Error202
/
yii2-bootstrap
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

Merge pull request #1406 from p0larbeer/master 

DB Schema OCI
tags/2.0.0-beta
Qiang Xue 11 years ago
parent
e2b4708bbd d30aa3efef
commit
7eabab0629
3 changed files with 534 additions and 0 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 92
      framework/yii/db/oci/ColumnSchema.php
  2. 78
      framework/yii/db/oci/QueryBuilder.php
  3. 364
      framework/yii/db/oci/Schema.php

92
framework/yii/db/oci/ColumnSchema.php
Unescape View File

@ -0,0 +1,92 @@
<?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);
}
}
}

78
framework/yii/db/oci/QueryBuilder.php
Unescape View File

@ -0,0 +1,78 @@
<?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;
}
}

364
framework/yii/db/oci/Schema.php
Unescape View File

@ -0,0 +1,364 @@
<?php
namespace yii\db\oci;
use yii\db\TableSchema;
use yii\db\oci\ColumnSchema;
/**
* Schema is the class for retrieving metadata information from an Oracle database.
*
*/
class Schema extends \yii\db\Schema
{
private $_defaultSchema = '';
public function createQueryBuilder()
{
return new QueryBuilder($this->db);
}
public function quoteTableName($name)
{
if (strpos($name, '.') === false) {
return $this->quoteSimpleTableName($name);
}
$parts = explode('.', $name);
foreach ($parts as $i => $part) {
$parts[$i] = $this->quoteSimpleTableName($part);
}
return implode('.', $parts);
}
public function quoteSimpleTableName($name)
{
return '"' . $name . '"';
// return $name;
}
public function quoteColumnName($name)
{
if (($pos = strrpos($name, '.')) !== false) {
$prefix = $this->quoteTableName(substr($name, 0, $pos)) . '.';
$name = substr($name, $pos + 1);
} else {
$prefix = '';
}
return $prefix . ($name === '*' ? $name : $this->quoteSimpleColumnName($name));
}
public function quoteSimpleColumnName($name)
{
return '"' . $name . '"';
// return $name;
}
public function loadTableSchema($name)
{
$table = new TableSchema();
$this->resolveTableNames($table, $name);
// $this->findPrimaryKeys($table);
if ($this->findColumns($table)) {
// $this->findForeignKeys($table);
$this->findConstraints($table);
return $table;
}
}
/**
* Resolves the table name and schema name (if any).
*
* @param TableSchema $table
* the table metadata object
* @param string $name
* the table name
*/
protected function resolveTableNames($table, $name)
{
$parts = explode('.', str_replace('"', '', $name));
if (isset($parts[1])) {
$table->schemaName = $parts[0];
$table->name = $parts[1];
} else {
$table->name = $parts[0];
}
if ($table->schemaName === null) {
$table->schemaName = $this->getDefaultSchema();
}
}
/**
*
* @return string default schema.
*/
public function getDefaultSchema()
{
if (! strlen($this->_defaultSchema)) {
$this->setDefaultSchema(strtoupper($this->db->username));
}
return $this->_defaultSchema;
}
/**
*
* @param string $schema
* default schema.
*/
public function setDefaultSchema($schema)
{
$this->_defaultSchema = $schema;
}
public function getLastInsertID($sequenceName = '')
{
if ($this->db->isActive) {
$sql = "select {$sequenceName}.currval from dual";
return $this->db->createCommand($sql)->queryScalar();
} else {
throw new InvalidCallException('DB Connection is not active.');
}
}
/**
* Collects the table column metadata.
*
*/
protected function findColumns($table)
{
$schemaName = $table->schemaName;
$tableName = $table->name;
$sql = <<<EOD
SELECT a.column_name, a.data_type ||
case
when data_precision is not null
then '(' || a.data_precision ||
case when a.data_scale > 0 then ',' || a.data_scale else '' end
|| ')'
when data_type = 'DATE' then ''
when data_type = 'NUMBER' then ''
else '(' || to_char(a.data_length) || ')'
end as data_type,
a.nullable, a.data_default,
( SELECT D.constraint_type
FROM ALL_CONS_COLUMNS C
inner join ALL_constraints D on D.OWNER = C.OWNER and D.constraint_name = C.constraint_name
WHERE C.OWNER = B.OWNER
and C.table_name = B.object_name
and C.column_name = A.column_name
and D.constraint_type = 'P') as Key,
com.comments as column_comment
FROM ALL_TAB_COLUMNS A
inner join ALL_OBJECTS B ON b.owner = a.owner and ltrim(B.OBJECT_NAME) = ltrim(A.TABLE_NAME)
LEFT JOIN user_col_comments com ON (A.table_name = com.table_name AND A.column_name = com.column_name)
WHERE
a.owner = '{$schemaName}'
and (b.object_type = 'TABLE' or b.object_type = 'VIEW')
and b.object_name = '{$tableName}'
ORDER by a.column_id
EOD;
try {
$columns = $this->db->createCommand($sql)->queryAll();
} catch (\Exception $e) {
return false;
}
foreach ($columns as $column) {
$c = $this->createColumn($column);
$table->columns[$c->name] = $c;
if ($c->isPrimaryKey) {
if ($table->primaryKey === null) {
$table->primaryKey = $c->name;
} elseif (is_string($table->primaryKey)) {
$table->primaryKey = array(
$table->primaryKey,
$c->name
);
} else {
$table->primaryKey[] = $c->name;
}
$sql = "select sequence_name
from user_tables tabs
join user_triggers trigs
on trigs.table_name = tabs.table_name
join user_dependencies deps
on deps.name = trigs.trigger_name
join user_sequences seqs
on seqs.sequence_name = deps.referenced_name
where tabs.table_name = '{$tableName}'
and trigs.triggering_event = 'INSERT'";
try {
$seqName = $this->db->createCommand($sql)->queryScalar();
} catch (\Exception $e) {
return false;
