Pgsql::dropTables() - Code Metrics - Inspection of "Improve PostgreSQL support" - spatie/laravel-migrate-fresh - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#22)

by Peter

created 2017-01-10 22:46 UTC

Pgsql::dropTables() A

↳ Parent: Pgsql

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	8
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	4
nc	2
nop	1

<?php

namespace Spatie\MigrateFresh\TableDroppers;

use DB;
use Illuminate\Support\Collection;

class Pgsql implements TableDropper
{
    public function dropAllTables()
    {
        $schema = $this->getSchema();

        $this->dropViews($this->getViews($schema));
        $this->dropTables($this->getTables($schema));
        $this->dropFunctions($this->getFunctions($schema));
        $this->dropSequences($this->getSequences($schema));
        $this->dropDomains($this->getDomains($schema));
        $this->dropCustomTypes($this->getCustomTypes($schema));
    }

    /**
     * Drop all custom types in the schema.
     *
     * @param \Illuminate\Support\Collection $types
     */
    public function dropCustomTypes($types)
    {
        DB::statement("DROP TYPE IF EXISTS {$types->implode(',')} CASCADE");
    }

    /**
     * Get a list of all custom types in the schema.
     *
     * @param $schema
     * @return \Illuminate\Support\Collection
     */
    public function getCustomTypes($schema)
    {
        // For some reason imformation_schema.user_defined_types doesn't return the types
        // See http://stackoverflow.com/questions/3660787/how-to-list-custom-types-using-postgres-information-schema/3703727#3703727
        $sql = <<<'SQL'
SELECT t.typname AS object_name 
  FROM pg_type t LEFT JOIN pg_catalog.pg_namespace n 
    ON n.oid = t.typnamespace 
 WHERE (t.typrelid = 0 OR (SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid)) 
   AND NOT EXISTS(SELECT 1 FROM pg_catalog.pg_type el WHERE el.oid = t.typelem AND el.typarray = t.oid)
   AND t.typtype NOT IN('d')
   AND n.nspname = ?
SQL;
        return $this->select($sql, $schema);
    }

    /**
     * Drop all domains in the schema.
     *
     * @param \Illuminate\Support\Collection $domains
     */
    public function dropDomains($domains)
    {
        DB::statement("DROP DOMAIN IF EXISTS {$domains->implode(',')} CASCADE");
    }

    /**
     * Get a list of all domains in the schema.
     *
     * @param $schema
     * @return \Illuminate\Support\Collection
     */
    public function getDomains($schema)
    {
        $sql = <<<'SQL'
SELECT domain_name AS object_name
  FROM information_schema.domains 
 WHERE domain_schema = ?
SQL;
        return $this->select($sql, $schema);
    }

    /**
     * Drop all functions in the schema.
     *
     * @param \Illuminate\Support\Collection $functions
     */
    public function dropFunctions($functions)
    {
        $functions->each(function ($function) {
            DB::statement("DROP FUNCTION IF EXISTS $function CASCADE");
        });
    }

    /**
     * Get a list of all functions in the schema.
     *
     * @param $schema
     * @return \Illuminate\Support\Collection
     */
    public function getFunctions($schema)
    {
        $sql = <<<'SQL'
SELECT proname || '(' || oidvectortypes(proargtypes) || ')' AS object_name
  FROM pg_proc INNER JOIN pg_namespace ns 
    ON pg_proc.pronamespace = ns.oid
 WHERE ns.nspname = ?  
 ORDER BY proname;
SQL;

        return $this->select($sql, $schema);
    }

    /**
     * Drop all sequences in the schema.
     *
     * @param \Illuminate\Support\Collection $sequences
     */
    public function dropSequences(Collection $sequences)
    {
        if ($sequences->isEmpty()) {
            return;
        }

        DB::statement("DROP SEQUENCE IF EXISTS {$sequences->implode(',')} CASCADE");
    }

    /**
     * Get a list of all sequences in the schema.
     *
     * @param $schema
     * @return \Illuminate\Support\Collection
     */
    public function getSequences($schema)
    {
        $sql = <<<'SQL'
SELECT sequence_name AS object_name
  FROM information_schema.sequences 
 WHERE sequence_schema = ?
SQL;
        return $this->select($sql, $schema);
    }

