
$fieldList = trim(str_replace($find, $replace, $preFrom));
$fields = preg_split('/,\s+/', $fieldList);//explode(', ', $fieldList);
$lastTableName = '';

foreach($fields as $key => $value) {
if ($value != 'COUNT(*) AS count') {
if (preg_match('/\s+(\w+(\.\w+)*)$/', $value, $matches)) {
$fields[$key] = $matches[1];

if (preg_match('/^(\w+\.)/', $value, $matches)) {
$fields[$key] = $matches[1] . $fields[$key];
$lastTableName = $matches[1];
}
}
/*
if (preg_match('/(([[:alnum:]_]+)\.[[:alnum:]_]+)(\s+AS\s+(\w+))?$/i', $value, $matches)) {
$fields[$key] = isset($matches[4]) ? $matches[2] . '.' . $matches[4] : $matches[1];
}
*/
}
}
$this->_map = array();

foreach($fields as $f) {
$e = explode('.', $f);
if (count($e) > 1) {
$table = $e[0];
$field = strtolower($e[1]);
} else {
$table = 0;
$field = $e[0];
}
$this->_map[] = array($table, $field);
}
}

/**
* Modify a SQL query to limit (and offset) the result set
*
* @param integer $limit Maximum number of rows to return
* @param integer $offset Row to begin returning
* @return modified SQL Query
* @access public
*/
function limit($limit = -1, $offset = 0) {
$this->_limit = (int) $limit;
$this->_offset = (int) $offset;
}

/**
* Returns number of rows in previous resultset. If no previous resultset exists,
* this returns false.
*
* @return integer Number of rows in resultset
* @access public
*/
function lastNumRows() {
return $this->_numRows;
}

/**
* Executes given SQL statement. This is an overloaded method.
*
* @param string $sql SQL statement
* @return resource Result resource identifier or null
* @access protected
*/
function _execute($sql) {
$this->_statementId = @ociparse($this->connection, $sql);
if (!$this->_statementId) {
$this->_setError($this->connection);
return false;
}

if ($this->__transactionStarted) {
$mode = OCI_DEFAULT;
} else {
$mode = OCI_COMMIT_ON_SUCCESS;
}

if (!@ociexecute($this->_statementId, $mode)) {
$this->_setError($this->_statementId);
return false;
}

$this->_setError(null, true);

switch(ocistatementtype($this->_statementId)) {
case 'DESCRIBE':
case 'SELECT':
$this->_scrapeSQL($sql);
break;
default:
return $this->_statementId;
break;
}

if ($this->_limit >= 1) {
ocisetprefetch($this->_statementId, $this->_limit);
} else {
ocisetprefetch($this->_statementId, 3000);
}
$this->_numRows = ocifetchstatement($this->_statementId, $this->_results, $this->_offset, $this->_limit, OCI_NUM | OCI_FETCHSTATEMENT_BY_ROW);
$this->_currentRow = 0;
$this->limit();
return $this->_statementId;
}

/**
* Fetch result row
*
* @return array
* @access public
*/
function fetchRow() {
if ($this->_currentRow >= $this->_numRows) {
ocifreestatement($this->_statementId);
$this->_map = null;
$this->_results = null;
$this->_currentRow = null;
$this->_numRows = null;
return false;
}
$resultRow = array();

foreach($this->_results[$this->_currentRow] as $index => $field) {
list($table, $column) = $this->_map[$index];

if (strpos($column, ' count')) {
$resultRow[0]['count'] = $field;
} else {
$resultRow[$table][$column] = $this->_results[$this->_currentRow][$index];
}
}
$this->_currentRow++;
return $resultRow;
}

/**
* Fetches the next row from the current result set
*
* @return unknown
*/
function fetchResult() {
return $this->fetchRow();
}

/**
* Checks to see if a named sequence exists
*
* @param string $sequence
* @return bool
* @access public
*/
function sequenceExists($sequence) {
$sql = "SELECT SEQUENCE_NAME FROM USER_SEQUENCES WHERE SEQUENCE_NAME = '$sequence'";
if (!$this->execute($sql)) {
return false;
}
return $this->fetchRow();
}

