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MDL-37420 add support for more PostgreSQL schemas

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This commit is contained in:
Petr Škoda 2013-01-08 17:12:31 +01:00
parent d55399a098
commit 6ad8d762da
2 changed files with 32 additions and 26 deletions
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24
lib/ddl/postgres_sql_generator.php
View file

@ -445,9 +445,11 @@ class postgres_sql_generator extends sql_generator {
$tablename = $this->getTableName($xmldb_table);
$sequencename = $tablename . '_id_seq';
if (!$this->mdb->get_record_sql("SELECT *
FROM pg_class
WHERE relname = ? AND relkind = 'S'",
if (!$this->mdb->get_record_sql("SELECT c.*
FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace as ns ON ns.oid = c.relnamespace
WHERE c.relname = ? AND c.relkind = 'S'
AND (ns.nspname = current_schema() OR ns.oid = pg_my_temp_schema())",
array($sequencename))) {
$sequencename = false;
}
@ -473,9 +475,11 @@ class postgres_sql_generator extends sql_generator {
case 'ix':
case 'uix':
case 'seq':
if ($check = $this->mdb->get_records_sql("SELECT relname
FROM pg_class
WHERE lower(relname) = ?", array(strtolower($object_name)))) {
if ($check = $this->mdb->get_records_sql("SELECT c.relname
FROM pg_class c
JOIN pg_catalog.pg_namespace as ns ON ns.oid = c.relnamespace
WHERE lower(c.relname) = ?
AND (ns.nspname = current_schema() OR ns.oid = pg_my_temp_schema())", array(strtolower($object_name)))) {
return true;
}
break;
@ -483,9 +487,11 @@ class postgres_sql_generator extends sql_generator {
case 'uk':
case 'fk':
case 'ck':
if ($check = $this->mdb->get_records_sql("SELECT conname
FROM pg_constraint
WHERE lower(conname) = ?", array(strtolower($object_name)))) {
if ($check = $this->mdb->get_records_sql("SELECT c.conname
FROM pg_constraint c
JOIN pg_catalog.pg_namespace as ns ON ns.oid = c.connamespace
WHERE lower(c.conname) = ?
AND (ns.nspname = current_schema() OR ns.oid = pg_my_temp_schema())", array(strtolower($object_name)))) {
return true;
}
break;

34
lib/dml/pgsql_native_moodle_database.php
View file

@ -184,6 +184,11 @@ class pgsql_native_moodle_database extends moodle_database {
$sql = "SET bytea_output = 'escape'; ";
}
// Select schema if specified, otherwise the first one wins.
if (isset($this->dboptions['dbschema'])) {
$sql .= "SET search_path = '".$this->dboptions['dbschema']."'; ";
}
// Find out the bytea oid.
$sql .= "SELECT oid FROM pg_type WHERE typname = 'bytea'";
$this->query_start($sql, null, SQL_QUERY_AUX);
@ -311,21 +316,12 @@ class pgsql_native_moodle_database extends moodle_database {
}
$this->tables = array();
$prefix = str_replace('_', '|_', $this->prefix);
if ($this->is_min_version('9.1')) {
// Use ANSI standard information_schema in recent versions where it is fast enough.
$sql = "SELECT table_name
FROM information_schema.tables
WHERE table_name LIKE '$prefix%' ESCAPE '|'
AND table_type IN ('BASE TABLE', 'LOCAL TEMPORARY')";
} else {
// information_schema is horribly slow in <= 9.0, so use pg internals.
// Note the pg_is_other_temp_schema. We only want temp objects from our own session.
$sql = "SELECT c.relname
FROM pg_class c
WHERE c.relname LIKE '$prefix%' ESCAPE '|'
$sql = "SELECT c.relname
FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace as ns ON ns.oid = c.relnamespace
WHERE c.relname LIKE '$prefix%' ESCAPE '|'
AND c.relkind = 'r'
AND NOT pg_is_other_temp_schema(c.relnamespace)";
}
AND (ns.nspname = current_schema() OR ns.oid = pg_my_temp_schema())";
$this->query_start($sql, null, SQL_QUERY_AUX);
$result = pg_query($this->pgsql, $sql);
$this->query_end($result);
@ -355,9 +351,11 @@ class pgsql_native_moodle_database extends moodle_database {
$indexes = array();
$tablename = $this->prefix.$table;
$sql = "SELECT *
FROM pg_catalog.pg_indexes
WHERE tablename = '$tablename'";
$sql = "SELECT i.*
FROM pg_catalog.pg_indexes i
JOIN pg_catalog.pg_namespace as ns ON ns.nspname = i.schemaname
WHERE i.tablename = '$tablename'
AND (i.schemaname = current_schema() OR ns.oid = pg_my_temp_schema())";
$this->query_start($sql, null, SQL_QUERY_AUX);
$result = pg_query($this->pgsql, $sql);
@ -409,10 +407,12 @@ class pgsql_native_moodle_database extends moodle_database {
$sql = "SELECT a.attnum, a.attname AS field, t.typname AS type, a.attlen, a.atttypmod, a.attnotnull, a.atthasdef, d.adsrc
FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace as ns ON ns.oid = c.relnamespace
JOIN pg_catalog.pg_attribute a ON a.attrelid = c.oid
JOIN pg_catalog.pg_type t ON t.oid = a.atttypid
LEFT JOIN pg_catalog.pg_attrdef d ON (d.adrelid = c.oid AND d.adnum = a.attnum)
WHERE relkind = 'r' AND c.relname = '$tablename' AND c.reltype > 0 AND a.attnum > 0
AND (ns.nspname = current_schema() OR ns.oid = pg_my_temp_schema())
ORDER BY a.attnum";
$this->query_start($sql, null, SQL_QUERY_AUX);