forked from GNUsocial/gnu-social
632 lines
24 KiB
PHP
632 lines
24 KiB
PHP
<?php
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require_once 'MDB2/Driver/Reverse/Common.php';
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/**
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* MDB2 MSSQL driver for the schema reverse engineering module
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@dybnet.de>
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* @author Lorenzo Alberton <l.alberton@quipo.it>
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*/
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class MDB2_Driver_Reverse_odbc extends MDB2_Driver_Reverse_Common
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{
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// {{{ getTableFieldDefinition()
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/**
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* Get the structure of a field into an array
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*
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* @param string $table_name name of table that should be used in method
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* @param string $field_name name of field that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableFieldDefinition($table_name, $field_name)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$result = $db->loadModule('Datatype', null, true);
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if (MDB2::isError($result)) {
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return $result;
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}
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list($schema, $table) = $this->splitTableSchema($table_name);
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$table = $db->quoteIdentifier($table, true);
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$fldname = $db->quoteIdentifier($field_name, true);
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$res = odbc_columns($db->connection,"%","%",$table);
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$column = array();
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while($data = odbc_fetch_array($res)) {
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if(strcasecmp($field_name,$data['COLUMN_NAME'])) {
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$column['table_name'] = $data['TABLE_NAME'];
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$column['name'] = $data['COLUMN_NAME'];
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$column['type'] = $data['TYPE_NAME'];
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if($data['IS_NULLABLE'] == "YES") {
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$column['is_nullable'] = 1;
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} else {
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$column['is_nullable'] = 0;
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}
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$column['column_default'] = $data['COLUMN_DEF'];
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$column['length'] = $data['COLUMNZ_SIZE'];
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$column['numeric_precision'] = $data['NUM_PREC_RADIX'];
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$column['numeric_scale'] = $data['DECIMAL_DIGITS'];
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$column['collation_name'] = NULL;
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}
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}
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/*
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$query = "SELECT t.table_name,
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c.column_name 'name',
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c.data_type 'type',
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CASE c.is_nullable WHEN 'YES' THEN 1 ELSE 0 END AS 'is_nullable',
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c.column_default,
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c.character_maximum_length 'length',
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c.numeric_precision,
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c.numeric_scale,
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c.character_set_name,
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c.collation_name
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FROM INFORMATION_SCHEMA.TABLES t,
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INFORMATION_SCHEMA.COLUMNS c
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WHERE t.table_name = c.table_name
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AND t.table_name = '$table'
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AND c.column_name = '$fldname'";
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if (!empty($schema)) {
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$query .= " AND t.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
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}
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$query .= ' ORDER BY t.table_name';
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$column = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
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if (MDB2::isError($column)) {
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return $column;
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}
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*/
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if (empty($column)) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table column', __FUNCTION__);
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column['name'] = strtolower($column['name']);
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} else {
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$column['name'] = strtoupper($column['name']);
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}
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} else {
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$column = array_change_key_case($column, $db->options['field_case']);
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}
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$mapped_datatype = $db->datatype->mapNativeDatatype($column);
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if (MDB2::isError($mapped_datatype)) {
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return $mapped_datatype;
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}
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list($types, $length, $unsigned, $fixed) = $mapped_datatype;
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$notnull = true;
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if ($column['is_nullable']) {
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$notnull = false;
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}
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$default = false;
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if (array_key_exists('column_default', $column)) {
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$default = $column['column_default'];
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if (is_null($default) && $notnull) {
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$default = '';
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} elseif (strlen($default) > 4
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&& substr($default, 0, 1) == '('
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&& substr($default, -1, 1) == ')'
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) {
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//mssql wraps the default value in parentheses: "((1234))", "(NULL)"
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$default = trim($default, '()');
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if ($default == 'NULL') {
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$default = null;
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}
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}
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}
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$definition[0] = array(
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'notnull' => $notnull,
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'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
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);
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if (!is_null($length)) {
