mirror of
https://github.com/silverstripe/silverstripe-postgresql
synced 2024-10-22 15:05:45 +00:00
FIXED: Improved parsing of index strings to support more index formats (array, string, variable index types in either form, etc).
UPDATED: Syntax to conform (better) to SS coding convention UPDATED: Refactor, cleanup, and simplification of alterTable to reduce duplication of effort. Use of index parsing mechanism to pre-prepare indexe specifications for generation. UPDATED: Better naming of variables (For instance, $indexName instead of $k) BUG: Index generation is still not working properly. To investigate.
This commit is contained in:
Damian Mooyman
parent
8cd458b818
commit
dc7334087c
@ -483,17 +483,15 @@ class PostgreSQLDatabase extends SS_Database {
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*/
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public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null, $alteredOptions = null, $advancedOptions = null) {
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$fieldSchemas = $indexSchemas = "";
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$alterList = array();
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if($newFields) foreach($newFields as $k => $v) $alterList[] .= "ADD \"$k\" $v";
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if($newFields) foreach($newFields as $fieldName => $fieldSpec) {
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$alterList[] = "ADD \"$fieldName\" $fieldSpec";
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}
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if($alteredFields) {
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foreach($alteredFields as $k => $v) {
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$val=$this->alterTableAlterColumn($tableName, $k, $v);
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if($val!='')
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$alterList[] .= $val;
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}
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if($alteredFields) foreach($alteredFields as $indexName => $indexSpec) {
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$val=$this->alterTableAlterColumn($tableName, $indexName, $indexSpec);
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if($val!='')
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$alterList[] = $val;
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}
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//Do we need to do anything with the tablespaces?
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@ -510,15 +508,15 @@ class PostgreSQLDatabase extends SS_Database {
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$fulltexts=false;
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$drop_triggers=false;
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$triggers=false;
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if($alteredIndexes) foreach($alteredIndexes as $key=>$v) {
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//We are only going to delete indexes which exist
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$indexes=$this->indexList($tableName);
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if($alteredIndexes) foreach($alteredIndexes as $indexName=>$indexSpec) {
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$indexSpec = $this->parseIndexSpec($indexName, $indexSpec);
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if($v['type']=='fulltext'){
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if($indexSpec['type']=='fulltext') {
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//For full text indexes, we need to drop the trigger, drop the index, AND drop the column
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//Go and get the tsearch details:
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$ts_details=$this->fulltext($v, $tableName, $key);
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$ts_details = $this->fulltext($indexSpec, $tableName, $indexName);
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//Drop this column if it already exists:
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@ -527,60 +525,41 @@ class PostgreSQLDatabase extends SS_Database {
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$fulltexts.="ALTER TABLE \"{$tableName}\" DROP COLUMN \"{$ts_details['ts_name']}\";";
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}
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$drop_triggers.= 'DROP TRIGGER IF EXISTS ts_' . strtolower($tableName) . '_' . strtolower($key) . ' ON "' . $tableName . '";';
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$alterIndexList[] = 'DROP INDEX IF EXISTS ix_' . strtolower($tableName) . '_' . strtolower($v['value']) . ';';
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//We'll execute these later:
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// We'll execute these later:
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$drop_triggers.= 'DROP TRIGGER IF EXISTS ts_' . strtolower($tableName) . '_' . strtolower($indexName) . ' ON "' . $tableName . '";';
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$fulltexts.="ALTER TABLE \"{$tableName}\" ADD COLUMN {$ts_details['fulltexts']};";
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$triggers.=$ts_details['triggers'];
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} else {
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if(isset($indexes[$v['value']])){
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if(is_array($v))
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$alterIndexList[] = 'DROP INDEX IF EXISTS ix_' . strtolower($tableName) . '_' . strtolower($v['value']) . ';';
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else
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$alterIndexList[] = 'DROP INDEX IF EXISTS ix_' . strtolower($tableName) . '_' . strtolower(trim($v, '()')) . ';';
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$k=$v['value'];
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$createIndex=$this->getIndexSqlDefinition($tableName, $k, $v);
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if($createIndex!==false)
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$alterIndexList[] .= $createIndex;
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}
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$triggers .= $ts_details['triggers'];
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}
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// Create index action (including fulltext)
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$alterIndexList[] = 'DROP INDEX IF EXISTS ix_' . strtolower($tableName) . '_' . strtolower($indexName) . ';';
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$createIndex = $this->getIndexSqlDefinition($tableName, $indexName, $indexSpec);
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if($createIndex!==false) $alterIndexList[] = $createIndex;
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}
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//If we have a fulltext search request, then we need to create a special column
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//for GiST searches
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//Pick up the new indexes here:
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if($newIndexes){
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foreach($newIndexes as $name=>$this_index){
