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egroupware_official/phpgwapi/inc/class.schema_proc.inc.php

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<?php
/**************************************************************************\
* eGroupWare - Setup - db-schema-processor *
* http://www.egroupware.org *
* -------------------------------------------- *
* Rewritten and adopted to ADOdb's data-dictionary by Ralf Becker *
* <RalfBecker@outdoor-training.de> *
* This file was originaly written by *
* - Michael Dean <mdean@users.sourceforge.net> *
* - Miles Lott<milosch@groupwhere.org> *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
\**************************************************************************/
/* $Id$ */
/**
* eGW's ADOdb based schema-processor
*
* @class schema_proc
* @author RalfBecker-AT-outdoor-training.de and others
* @license GPL
*/
class schema_proc
{
var $m_oTranslator;
var $m_odb;
var $m_bDeltaOnly;
var $debug = 0; // 0=Off, 1=some, eg. primary function calls, 2=lots incl. the SQL used
var $max_index_length=array( // if known
'sapdb' => 32,
);
var $sType; // type of the database, set by the the constructor
var $max_varchar_length = 255; // maximum length of a varchar column, everything above get converted to text
/**
* Constructor of schema-processor
*
* @param string $dbms type of the database: 'mysql','pgsql','mssql','sapdb'
*/
function schema_proc($dbms=False)
{
$this->m_odb = is_object($GLOBALS['phpgw']->db) ? $GLOBALS['phpgw']->db : $GLOBALS['phpgw_setup']->db;
$this->m_odb->connect();
$this->sType = $dbms ? $dmbs : $this->m_odb->Type;
$this->adodb = &$GLOBALS['phpgw']->ADOdb;
$this->dict = NewDataDictionary($this->adodb);
// enable the debuging in ADOdb's datadictionary if the debug-level is greater then 1
if ($this->debug > 1) $this->dict->debug = True;
// to allow some of the former translator-functions to be called, we assign ourself as the translator
$this->m_oTranslator = &$this;
switch($this->sType)
{
case 'sapdb':
case 'maxdb':
$this->max_varchar_length = 8000;
break;
}
}
/**
* Created a table named $sTableName as defined in $aTableDef
*
* @param string $sTableName
* @param array $aTableDef
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function CreateTable($sTableName, $aTableDef)
{
if ($this->debug)
{
$this->debug_message('schema_proc::CreateTable(%1,%2)',False,$sTableName, $aTableDef);
}
// creating the table
$aSql = $this->dict->CreateTableSQL($sTableName,$ado_cols = $this->_egw2adodb_columndef($aTableDef));
if (!($retVal = $this->ExecuteSQLArray($aSql,2,'CreateTableSQL(%1,%2) sql=%3',False,$sTableName,$ado_cols,$aSql)))
{
return $retVal;
}
// creating unique indices/constrains
foreach ($aTableDef['uc'] as $name => $mFields)
{
if (is_numeric($name))
{
$name = $this->_index_name($sTableName,$mFields);
}
$aSql = $this->dict->CreateIndexSQL($name,$sTableName,$mFields,array('UNIQUE'));
if (!($retVal = $this->ExecuteSQLArray($aSql,2,'CreateIndexSql(%1,%2,%3,%4) sql=%5',False,$name,$sTableName,$mFields,array('UNIQUE'),$aSql)))
{
return $retVal;
}
}
// creation indices
foreach ($aTableDef['ix'] as $name => $mFields)
{
$options = False;
if (is_array($mFields))
{
if (isset($mFields['options'])) // array sets additional options
{
if (isset($mFields['options'][$this->sType]))
{
$options = $mFields['options'][$this->sType]; // db-specific options, eg. index-type
if (!$options) continue; // no index for our db-type
}
unset($mFields['options']);
}
}
else
{
// only create indexes on text-columns, if (db-)specifiy options are given or FULLTEXT for mysql
