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<?php |
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/* |
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* The MIT License |
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* |
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* Copyright 2014 ekow. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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*/ |
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namespace ntentan\atiaa\descriptors; |
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/** |
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* An abstract descriptor for DBs which use the information_schema tables. |
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* Database systems which implement the ANSI information_schema standard can |
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* extend this descriptor. |
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*/ |
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abstract class InformationSchemaDescriptor extends \ntentan\atiaa\Descriptor |
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{ |
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protected function getColumns(&$table) |
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{ |
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return $this->driver->quotedQuery( |
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'select |
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"column_name" as "name", |
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"data_type" as "type", |
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"is_nullable" as "nulls", |
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"column_default" as "default", |
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"character_maximum_length" as "length" |
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from "information_schema"."columns" |
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where "table_name" = ? and "table_schema"=? |
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order by "column_name"', |
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array( |
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$table['name'], |
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$table['schema'] |
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) |
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); |
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} |
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protected function getTables($schema, $tables, $includeViews) |
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{ |
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View Code Duplication |
if($includeViews) |
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{ |
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$condition = "(table_type = ? or table_type = ?)"; |
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$bind = array('BASE TABLE', 'VIEW'); |
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} |
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else |
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{ |
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$condition = "table_type = ?"; |
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$bind = array('BASE TABLE'); |
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} |
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if(count($tables) > 0) |
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{ |
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return $this->driver->quotedQuery( |
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'select "table_schema" as "schema", "table_name" as "name" |
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from "information_schema"."tables" |
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where ' . $condition . ' and table_schema = ? |
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and table_name in (?' . str_repeat(', ?', count($tables) - 1) . ') |
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order by "table_name"', |
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array_merge($bind, array($schema), $tables) |
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); |
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} |
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else |
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{ |
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return $this->driver->quotedQuery( |
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'select "table_schema" as "schema", "table_name" as "name" |
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from "information_schema"."tables" |
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where ' . $condition . ' and table_schema = ? order by "table_name"', |
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array_merge($bind, array($schema)) |
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); |
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} |
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} |
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protected function getPrimaryKey(&$table) |
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{ |
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return $this->getConstraints($table, 'PRIMARY KEY'); |
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} |
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protected function getUniqueKeys(&$table) |
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{ |
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return $this->getConstraints($table, 'UNIQUE'); |
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} |
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/** |
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* @param string $type |
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*/ |
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private function getConstraints($table, $type) |
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{ |
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return $this->driver->quotedQuery( |
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'select "column_name" as "column", "pk"."constraint_name" as "name" |
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from "information_schema"."table_constraints" "pk" |
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join "information_schema"."key_column_usage" "c" on |
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"c"."table_name" = "pk"."table_name" and |
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"c"."constraint_name" = "pk"."constraint_name" and |
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"c"."constraint_schema" = "pk"."table_schema" |
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where "pk"."table_name" = ? and pk.table_schema= ? |
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and constraint_type = ? order by "pk"."constraint_name", "column_name"', |
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array($table['name'], $table['schema'], $type) |
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); |
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} |
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protected function getViews(&$schema) |
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{ |
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return $this->driver->quotedQuery( |
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'select "table_schema" as "schema", "table_name" as "name", "view_definition" as "definition" |
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from "information_schema"."views" |
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where "table_schema" = ? order by "table_name"', |
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array($schema) |
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); |
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} |
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} |
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ntentan /
atiaa
Our type inference engine in quite powerful, but sometimes the code does not provide enough clues to go by. In these cases we request you to add a
@returnannotation as described here.