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if(is_array($this_index) && $this_index['type']=='fulltext'){
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$ts_details=$this->fulltext($this_index, $tableName, $name);
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if(!isset($fieldList[$ts_details['ts_name']])){
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$fulltexts.="ALTER TABLE \"{$tableName}\" ADD COLUMN {$ts_details['fulltexts']};";
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$triggers.=$ts_details['triggers'];
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}
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//Add the new indexes:
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if($newIndexes) foreach($newIndexes as $indexName => $indexSpec){
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$indexSpec = $this->parseIndexSpec($indexName, $indexSpec);
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//If we have a fulltext search request, then we need to create a special column
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//for GiST searches
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//Pick up the new indexes here:
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if($indexSpec['type']=='fulltext') {
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$ts_details=$this->fulltext($indexSpec, $tableName, $indexName);
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if(!isset($fieldList[$ts_details['ts_name']])){
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$fulltexts.="ALTER TABLE \"{$tableName}\" ADD COLUMN {$ts_details['fulltexts']};";
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$triggers.=$ts_details['triggers'];
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}
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}
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}
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//Add the new indexes:
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if($newIndexes) foreach($newIndexes as $k=>$v){
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//Check that this index doesn't already exist:
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$indexes=$this->indexList($tableName);
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if(!is_array($v)){
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$name=trim($v, '()');
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} else {
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$name=(isset($v['name'])) ? $v['name'] : $k;
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}
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if(isset($indexes[$name])){
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if(is_array($v)){
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$alterIndexList[] = 'DROP INDEX IF EXISTS ix_' . strtolower($tableName) . '_' . strtolower($v['value']) . ';';
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} else {
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$alterIndexList[] = 'DROP INDEX IF EXISTS ' . $indexes[$name]['indexname'] . ';';
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}
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if(isset($indexes[$indexName])){
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$alterIndexList[] = 'DROP INDEX IF EXISTS ix_' . strtolower($tableName) . '_' . strtolower($indexName) . ';';
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}
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$createIndex=$this->getIndexSqlDefinition($tableName, $k, $v);
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$createIndex=$this->getIndexSqlDefinition($tableName, $indexName, $indexSpec);
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if($createIndex!==false)
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$alterIndexList[] = $createIndex;
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}
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@ -605,10 +584,8 @@ class PostgreSQLDatabase extends SS_Database {
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}
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//Create any fulltext columns and triggers here:
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if($fulltexts)
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$this->query($fulltexts);
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if($drop_triggers)
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$this->query($drop_triggers);
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if($fulltexts) $this->query($fulltexts);
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if($drop_triggers) $this->query($drop_triggers);
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if($triggers) {
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$this->query($triggers);
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@ -624,8 +601,7 @@ class PostgreSQLDatabase extends SS_Database {
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}
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}
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foreach($alterIndexList as $alteration)
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$this->query($alteration);
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foreach($alterIndexList as $alteration) $this->query($alteration);
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//If we have a partitioning requirement, we do that here:
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if($advancedOptions && isset($advancedOptions['partitions'])){
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@ -668,17 +644,17 @@ class PostgreSQLDatabase extends SS_Database {
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$pattern = '/^([\w()]+)\s?((?:not\s)?null)?\s?(default\s[\w\']+)?\s?(check\s[\w()\'",\s]+)?$/i';
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preg_match($pattern, $colSpec, $matches);
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if(sizeof($matches)==0)
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return '';
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if(sizeof($matches)==0) return '';
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if($matches[1]=='serial8')
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return '';
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if($matches[1]=='serial8') return '';
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if(isset($matches[1])) {
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$alterCol = "ALTER COLUMN \"$colName\" TYPE $matches[1]\n";
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// SET null / not null
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if(!empty($matches[2])) $alterCol .= ",\nALTER COLUMN \"$colName\" SET $matches[2]";
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if(!empty($matches[2])) {
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$alterCol .= ",\nALTER COLUMN \"$colName\" SET $matches[2]";
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}
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// SET default (we drop it first, for reasons of precaution)
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if(!empty($matches[3])) {
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@ -699,10 +675,12 @@ class PostgreSQLDatabase extends SS_Database {
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//We have to run this as a query, not as part of the alteration queries due to the way they are constructed.