/**
* Creates a database sequence
*
* @param string $sequence
* @return bool
* @access public
*/
function createSequence($sequence) {
$sql = "CREATE SEQUENCE $sequence";
return $this->execute($sql);
}

/**
* Create trigger
*
* @param string $table
* @return mixed
* @access public
*/
function createTrigger($table) {
$sql = "CREATE OR REPLACE TRIGGER pk_$table" . "_trigger BEFORE INSERT ON $table FOR EACH ROW BEGIN SELECT pk_$table.NEXTVAL INTO :NEW.ID FROM DUAL; END;";
return $this->execute($sql);
}

/**
* Returns an array of tables in the database. If there are no tables, an error is
* raised and the application exits.
*
* @return array tablenames in the database
* @access public
*/
function listSources() {
$cache = parent::listSources();
if ($cache != null) {
return $cache;
}
$sql = 'SELECT view_name AS name FROM all_views UNION SELECT table_name AS name FROM all_tables';

if (!$this->execute($sql)) {
return false;
}
$sources = array();

while($r = $this->fetchRow()) {
$sources[] = strtolower($r[0]['name']);
}
parent::listSources($sources);
return $sources;
}

/**
* Returns an array of the fields in given table name.
*
* @param object instance of a model to inspect
* @return array Fields in table. Keys are name and type
* @access public
*/
public function describe(&$model) {
$table = $this->fullTableName($model, false);

if (!empty($model->sequence)) {
$this->_sequenceMap[$table] = $model->sequence;
} elseif (!empty($model->table)) {
$this->_sequenceMap[$table] = $model->table . '_seq';
}

$cache = parent::describe($model);

if ($cache != null) {
return $cache;
}

$sql = 'SELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH FROM all_tab_columns WHERE table_name = \'';
$sql .= strtoupper($this->fullTableName($model)) . '\'';

if (!$this->execute($sql)) {
return false;
}

$fields = array();

for ($i = 0; $row = $this->fetchRow(); $i++) {
$fields[strtolower($row[0]['COLUMN_NAME'])] = array(
'type'=> $this->column($row[0]['DATA_TYPE']),
'length'=> $row[0]['DATA_LENGTH']
);
}
#$this->__cacheDescription($this->fullTableName($model, false), $fields);

return $fields;
}

/**
* Deletes all the records in a table and drops all associated auto-increment sequences.
* Using DELETE instead of TRUNCATE because it causes locking problems.
*
* @param mixed $table A string or model class representing the table to be truncated
* @param integer $reset If -1, sequences are dropped, if 0 (default), sequences are reset,
* and if 1, sequences are not modified
* @return boolean SQL TRUNCATE TABLE statement, false if not applicable.
* @access public
*
*/
function truncate($table, $reset = 0) {

if (empty($this->_sequences)) {
$sql = "SELECT sequence_name FROM all_sequences";
$this->execute($sql);
while ($row = $this->fetchRow()) {
$this->_sequences[] = strtolower($row[0]['sequence_name']);
}
}

$this->execute('DELETE FROM ' . $this->fullTableName($table));
if (!isset($this->_sequenceMap[$table]) || !in_array($this->_sequenceMap[$table], $this->_sequences)) {
return true;
}
if ($reset === 0) {
$this->execute("SELECT {$this->_sequenceMap[$table]}.nextval FROM dual");
$row = $this->fetchRow();
$currval = $row[$this->_sequenceMap[$table]]['nextval'];

$this->execute("SELECT min_value FROM all_sequences WHERE sequence_name = '{$this->_sequenceMap[$table]}'");
$row = $this->fetchRow();
$min_value = $row[0]['min_value'];

if ($min_value == 1) $min_value = 0;
$offset = -($currval - $min_value);

$this->execute("ALTER SEQUENCE {$this->_sequenceMap[$table]} INCREMENT BY $offset MINVALUE $min_value");
$this->execute("SELECT {$this->_sequenceMap[$table]}.nextval FROM dual");
$this->execute("ALTER SEQUENCE {$this->_sequenceMap[$table]} INCREMENT BY 1");
} else {
//$this->execute("DROP SEQUENCE {$this->_sequenceMap[$table]}");
}
return true;
}