// most DB's cant do them and give errors
if ($aTableDef['fd'][$mFields]['type'] == 'text')
{
if ($this->sType == 'mysql')
{
$options = 'FULLTEXT';
}
else
{
continue; // ignore that index
}
}
}
if (is_numeric($name))
{
$name = $this->_index_name($sTableName,$mFields);
}
$aSql = $this->dict->CreateIndexSQL($name,$sTableName,$mFields,array($options));
if (!($retVal = $this->ExecuteSQLArray($aSql,2,'CreateIndexSql(%1,%2,%3,%4) sql=%5',False,$name,$sTableName,$mFields,$options,$aSql)))
{
return $retVal;
}
}
return $retVal;
}
/**
* Drops all tables in $aTables
*
* @param array $aTables array of eGW table-definitions
* @param boolean $bOutputHTML should we give diagnostics, default False
* @return boolean True if no error, else False
*/
function DropAllTables($aTables, $bOutputHTML=False)
{
if(!is_array($aTables) || !isset($this->m_odb))
{
return False;
}
// set our debug-mode or $bOutputHTML is the other one is set
if ($this->debug) $bOutputHTML = True;
if ($bOutputHTML && !$this->debug) $this->debug = 2;
foreach($aTables as $sTableName => $aTableDef)
{
if($this->DropTable($sTableName))
{
if($bOutputHTML)
{
echo '<br>Drop Table <b>' . $sTableSQL . '</b>';
}
}
else
{
return False;
}
}
return True;
}
/**
* Drops the table $sTableName
*
* @param string $sTableName
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function DropTable($sTableName)
{
if ($this->sType == 'pgsql') $this->_PostgresTestDropOldSequence($sTableName);
$aSql = $this->dict->DropTableSql($sTableName);
return $this->ExecuteSQLArray($aSql,2,'DropTable(%1) sql=%2',False,$sTableName,$aSql);
}
/**
* Drops column $sColumnName from table $sTableName
*
* @param string $sTableName table-name
* @param array $aTableDef eGW table-defintion
* @param string $sColumnName column-name
* @param boolean $bCopyData ???
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function DropColumn($sTableName, $aTableDef, $sColumnName, $bCopyData = true)
{
$table_def = $this->GetTableDefinition($sTableName);
unset($table_def['fd'][$sColumnName]);
$aSql = $this->dict->DropColumnSql($sTableName,$sColumnName,$ado_table=$this->_egw2adodb_columndef($table_def));
return $this->ExecuteSQLArray($aSql,2,'DropColumnSQL(%1,%2,%3) sql=%4',False,$sTableName,$sColumnName,$ado_table,$aSql);
}
/**
* Renames table $sOldTableName to $sNewTableName
*
* @param string $sOldTableName old (existing) table-name
* @param string $sNewTableName new table-name
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function RenameTable($sOldTableName, $sNewTableName)
{
if ($this->sType == 'pgsql') $this->_PostgresTestDropOldSequence($sTableName);
$aSql = $this->dict->RenameTableSQL($sOldTableName, $sNewTableName);
return $this->ExecuteSQLArray($aSql,2,'RenameTableSQL(%1,%2) sql=%3',False,$sOldTableName,$sNewTableName,$aSql);
}
/**
* Check if we have an old, not automaticaly droped sequence and drop it
*
*
* @param $sTableName
*/
function _PostgresTestDropOldSequence($sTableName)
{
if ($this->sType != 'pgsql') return;
$seq = $this->adodb->GetOne("SELECT d.adsrc FROM pg_attribute a, pg_class c, pg_attrdef d WHERE c.relname='$sTableName' AND c.oid=d.adrelid AND d.adsrc LIKE '%seq_$sTableName%' AND a.attrelid=c.oid AND d.adnum=a.attnum");
if ($seq && preg_match('/^nextval\(\'(.*)\'/',$seq,$matches))
{
$this->query('DROP SEQUENCE '.$matches[1],__LINE__,__FILE__);
}
}
/**
* Changes one (exiting) column in a table
*
* @param string $sTableName table-name
* @param string $sColumnName column-name
* @param array $aColumnDef new column-definition
* @param boolean $bCopyData ???