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$updateConstraint='';
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$updateConstraint.="UPDATE \"{$tableName}\" SET \"$colName\"='$default' WHERE \"$colName\" NOT IN ($constraint_values);";
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if($this->hasTable("{$tableName}_Live"))
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if($this->hasTable("{$tableName}_Live")) {
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$updateConstraint.="UPDATE \"{$tableName}_Live\" SET \"$colName\"='$default' WHERE \"$colName\" NOT IN ($constraint_values);";
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if($this->hasTable("{$tableName}_versions"))
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}
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if($this->hasTable("{$tableName}_versions")) {
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$updateConstraint.="UPDATE \"{$tableName}_versions\" SET \"$colName\"='$default' WHERE \"$colName\" NOT IN ($constraint_values);";
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}
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DB::query($updateConstraint);
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}
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@ -793,7 +771,6 @@ class PostgreSQLDatabase extends SS_Database {
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//Check to see if there's a constraint attached to this column:
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//$constraint=$this->query("SELECT conname,pg_catalog.pg_get_constraintdef(r.oid, true) FROM pg_catalog.pg_constraint r WHERE r.contype = 'c' AND conname='" . $table . '_' . $field['column_name'] . "_check' ORDER BY 1;")->first();
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$constraint=$this->constraintExists($table . '_' . $field['column_name'] . '_check');
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$enum='';
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if($constraint){
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//Now we need to break this constraint text into bits so we can see what we have:
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//Examples:
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@ -882,10 +859,8 @@ class PostgreSQLDatabase extends SS_Database {
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* @return boolean
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*/
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function clearCachedFieldlist($tableName=false){
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if($tableName!=false){
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unset(self::$cached_fieldlists[$tableName]);
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} else
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self::$cached_fieldlists=array();
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if($tableName) unset(self::$cached_fieldlists[$tableName]);
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else self::$cached_fieldlists=array();
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return true;
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}
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@ -898,8 +873,7 @@ class PostgreSQLDatabase extends SS_Database {
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*/
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public function createIndex($tableName, $indexName, $indexSpec) {
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$createIndex=$this->getIndexSqlDefinition($tableName, $indexName, $indexSpec);
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if($createIndex!==false)
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$this->query();
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if($createIndex!==false) $this->query();
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}
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/*
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@ -907,6 +881,7 @@ class PostgreSQLDatabase extends SS_Database {
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* and turns it into a proper string.
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* Some indexes may be arrays, such as fulltext and unique indexes, and this allows database-specific
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* arrays to be created.
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* @see parseIndexSpec() for approximate inverse
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*/
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public function convertIndexSpec($indexSpec, $asDbValue=false, $table=''){
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@ -915,9 +890,7 @@ class PostgreSQLDatabase extends SS_Database {
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//Here we create a db-specific version of whatever index we need to create.
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switch($indexSpec['type']){
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case 'fulltext':
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//We need to include the fields so if we change the columns it's indexing, but not the name,
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//then the change will be picked up.