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$definition[0]['length'] = $length;
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}
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if (!is_null($unsigned)) {
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$definition[0]['unsigned'] = $unsigned;
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}
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if (!is_null($fixed)) {
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$definition[0]['fixed'] = $fixed;
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}
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if ($default !== false) {
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$definition[0]['default'] = $default;
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}
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foreach ($types as $key => $type) {
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$definition[$key] = $definition[0];
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if ($type == 'clob' || $type == 'blob') {
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unset($definition[$key]['default']);
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}
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$definition[$key]['type'] = $type;
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$definition[$key]['mdb2type'] = $type;
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}
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return $definition;
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}
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// }}}
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// {{{ getTableIndexDefinition()
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/**
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* Get the structure of an index into an array
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*
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* @param string $table_name name of table that should be used in method
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* @param string $index_name name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableIndexDefinition($table_name, $index_name)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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list($schema, $table) = $this->splitTableSchema($table_name);
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$table = $db->quoteIdentifier($table, true);
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//$idxname = $db->quoteIdentifier($index_name, true);
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$query = "SELECT OBJECT_NAME(i.id) tablename,
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i.name indexname,
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c.name field_name,
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CASE INDEXKEY_PROPERTY(i.id, i.indid, ik.keyno, 'IsDescending')
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WHEN 1 THEN 'DESC' ELSE 'ASC'
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END 'collation',
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ik.keyno 'position'
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FROM sysindexes i
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JOIN sysindexkeys ik ON ik.id = i.id AND ik.indid = i.indid
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JOIN syscolumns c ON c.id = ik.id AND c.colid = ik.colid
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WHERE OBJECT_NAME(i.id) = '$table'
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AND i.name = '%s'
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AND NOT EXISTS (
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SELECT *
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
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WHERE k.table_name = OBJECT_NAME(i.id)
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AND k.constraint_name = i.name";
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if (!empty($schema)) {
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$query .= " AND k.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
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}
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$query .= ')
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ORDER BY tablename, indexname, ik.keyno';
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$index_name_mdb2 = $db->getIndexName($index_name);
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$result = $db->queryRow(sprintf($query, $index_name_mdb2));
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if (!MDB2::isError($result) && !is_null($result)) {
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// apply 'idxname_format' only if the query succeeded, otherwise
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// fallback to the given $index_name, without transformation
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$index_name = $index_name_mdb2;
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}
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$result = $db->query(sprintf($query, $index_name));
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if (MDB2::isError($result)) {
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return $result;
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}
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$definition = array();
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while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
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$column_name = $row['field_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column_name = strtolower($column_name);
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} else {
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$column_name = strtoupper($column_name);
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}
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}
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$definition['fields'][$column_name] = array(
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'position' => (int)$row['position'],
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);
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if (!empty($row['collation'])) {
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$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
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? 'ascending' : 'descending');
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}
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}
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$result->free();
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if (empty($definition['fields'])) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table index', __FUNCTION__);
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}
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return $definition;
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}
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// }}}
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// {{{ getTableConstraintDefinition()
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/**
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* Get the structure of a constraint into an array
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*
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* @param string $table_name name of table that should be used in method
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* @param string $constraint_name name of constraint that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableConstraintDefinition($table_name, $constraint_name)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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list($schema, $table) = $this->splitTableSchema($table_name);
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$table = $db->quoteIdentifier($table, true);
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$query = "SELECT k.table_name,
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k.column_name field_name,
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CASE c.constraint_type WHEN 'PRIMARY KEY' THEN 1 ELSE 0 END 'primary',
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CASE c.constraint_type WHEN 'UNIQUE' THEN 1 ELSE 0 END 'unique',
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CASE c.constraint_type WHEN 'FOREIGN KEY' THEN 1 ELSE 0 END 'foreign',
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CASE c.constraint_type WHEN 'CHECK' THEN 1 ELSE 0 END 'check',