    /**
     * Drop tables.
     *
     * @param \Illuminate\Support\Collection $tables
     */
    protected function dropTables(Collection $tables)
    {
        if ($tables->isEmpty()) {
            return;
        }

        DB::statement("DROP TABLE IF EXISTS {$tables->implode(',')} CASCADE");
    }

    /**
     * Get a list of all tables in the schema.
     *
     * @param $schema
     * @return \Illuminate\Support\Collection
     */
    protected function getTables($schema)
    {
        $sql = <<<'SQL'
SELECT tablename AS object_name
  FROM pg_catalog.pg_tables 
 WHERE schemaname = ?
SQL;

        return $this->select($sql, $schema);
    }

    /**
     * Drop all views in the schema.
     *
     * @param \Illuminate\Support\Collection $views
     */
    public function dropViews($views)
    {
        DB::statement("DROP VIEW IF EXISTS {$views->implode(',')} CASCADE");
    }

    /**
     * Get a list of all views in the schema.
     *
     * @param $schema
     * @return \Illuminate\Support\Collection
     */
    public function getViews($schema)
    {
        $sql = <<<'SQL'
SELECT table_name AS object_name
  FROM information_schema.views 
 WHERE table_schema = ?
SQL;
        return $this->select($sql, $schema);
    }

    /**
     * Get schema name for the connection.
     *
     * @return string
     */
    protected function getSchema()
    {
        return DB::getConfig('schema');
    }

    /**
     * Execute the query and returns the list of values.
     *
     * @param string $sql
     * @param array $bindings
     * @param string $column
     * @return \Illuminate\Support\Collection
     */
    protected function select($sql, $bindings = [], $column = 'object_name')
    {
        return collect(
            DB::select($sql, collect($bindings)->all())
        )->pluck($column);
    }
}