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$indexSpec='(' . $indexSpec['name'] . ',' . $indexSpec['value'] . ')';
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$indexSpec='fulltext (' . $indexSpec['value'] . ')';
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break;
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case 'unique':
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$indexSpec='unique (' . $indexSpec['value'] . ')';
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@ -937,6 +910,81 @@ class PostgreSQLDatabase extends SS_Database {
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}
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return $indexSpec;
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}
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/**
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* Splits a spec string safely, considering quoted columns, whitespace,
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* and cleaning brackets
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* @param string $spec The input index specification
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* @return array List of columns in the spec
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*/
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function explodeColumnString($spec) {
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// Remove any leading/trailing brackets and outlying modifiers
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// E.g. 'unique (Title, "QuotedColumn");' => 'Title, "QuotedColumn"'
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$containedSpec = preg_replace('/(.*\(\s*)|(\s*\).*)/', '', $spec);
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// Split potentially quoted modifiers
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// E.g. 'Title, "QuotedColumn"' => array('Title', 'QuotedColumn')
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return preg_split('/"?\s*,\s*"?/', trim($containedSpec, '(") '));
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}
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/**
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* Builds a properly quoted column list from an array
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* @param array $columns List of columns to implode
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* @return string A properly quoted list of column names
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*/
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function implodeColumnList($columns) {
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if(empty($columns)) return '';
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return '"' . implode('","', $columns) . '"';
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}
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/**
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* Given an index specification in the form of a string ensure that each
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* column name is property quoted, stripping brackets
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* @param string $spec The input specification
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* @return string The properly quoted column list
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*/
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function quoteColumnSpecString($spec) {
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$bits = $this->explodeColumnString($spec);
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return $this->implodeColumnList($bits);
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}
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/**
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* Given an index spec determines the index type
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* @param type $spec
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* @return string
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*/
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function determineIndexType($spec) {
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// check array spec
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if(is_array($spec) && isset($spec['type'])) {
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return $spec['type'];
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} elseif (!is_array($spec) && preg_match('/(?<type>\w+)\s*\(/', $spec, $matchType)) {
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return strtolower($matchType['type']);
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} else {
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return 'index';
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}
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}
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/**
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* Converts an array or string index spec into a universally useful array
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* @see convertIndexSpec() for approximate inverse
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* @param string|array $spec
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* @return array The resulting spec array with the required fields name, type, and value
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*/
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function parseIndexSpec($name, $spec){
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// Do minimal cleanup on any already parsed spec
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if(is_array($spec)) {
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$spec['value'] = $this->quoteColumnSpecString($spec['value']);
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return $spec;
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}
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// Nicely formatted spec!
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return array(
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'name' => $name,
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'value' => $this->quoteColumnSpecString($spec),
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'type' => $this->determineIndexType($spec)
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);
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}
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protected function getIndexSqlDefinition($tableName, $indexName, $indexSpec, $asDbValue=false) {
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@ -946,86 +994,60 @@ class PostgreSQLDatabase extends SS_Database {
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//NOTE: it is possible for *_renamed tables to have indexes whose names are not updates
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//Therefore, we now check for the existance of indexes before we create them.
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//This is techically a bug, since new tables will not be indexed.