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CASE c.is_deferrable WHEN 'NO' THEN 0 ELSE 1 END 'deferrable',
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CASE c.initially_deferred WHEN 'NO' THEN 0 ELSE 1 END 'initiallydeferred',
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rc.match_option 'match',
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rc.update_rule 'onupdate',
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rc.delete_rule 'ondelete',
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kcu.table_name 'references_table',
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kcu.column_name 'references_field',
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k.ordinal_position 'field_position'
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
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LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
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ON k.table_name = c.table_name
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AND k.table_schema = c.table_schema
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AND k.table_catalog = c.table_catalog
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AND k.constraint_catalog = c.constraint_catalog
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AND k.constraint_name = c.constraint_name
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LEFT JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS rc
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ON rc.constraint_schema = c.constraint_schema
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AND rc.constraint_catalog = c.constraint_catalog
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AND rc.constraint_name = c.constraint_name
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LEFT JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE kcu
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ON rc.unique_constraint_schema = kcu.constraint_schema
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AND rc.unique_constraint_catalog = kcu.constraint_catalog
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AND rc.unique_constraint_name = kcu.constraint_name
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AND k.ordinal_position = kcu.ordinal_position
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WHERE k.constraint_catalog = DB_NAME()
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AND k.table_name = '$table'
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AND k.constraint_name = '%s'";
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if (!empty($schema)) {
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$query .= " AND k.table_schema = '" .$db->quoteIdentifier($schema, true) ."'";
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}
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$query .= ' ORDER BY k.constraint_name,
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k.ordinal_position';
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$constraint_name_mdb2 = $db->getIndexName($constraint_name);
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$result = $db->queryRow(sprintf($query, $constraint_name_mdb2));
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if (!MDB2::isError($result) && !is_null($result)) {
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// apply 'idxname_format' only if the query succeeded, otherwise
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// fallback to the given $index_name, without transformation
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$constraint_name = $constraint_name_mdb2;
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}
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$result = $db->query(sprintf($query, $constraint_name));
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if (MDB2::isError($result)) {
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return $result;
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}
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$definition = array(
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'fields' => array()
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);
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while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
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$row = array_change_key_case($row, CASE_LOWER);
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$column_name = $row['field_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column_name = strtolower($column_name);
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} else {
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$column_name = strtoupper($column_name);
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}
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}
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$definition['fields'][$column_name] = array(
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'position' => (int)$row['field_position']
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);
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if ($row['foreign']) {
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$ref_column_name = $row['references_field'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$ref_column_name = strtolower($ref_column_name);
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} else {
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$ref_column_name = strtoupper($ref_column_name);
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}
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}
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$definition['references']['table'] = $row['references_table'];
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$definition['references']['fields'][$ref_column_name] = array(
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'position' => (int)$row['field_position']
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);
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}
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//collation?!?
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/*
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if (!empty($row['collation'])) {
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$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
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? 'ascending' : 'descending');
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}
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*/
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$lastrow = $row;
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// otherwise $row is no longer usable on exit from loop
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}
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$result->free();
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if (empty($definition['fields'])) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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$constraint_name . ' is not an existing table constraint', __FUNCTION__);
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}
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$definition['primary'] = (boolean)$lastrow['primary'];
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$definition['unique'] = (boolean)$lastrow['unique'];
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$definition['foreign'] = (boolean)$lastrow['foreign'];
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$definition['check'] = (boolean)$lastrow['check'];
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$definition['deferrable'] = (boolean)$lastrow['deferrable'];
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$definition['initiallydeferred'] = (boolean)$lastrow['initiallydeferred'];
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$definition['onupdate'] = $lastrow['onupdate'];
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$definition['ondelete'] = $lastrow['ondelete'];
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$definition['match'] = $lastrow['match'];
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return $definition;
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}
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// }}}
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// {{{ getTriggerDefinition()
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/**
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* Get the structure of a trigger into an array
