diff options
Diffstat (limited to 'vendor/adodb/adodb-php/datadict/datadict-postgres.inc.php')
| -rw-r--r-- | vendor/adodb/adodb-php/datadict/datadict-postgres.inc.php | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/vendor/adodb/adodb-php/datadict/datadict-postgres.inc.php b/vendor/adodb/adodb-php/datadict/datadict-postgres.inc.php new file mode 100644 index 0000000..b1a9355 --- /dev/null +++ b/vendor/adodb/adodb-php/datadict/datadict-postgres.inc.php @@ -0,0 +1,484 @@ +<?php + +/** + @version v5.20.14 06-Jan-2019 + @copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved. + @copyright (c) 2014 Damien Regad, Mark Newnham and the ADOdb community + Released under both BSD license and Lesser GPL library license. + Whenever there is any discrepancy between the two licenses, + the BSD license will take precedence. + + Set tabs to 4 for best viewing. + +*/ + +// security - hide paths +if (!defined('ADODB_DIR')) die(); + +class ADODB2_postgres extends ADODB_DataDict { + + var $databaseType = 'postgres'; + var $seqField = false; + var $seqPrefix = 'SEQ_'; + var $addCol = ' ADD COLUMN'; + var $quote = '"'; + var $renameTable = 'ALTER TABLE %s RENAME TO %s'; // at least since 7.1 + var $dropTable = 'DROP TABLE %s CASCADE'; + + function MetaType($t,$len=-1,$fieldobj=false) + { + if (is_object($t)) { + $fieldobj = $t; + $t = $fieldobj->type; + $len = $fieldobj->max_length; + } + $is_serial = is_object($fieldobj) && !empty($fieldobj->primary_key) && !empty($fieldobj->unique) && + !empty($fieldobj->has_default) && substr($fieldobj->default_value,0,8) == 'nextval('; + + switch (strtoupper($t)) { + case 'INTERVAL': + case 'CHAR': + case 'CHARACTER': + case 'VARCHAR': + case 'NAME': + case 'BPCHAR': + if ($len <= $this->blobSize) return 'C'; + + case 'TEXT': + return 'X'; + + case 'IMAGE': // user defined type + case 'BLOB': // user defined type + case 'BIT': // This is a bit string, not a single bit, so don't return 'L' + case 'VARBIT': + case 'BYTEA': + return 'B'; + + case 'BOOL': + case 'BOOLEAN': + return 'L'; + + case 'DATE': + return 'D'; + + case 'TIME': + case 'DATETIME': + case 'TIMESTAMP': + case 'TIMESTAMPTZ': + return 'T'; + + case 'INTEGER': return !$is_serial ? 'I' : 'R'; + case 'SMALLINT': + case 'INT2': return !$is_serial ? 'I2' : 'R'; + case 'INT4': return !$is_serial ? 'I4' : 'R'; + case 'BIGINT': + case 'INT8': return !$is_serial ? 'I8' : 'R'; + + case 'OID': + case 'SERIAL': + return 'R'; + + case 'FLOAT4': + case 'FLOAT8': + case 'DOUBLE PRECISION': + case 'REAL': + return 'F'; + + default: + return 'N'; + } + } + + function ActualType($meta) + { + switch($meta) { + case 'C': return 'VARCHAR'; + case 'XL': + case 'X': return 'TEXT'; + + case 'C2': return 'VARCHAR'; + case 'X2': return 'TEXT'; + + case 'B': return 'BYTEA'; + + case 'D': return 'DATE'; + case 'TS': + case 'T': return 'TIMESTAMP'; + + case 'L': return 'BOOLEAN'; + case 'I': return 'INTEGER'; + case 'I1': return 'SMALLINT'; + case 'I2': return 'INT2'; + case 'I4': return 'INT4'; + case 'I8': return 'INT8'; + + case 'F': return 'FLOAT8'; + case 'N': return 'NUMERIC'; + default: + return $meta; + } + } + + /** + * Adding a new Column + * + * reimplementation of the default function as postgres does NOT allow to set the default in the same statement + * + * @param string $tabname table-name + * @param string $flds column-names and types for the changed columns + * @return array with SQL strings + */ + function AddColumnSQL($tabname, $flds) + { + $tabname = $this->TableName ($tabname); + $sql = array(); + $not_null = false; + list($lines,$pkey) = $this->_GenFields($flds); + $alter = 'ALTER TABLE ' . $tabname . $this->addCol . ' '; + foreach($lines as $v) { + if (($not_null = preg_match('/NOT NULL/i',$v))) { + $v = preg_replace('/NOT NULL/i','',$v); + } + if (preg_match('/^([^ ]+) .*DEFAULT (\'[^\']+\'|\"[^\"]+\"|[^ ]+)/',$v,$matches)) { + list(,$colname,$default) = $matches; + $sql[] = $alter . str_replace('DEFAULT '.$default,'',$v); + $sql[] = 'UPDATE '.