320 lines
8.4 KiB
PHP
320 lines
8.4 KiB
PHP
<?php
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/**
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V4.80 8 Mar 2006 (c) 2000-2006 John Lim (jlim@natsoft.com.my). All rights reserved.
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Released under both BSD license and Lesser GPL library license.
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Whenever there is any discrepancy between the two licenses,
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the BSD license will take precedence.
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Set tabs to 4 for best viewing.
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*/
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// security - hide paths
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if (!defined('ADODB_DIR')) die();
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class ADODB2_mysql extends ADODB_DataDict {
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var $databaseType = 'mysql';
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var $alterCol = ' MODIFY COLUMN';
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var $alterTableAddIndex = true;
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var $dropTable = 'DROP TABLE IF EXISTS %s'; // requires mysql 3.22 or later
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var $dropIndex = 'DROP INDEX %s ON %s';
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var $renameColumn = 'ALTER TABLE %s CHANGE COLUMN %s %s %s'; // needs column-definition!
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var $metaColumnsSQL = "SHOW COLUMNS FROM %s";
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function MetaType($t,$len=-1,$fieldobj=false)
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{
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if (is_object($t)) {
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$fieldobj = $t;
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$t = $fieldobj->type;
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$len = $fieldobj->max_length;
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}
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$is_serial = is_object($fieldobj) && $fieldobj->primary_key && $fieldobj->auto_increment;
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$len = -1; // mysql max_length is not accurate
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switch (strtoupper($t)) {
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case 'STRING':
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case 'CHAR':
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case 'VARCHAR':
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case 'TINYBLOB':
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case 'TINYTEXT':
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case 'ENUM':
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case 'SET':
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if ($len <= $this->blobSize) return 'C';
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case 'TEXT':
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case 'LONGTEXT':
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case 'MEDIUMTEXT':
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return 'X';
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// php_mysql extension always returns 'blob' even if 'text'
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// so we have to check whether binary...
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case 'IMAGE':
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case 'LONGBLOB':
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case 'BLOB':
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case 'MEDIUMBLOB':
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return !empty($fieldobj->binary) ? 'B' : 'X';
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case 'YEAR':
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case 'DATE': return 'D';
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case 'TIME':
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case 'DATETIME':
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case 'TIMESTAMP': return 'T';
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case 'FLOAT':
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case 'DOUBLE':
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return 'F';
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case 'INT':
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case 'INTEGER': return $is_serial ? 'R' : 'I';
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case 'TINYINT': return $is_serial ? 'R' : 'I1';
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case 'SMALLINT': return $is_serial ? 'R' : 'I2';
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case 'MEDIUMINT': return $is_serial ? 'R' : 'I4';
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case 'BIGINT': return $is_serial ? 'R' : 'I8';
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default: return 'N';
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}
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}
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function ActualType($meta)
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{
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switch(strtoupper($meta)) {
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case 'C': return 'VARCHAR';
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case 'XL':return 'LONGTEXT';
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case 'X': return 'TEXT';
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case 'C2': return 'VARCHAR';
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case 'X2': return 'LONGTEXT';
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case 'B': return 'LONGBLOB';
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case 'D': return 'DATE';
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case 'T': return 'DATETIME';
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case 'L': return 'TINYINT';
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case 'R':
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case 'I4':
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case 'I': return 'INTEGER';
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case 'I1': return 'TINYINT';
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case 'I2': return 'SMALLINT';
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case 'I8': return 'BIGINT';
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case 'F': return 'DOUBLE';
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case 'N': return 'NUMERIC';
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default:
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return $meta;
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}
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}
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// return string must begin with space
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function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned = null)
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{
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$suffix = '';
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if ($funsigned) $suffix .= ' UNSIGNED';
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if ($fnotnull) $suffix .= ' NOT NULL';
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if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
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if ($fautoinc) $suffix .= ' AUTO_INCREMENT';
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if ($fconstraint) $suffix .= ' '.$fconstraint;
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return $suffix;
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}
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/*
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CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name [(create_definition,...)]
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[table_options] [select_statement]
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create_definition:
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col_name type [NOT NULL | NULL] [DEFAULT default_value] [AUTO_INCREMENT]
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[PRIMARY KEY] [reference_definition]
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or PRIMARY KEY (index_col_name,...)
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or KEY [index_name] (index_col_name,...)
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or INDEX [index_name] (index_col_name,...)
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or UNIQUE [INDEX] [index_name] (index_col_name,...)
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or FULLTEXT [INDEX] [index_name] (index_col_name,...)
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or [CONSTRAINT symbol] FOREIGN KEY [index_name] (index_col_name,...)