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*
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* EXPERIMENTAL
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*
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* WARNING: this function is experimental and may change the returned value
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* at any time until labelled as non-experimental
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*
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* @param string $trigger name of trigger that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTriggerDefinition($trigger)
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{
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$query = "SELECT sys1.name trigger_name,
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sys2.name table_name,
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c.text trigger_body,
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c.encrypted is_encripted,
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CASE
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WHEN OBJECTPROPERTY(sys1.id, 'ExecIsTriggerDisabled') = 1
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THEN 0 ELSE 1
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END trigger_enabled,
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CASE
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WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsertTrigger') = 1
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THEN 'INSERT'
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WHEN OBJECTPROPERTY(sys1.id, 'ExecIsUpdateTrigger') = 1
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THEN 'UPDATE'
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WHEN OBJECTPROPERTY(sys1.id, 'ExecIsDeleteTrigger') = 1
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THEN 'DELETE'
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END trigger_event,
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CASE WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsteadOfTrigger') = 1
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THEN 'INSTEAD OF' ELSE 'AFTER'
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END trigger_type,
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'' trigger_comment
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FROM sysobjects sys1
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JOIN sysobjects sys2 ON sys1.parent_obj = sys2.id
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JOIN syscomments c ON sys1.id = c.id
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WHERE sys1.xtype = 'TR'
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AND sys1.name = ". $db->quote($trigger, 'text');
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$types = array(
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'trigger_name' => 'text',
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'table_name' => 'text',
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'trigger_body' => 'text',
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'trigger_type' => 'text',
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'trigger_event' => 'text',
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'trigger_comment' => 'text',
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'trigger_enabled' => 'boolean',
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'is_encripted' => 'boolean',
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);
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$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
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if (MDB2::isError($def)) {
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return $def;
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}
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$trg_body = $db->queryCol('EXEC sp_helptext '. $db->quote($trigger, 'text'), 'text');
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if (!MDB2::isError($trg_body)) {
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$def['trigger_body'] = implode(' ', $trg_body);
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}
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return $def;
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}
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// }}}
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// {{{ tableInfo()
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/**
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* Returns information about a table or a result set
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*
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* NOTE: only supports 'table' and 'flags' if <var>$result</var>
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* is a table name.
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*
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* @param object|string $result MDB2_result object from a query or a
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* string containing the name of a table.
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* While this also accepts a query result
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* resource identifier, this behavior is
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* deprecated.
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* @param int $mode a valid tableInfo mode
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*
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* @return array an associative array with the information requested.
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* A MDB2_Error object on failure.
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*
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* @see MDB2_Driver_Common::tableInfo()
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*/
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function tableInfo($result, $mode = null)
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{
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if (is_string($result)) {
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return parent::tableInfo($result, $mode);
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}
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$db =& $this->getDBInstance();
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if (MDB2::isError($db)) {
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return $db;
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}
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$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
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if (!is_resource($resource)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
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'Could not generate result resource', __FUNCTION__);
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}
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|
|
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
|
|
if ($db->options['field_case'] == CASE_LOWER) {
|
|
$case_func = 'strtolower';
|
|
} else {
|
|
$case_func = 'strtoupper';
|
|
}
|
|
} else {
|
|
$case_func = 'strval';
|
|
}
|
|
|
|
$count = @mssql_num_fields($resource);
|
|
$res = array();
|
|
|
|
if ($mode) {
|
|
$res['num_fields'] = $count;
|
|
}
|
|
|
|
$db->loadModule('Datatype', null, true);
|
|
for ($i = 0; $i < $count; $i++) {
|
|
$res[$i] = array(
|
|
'table' => '',
|
|
'name' => $case_func(@mssql_field_name($resource, $i)),
|
|
'type' => @mssql_field_type($resource, $i),
|
|
'length' => @mssql_field_length($resource, $i),
|
|
'flags' => '',
|
|
);
|
|
$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
|
|
if (MDB2::isError($mdb2type_info)) {
|
|
return $mdb2type_info;
|
|
}
|
|
$res[$i]['mdb2type'] = $mdb2type_info[0][0];
|
|
if ($mode & MDB2_TABLEINFO_ORDER) {
|
|
$res['order'][$res[$i]['name']] = $i;
|
|
}
|
|
if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
|
}
|
|
}
|
|
|
|
return $res;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _mssql_field_flags()
|
|
|
|
/**
|
|
* Get a column's flags
|
|
*
|
|
* Supports "not_null", "primary_key",
|
|
* "auto_increment" (mssql identity), "timestamp" (mssql timestamp),
|
|
* "unique_key" (mssql unique index, unique check or primary_key) and
|
|
* "multiple_key" (multikey index)
|
|
*
|
|
* mssql timestamp is NOT similar to the mysql timestamp so this is maybe
|
|
* not useful at all - is the behaviour of mysql_field_flags that primary
|
|
* keys are alway unique? is the interpretation of multiple_key correct?
