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Adding alterSchema() to dbo_postgres. Also handles index alters. Tests added for field and index alter sql.

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git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@7923 3807eeeb-6ff5-0310-8944-8be069107fe0
This commit is contained in:
mark_story 2008-12-16 04:38:48 +00:00
parent 48c65c4092
commit ea9c080b1c
2 changed files with 233 additions and 1 deletions
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115
cake/libs/model/datasources/dbo/dbo_postgres.php
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@ -446,7 +446,7 @@ class DboPostgres extends DboSource {
AND n.nspname ~ '^(" . $this->config['schema'] . ")$'
)
AND c.oid = i.indrelid AND i.indexrelid = c2.oid
ORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname");
ORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname", false);
foreach ($indexes as $i => $info) {
$key = array_pop($info);
if ($key['indisprimary']) {
@ -464,6 +464,119 @@ class DboPostgres extends DboSource {
}
return $index;
}
/**
* Alter the Schema of a table.
*
* @param array $compare Results of CakeSchema::compare()
* @param string $table name of the table
* @access public
* @return array
*/
function alterSchema($compare, $table = null) {
if (!is_array($compare)) {
return false;
}
$out = '';
$colList = array();
foreach ($compare as $curTable => $types) {
$indexes = array();
if (!$table || $table == $curTable) {
$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";
foreach ($types as $type => $column) {
if (isset($column['indexes'])) {
$indexes[$type] = $column['indexes'];
unset($column['indexes']);
}
switch ($type) {
case 'add':
foreach ($column as $field => $col) {
$col['name'] = $field;
$alter = 'ADD COLUMN '.$this->buildColumn($col);
if (isset($col['after'])) {
$alter .= ' AFTER '. $this->name($col['after']);
}
$colList[] = $alter;
}
break;
case 'drop':
foreach ($column as $field => $col) {
$col['name'] = $field;
$colList[] = 'DROP COLUMN '.$this->name($field);
}
break;
case 'change':
foreach ($column as $field => $col) {
if (!isset($col['name'])) {
$col['name'] = $field;
}
$fieldName = $this->name($field);
$colList[] = 'ALTER COLUMN '. $fieldName .' TYPE ' . str_replace($fieldName, '', $this->buildColumn($col));
}
break;
}
}
if (isset($indexes['drop']['PRIMARY'])) {
$colList[] = 'DROP CONSTRAINT ' . $curTable . '_pkey';
}
if (isset($indexes['add']['PRIMARY'])) {
$cols = $indexes['add']['PRIMARY']['column'];
if (is_array($cols)) {
$cols = implode(', ', $cols);
}
$colList[] = 'ADD PRIMARY KEY (' . $cols . ')';
}
if (!empty($colList)) {
$out .= "\t" . join(",\n\t", $colList) . ";\n\n";
} else {
$out = '';
}
$out .= join(";\n\t", $this->_alterIndexes($curTable, $indexes)) . ";";
}
}
return $out;
}
/**
* Generate PostgreSQL index alteration statements for a table.
*
* @param string $table Table to alter indexes for
* @param array $new Indexes to add and drop
* @return array Index alteration statements
*/
function _alterIndexes($table, $indexes) {
$alter = array();
if (isset($indexes['drop'])) {
foreach($indexes['drop'] as $name => $value) {
$out = 'DROP ';
if ($name == 'PRIMARY') {
continue;
} else {
$out .= 'INDEX ' . $name;
}
$alter[] = $out;
}
}
if (isset($indexes['add'])) {
foreach ($indexes['add'] as $name => $value) {
$out = 'CREATE ';
if ($name == 'PRIMARY') {
continue;
} else {
if (!empty($value['unique'])) {
$out .= 'UNIQUE ';
}
$out .= 'INDEX ';
}
if (is_array($value['column'])) {
$out .= $name . ' ON ' . $table . ' (' . join(', ', array_map(array(&$this, 'name'), $value['column'])) . ')';
} else {
$out .= $name . ' ON ' . $table . ' (' . $this->name($value['column']) . ')';
}
$alter[] = $out;
}
}
return $alter;
}
/**
* Returns a limit statement in the correct format for the particular database.
*