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[reference_definition]
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or CHECK (expr)
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*/
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/*
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CREATE [UNIQUE|FULLTEXT] INDEX index_name
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ON tbl_name (col_name[(length)],... )
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*/
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function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
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{
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$sql = array();
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if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
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if ($this->alterTableAddIndex) $sql[] = "ALTER TABLE $tabname DROP INDEX $idxname";
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else $sql[] = sprintf($this->dropIndex, $idxname, $tabname);
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if ( isset($idxoptions['DROP']) )
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return $sql;
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}
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if ( empty ($flds) ) {
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return $sql;
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}
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if (isset($idxoptions['FULLTEXT'])) {
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$unique = ' FULLTEXT';
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} elseif (isset($idxoptions['UNIQUE'])) {
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$unique = ' UNIQUE';
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} else {
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$unique = '';
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}
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if ( is_array($flds) ) $flds = implode(', ',$flds);
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if ($this->alterTableAddIndex) $s = "ALTER TABLE $tabname ADD $unique INDEX $idxname ";
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else $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname;
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$s .= ' (' . $flds . ')';
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if ( isset($idxoptions[$this->upperName]) )
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$s .= $idxoptions[$this->upperName];
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$sql[] = $s;
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return $sql;
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}
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/**
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* @param ttype can either be 'VIEW' or 'TABLE' or false.
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* If false, both views and tables are returned.
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* "VIEW" returns only views
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* "TABLE" returns only tables
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* @param showSchema returns the schema/user with the table name, eg. USER.TABLE
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* @param mask is the input mask - only supported by oci8 and postgresql
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*
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* @return array of tables for current database.
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*/
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function &MetaTables($ttype=false,$showSchema=false,$mask=false)
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{
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$save = $this->metaTablesSQL;
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if ($showSchema && is_string($showSchema)) {
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$this->metaTablesSQL .= " from $showSchema";
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}
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if ($mask) {
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$mask = $this->connection->qstr($mask);
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$this->metaTablesSQL .= " like $mask";
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}
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$ret =& $this->_MetaTables($ttype,$showSchema);
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$this->metaTablesSQL = $save;
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return $ret;
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}
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function &_MetaTables($ttype=false,$showSchema=false,$mask=false)
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{
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$false = false;
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if ($mask) {
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return $false;
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}
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if ($this->metaTablesSQL) {
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$rs = $this->connection->query($this->metaTablesSQL);
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$arr =& $rs->fetchAll(PDO::FETCH_NUM);
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$arr2 = array();
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if ($hast = ($ttype && isset($arr[0][1]))) {
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$showt = strncmp($ttype,'T',1);
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}
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for ($i=0; $i < sizeof($arr); $i++) {
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if ($hast) {
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if ($showt == 0) {
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if (strncmp($arr[$i][1],'T',1) == 0) $arr2[] = trim($arr[$i][0]);
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} else {
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if (strncmp($arr[$i][1],'V',1) == 0) $arr2[] = trim($arr[$i][0]);
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}
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} else
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$arr2[] = trim($arr[$i][0]);
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}
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$rs->closeCursor();
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return $arr2;
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}
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return $false;
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}
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/**
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* List columns in a database as an array of ADOFieldObjects.
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* See top of file for definition of object.
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*
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* @param table table name to query
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* @param upper uppercase table name (required by some databases)
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* @schema is optional database schema to use - not supported by all databases.
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*
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* @return array of ADOFieldObjects for current table.
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*/
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function MetaColumns($table, $upper = true, $schema = false)
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{
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$this->_findschema($table,$schema);
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if ($schema) {
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$dbName = $this->database;
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$this->connection->SelectDB($schema);
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}
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$stmt = $this->connection->query(sprintf($this->metaColumnsSQL,$table));
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if ($schema) {
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$this->connection->SelectDB($dbName);
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}
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$retarr = array();
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while ($rs = $stmt->fetch(PDO::FETCH_NUM)){
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print_r($rs);
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$fld = new ADOFieldObject();
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$fld->name = $rs[0];
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$type = $rs[1];
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// split type into type(length):
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$fld->scale = null;
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if (preg_match("/^(.+)\((\d+),(\d+)/", $type, $query_array)) {
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$fld->type = $query_array[1];
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$fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
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$fld->scale = is_numeric($query_array[3]) ? $query_array[3] : -1;
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} elseif (preg_match("/^(.+)\((\d+)/", $type, $query_array)) {
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$fld->type = $query_array[1];
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$fld->max_length = is_numeric($query_array[2]) ? $query_array[2] : -1;
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} elseif (preg_match("/^(enum)\((.*)\)$/i", $type, $query_array)) {
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$fld->type = $query_array[1];
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$arr = explode(",",$query_array[2]);
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$fld->enums = $arr;
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$zlen = max(array_map("strlen",$arr)) - 2; // PHP >= 4.0.6
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$fld->max_length = ($zlen > 0) ? $zlen : 1;
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} else {
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$fld->type = $type;
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$fld->max_length = -1;
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}
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$fld->not_null = ($rs[2] != 'YES');
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$fld->primary_key = ($rs[3] == 'PRI');
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$fld->auto_increment = (strpos($rs[5], 'auto_increment') !== false);
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$fld->binary = (strpos($type,'blob') !== false);
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$fld->unsigned = (strpos($type,'unsigned') !== false);
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if (!$fld->binary) {
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$d = $rs[4];
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if ($d != '' && $d != 'NULL') {
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$fld->has_default = true;
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$fld->default_value = $d;
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} else {
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$fld->has_default = false;
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}
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}
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if ($save == ADODB_FETCH_NUM) {
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$retarr[] = $fld;
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} else {
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$retarr[strtoupper($fld->name)] = $fld;
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}
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}
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$stmt->closeCursor();
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return $retarr;
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}
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}
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