|
|
*
|
|
* @param string $table the table name
|
|
* @param string $column the field name
|
|
*
|
|
* @return string the flags
|
|
*
|
|
* @access protected
|
|
* @author Joern Barthel <j_barthel@web.de>
|
|
*/
|
|
function _mssql_field_flags($table, $column)
|
|
{
|
|
$db =& $this->getDBInstance();
|
|
if (MDB2::isError($db)) {
|
|
return $db;
|
|
}
|
|
|
|
static $tableName = null;
|
|
static $flags = array();
|
|
|
|
if ($table != $tableName) {
|
|
|
|
$flags = array();
|
|
$tableName = $table;
|
|
|
|
// get unique and primary keys
|
|
$res = $db->queryAll("EXEC SP_HELPINDEX[$table]", null, MDB2_FETCHMODE_ASSOC);
|
|
|
|
foreach ($res as $val) {
|
|
$val = array_change_key_case($val, CASE_LOWER);
|
|
$keys = explode(', ', $val['index_keys']);
|
|
|
|
if (sizeof($keys) > 1) {
|
|
foreach ($keys as $key) {
|
|
$this->_add_flag($flags[$key], 'multiple_key');
|
|
}
|
|
}
|
|
|
|
if (strpos($val['index_description'], 'primary key')) {
|
|
foreach ($keys as $key) {
|
|
$this->_add_flag($flags[$key], 'primary_key');
|
|
}
|
|
} elseif (strpos($val['index_description'], 'unique')) {
|
|
foreach ($keys as $key) {
|
|
$this->_add_flag($flags[$key], 'unique_key');
|
|
}
|
|
}
|
|
}
|
|
|
|
// get auto_increment, not_null and timestamp
|
|
$res = $db->queryAll("EXEC SP_COLUMNS[$table]", null, MDB2_FETCHMODE_ASSOC);
|
|
|
|
foreach ($res as $val) {
|
|
$val = array_change_key_case($val, CASE_LOWER);
|
|
if ($val['nullable'] == '0') {
|
|
$this->_add_flag($flags[$val['column_name']], 'not_null');
|
|
}
|
|
if (strpos($val['type_name'], 'identity')) {
|
|
$this->_add_flag($flags[$val['column_name']], 'auto_increment');
|
|
}
|
|
if (strpos($val['type_name'], 'timestamp')) {
|
|
$this->_add_flag($flags[$val['column_name']], 'timestamp');
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!empty($flags[$column])) {
|
|
return(implode(' ', $flags[$column]));
|
|
}
|
|
return '';
|
|
}
|
|
|
|
// }}}
|
|
// {{{ _add_flag()
|
|
|
|
/**
|
|
* Adds a string to the flags array if the flag is not yet in there
|
|
* - if there is no flag present the array is created
|
|
*
|
|
* @param array &$array the reference to the flag-array
|
|
* @param string $value the flag value
|
|
*
|
|
* @return void
|
|
*
|
|
* @access protected
|
|
* @author Joern Barthel <j_barthel@web.de>
|
|
*/
|
|
function _add_flag(&$array, $value)
|
|
{
|
|
if (!is_array($array)) {
|
|
$array = array($value);
|
|
} elseif (!in_array($value, $array)) {
|
|
array_push($array, $value);
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
}
|
|
?>
|