1			<?php
2
3			namespace Spatie\MigrateFresh\TableDroppers;
4
5			use DB;
6			use Illuminate\Support\Collection;
7
8			class Pgsql implements TableDropper
9			{
10			public function dropAllTables()
11			{
12			$schema = $this->getSchema();
13
14			$this->dropViews($this->getViews($schema));
15			$this->dropTables($this->getTables($schema));
16			$this->dropFunctions($this->getFunctions($schema));
17			$this->dropSequences($this->getSequences($schema));
18			$this->dropDomains($this->getDomains($schema));
19			$this->dropCustomTypes($this->getCustomTypes($schema));
20			}
21
22			/**
23			* Drop all custom types in the schema.
24			*
25			* @param \Illuminate\Support\Collection $types
26			*/
27			public function dropCustomTypes($types)
28			{
29			DB::statement("DROP TYPE IF EXISTS {$types->implode(',')} CASCADE");
30			}
31
32			/**
33			* Get a list of all custom types in the schema.
34			*
35			* @param $schema
36			* @return \Illuminate\Support\Collection
37			*/
38			public function getCustomTypes($schema)
39			{
40			// For some reason imformation_schema.user_defined_types doesn't return the types
41			// See http://stackoverflow.com/questions/3660787/how-to-list-custom-types-using-postgres-information-schema/3703727#3703727
42			$sql = <<<'SQL'
43			SELECT t.typname AS object_name
44			FROM pg_type t LEFT JOIN pg_catalog.pg_namespace n
45			ON n.oid = t.typnamespace
46			WHERE (t.typrelid = 0 OR (SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid))
47			AND NOT EXISTS(SELECT 1 FROM pg_catalog.pg_type el WHERE el.oid = t.typelem AND el.typarray = t.oid)
48			AND t.typtype NOT IN('d')
49			AND n.nspname = ?
50			SQL;
51			return $this->select($sql, $schema);
52			}
53
54			/**
55			* Drop all domains in the schema.
56			*
57			* @param \Illuminate\Support\Collection $domains
58			*/
59			public function dropDomains($domains)
60			{
61			DB::statement("DROP DOMAIN IF EXISTS {$domains->implode(',')} CASCADE");
62			}
63
64			/**
65			* Get a list of all domains in the schema.
66			*
67			* @param $schema
68			* @return \Illuminate\Support\Collection
69			*/
70			public function getDomains($schema)
71			{
72			$sql = <<<'SQL'
73			SELECT domain_name AS object_name
74			FROM information_schema.domains
75			WHERE domain_schema = ?
76			SQL;
77			return $this->select($sql, $schema);
78			}
79
80			/**
81			* Drop all functions in the schema.
82			*
83			* @param \Illuminate\Support\Collection $functions
84			*/
85			public function dropFunctions($functions)
86			{
87			$functions->each(function ($function) {
88			DB::statement("DROP FUNCTION IF EXISTS $function CASCADE");
89			});
90			}
91
92			/**
93			* Get a list of all functions in the schema.
94			*
95			* @param $schema
96			* @return \Illuminate\Support\Collection
97			*/
98			public function getFunctions($schema)
99			{
100			$sql = <<<'SQL'
101			SELECT proname \|\| '(' \|\| oidvectortypes(proargtypes) \|\| ')' AS object_name
102			FROM pg_proc INNER JOIN pg_namespace ns
103			ON pg_proc.pronamespace = ns.oid
104			WHERE ns.nspname = ?
105			ORDER BY proname;
106			SQL;
107
108			return $this->select($sql, $schema);
109			}
110
111			/**
112			* Drop all sequences in the schema.
113			*
114			* @param \Illuminate\Support\Collection $sequences
115			*/
116			public function dropSequences(Collection $sequences)
117			{
118			if ($sequences->isEmpty()) {
119			return;
120			}
121
122			DB::statement("DROP SEQUENCE IF EXISTS {$sequences->implode(',')} CASCADE");
123			}
124
125			/**
126			* Get a list of all sequences in the schema.
127			*
128			* @param $schema
129			* @return \Illuminate\Support\Collection
130			*/
131			public function getSequences($schema)
132			{
133			$sql = <<<'SQL'
134			SELECT sequence_name AS object_name
135			FROM information_schema.sequences
136			WHERE sequence_schema = ?
137			SQL;
138			return $this->select($sql, $schema);
139			}
140
141			/**
142			* Drop tables.
143			*
144			* @param \Illuminate\Support\Collection $tables
145			*/
146			protected function dropTables(Collection $tables)
147			{
148			if ($tables->isEmpty()) {
149			return;
150			}
151
152			DB::statement("DROP TABLE IF EXISTS {$tables->implode(',')} CASCADE");
153			}
154
155			/**
156			* Get a list of all tables in the schema.
157			*
158			* @param $schema
159			* @return \Illuminate\Support\Collection
160			*/
161			protected function getTables($schema)
162			{
163			$sql = <<<'SQL'
164			SELECT tablename AS object_name
165			FROM pg_catalog.pg_tables
166			WHERE schemaname = ?
167			SQL;
168
169			return $this->select($sql, $schema);
170			}
171
172			/**
173			* Drop all views in the schema.
174			*
175			* @param \Illuminate\Support\Collection $views
176			*/
177			public function dropViews($views)
178			{
179			DB::statement("DROP VIEW IF EXISTS {$views->implode(',')} CASCADE");
180			}
181
182			/**
183			* Get a list of all views in the schema.
184			*
185			* @param $schema
186			* @return \Illuminate\Support\Collection
187			*/
188			public function getViews($schema)
189			{
190			$sql = <<<'SQL'
191			SELECT table_name AS object_name
192			FROM information_schema.views
193			WHERE table_schema = ?
194			SQL;
195			return $this->select($sql, $schema);
196			}
197
198			/**
199			* Get schema name for the connection.
200			*
201			* @return string
202			*/
203			protected function getSchema()
204			{
205			return DB::getConfig('schema');
206			}
207
208			/**
209			* Execute the query and returns the list of values.
210			*
211			* @param string $sql
212			* @param array $bindings
213			* @param string $column
214			* @return \Illuminate\Support\Collection
215			*/
216			protected function select($sql, $bindings = [], $column = 'object_name')
217			{
218			return collect(
219			DB::select($sql, collect($bindings)->all())
220			)->pluck($column);
221			}
222			}
223

spatie / laravel-migrate-fresh

Pull Request — master (#22)

Pgsql::dropTables() A

Complexity

Size

Duplication

Importance

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