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if(!$asDbValue){
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$tableCol= 'ix_' . str_replace("\\", "_", $tableName) . '_' . $indexName;
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if(strlen($tableCol)>64){
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$tableCol=substr($indexName, 0, 59) . rand(1000, 9999);
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}
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//It is possible to specify indexes through strings:
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if(!is_array($indexSpec)){
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$indexSpec=trim($indexSpec, '()');
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$bits=explode(',', $indexSpec);
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$indexes="\"" . implode("\",\"", $bits) . "\"";
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// if some of the indexes have already been quoted then we need to remove the suplus double quotes
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$indexes = str_replace('""', '"', $indexes);
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//One last check:
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$existing=DB::query("SELECT tablename FROM pg_indexes WHERE indexname='" . strtolower($tableCol) . "';")->first();
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if(!$existing)
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return "create index $tableCol ON \"" . $tableName . "\" (" . $indexes . ");";
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else
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return false;
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} else {
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//Arrays offer much more flexibility and many more options:
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//Misc options first:
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$fillfactor=$where='';
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if(isset($indexSpec['fillfactor']))
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$fillfactor='WITH (FILLFACTOR = ' . $indexSpec['fillfactor'] . ')';
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if(isset($indexSpec['where']))
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$where='WHERE ' . $indexSpec['where'];
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//Fix up the value entry to be quoted:
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$value_bits=explode(',', $indexSpec['value']);
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$new_values=Array();
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foreach($value_bits as $value){
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$new_values[]="\"" . trim($value, ' "') . "\"";
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}
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$indexSpec['value']=implode(',', $new_values);
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//One last check:
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$existing=DB::query("SELECT tablename FROM pg_indexes WHERE indexname='" . strtolower($tableCol) . "';");
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if(!$existing->first()){
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//create a type-specific index
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//NOTE: hash should be removed. This is only here to demonstrate how other indexes can be made
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switch($indexSpec['type']){
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case 'fulltext':
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$spec="create index $tableCol ON \"" . $tableName . "\" USING " . $this->default_fts_cluster_method . "(\"ts_" . $indexName . "\") $fillfactor $where";
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break;
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case 'unique':
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$spec="create unique index $tableCol ON \"" . $tableName . "\" (" . $indexSpec['value'] . ") $fillfactor $where";
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break;
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case 'btree':
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$spec="create index $tableCol ON \"" . $tableName . "\" USING btree (" . $indexSpec['value'] . ") $fillfactor $where";
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break;
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case 'hash':
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//NOTE: this is not a recommended index type
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$spec="create index $tableCol ON \"" . $tableName . "\" USING hash (" . $indexSpec['value'] . ") $fillfactor $where";
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break;
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case 'index':
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//'index' is the same as default, just a normal index with the default type decided by the database.
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default:
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$spec="create index $tableCol ON \"" . $tableName . "\" (" . $indexSpec['value'] . ") $fillfactor $where";
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}
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return trim($spec) . ';';
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} else {
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return false;
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}
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}
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} else {
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// If requesting the definition rather than the DDL
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if($asDbValue) {
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$indexName=trim($indexName, '()');
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return $indexName;
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}
|
||||
|
||||
// Determine index name and check for existence
|
||||
$tableCol= 'ix_' . str_replace("\\", "_", $tableName) . '_' . $indexName;
|
||||
if(strlen($tableCol)>64){
|
||||
$tableCol=substr($indexName, 0, 59) . rand(1000, 9999);
|
||||
}
|
||||
$existing=DB::query("SELECT tablename FROM pg_indexes WHERE indexname='" . strtolower($tableCol) . "';")->first();
|
||||
if($existing) return false;
|
||||
|
||||
// Consolidate/Cleanup spec into array format
|
||||
$indexSpec = $this->parseIndexSpec($indexName, $indexSpec);
|
||||
|
||||
//Misc options first:
|
||||
$fillfactor=$where='';
|
||||
if(isset($indexSpec['fillfactor'])) {
|
||||
$fillfactor='WITH (FILLFACTOR = ' . $indexSpec['fillfactor'] . ')';
|
||||
}
|
||||
if(isset($indexSpec['where'])) {
|
||||
$where='WHERE ' . $indexSpec['where'];
|
||||
}
|
||||
|
||||
//create a type-specific index
|
||||
//NOTE: hash should be removed. This is only here to demonstrate how other indexes can be made
|
||||
switch($indexSpec['type']){
|
||||
case 'fulltext':
|
||||
// @see fulltext() for the definition of the trigger that ts_$IndexName uses for fulltext searching
|
||||
$spec="create index $tableCol ON \"" . $tableName . "\" USING " . $this->default_fts_cluster_method . "(\"ts_" . $indexName . "\") $fillfactor $where";
|
||||
break;
|
||||
|
||||
case 'unique':
|
||||
$spec="create unique index $tableCol ON \"" . $tableName . "\" (" . $indexSpec['value'] . ") $fillfactor $where";
|
||||
break;
|
||||
|
||||
case 'btree':
|
||||
$spec="create index $tableCol ON \"" . $tableName . "\" USING btree (" . $indexSpec['value'] . ") $fillfactor $where";
|
||||
break;
|
||||
|
||||
case 'hash':
|
||||
//NOTE: this is not a recommended index type
|
||||
$spec="create index $tableCol ON \"" . $tableName . "\" USING hash (" . $indexSpec['value'] . ") $fillfactor $where";
|
||||
break;
|
||||
|
||||
case 'index':
|
||||
//'index' is the same as default, just a normal index with the default type decided by the database.