/**
* Enables, disables, and lists table constraints
*
* Note: This method could have been written using a subselect for each table,
* however the effort Oracle expends to run the constraint introspection is very high.
* Therefore, this method caches the result once and loops through the arrays to find
* what it needs. It reduced my query time by 50%. YMMV.
*
* @param string $action
* @param string $table
* @return mixed boolean true or array of constraints
*/
function constraint($action, $table) {
if (empty($table)) {
trigger_error(__('Must specify table to operate on constraints', true));
}

$table = strtoupper($table);

if (empty($this->_keyConstraints)) {
$sql = "SELECT
table_name,
c.constraint_name
FROM all_cons_columns cc
LEFT JOIN all_indexes i ON (cc.constraint_name = i.index_name)
LEFT JOIN all_constraints c ON(c.constraint_name = cc.constraint_name)";
$this->execute($sql);
while ($row = $this->fetchRow()) {
$this->_keyConstraints[] = array($row[0]['table_name'], $row['c']['constraint_name']);
}
}

$relatedKeys = array();
foreach ($this->_keyConstraints as $c) {
if ($c[0] == $table) {
$relatedKeys[] = $c[1];
}
}

if (empty($this->_constraints)) {
$sql = "SELECT
table_name,
constraint_name,
r_constraint_name
FROM
all_constraints";
$this->execute($sql);
while ($row = $this->fetchRow()) {
$this->_constraints[] = $row[0];
}
}

$constraints = array();
foreach ($this->_constraints as $c) {
if (in_array($c['r_constraint_name'], $relatedKeys)) {
$constraints[] = array($c['table_name'], $c['constraint_name']);
}
}

foreach ($constraints as $c) {
list($table, $constraint) = $c;
switch ($action) {
case 'enable':
$this->execute("ALTER TABLE $table ENABLE CONSTRAINT $constraint");
break;
case 'disable':
$this->execute("ALTER TABLE $table DISABLE CONSTRAINT $constraint");
break;
case 'list':
return $constraints;
break;
default:
trigger_error(__('DboOracle::constraint() accepts only enable, disable, or list', true));
}
}
return true;
}

/**
* Returns an array of the indexes in given table name.
*
* @param string $model Name of model to inspect
* @return array Fields in table. Keys are column and unique
*/
function index($model) {
$index = array();
$table = $this->fullTableName($model, false);
if ($table) {
$indexes = $this->query('SELECT
cc.table_name,
cc.column_name,
cc.constraint_name,
c.constraint_type,
i.index_name,
i.uniqueness
FROM all_cons_columns cc
LEFT JOIN all_indexes i ON(cc.constraint_name = i.index_name)
LEFT JOIN all_constraints c ON(c.constraint_name = cc.constraint_name)
WHERE cc.table_name = \'' . strtoupper($table) .'\'');
foreach ($indexes as $i => $idx) {
if ($idx['c']['constraint_type'] == 'P') {
$key = 'PRIMARY';
} else {
continue;
}
if (!isset($index[$key])) {
$index[$key]['column'] = strtolower($idx['cc']['column_name']);
$index[$key]['unique'] = intval($idx['i']['uniqueness'] == 'UNIQUE');
} else {
if (!is_array($index[$key]['column'])) {
$col[] = $index[$key]['column'];
}
$col[] = strtolower($idx['cc']['column_name']);
$index[$key]['column'] = $col;
}
}
}
return $index;
}

/**
* Generate a Oracle Alter Table syntax for the given Schema comparison
*
* @param unknown_type $schema
* @return unknown
*/
function alterSchema($compare, $table = null) {
if (!is_array($compare)) {
return false;
}
$out = '';
$colList = array();
foreach($compare as $curTable => $types) {
if (!$table || $table == $curTable) {
$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";
foreach($types as $type => $column) {
switch($type) {
case 'add':
foreach($column as $field => $col) {
$col['name'] = $field;
$alter = 'ADD '.$this->buildColumn($col);
if (isset($col['after'])) {
$alter .= ' AFTER '. $this->name($col['after']);
}
$colList[] = $alter;
}
break;
case 'drop':
foreach($column as $field => $col) {
$col['name'] = $field;
$colList[] = 'DROP '.$this->name($field);
}
break;
case 'change':
foreach($column as $field => $col) {
if (!isset($col['name'])) {
$col['name'] = $field;
}
$colList[] = 'CHANGE '. $this->name($field).' '.$this->buildColumn($col);
}
break;
}
}
$out .= "\t" . implode(",\n\t", $colList) . ";\n\n";
}
}
return $out;
}