$tabname.' SET '.$colname.'='.$default; + $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET DEFAULT ' . $default; + } else { + $sql[] = $alter . $v; + } + if ($not_null) { + list($colname) = explode(' ',$v); + $sql[] = 'ALTER TABLE '.$tabname.' ALTER COLUMN '.$colname.' SET NOT NULL'; + } + } + return $sql; + } + + + function DropIndexSQL ($idxname, $tabname = NULL) + { + return array(sprintf($this->dropIndex, $this->TableName($idxname), $this->TableName($tabname))); + } + + /** + * Change the definition of one column + * + * Postgres can't do that on it's own, you need to supply the complete defintion of the new table, + * to allow, recreating the table and copying the content over to the new table + * @param string $tabname table-name + * @param string $flds column-name and type for the changed column + * @param string $tableflds complete defintion of the new table, eg. for postgres, default '' + * @param array/ $tableoptions options for the new table see CreateTableSQL, default '' + * @return array with SQL strings + */ + /* + function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') + { + if (!$tableflds) { + if ($this->debug) ADOConnection::outp("AlterColumnSQL needs a complete table-definiton for PostgreSQL"); + return array(); + } + return $this->_recreate_copy_table($tabname,False,$tableflds,$tableoptions); + }*/ + + function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') + { + // Check if alter single column datatype available - works with 8.0+ + $has_alter_column = 8.0 <= (float) @$this->serverInfo['version']; + + if ($has_alter_column) { + $tabname = $this->TableName($tabname); + $sql = array(); + list($lines,$pkey) = $this->_GenFields($flds); + $set_null = false; + foreach($lines as $v) { + $alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' '; + if ($not_null = preg_match('/NOT NULL/i',$v)) { + $v = preg_replace('/NOT NULL/i','',$v); + } + // this next block doesn't work - there is no way that I can see to + // explicitly ask a column to be null using $flds + else if ($set_null = preg_match('/NULL/i',$v)) { + // if they didn't specify not null, see if they explicitely asked for null + // Lookbehind pattern covers the case 'fieldname NULL datatype DEFAULT NULL' + // only the first NULL should be removed, not the one specifying + // the default value + $v = preg_replace('/(?<!DEFAULT)\sNULL/i','',$v); + } + + if (preg_match('/^([^ ]+) .*DEFAULT (\'[^\']+\'|\"[^\"]+\"|[^ ]+)/',$v,$matches)) { + $existing = $this->MetaColumns($tabname); + list(,$colname,$default) = $matches; + $alter .= $colname; + if ($this->connection) { + $old_coltype = $this->connection->MetaType($existing[strtoupper($colname)]); + } + else { + $old_coltype = $t; + } + $v = preg_replace('/^' . preg_quote($colname) . '\s/', '', $v); + $t = trim(str_replace('DEFAULT '.$default,'',$v)); + + // Type change from bool to int + if ( $old_coltype == 'L' && $t == 'INTEGER' ) { + $sql[] = $alter . ' DROP DEFAULT'; + $sql[] = $alter . " TYPE $t USING ($colname::BOOL)::INT"; + $sql[] = $alter . " SET DEFAULT $default"; + } + // Type change from int to bool + else if ( $old_coltype == 'I' && $t == 'BOOLEAN' ) { + if( strcasecmp('NULL', trim($default)) != 0 ) { + $default = $this->connection->qstr($default); + } + $sql[] = $alter . ' DROP DEFAULT'; + $sql[] = $alter . " TYPE $t USING CASE WHEN $colname = 0 THEN false ELSE true END"; + $sql[] = $alter . " SET DEFAULT $default"; + } + // Any other column types conversion + else { + $sql[] = $alter . " TYPE $t"; + $sql[] = $alter . " SET DEFAULT $default"; + } + + } + else { + // drop default? + preg_match ('/^\s*(\S+)\s+(.*)$/',$v,$matches); + list (,$colname,$rest) = $matches; + $alter .= $colname; + $sql[] = $alter . ' TYPE ' . $rest; + } + +# list($colname) = explode(' ',$v); + if ($not_null) { + // this does not error out if the column is already not null + $sql[] = $alter . ' SET NOT NULL'; + } + if ($set_null) { + // this does not error out if the column is already null + $sql[] = $alter . ' DROP NOT NULL'; + } + } + return $sql; + } + + // does not have alter column + if (!