mirror of
https://github.com/silverstripe/silverstripe-mssql
synced 2024-09-30 21:29:29 +02:00
BUGFIX: Fix the generation of fields to be more accurate, and detection of existing fields to be more accurate, so as not to run unnecessary field type change operations.
This commit is contained in:
Sam Minnee
parent
f555c3518f
commit
8e7516e537
@ -350,8 +350,7 @@ class MSSQLDatabase extends Database {
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$indexList=$this->IndexList($tableName);
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if($alteredFields) {
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foreach($alteredFields as $k => $v) {
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foreach($alteredFields as $k => $v) {
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$val=$this->alterTableAlterColumn($tableName, $k, $v, $indexList);
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if($val!='')
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$alterList[] .= $val;
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@ -404,6 +403,21 @@ class MSSQLDatabase extends Database {
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$constraint = $this->query("SELECT CC.CONSTRAINT_NAME, CAST(CHECK_CLAUSE AS TEXT) AS CHECK_CLAUSE, COLUMN_NAME FROM INFORMATION_SCHEMA.CHECK_CONSTRAINTS AS CC INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS CCU ON CCU.CONSTRAINT_NAME=CC.CONSTRAINT_NAME WHERE TABLE_NAME='$tableName' AND COLUMN_NAME='" . $columnName . "';")->first();
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return $constraint;
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}
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/**
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* Return the name of the default constraint applied to $tableName.$colName.
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* Will return null if no such constraint exists
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*/
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private function defaultConstraintName($tableName, $colName) {
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return $this->query("SELECT s.name --default name
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FROM sys.sysobjects s
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join sys.syscolumns c ON s.parent_obj = c.id
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WHERE s.xtype = 'd'
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and c.cdefault = s.id
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and parent_obj= OBJECT_ID('$tableName')
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and c.name = '$colName'")->value();
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}
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/**
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* Get the actual enum fields from the constraint value:
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@ -448,37 +462,23 @@ class MSSQLDatabase extends Database {
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if(isset($indexList[$colName])){
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$alterCol = "\nDROP INDEX \"$tableName\".ix_{$tableName}_{$colName};";
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}
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$prefix="ALTER TABLE \"" . $tableName . "\" ";
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// Remove the old default prior to adjusting the column.
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if($defaultConstraintName = $this->defaultConstraintName($tableName, $colName)) {
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$alterCol .= ";\n$prefix DROP CONSTRAINT \"$defaultConstraintName\"";
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}
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if(isset($matches[1])) {
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$alterCol .= "\n$prefix ALTER COLUMN \"$colName\" $matches[1]\n";
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$alterCol .= ";\n$prefix ALTER COLUMN \"$colName\" $matches[1]";
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// SET null / not null
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if(!empty($matches[2])) $alterCol .= ";\n$prefix ALTER COLUMN \"$colName\" $matches[1] $matches[2]";
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// SET default (we drop it first, for reasons of precaution)
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//TODO: changing default values not implemented yet:
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if(!empty($matches[3])) {
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$constraint_name="{$tableName}_{$colName}_default";
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//$alterCol .= ";\n$prefix ALTER COLUMN \"$colName\" DROP DEFAULT";
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//$alterCol .= ";\n$prefix ALTER COLUMN \"$colName\" SET $matches[3]";
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/*$constraint_query="
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SELECT OBJECT_NAME(OBJECT_ID) AS NameofConstraint,
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SCHEMA_NAME(schema_id) AS SchemaName,
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OBJECT_NAME(parent_object_id) AS TableName,
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type_desc AS ConstraintType
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FROM sys.objects
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WHERE type_desc LIKE '%CONSTRAINT' AND OBJECT_NAME(parent_object_id)='{$tableName}' AND type_desc='DEFAULT_CONSTRAINT' AND OBJECT_NAME(OBJECT_ID)='$constraint_name'";
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$constraint_result=$this->query($constraint_query)->first();
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if($constraint_result){
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//$alterCol.= ";\n$prefix DROP DEFAULT";
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$alterCol .= ";\n$prefix DROP CONSTRAINT $constraint_name";
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}
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$alterCol .= ";\n$prefix ADD CONSTRAINT \"$constraint_name\" {$matches[3]} FOR $colName";*/
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}
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// Add a default back
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if(!empty($matches[3])) $alterCol .= ";\n$prefix ADD $matches[3] FOR \"$colName\"";
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// SET check constraint (The constraint HAS to be dropped)
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if(!empty($matches[4])) {
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$constraint=$this->ColumnConstraints($tableName, $colName);
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@ -554,11 +554,52 @@ class MSSQLDatabase extends Database {
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public function fieldList($table) {
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//This gets us more information than we need, but I've included it all for the moment....
