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Adding field map to convert aliased column names in MSSQL queries

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git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@4859 3807eeeb-6ff5-0310-8944-8be069107fe0
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nate 2007-04-14 23:34:08 +00:00
parent ef79f256a7
commit c9b2da1380
1 changed files with 30 additions and 11 deletions
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41
cake/libs/model/datasources/dbo/dbo_mssql.php
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@ -271,11 +271,11 @@ class DboMssql extends DboSource {
$fieldAlias = count($this->__fieldMappings);
if ($dot === false) {
$this->__fieldMappings[] = $fields[$i];
$this->__fieldMappings[$alias . '__' . $fieldAlias] = $alias . '.' . $fields[$i];
$fields[$i] = $this->name($alias) . '.' . $this->name($fields[$i]) . ' AS ' . $this->name($alias . '__' . $fieldAlias);
} else {
} elseif (!preg_match('/\]\.\[[^\s]+ AS \[/', $fields[$i])) {
$build = explode('.', $fields[$i]);
$this->__fieldMappings[] = $build[0];
$this->__fieldMappings[$build[0] . '__' . $fieldAlias] = $build[0] . '.' . $build[1];
$fields[$i] = $this->name($build[0]) . '.' . $this->name($build[1]) . ' AS ' . $this->name($build[0] . '__' . $fieldAlias);
}
}
@ -428,7 +428,6 @@ class DboMssql extends DboSource {
if (isset($real['limit'])) {
$col .= '(' . $real['limit'] . ')';
}
return $col;
}
$col = r(')', '', $real);
@ -480,11 +479,13 @@ class DboMssql extends DboSource {
$column = mssql_field_name($results, $j);
if (strpos($column, '__')) {
$map = explode('__', $column);
if (is_numeric($map[1])) {
$map[1] = $this->__fieldMappings[intval($map[1])];
if (isset($this->__fieldMappings[$column]) && strpos($this->__fieldMappings[$column], '.')) {
$map = explode('.', $this->__fieldMappings[$column]);
} elseif(isset($this->__fieldMappings[$column])) {
$map = array(0, $this->__fieldMappings[$column]);
} else {
$map = array(0, $column);
}
$this->map[$index++] = $map;
} else {
$this->map[$index++] = array(0, $column);
@ -502,10 +503,11 @@ class DboMssql extends DboSource {
extract($data);
if (preg_match('/offset\s+([0-9]+)/i', $limit, $offset)) {
$limit = preg_replace('/\s*offset.*$/i', '', $limit);
$limitVal = preg_match('/top\s+([0-9]+)/i', $limit);
preg_match('/top\s+([0-9]+)/i', $limit, $limitVal);
$offset = intval($offset[1]) + intval($limitVal[1]);
$rOrder = $this->__switchSort($order);
return "SELECT * FROM (SELECT {$limit} * FROM (SELECT TOP {$offset} {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$order}) AS Set1 {$rOrder}) AS Set2 {$order}";
list($order2, $rOrder) = array($this->__mapFields($order), $this->__mapFields($rOrder));
return "SELECT * FROM (SELECT {$limit} * FROM (SELECT TOP {$offset} {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$order}) AS Set1 {$rOrder}) AS Set2 {$order2}";
} else {
return "SELECT {$limit} {$fields} FROM {$table} {$alias} {$joins} {$conditions} {$order}";
}
@ -522,6 +524,23 @@ class DboMssql extends DboSource {
$order = preg_replace('/\s+DESC/i', ' ASC', $order);
return preg_replace('/__tmp_asc__/', ' DESC', $order);
}
/**
* Translates field names used for filtering and sorting to shortened names using the field map
*
* @param string $sql A snippet of SQL representing an ORDER or WHERE statement
* @return string The value of $sql with field names replaced
* @access private
*/
function __mapFields($sql) {
if (empty($sql) || empty($this->__fieldMappings)) {
return $sql;
}
foreach ($this->__fieldMappings as $key => $val) {
$sql = preg_replace('/' . preg_quote($val) . '/', $this->name($key), $sql);
$sql = preg_replace('/' . preg_quote($this->name($val)) . '/', $this->name($key), $sql);
}
return $sql;
}
/**
* Returns an array of all result rows for a given SQL query.
* Returns false if no rows matched.
@ -533,6 +552,7 @@ class DboMssql extends DboSource {
function read(&$model, $queryData = array(), $recursive = null) {
$results = parent::read($model, $queryData, $recursive);
$this->__fieldMappings = array();
$this->__fieldMapBase = null;
return $results;
}
/**
@ -550,7 +570,6 @@ class DboMssql extends DboSource {
$resultRow[$table][$column] = $row[$index];
$i++;
}
return $resultRow;
} else {
return false;