Commit 7eabab06 by Qiang Xue

Merge pull request #1406 from p0larbeer/master

DB Schema OCI
parents e2b4708b d30aa3ef
<?php
namespace yii\db\oci;
class ColumnSchema extends \yii\db\ColumnSchema
{
/**
* Initializes the column with its DB type and default value.
* This sets up the column's PHP type, size, precision, scale as well as default value.
*
* @param string $dbType
* the column's DB type
* @param mixed $defaultValue
* the default value
*/
public function extract($dbType, $defaultValue)
{
$this->dbType = $dbType;
$this->extractType($dbType);
$this->extractLimit($dbType);
if ($defaultValue !== null)
$this->extractDefault($defaultValue);
}
/**
* Extracts the PHP type from DB type.
*
* @param string $dbType
* DB type
* @return string
*/
protected function extractOraType($dbType)
{
if (strpos($dbType, 'FLOAT') !== false)
return 'double';
if (strpos($dbType, 'NUMBER') !== false || strpos($dbType, 'INTEGER') !== false) {
if (strpos($dbType, '(') && preg_match('/\((.*)\)/', $dbType, $matches)) {
$values = explode(',', $matches[1]);
if (isset($values[1]) and (((int) $values[1]) > 0))
return 'double';
else
return 'integer';
} else
return 'double';
} else
return 'string';
}
/**
* Extracts the PHP type from DB type.
*
* @param string $dbType
* DB type
*/
protected function extractType($dbType)
{
$this->type = $this->extractOraType($dbType);
}
/**
* Extracts size, precision and scale information from column's DB type.
*
* @param string $dbType
* the column's DB type
*/
protected function extractLimit($dbType)
{
if (strpos($dbType, '(') && preg_match('/\((.*)\)/', $dbType, $matches)) {
$values = explode(',', $matches[1]);
$this->size = $this->precision = (int) $values[0];
if (isset($values[1]))
$this->scale = (int) $values[1];
}
}
/**
* Extracts the default value for the column.
* The value is typecasted to correct PHP type.
*
* @param mixed $defaultValue
* the default value obtained from metadata
*/
protected function extractDefault($defaultValue)
{
if (stripos($defaultValue, 'timestamp') !== false) {
$this->defaultValue = null;
} else {
$this->defaultValue = $this->typecast($defaultValue);
}
}
}
<?php
namespace yii\db\oci;
use yii\db\Exception;
use yii\base\InvalidParamException;
/**
* QueryBuilder is the query builder for Oracle databases.
*
*/
class QueryBuilder extends \yii\db\QueryBuilder
{
private $sql;
public function build($query)
{
// var_dump($query);exit;
$params = $query->params;
$clauses = [
$this->buildSelect ( $query->select, $query->distinct, $query->selectOption ),
$this->buildFrom ( $query->from ),
$this->buildJoin ( $query->join, $params ),
$this->buildWhere ( $query->where, $params ),
$this->buildGroupBy ( $query->groupBy ),
$this->buildHaving ( $query->having, $params ),
$this->buildUnion ( $query->union, $params ),
$this->buildOrderBy ( $query->orderBy )
// $this->buildLimit($query->limit, $query->offset),
;
// var_dump( [implode($this->separator, array_filter($clauses)), $params]);exit;
$this->sql = implode($this->separator, array_filter($clauses));
if (! is_null($query->limit) && ! is_null($query->offset)) {
$this->sql = $this->buildLimit($query->limit, $query->offset);
}
return [
$this->sql,
$params
];
// return [implode($this->separator, array_filter($clauses)), $params];
}
public function buildLimit($limit, $offset)
{
// var_dump($limit >= 0);
// var_dump($offset);exit;
// var_dump($limit, $offset);
if (($limit < 0) && ($offset < 0)) {
return $this->sql;
}
$filters = array();
if ($offset > 0) {
$filters[] = 'rowNumId > ' . (int) $offset;
}
if ($limit >= 0) {
$filters[] = 'rownum <= ' . (int) $limit;
}
if (count($filters) > 0) {
$filter = implode(' and ', $filters);
$filter = " WHERE " . $filter;
} else {
$filter = '';
}
$sql = <<<EOD
WITH USER_SQL AS ({$this->sql}),
PAGINATION AS (SELECT USER_SQL.*, rownum as rowNumId FROM USER_SQL)
SELECT *
FROM PAGINATION
{$filter}
EOD;
return $sql;
}
}
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