/**
* This method should quote Oracle identifiers. Well it doesn't.
* It would break all scaffolding and all of Cake's default assumptions.
*
* @param unknown_type $var
* @return unknown
* @access public
*/
function name($name) {
if (strpos($name, '.') !== false && strpos($name, '"') === false) {
list($model, $field) = explode('.', $name);
if ($field[0] == "_") {
$name = "$model.\"$field\"";
}
} else {
if ($name[0] == "_") {
$name = "\"$name\"";
}
}
return $name;
}

/**
* Begin a transaction
*
* @param unknown_type $model
* @return boolean True on success, false on fail
* (i.e. if the database/model does not support transactions).
*/
function begin() {
$this->__transactionStarted = true;
return true;
}

/**
* Rollback a transaction
*
* @param unknown_type $model
* @return boolean True on success, false on fail
* (i.e. if the database/model does not support transactions,
* or a transaction has not started).
*/
function rollback() {
return ocirollback($this->connection);
}

/**
* Commit a transaction
*
* @param unknown_type $model
* @return boolean True on success, false on fail
* (i.e. if the database/model does not support transactions,
* or a transaction has not started).
*/
function commit() {
$this->__transactionStarted = false;
return ocicommit($this->connection);
}

/**
* Converts database-layer column types to basic types
*
* @param string $real Real database-layer column type (i.e. "varchar(255)")
* @return string Abstract column type (i.e. "string")
* @access public
*/
function column($real) {
if (is_array($real)) {
$col = $real['name'];

if (isset($real['limit'])) {
$col .= '('.$real['limit'].')';
}
return $col;
} else {
$real = strtolower($real);
}
$col = str_replace(')', '', $real);
$limit = null;
if (strpos($col, '(') !== false) {
list($col, $limit) = explode('(', $col);
}

if (in_array($col, array('date', 'timestamp'))) {
return $col;
}
if (strpos($col, 'number') !== false) {
return 'integer';
}
if (strpos($col, 'integer') !== false) {
return 'integer';
}
if (strpos($col, 'char') !== false) {
return 'string';
}
if (strpos($col, 'text') !== false) {
return 'text';
}
if (strpos($col, 'blob') !== false) {
return 'binary';
}
if (in_array($col, array('float', 'double', 'decimal'))) {
return 'float';
}
if ($col == 'boolean') {
return $col;
}
return 'text';
}

/**
* Returns a quoted and escaped string of $data for use in an SQL statement.
*
* @param string $data String to be prepared for use in an SQL statement
* @return string Quoted and escaped
* @access public
*/
function value($data, $column = null, $safe = false) {
$parent = parent::value($data, $column, $safe);

if ($parent != null) {
return $parent;
}

if ($data === null) {
return 'NULL';
}

if ($data === '') {
return "''";
}

switch($column) {
case 'date':
$data = date('Y-m-d H:i:s', strtotime($data));
$data = "TO_DATE('$data', 'YYYY-MM-DD HH24:MI:SS')";
break;
case 'integer' :
case 'float' :
case null :
if (is_numeric($data)) {
break;
}
default:
$data = str_replace("'", "''", $data);
$data = "'$data'";
break;
}
return $data;
}

/**
* Returns the ID generated from the previous INSERT operation.
*
* @param string
* @return integer
* @access public
*/
function lastInsertId($source) {
$sequence = $this->_sequenceMap[$source];
$sql = "SELECT $sequence.currval FROM dual";

if (!$this->execute($sql)) {
return false;
}

while($row = $this->fetchRow()) {
return $row[$sequence]['currval'];
}
return false;
}

