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Misc. fixes to DboPostgres, added basic schema generation, and fixed getting insert IDs from sequence (Ticket #2309)

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git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@4727 3807eeeb-6ff5-0310-8944-8be069107fe0
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nate 2007-04-01 05:42:31 +00:00
parent 23fc1e8e53
commit a64434c636
1 changed files with 98 additions and 17 deletions
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109
cake/libs/model/datasources/dbo/dbo_postgres.php
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@ -156,7 +156,7 @@ class DboPostgres extends DboSource {
}
$fields = false;
$cols = $this->fetchAll("SELECT DISTINCT column_name AS name, data_type AS type, is_nullable AS null, column_default AS default, ordinal_position FROM information_schema.columns WHERE table_name =" . $this->value($model->tablePrefix . $model->table) . " ORDER BY ordinal_position");
$cols = $this->fetchAll("SELECT DISTINCT column_name AS name, data_type AS type, is_nullable AS null, column_default AS default, ordinal_position AS position, character_maximum_length AS char_length, character_octet_length AS oct_length FROM information_schema.columns WHERE table_name =" . $this->value($model->tablePrefix . $model->table) . " ORDER BY position");
foreach($cols as $column) {
$colKey = array_keys($column);
@ -166,18 +166,29 @@ class DboPostgres extends DboSource {
}
if (isset($column[0])) {
if (strpos($column[0]['default'], 'nextval(') === 0) {
$column[0]['default'] = null;
$c = $column[0];
if (strpos($c['default'], 'nextval(') === 0) {
$c['default'] = null;
}
if (!empty($c['char_length'])) {
$length = intval($c['char_length']);
} elseif (!empty($c['oct_length'])) {
$length = intval($c['oct_length']);
} else {
$length = $this->length($c['type']);
}
$fields[] = array(
'name' => $column[0]['name'],
'type' => $this->column($column[0]['type']),
'null' => $column[0]['null'],
'default' => $column[0]['default']
'name' => $c['name'],
'type' => $this->column($c['type']),
'null' => ($c['null'] == 'NO' ? false : true),
'default' => $c['default'],
'length' => $length
);
}
}
$this->__cacheDescription($model->tablePrefix . $model->table, $fields);
//pr($cols);
//pr($fields);
return $fields;
}
/**
@ -333,18 +344,13 @@ class DboPostgres extends DboSource {
}
}
if(strpos($sourceinfo['default'], 'nextval') === false) {
return null;
}
if (preg_match('/^nextval\(\'(\w+)\'/', $sourceinfo['default'], $matches)) {
$seq = $matches[1];
} else {
$seq = "{$source}_{$field}_seq";
}
$sql = "SELECT last_value AS max FROM \"{$seq}\"";
$res = $this->rawQuery($sql);
$res = $this->rawQuery("SELECT last_value AS max FROM \"{$seq}\"");
$data = $this->fetchRow($res);
return $data[0]['max'];
}
@ -369,7 +375,7 @@ class DboPostgres extends DboSource {
if ($count >= 1 && $fields[0] != '*' && strpos($fields[0], 'COUNT(*)') === false) {
for($i = 0; $i < $count; $i++) {
if (!preg_match('/^.+\\(.*\\)/', $fields[$i])) {
if (!preg_match('/^.+\\(.*\\)/', $fields[$i]) && !preg_match('/\s+AS\s+/', $fields[$i])) {
$prepend = '';
if (strpos($fields[$i], 'DISTINCT') !== false) {
$prepend = 'DISTINCT ';
@ -459,7 +465,29 @@ class DboPostgres extends DboSource {
}
return 'text';
}
/**
* Gets the length of a database-native column description, or null if no length
*
* @param string $real Real database-layer column type (i.e. "varchar(255)")
* @return int An integer representing the length of the column
*/
function length($real) {
$col = r(array(')', 'unsigned'), '', $real);
$limit = null;
if (strpos($col, '(') !== false) {
list($col, $limit) = explode('(', $col);
}
if ($limit != null) {
return intval($limit);
} elseif ($col == 'integer') {
return 11;
} elseif (in_array($col, array('int2', 'int4', 'int8'))) {
return intval(r('int', '', $col));
}
return null;
}
/**
* Enter description here...
*
@ -540,6 +568,59 @@ class DboPostgres extends DboSource {
function getEncoding() {
return pg_client_encoding($this->connection);
}
/**
* Generate a PostgreSQL-native column schema string
*
* @param array $column An array structured like the following: array('name', 'type'[, options]),
* where options can be 'default', 'length', or 'key'.
* @return string
*/
function generateColumnSchema($column) {
$name = $type = $out = null;
$column = am(array('null' => true), $column);
list($name, $type) = $column;
if (empty($name) || empty($type)) {
trigger_error('Column name or type not defined in schema', E_USER_WARNING);
return null;
}
if (!isset($this->columns[$type])) {
trigger_error("Column type {$type} does not exist", E_USER_WARNING);
return null;
}
$out = "\t" . $this->name($name) . ' ';
if (!isset($column['key']) || $column['key'] != 'primary') {
$real = $this->columns[$type];
$out .= $real['name'];
if (isset($real['limit']) || isset($real['length']) || isset($column['limit']) || isset($column['length'])) {
if (isset($column['length'])) {
$length = $column['length'];
} elseif (isset($column['limit'])) {
$length = $column['limit'];
} elseif (isset($real['length'])) {
$length = $real['length'];
} else {
$length = $real['limit'];
}
$out .= '(' . $length . ')';
}
}
if (isset($column['key']) && $column['key'] == 'primary') {
$out .= $this->columns['primary_key']['name'];
} elseif (isset($column['default'])) {
$out .= ' DEFAULT ' . $this->value($column['default'], $type);
} elseif (isset($column['null']) && $column['null'] == true) {
$out .= ' DEFAULT NULL';
} elseif (isset($column['default']) && isset($column['null']) && $column['null'] == false) {
$out .= ' DEFAULT ' . $this->value($column['default'], $type) . ' NOT NULL';
} elseif (isset($column['null']) && $column['null'] == false) {
$out .= ' NOT NULL';
}
return $out;
}
}
?>