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$fields = $this->query("SELECT ordinal_position, column_name, data_type, column_default, is_nullable, character_maximum_length, numeric_precision FROM information_schema.columns WHERE table_name = '$table' ORDER BY ordinal_position;");
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$fields = $this->query("SELECT ordinal_position, column_name, data_type, column_default,
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is_nullable, character_maximum_length, numeric_precision, numeric_scale
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FROM information_schema.columns WHERE table_name = '$table'
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ORDER BY ordinal_position;");
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$output = array();
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if($fields) foreach($fields as $field) {
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// Update the data_type field to be a complete column definition string for use by
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// Database::requireField()
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switch($field['data_type']){
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case 'bigint':
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case 'numeric':
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case 'float':
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case 'bit':
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if($sizeSuffix = $field['numeric_precision']) {
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$field['data_type'] .= "($sizeSuffix)";
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}
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if($field['is_nullable'] == 'YES') {
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$field['data_type'] .= ' null';
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} else {
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$field['data_type'] .= ' not null';
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}
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if($field['column_default']) {
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$default=substr($field['column_default'], 2, -2);
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$field['data_type'] .= " default $default";
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}
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break;
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case 'decimal':
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if($field['numeric_precision']) {
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$sizeSuffix = $field['numeric_precision'] . ',' . $field['numeric_scale'];
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$field['data_type'] .= "($sizeSuffix)";
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}
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if($field['is_nullable'] == 'YES') {
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$field['data_type'] .= ' null';
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} else {
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$field['data_type'] .= ' not null';
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}
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if($field['column_default']) {
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$default=substr($field['column_default'], 2, -2);
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$field['data_type'] .= " default $default";
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}
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break;
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case 'varchar':
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//Check to see if there's a constraint attached to this column:
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$constraint=$this->ColumnConstraints($table, $field['column_name']);
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@ -566,13 +607,27 @@ class MSSQLDatabase extends Database {
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$constraints=$this->EnumValuesFromConstraint($constraint['CHECK_CLAUSE']);
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$default=substr($field['column_default'], 2, -2);
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$field['data_type']=$this->enum(Array('default'=>$default, 'name'=>$field['column_name'], 'enums'=>$constraints, 'table'=>$table));
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break;
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}
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$output[$field['column_name']]=$field;
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break;
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default:
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$output[$field['column_name']] = $field;
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$sizeSuffix = $field['character_maximum_length'];
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if($sizeSuffix == '-1') $sizeSuffix = 'max';
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if($sizeSuffix) {
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$field['data_type'] .= "($sizeSuffix)";
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}
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if($field['is_nullable'] == 'YES') {
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$field['data_type'] .= ' null';
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} else {
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$field['data_type'] .= ' not null';
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}
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if($field['column_default']) {
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$default=substr($field['column_default'], 2, -2);
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$field['data_type'] .= " default '$default'";
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}
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}
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$output[$field['column_name']]=$field;
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}
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@ -780,10 +835,14 @@ class MSSQLDatabase extends Database {
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//Annoyingly, we need to do a good ol' fashioned switch here:
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($values['default']) ? $default='1' : $default='0';
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if($asDbValue)
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return 'bit';
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else
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if($asDbValue) {
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return array(
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'data_type'=>'bit',
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'default' => $default
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);
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} else {
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return 'bit not null default ' . $default;
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}
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}
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/**
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@ -793,10 +852,13 @@ class MSSQLDatabase extends Database {
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* @return string
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*/
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public function date($values, $asDbValue=false){
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if($asDbValue)
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return 'datetime';
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else
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if($asDbValue) {
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return array(
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'data_type' => 'decimal',
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);
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} else {
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return 'datetime null';
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}
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}
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/**
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@ -824,13 +886,24 @@ class MSSQLDatabase extends Database {
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* @params array $values Contains a tokenised list of info about this data type
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* @return string
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*/
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public function enum($values){
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//Enums are a bit different. We'll be creating a varchar(255) with a constraint of all the usual enum options.
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//NOTE: In this one instance, we are including the table name in the values array
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return "varchar(255) not null default '" . $values['default'] . "' check(\"" . $values['name'] . "\" in ('" . implode('\', \'', $values['enums']) . "'))";
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//return "varchar(255) not null check(\"" . $values['name'] . "\" in ('" . implode('\', \'', $values['enums']) . "')); add constraint \"" . $values['table'] . '_' . $values['name'] . "_default\" default '" . $values['default'] . "' for \"" . $values['name'] . "\"";
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public function enum($values, $asDbValue=false){
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// Enums are a bit different. We'll be creating a varchar(255) with a constraint of all the
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// usual enum options.
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// NOTE: In this one instance, we are including the table name in the values array
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$maxLength = max(array_map('strlen', $values['enums']));
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if($asDbValue) {
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return array(
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'data_type'=>'varchar',
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'default' => $values['default'],
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'character_maximum_length'=>$maxLength,
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);
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} else {
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return "varchar($maxLength) not null default '" . $values['default']
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. "' check(\"" . $values['name'] . "\" in ('" . implode("','", $values['enums'])
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. "'))";
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}
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}
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/**
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@ -880,10 +953,14 @@ class MSSQLDatabase extends Database {
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* @return string
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*/
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public function text($values, $asDbValue=false){
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if($asDbValue)
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return Array('data_type'=>'varchar(max)');
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else
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if($asDbValue) {
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return array(
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'data_type'=>'varchar',
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'character_maximum_length' => -1,
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);
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} else {
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return 'varchar(max) null';
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}
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}
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/**
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@ -904,7 +981,7 @@ class MSSQLDatabase extends Database {
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*/
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public function varchar($values, $asDbValue=false){
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if($asDbValue)
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return Array('data_type'=>'varchar', 'character_maximum_length'=>'255');
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return Array('data_type'=>'varchar', 'character_maximum_length'=>$values['precision']);
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else
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return 'varchar(' . $values['precision'] . ') null';
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}
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@ -950,11 +1027,11 @@ class MSSQLDatabase extends Database {
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function IdColumn($asDbValue=false, $hasAutoIncPK=true){
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if($asDbValue)
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return 'bigint';
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return 'bigint(19) not null';
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else {
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if($hasAutoIncPK)
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return 'bigint identity(1,1)';
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else return 'bigint';
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return 'bigint(19) identity(1,1)';
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else return 'bigint(19) not null';
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}
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}
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