$tableflds) { + if ($this->debug) ADOConnection::outp("AlterColumnSQL needs a complete table-definiton for PostgreSQL"); + return array(); + } + return $this->_recreate_copy_table($tabname,False,$tableflds,$tableoptions); + } + + /** + * Drop one column + * + * Postgres < 7.3 can't do that on it's own, you need to supply the complete defintion of the new table, + * to allow, recreating the table and copying the content over to the new table + * @param string $tabname table-name + * @param string $flds column-name and type for the changed column + * @param string $tableflds complete defintion of the new table, eg. for postgres, default '' + * @param array/ $tableoptions options for the new table see CreateTableSQL, default '' + * @return array with SQL strings + */ + function DropColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') + { + $has_drop_column = 7.3 <= (float) @$this->serverInfo['version']; + if (!$has_drop_column && !$tableflds) { + if ($this->debug) ADOConnection::outp("DropColumnSQL needs complete table-definiton for PostgreSQL < 7.3"); + return array(); + } + if ($has_drop_column) { + return ADODB_DataDict::DropColumnSQL($tabname, $flds); + } + return $this->_recreate_copy_table($tabname,$flds,$tableflds,$tableoptions); + } + + /** + * Save the content into a temp. table, drop and recreate the original table and copy the content back in + * + * We also take care to set the values of the sequenz and recreate the indexes. + * All this is done in a transaction, to not loose the content of the table, if something went wrong! + * @internal + * @param string $tabname table-name + * @param string $dropflds column-names to drop + * @param string $tableflds complete defintion of the new table, eg. for postgres + * @param array/string $tableoptions options for the new table see CreateTableSQL, default '' + * @return array with SQL strings + */ + function _recreate_copy_table($tabname,$dropflds,$tableflds,$tableoptions='') + { + if ($dropflds && !is_array($dropflds)) $dropflds = explode(',',$dropflds); + $copyflds = array(); + foreach($this->MetaColumns($tabname) as $fld) { + if (!$dropflds || !in_array($fld->name,$dropflds)) { + // we need to explicit convert varchar to a number to be able to do an AlterColumn of a char column to a nummeric one + if (preg_match('/'.$fld->name.' (I|I2|I4|I8|N|F)/i',$tableflds,$matches) && + in_array($fld->type,array('varchar','char','text','bytea'))) { + $copyflds[] = "to_number($fld->name,'S9999999999999D99')"; + } else { + $copyflds[] = $fld->name; + } + // identify the sequence name and the fld its on + if ($fld->primary_key && $fld->has_default && + preg_match("/nextval\('([^']+)'::text\)/",$fld->default_value,$matches)) { + $seq_name = $matches[1]; + $seq_fld = $fld->name; + } + } + } + $copyflds = implode(', ',$copyflds); + + $tempname = $tabname.'_tmp'; + $aSql[] = 'BEGIN'; // we use a transaction, to make sure not to loose the content of the table + $aSql[] = "SELECT * INTO TEMPORARY TABLE $tempname FROM $tabname"; + $aSql = array_merge($aSql,$this->DropTableSQL($tabname)); + $aSql = array_merge($aSql,$this->CreateTableSQL($tabname,$tableflds,$tableoptions)); + $aSql[] = "INSERT INTO $tabname SELECT $copyflds FROM $tempname"; + if ($seq_name && $seq_fld) { // if we have a sequence we need to set it again + $seq_name = $tabname.'_'.$seq_fld.'_seq'; // has to be the name of the new implicit sequence + $aSql[] = "SELECT setval('$seq_name',MAX($seq_fld)) FROM $tabname"; + } + $aSql[] = "DROP TABLE $tempname"; + // recreate the indexes, if they not contain one of the droped columns + foreach($this->MetaIndexes($tabname) as $idx_name => $idx_data) + { + if (substr($idx_name,-5) != '_pkey' && (!