|
||||
default:
|
||||
$spec="create index $tableCol ON \"" . $tableName . "\" (" . $indexSpec['value'] . ") $fillfactor $where";
|
||||
}
|
||||
return trim($spec) . ';';
|
||||
}
|
||||
|
||||
function getDbSqlDefinition($tableName, $indexName, $indexSpec){
|
||||
@ -1067,29 +1089,34 @@ class PostgreSQLDatabase extends SS_Database {
|
||||
|
||||
$indexList=Array();
|
||||
foreach($indexes as $index) {
|
||||
|
||||
//We don't actually need the entire created command, just a few bits:
|
||||
$prefix='';
|
||||
|
||||
//Check for uniques:
|
||||
if(substr($index['indexdef'], 0, 13)=='CREATE UNIQUE')
|
||||
if(substr($index['indexdef'], 0, 13)=='CREATE UNIQUE') {
|
||||
$prefix='unique ';
|
||||
}
|
||||
|
||||
//check for hashes, btrees etc:
|
||||
if(strpos(strtolower($index['indexdef']), 'using hash ')!==false)
|
||||
if(strpos(strtolower($index['indexdef']), 'using hash ')!==false) {
|
||||
$prefix='using hash ';
|
||||
}
|
||||
|
||||
//TODO: Fix me: btree is the default index type:
|
||||
//if(strpos(strtolower($index['indexdef']), 'using btree ')!==false)
|
||||
// $prefix='using btree ';
|
||||
|
||||
if(strpos(strtolower($index['indexdef']), 'using rtree ')!==false)
|
||||
if(strpos(strtolower($index['indexdef']), 'using rtree ')!==false) {
|
||||
$prefix='using rtree ';
|
||||
}
|
||||
|
||||
$value=explode(' ', substr($index['indexdef'], strpos($index['indexdef'], ' USING ')+7));
|
||||
|
||||
if(sizeof($value)>2){
|
||||
for($i=2; $i<sizeof($value); $i++)
|
||||
for($i=2; $i<sizeof($value); $i++) {
|
||||
$value[1].=$value[$i];
|
||||
}
|
||||
}
|
||||
|
||||
$key=substr($value[1], 0, strpos($value[1], ')'));
|
||||
@ -1121,15 +1148,16 @@ class PostgreSQLDatabase extends SS_Database {
|
||||
return $tables;
|
||||
}
|
||||
|
||||
/**
|
||||
* Determines if a table exists
|
||||
* @param string $tableName
|
||||
* @return boolean
|
||||
*/
|
||||
function TableExists($tableName){
|
||||
$schema_SQL = pg_escape_string($this->dbConn, $this->schema);
|
||||
$result=$this->query("SELECT tablename FROM pg_catalog.pg_tables WHERE schemaname = '{$schema_SQL}' AND tablename='" . $this->addslashes($tableName) . "';")->first();
|
||||
|
||||
if($result)
|
||||
return true;
|
||||
else
|
||||
return false;
|
||||
|
||||
return !empty($result);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1449,11 +1477,7 @@ class PostgreSQLDatabase extends SS_Database {
|
||||
*/
|
||||
function fulltext($this_index, $tableName, $name){
|
||||
//For full text search, we need to create a column for the index
|
||||
$columns=explode(',', $this_index['value']);
|
||||
for($i=0; $i<sizeof($columns);$i++)
|
||||
$columns[$i]="\"" . trim($columns[$i]) . "\"";
|
||||
|
||||
$columns=implode(', ', $columns);
|
||||
$columns = $this->quoteColumnSpecString($this_index['value']);
|
||||
|
||||
$fulltexts="\"ts_$name\" tsvector";
|
||||
$triggerName="ts_{$tableName}_{$name}";
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user