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-rwxr-xr-xframework/Db/Schema/pgsql/TPgsqlColumnSchema.php58
-rwxr-xr-xframework/Db/Schema/pgsql/TPgsqlSchema.php284
-rwxr-xr-xframework/Db/Schema/pgsql/TPgsqlTableSchema.php27
3 files changed, 369 insertions, 0 deletions
diff --git a/framework/Db/Schema/pgsql/TPgsqlColumnSchema.php b/framework/Db/Schema/pgsql/TPgsqlColumnSchema.php
new file mode 100755
index 00000000..3677cd44
--- /dev/null
+++ b/framework/Db/Schema/pgsql/TPgsqlColumnSchema.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * TPgsqlColumnSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.Schema.TDbColumnSchema');
+
+/**
+ * TPgsqlColumnSchema class describes the column meta data of a PostgreSQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: TPgsqlColumnSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package System.Db.Schema.pgsql
+ * @since 1.0
+ */
+class TPgsqlColumnSchema extends TDbColumnSchema
+{
+ /**
+ * Extracts the PHP type from DB type.
+ * @param string DB type
+ */
+ protected function extractType($dbType)
+ {
+ if(strpos($dbType,'integer')!==false || strpos($dbType,'oid')===0)
+ $this->type='integer';
+ else if(strpos($dbType,'bool')!==false)
+ $this->type='boolean';
+ else if(preg_match('/(real|float|double)/',$dbType))
+ $this->type='double';
+ else
+ $this->type='string';
+ }
+
+ /**
+ * Extracts the default value for the column.
+ * The value is typecasted to correct PHP type.
+ * @param mixed the default value obtained from metadata
+ */
+ protected function extractDefault($defaultValue)
+ {
+ if($defaultValue==='true')
+ $this->defaultValue=true;
+ else if($defaultValue==='false')
+ $this->defaultValue=false;
+ else if(strpos($defaultValue,'nextval')===0)
+ $this->defaultValue=null;
+ else if(preg_match('/\'(.*)\'::/',$defaultValue,$matches))
+ $this->defaultValue=$this->typecast(str_replace("''","'",$matches[1]));
+ else if(preg_match('/^-?\d+(\.\d*)?$/',$defaultValue,$matches))
+ $this->defaultValue=$this->typecast($defaultValue);
+ // else is null
+ }
+}
diff --git a/framework/Db/Schema/pgsql/TPgsqlSchema.php b/framework/Db/Schema/pgsql/TPgsqlSchema.php
new file mode 100755
index 00000000..5f009208
--- /dev/null
+++ b/framework/Db/Schema/pgsql/TPgsqlSchema.php
@@ -0,0 +1,284 @@
+<?php
+/**
+ * TPgsqlSchema class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.Schema.TDbSchema');
+
+/**
+ * TPgsqlSchema is the class for retrieving metadata information from a PostgreSQL database.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: TPgsqlSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package System.Db.Schema.pgsql
+ * @since 1.0
+ */
+class TPgsqlSchema extends TDbSchema
+{
+ const DEFAULT_SCHEMA='public';
+ private $_sequences=array();
+
+ /**
+ * Quotes a table name for use in a query.
+ * @param string table name
+ * @return string the properly quoted table name
+ */
+ public function quoteTableName($name)
+ {
+ return '"'.$name.'"';
+ }
+
+ /**
+ * Creates a table instance representing the metadata for the named table.
+ * @return TDbTableSchema driver dependent table metadata.
+ */
+ protected function createTable($name)
+ {
+ $table=new TPgsqlTableSchema;
+ $this->resolveTableNames($table,$name);
+ if(!$this->findColumns($table))
+ return null;
+ $this->findConstraints($table);
+
+ if(is_string($table->primaryKey) && isset($this->_sequences[$table->primaryKey]))
+ $table->sequenceName=$this->_sequences[$table->primaryKey];
+
+ return $table;
+ }
+
+ /**
+ * Generates various kinds of table names.
+ * @param TPgsqlTableSchema the table instance
+ * @param string the unquoted table name
+ */
+ protected function resolveTableNames($table,$name)
+ {
+ $parts=explode('.',str_replace('"','',$name));
+ if(isset($parts[1]))
+ {
+ $schemaName=$parts[0];
+ $tableName=$parts[1];
+ }
+ else
+ {
+ $schemaName=self::DEFAULT_SCHEMA;
+ $tableName=$parts[0];
+ }
+
+ $table->name=$tableName;
+ $table->schemaName=$schemaName;
+ if($schemaName===self::DEFAULT_SCHEMA)
+ $table->rawName=$this->quoteTableName($tableName);
+ else
+ $table->rawName=$this->quoteTableName($schemaName).'.'.$this->quoteTableName($tableName);
+ }
+
+ /**
+ * Collects the table column metadata.