}
$table->sequenceName = $seqName;
$c->autoIncrement = true;
}
}
return true;
}
protected function createColumn($column)
{
$c = new ColumnSchema();
$c->name = $column['COLUMN_NAME'];
$c->allowNull = $column['NULLABLE'] === 'Y';
$c->isPrimaryKey = strpos($column['KEY'], 'P') !== false;
$c->extract($column['DATA_TYPE'], $column['DATA_DEFAULT']);
$c->comment = $column['COLUMN_COMMENT'] === null ? '' : $column['COLUMN_COMMENT'];
return $c;
}
protected function findConstraints($table)
{
$sql = <<<EOD
SELECT D.constraint_type as CONSTRAINT_TYPE, C.COLUMN_NAME, C.position, D.r_constraint_name,
E.table_name as table_ref, f.column_name as column_ref,
C.table_name
FROM ALL_CONS_COLUMNS C
inner join ALL_constraints D on D.OWNER = C.OWNER and D.constraint_name = C.constraint_name
left join ALL_constraints E on E.OWNER = D.r_OWNER and E.constraint_name = D.r_constraint_name
left join ALL_cons_columns F on F.OWNER = E.OWNER and F.constraint_name = E.constraint_name and F.position = c.position
WHERE C.OWNER = '{$table->schemaName}'
and C.table_name = '{$table->name}'
and D.constraint_type <> 'P'
order by d.constraint_name, c.position
EOD;
$command = $this->db->createCommand($sql);
foreach ($command->queryAll() as $row) {
if ($row['CONSTRAINT_TYPE'] === 'R') { // foreign key
$name = $row["COLUMN_NAME"];
$table->foreignKeys[$name] = array(
$row["TABLE_REF"],
$row["COLUMN_REF"]
);
/*
* if (isset($table->columns[$name])) { $table->columns[$name]->isForeignKey = true; }
*/
}
}
}
/**
* Returns all table names in the database.
*
* @param string $schema
* the schema of the tables. Defaults to empty string, meaning the current or default schema.
* If not empty, the returned table names will be prefixed with the schema name.
* @return array all table names in the database.
*/
protected function findTableNames($schema = '')
{
if ($schema === '') {
$sql = <<<EOD
SELECT table_name, '{$schema}' as table_schema FROM user_tables
EOD;
$command = $this->db->createCommand($sql);
} else {
$sql = <<<EOD
SELECT object_name as table_name, owner as table_schema FROM all_objects
WHERE object_type = 'TABLE' AND owner=:schema
EOD;
$command = $this->db > createCommand($sql);
$command->bindParam(':schema', $schema);
}
$rows = $command->queryAll();
$names = array();
foreach ($rows as $row) {
if ($schema === $this->getDefaultSchema() || $schema === '') {
$names[] = $row['TABLE_NAME'];
} else {
$names[] = $row['TABLE_SCHEMA'] . '.' . $row['TABLE_NAME'];
}
}
return $names;
}
/**
* Builds a SQL statement for renaming a DB table.
*
* @param string $table
* the table to be renamed. The name will be properly quoted by the method.
* @param string $newName
* the new table name. The name will be properly quoted by the method.
* @return string the SQL statement for renaming a DB table.
* @since 1.1.6
*/
public function renameTable($table, $newName)
{
return 'ALTER TABLE ' . $this->quoteTableName($table) . ' RENAME TO ' . $this->quoteTableName($newName);
}
/**
* Builds a SQL statement for changing the definition of a column.
*
* @param string $table
* the table whose column is to be changed. The table name will be properly quoted by the method.
* @param string $column
* the name of the column to be changed. The name will be properly quoted by the method.
* @param string $type
* the new column type. The {@link getColumnType} method will be invoked to convert abstract column type (if any)
* into the physical one. Anything that is not recognized as abstract type will be kept in the generated SQL.
* For example, 'string' will be turned into 'varchar(255)', while 'string not null' will become 'varchar(255) not null'.
* @return string the SQL statement for changing the definition of a column.
* @since 1.1.6
*/
public function alterColumn($table, $column, $type)
{
$type = $this->getColumnType($type);
$sql = 'ALTER TABLE ' . $this->quoteTableName($table) . ' MODIFY ' . $this->quoteColumnName($column) . ' ' . $this->getColumnType($type);
return $sql;
}
/**
* Builds a SQL statement for dropping an index.
*
* @param string $name
* the name of the index to be dropped. The name will be properly quoted by the method.
* @param string $table
* the table whose index is to be dropped. The name will be properly quoted by the method.
* @return string the SQL statement for dropping an index.
* @since 1.1.6
*/
public function dropIndex($name, $table)
{
return 'DROP INDEX ' . $this->quoteTableName($name);
}
/**
* Resets the sequence value of a table's primary key.
* The sequence will be reset such that the primary key of the next new row inserted
* will have the specified value or 1.
*
* @param CDbTableSchema $table
* the table schema whose primary key sequence will be reset
* @param mixed $value
* the value for the primary key of the next new row inserted. If this is not set,
* the next new row's primary key will have a value 1.
* @since 1.1.13
*/
public function resetSequence($table, $value = 1)
{
$seq = $table->name . "_SEQ";
if ($table->sequenceName !== null) {
$this->db->createCommand("DROP SEQUENCE " . $seq)->execute();
$createSequenceSql = <<< SQL
create sequence $seq
start with $value
increment by 1
nomaxvalue
nocache
SQL;
$this->db->createCommand($createSequenceSql)->execute();
}
}
}
Write Preview
Loading…
Cancel
Save