$dropflds || !count(array_intersect($dropflds,$idx_data['columns'])))) { + $aSql = array_merge($aSql,$this->CreateIndexSQL($idx_name,$tabname,$idx_data['columns'], + $idx_data['unique'] ? array('UNIQUE') : False)); + } + } + $aSql[] = 'COMMIT'; + return $aSql; + } + + function DropTableSQL($tabname) + { + $sql = ADODB_DataDict::DropTableSQL($tabname); + + $drop_seq = $this->_DropAutoIncrement($tabname); + if ($drop_seq) $sql[] = $drop_seq; + + return $sql; + } + + // return string must begin with space + function _CreateSuffix($fname, &$ftype, $fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned) + { + if ($fautoinc) { + $ftype = 'SERIAL'; + return ''; + } + $suffix = ''; + if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault"; + if ($fnotnull) $suffix .= ' NOT NULL'; + if ($fconstraint) $suffix .= ' '.$fconstraint; + return $suffix; + } + + // search for a sequece for the given table (asumes the seqence-name contains the table-name!) + // if yes return sql to drop it + // this is still necessary if postgres < 7.3 or the SERIAL was created on an earlier version!!! + function _DropAutoIncrement($tabname) + { + $tabname = $this->connection->quote('%'.$tabname.'%'); + + $seq = $this->connection->GetOne("SELECT relname FROM pg_class WHERE NOT relname ~ 'pg_.*' AND relname LIKE $tabname AND relkind='S'"); + + // check if a tables depends on the sequenz and it therefor cant and dont need to be droped separatly + if (!$seq || $this->connection->GetOne("SELECT relname FROM pg_class JOIN pg_depend ON pg_class.relfilenode=pg_depend.objid WHERE relname='$seq' AND relkind='S' AND deptype='i'")) { + return False; + } + return "DROP SEQUENCE ".$seq; + } + + function RenameTableSQL($tabname,$newname) + { + if (!empty($this->schema)) { + $rename_from = $this->TableName($tabname); + $schema_save = $this->schema; + $this->schema = false; + $rename_to = $this->TableName($newname); + $this->schema = $schema_save; + return array (sprintf($this->renameTable, $rename_from, $rename_to)); + } + + return array (sprintf($this->renameTable, $this->TableName($tabname),$this->TableName($newname))); + } + + /* + CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name ( + { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ] + | table_constraint } [, ... ] + ) + [ INHERITS ( parent_table [, ... ] ) ] + [ WITH OIDS | WITHOUT OIDS ] + where column_constraint is: + [ CONSTRAINT constraint_name ] + { NOT NULL | NULL | UNIQUE | PRIMARY KEY | + CHECK (expression) | + REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ] + [ ON DELETE action ] [ ON UPDATE action ] } + [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] + and table_constraint is: + [ CONSTRAINT constraint_name ] + { UNIQUE ( column_name [, ... ] ) | + PRIMARY KEY ( column_name [, ... ] ) | + CHECK ( expression ) | + FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ] + [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] } + [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ] + */ + + + /* + CREATE [ UNIQUE ] INDEX index_name ON table +[ USING acc_method ] ( column [ ops_name ] [, ...] ) +[ WHERE predicate ] +CREATE [ UNIQUE ] INDEX index_name ON table +[ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] ) +[ WHERE predicate ] + */ + function _IndexSQL($idxname, $tabname, $flds, $idxoptions) + { + $sql = array(); + + if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) { + $sql[] = sprintf ($this->dropIndex, $idxname, $tabname); + if ( isset($idxoptions['DROP']) ) + return $sql; + } + + if ( empty ($flds) ) { + return $sql; + } + + $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : ''; + + $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' '; + + if (isset($idxoptions['HASH'])) + $s .= 'USING HASH '; + + if ( isset($idxoptions[$this->upperName]) ) + $s .= $idxoptions[$this->upperName]; + + if ( is_array($flds) ) + $flds = implode(', ',$flds); + $s .= '(' . $flds . ')'; + $sql[] = $s; + + return $sql; + } + + function _GetSize($ftype, $ty, $fsize, $fprec) + { + if (strlen($fsize) && $ty != 'X' && $ty != 'B' && $ty != 'I' && strpos($ftype,'(') === false) { + $ftype .= "(".$fsize; + if (strlen($fprec)) $ftype .= ",".$fprec; + $ftype .= ')'; + } + return $ftype; + } +} |