+ * @param TPgsqlTableSchema the table metadata
+ * @return boolean whether the table exists in the database
+ */
+ protected function findColumns($table)
+ {
+ $sql=<<<EOD
+SELECT a.attname, LOWER(format_type(a.atttypid, a.atttypmod)) AS type, d.adsrc, a.attnotnull, a.atthasdef
+FROM pg_attribute a LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum
+WHERE a.attnum > 0 AND NOT a.attisdropped
+ AND a.attrelid = (SELECT oid FROM pg_catalog.pg_class WHERE relname=:table
+ AND relnamespace = (SELECT oid FROM pg_catalog.pg_namespace WHERE nspname = :schema))
+ORDER BY a.attnum
+EOD;
+ $command=$this->getDbConnection()->createCommand($sql);
+ $command->bindValue(':table',$table->name);
+ $command->bindValue(':schema',$table->schemaName);
+
+ if(($columns=$command->queryAll())===array())
+ return false;
+
+ foreach($columns as $column)
+ {
+ $c=$this->createColumn($column);
+ $table->columns[$c->name]=$c;
+
+ if(stripos($column['adsrc'],'nextval')===0 && preg_match('/nextval\([^\']*\'([^\']+)\'[^\)]*\)/i',$column['adsrc'],$matches))
+ {
+ if(strpos($matches[1],'.')!==false || $table->schemaName===self::DEFAULT_SCHEMA)
+ $this->_sequences[$c->name]=$matches[1];
+ else
+ $this->_sequences[$c->name]=$table->schemaName.'.'.$matches[1];
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Creates a table column.
+ * @param array column metadata
+ * @return TDbColumnSchema normalized column metadata
+ */
+ protected function createColumn($column)
+ {
+ $c=new TPgsqlColumnSchema;
+ $c->name=$column['attname'];
+ $c->rawName=$this->quoteColumnName($c->name);
+ $c->allowNull=!$column['attnotnull'];
+ $c->isPrimaryKey=false;
+ $c->isForeignKey=false;
+
+ $c->init($column['type'],$column['atthasdef'] ? $column['adsrc'] : null);
+
+ return $c;
+ }
+
+ /**
+ * Collects the primary and foreign key column details for the given table.
+ * @param TPgsqlTableSchema the table metadata
+ */
+ protected function findConstraints($table)
+ {
+ $sql=<<<EOD
+SELECT conname, consrc, contype, indkey FROM (
+ SELECT
+ conname,
+ CASE WHEN contype='f' THEN
+ pg_catalog.pg_get_constraintdef(oid)
+ ELSE
+ 'CHECK (' || consrc || ')'
+ END AS consrc,
+ contype,
+ conrelid AS relid,
+ NULL AS indkey
+ FROM
+ pg_catalog.pg_constraint
+ WHERE
+ contype IN ('f', 'c')
+ UNION ALL
+ SELECT
+ pc.relname,
+ NULL,
+ CASE WHEN indisprimary THEN
+ 'p'
+ ELSE
+ 'u'
+ END,
+ pi.indrelid,
+ indkey
+ FROM
+ pg_catalog.pg_class pc,
+ pg_catalog.pg_index pi
+ WHERE
+ pc.oid=pi.indexrelid
+ AND EXISTS (
+ SELECT 1 FROM pg_catalog.pg_depend d JOIN pg_catalog.pg_constraint c
+ ON (d.refclassid = c.tableoid AND d.refobjid = c.oid)
+ WHERE d.classid = pc.tableoid AND d.objid = pc.oid AND d.deptype = 'i' AND c.contype IN ('u', 'p')
+ )
+) AS sub
+WHERE relid = (SELECT oid FROM pg_catalog.pg_class WHERE relname=:table
+ AND relnamespace = (SELECT oid FROM pg_catalog.pg_namespace
+ WHERE nspname=:schema))
+EOD;
+ $command=$this->getDbConnection()->createCommand($sql);
+ $command->bindValue(':table',$table->name);
+ $command->bindValue(':schema',$table->schemaName);
+ foreach($command->queryAll() as $row)
+ {
+ if($row['contype']==='p') // primary key
+ $this->findPrimaryKey($table,$row['indkey']);
+ else if($row['contype']==='f') // foreign key
+ $this->findForeignKey($table,$row['consrc']);
+ }
+ }
+
+ /**
+ * Collects primary key information.