/**
* Returns a formatted error message from previous database operation.
*
* @return string Error message with error number
* @access public
*/
function lastError() {
return $this->_error;
}

/**
* Returns number of affected rows in previous database operation. If no previous operation exists, this returns false.
*
* @return int Number of affected rows
* @access public
*/
function lastAffected() {
return $this->_statementId ? ocirowcount($this->_statementId): false;
}

/**
* Renders a final SQL statement by putting together the component parts in the correct order
*
* @param string $type
* @param array $data
* @return string
*/
function renderStatement($type, $data) {
extract($data);
$aliases = null;

switch (strtolower($type)) {
case 'select':
return "SELECT {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$group} {$order} {$limit}";
break;
case 'create':
return "INSERT INTO {$table} ({$fields}) VALUES ({$values})";
break;
case 'update':
if (!empty($alias)) {
$aliases = "{$this->alias}{$alias} ";
}
return "UPDATE {$table} {$aliases}SET {$fields} {$conditions}";
break;
case 'delete':
if (!empty($alias)) {
$aliases = "{$this->alias}{$alias} ";
}
return "DELETE FROM {$table} {$aliases}{$conditions}";
break;
case 'schema':
foreach (array('columns', 'indexes') as $var) {
if (is_array(${$var})) {
${$var} = "\t" . implode(",\n\t", array_filter(${$var}));
}
}
if (trim($indexes) != '') {
$columns .= ',';
}
return "CREATE TABLE {$table} (\n{$columns}{$indexes})";
break;
case 'alter':
break;
}
}

/**
* Enter description here...
*
* @param Model $model
* @param unknown_type $linkModel
* @param string $type Association type
* @param unknown_type $association
* @param unknown_type $assocData
* @param unknown_type $queryData
* @param unknown_type $external
* @param unknown_type $resultSet
* @param integer $recursive Number of levels of association
* @param array $stack
*/
function queryAssociation(&$model, &$linkModel, $type, $association, $assocData, &$queryData, $external = false, &$resultSet, $recursive, $stack) {
if ($query = $this->generateAssociationQuery($model, $linkModel, $type, $association, $assocData, $queryData, $external, $resultSet)) {
if (!isset($resultSet) || !is_array($resultSet)) {
if (Configure::read() > 0) {
echo '

' . sprintf(__('SQL Error in model %s:', true), $model->alias) . ' ';
if (isset($this->error) && $this->error != null) {
echo $this->error;
}
echo '

';
}
return null;
}
$count = count($resultSet);

if ($type === 'hasMany' && (!isset($assocData['limit']) || empty($assocData['limit']))) {
$ins = $fetch = array();
for ($i = 0; $i < $count; $i++) {
if ($in = $this->insertQueryData('{$__cakeID__$}', $resultSet[$i], $association, $assocData, $model, $linkModel, $stack)) {
$ins[] = $in;
}
}

if (!empty($ins)) {
$fetch = array();
$ins = array_chunk($ins, 1000);
foreach ($ins as $i) {
$q = str_replace('{$__cakeID__$}', implode(', ', $i), $query);
$q = str_replace('= (', 'IN (', $q);
$res = $this->fetchAll($q, $model->cacheQueries, $model->alias);
$fetch = array_merge($fetch, $res);
}
}

if (!empty($fetch) && is_array($fetch)) {
if ($recursive > 0) {

foreach ($linkModel->__associations as $type1) {
foreach ($linkModel->{$type1} as $assoc1 => $assocData1) {
$deepModel =& $linkModel->{$assoc1};
$tmpStack = $stack;
$tmpStack[] = $assoc1;

if ($linkModel->useDbConfig === $deepModel->useDbConfig) {
$db =& $this;
} else {
$db =& ConnectionManager::getDataSource($deepModel->useDbConfig);
}
$db->queryAssociation($linkModel, $deepModel, $type1, $assoc1, $assocData1, $queryData, true, $fetch, $recursive - 1, $tmpStack);
}
}
}
}
return $this->__mergeHasMany($resultSet, $fetch, $association, $model, $linkModel, $recursive);
} elseif ($type === 'hasAndBelongsToMany') {
$ins = $fetch = array();
for ($i = 0; $i < $count; $i++) {
if ($in = $this->insertQueryData('{$__cakeID__$}', $resultSet[$i], $association, $assocData, $model, $linkModel, $stack)) {
$ins[] = $in;
}
}