+ * @param TPgsqlTableSchema the table metadata
+ * @param string pgsql primary key index list
+ */
+ protected function findPrimaryKey($table,$indices)
+ {
+ $indices=implode(', ',preg_split('/\s+/',$indices));
+ $sql=<<<EOD
+SELECT attnum, attname FROM pg_catalog.pg_attribute WHERE
+ attrelid=(
+ SELECT oid FROM pg_catalog.pg_class WHERE relname=:table AND relnamespace=(
+ SELECT oid FROM pg_catalog.pg_namespace WHERE nspname=:schema
+ )
+ )
+ AND attnum IN ({$indices})
+EOD;
+ $command=$this->getDbConnection()->createCommand($sql);
+ $command->bindValue(':table',$table->name);
+ $command->bindValue(':schema',$table->schemaName);
+ foreach($command->queryAll() as $row)
+ {
+ $name=$row['attname'];
+ if(isset($table->columns[$name]))
+ {
+ $table->columns[$name]->isPrimaryKey=true;
+ if($table->primaryKey===null)
+ $table->primaryKey=$name;
+ else if(is_string($table->primaryKey))
+ $table->primaryKey=array($table->primaryKey,$name);
+ else
+ $table->primaryKey[]=$name;
+ }
+ }
+ }
+
+ /**
+ * Collects foreign key information.
+ * @param TPgsqlTableSchema the table metadata
+ * @param string pgsql foreign key definition
+ */
+ protected function findForeignKey($table,$src)
+ {
+ $matches=array();
+ $brackets='\(([^\)]+)\)';
+ $pattern="/FOREIGN\s+KEY\s+{$brackets}\s+REFERENCES\s+([^\(]+){$brackets}/i";
+ if(preg_match($pattern,str_replace('"','',$src),$matches))
+ {
+ $keys=preg_split('/,\s+/', $matches[1]);
+ $tableName=$matches[2];
+ $fkeys=preg_split('/,\s+/', $matches[3]);
+ foreach($keys as $i=>$key)
+ {
+ $table->foreignKeys[$key]=array($tableName,$fkeys[$i]);
+ if(isset($table->columns[$key]))
+ $table->columns[$key]->isForeignKey=true;
+ }
+ }
+ }
+
+ /**
+ * Returns all table names in the database.
+ * @return array all table names in the database.
+ * @since 1.0.2
+ */
+ protected function findTableNames($schema='')
+ {
+ if($schema==='')
+ $schema=self::DEFAULT_SCHEMA;
+ $sql=<<<EOD
+SELECT table_name, table_schema FROM information_schema.tables
+WHERE table_schema=:schema
+EOD;
+ $command=$this->getDbConnection()->createCommand($sql);
+ $command->bindParam(':schema',$schema);
+ $rows=$command->queryAll();
+ $names=array();
+ foreach($rows as $row)
+ {
+ if($schema===self::DEFAULT_SCHEMA)
+ $names[]=$row['table_name'];
+ else
+ $names[]=$row['schema_name'].'.'.$row['table_name'];
+ }
+ return $names;
+ }
+}
diff --git a/framework/Db/Schema/pgsql/TPgsqlTableSchema.php b/framework/Db/Schema/pgsql/TPgsqlTableSchema.php
new file mode 100755
index 00000000..9c14da28
--- /dev/null
+++ b/framework/Db/Schema/pgsql/TPgsqlTableSchema.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * TPgsqlTable class file.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright &copy; 2008-2009 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+prado::using('System.Db.Schema.TDbTableSchema');
+
+/**
+ * TPgsqlTable represents the metadata for a PostgreSQL table.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Id: TPgsqlTableSchema.php 2679 2009-06-15 07:49:42Z Christophe.Boulain $
+ * @package System.Db.Schema.pgsql
+ * @since 1.0
+ */
+class TPgsqlTableSchema extends TDbTableSchema
+{
+ /**
+ * @var string name of the schema that this table belongs to.
+ */
+ public $schemaName;
+}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-01 11:06:50 +0000