$foreignKey = $model->hasAndBelongsToMany[$association]['foreignKey'];
$joinKeys = array($foreignKey, $model->hasAndBelongsToMany[$association]['associationForeignKey']);
list($with, $habtmFields) = $model->joinModel($model->hasAndBelongsToMany[$association]['with'], $joinKeys);
$habtmFieldsCount = count($habtmFields);

if (!empty($ins)) {
$fetch = array();
$ins = array_chunk($ins, 1000);
foreach ($ins as $i) {
$q = str_replace('{$__cakeID__$}', '(' .implode(', ', $i) .')', $query);
$q = str_replace('= (', 'IN (', $q);
$q = str_replace(' WHERE 1 = 1', '', $q);

$q = $this->insertQueryData($q, null, $association, $assocData, $model, $linkModel, $stack);
if ($q != false) {
$res = $this->fetchAll($q, $model->cacheQueries, $model->alias);
$fetch = array_merge($fetch, $res);
}
}
}
}

for ($i = 0; $i < $count; $i++) {
$row =& $resultSet[$i];

if ($type !== 'hasAndBelongsToMany') {
$q = $this->insertQueryData($query, $resultSet[$i], $association, $assocData, $model, $linkModel, $stack);
if ($q != false) {
$fetch = $this->fetchAll($q, $model->cacheQueries, $model->alias);
} else {
$fetch = null;
}
}

if (!empty($fetch) && is_array($fetch)) {
if ($recursive > 0) {

foreach ($linkModel->__associations as $type1) {
foreach ($linkModel->{$type1} as $assoc1 => $assocData1) {

$deepModel =& $linkModel->{$assoc1};
if (($type1 === 'belongsTo') || ($deepModel->alias === $model->alias && $type === 'belongsTo') || ($deepModel->alias != $model->alias)) {
$tmpStack = $stack;
$tmpStack[] = $assoc1;
if ($linkModel->useDbConfig == $deepModel->useDbConfig) {
$db =& $this;
} else {
$db =& ConnectionManager::getDataSource($deepModel->useDbConfig);
}
$db->queryAssociation($linkModel, $deepModel, $type1, $assoc1, $assocData1, $queryData, true, $fetch, $recursive - 1, $tmpStack);
}
}
}
}
if ($type == 'hasAndBelongsToMany') {
$merge = array();
foreach($fetch as $j => $data) {
if (isset($data[$with]) && $data[$with][$foreignKey] === $row[$model->alias][$model->primaryKey]) {
if ($habtmFieldsCount > 2) {
$merge[] = $data;
} else {
$merge[] = Set::diff($data, array($with => $data[$with]));
}
}
}
if (empty($merge) && !isset($row[$association])) {
$row[$association] = $merge;
} else {
$this->__mergeAssociation($resultSet[$i], $merge, $association, $type);
}
} else {
$this->__mergeAssociation($resultSet[$i], $fetch, $association, $type);
}
$resultSet[$i][$association] = $linkModel->afterfind($resultSet[$i][$association]);

} else {
$tempArray[0][$association] = false;
$this->__mergeAssociation($resultSet[$i], $tempArray, $association, $type);
}
}
}
}

/**
* Generate a "drop table" statement for the given Schema object
*
* @param object $schema An instance of a subclass of CakeSchema
* @param string $table Optional. If specified only the table name given will be generated.
* Otherwise, all tables defined in the schema are generated.
* @return string
*/
function dropSchema($schema, $table = null) {
if (!is_a($schema, 'CakeSchema')) {
trigger_error(__('Invalid schema object', true), E_USER_WARNING);
return null;
}
$out = '';

foreach ($schema->tables as $curTable => $columns) {
if (!$table || $table == $curTable) {
$out .= 'DROP TABLE ' . $this->fullTableName($curTable) . "\n";
}
}
return $out;
}
}

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Oracle Datasource CakePHP 2.0