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function AlterColumn($sTableName, $sColumnName, $aColumnDef, $bCopyData=True)
{
$table_def = $this->GetTableDefinition($sTableName);
$table_def['fd'][$sColumnName] = $aColumnDef;
$aSql = $this->dict->AlterColumnSQL($sTableName,$ado_col = $this->_egw2adodb_columndef(array(
'fd' => array($sColumnName => $aColumnDef),
'pk' => array(),
)),$ado_table=$this->_egw2adodb_columndef($table_def));
return $this->ExecuteSQLArray($aSql,2,'AlterColumnSQL(%1,%2,%3) sql=%4',False,$sTableName,$ado_col,$ado_table,$aSql);
}
/**
* Renames column $sOldColumnName to $sNewColumnName in table $sTableName
*
* @param string $sTableName table-name
* @param string $sOldColumnName old (existing) column-name
* @param string $sNewColumnName new column-name
* @param boolean $bCopyData ???
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function RenameColumn($sTableName, $sOldColumnName, $sNewColumnName, $bCopyData=True)
{
$table_def = $this->GetTableDefinition($sTableName);
$col_def = $this->_egw2adodb_columndef(array(
'fd' => array($sNewColumnName => $table_def['fd'][strtolower($sOldColumnName)]),
'pk' => array(),
));
$aSql = $this->dict->RenameColumnSQL($sTableName,$sOldColumnName,$sNewColumnName,$col_def);
return $this->ExecuteSQLArray($aSql,2,'RenameColumnSQL(%1,%2,%3) sql=%4',False,$sTableName,$sOldColumnName, $sNewColumnName,$aSql);
}
/**
* Add one (new) column to a table
*
* @param string $sTableName table-name
* @param string $sColumnName column-name
* @param array $aColumnDef column-definition
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function AddColumn($sTableName, $sColumnName, $aColumnDef)
{
$aSql = $this->dict->AddColumnSQL($sTableName,$ado_cols = $this->_egw2adodb_columndef(array(
'fd' => array($sColumnName => $aColumnDef),
'pk' => array(),
)));
return $this->ExecuteSQLArray($aSql,2,'AlterColumnSQL(%1,%2,%3) sql=%4',False,$sTableName,$sColumnName, $aColumnDef,$aSql);
}
/**
* Create an (unique) Index over one or more columns
*
* @param string $sTablename table-name
* @param array $aColumnNames columns for the index
* @param boolean $bUnique=false true for a unique index, default false
* @param array/string $options='' db-sepecific options, default '' = none
* @param string $sIdxName='' name of the index, if not given (default) its created automaticaly
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function CreateIndex($sTableName,$aColumnNames,$bUnique=false,$options='',$sIdxName='')
{
if (!$sIdxName || is_numeric($sIdxName))
{
$sIdxName = $this->_index_name($sTableName,$aColumnNames);
}
if (!is_array($options)) $options = $options ? array($options) : array();
if ($bUnique) $options[] = 'UNIQUE';
$aSql = $this->dict->CreateIndexSQL($name,$sTableName,$aColumnNames,$options);
return $this->ExecuteSQLArray($aSql,2,'CreateIndexSQL(%1,%2,%3,%4) sql=%5',False,$name,$sTableName,$aColumnNames,$options,$aSql);
}
/**
* Drop an Index
*
* @param string $sTablename table-name
* @param array/string $aColumnNames columns of the index or the name of the index
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function DropIndex($sTableName,$aColumnNames)
{
if (is_array($aColumnNames))
{
$indexes = $this->dict->MetaIndexes($sTableName);
if ($indexes === False)
{
// if MetaIndexes is not availible for the DB, we try the name the index was created with
// this fails if one of the columns have been renamed
$sIdxName = $this->_index_name($sTableName,$aColumnNames);
}
else
{
foreach($this->dict->MetaIndexes($sTableName) as $idx => $idx_data)
{
if (strtolower(implode(':',$idx_data['columns'])) == implode(':',$aColumnNames))
{
$sIdxName = $idx;
break;
}
}
}
}
else
{
$sIdxName = $aColumnNames;
}
if(!$sIdxName)
{
return True;
}
$aSql = $this->dict->DropIndexSQL($sIdxName,$sTableName);
return $this->ExecuteSQLArray($aSql,2,'DropIndexSQL(%1(%2),%3) sql=%4',False,$sIdxName,$aColumnNames,$sTableName,$aSql);
}
/**
* Updating the sequence-value, after eg. copying data via RefreshTable
* @param string $sTableName table-name
* @param string $sColumnName column-name, which default is set to nextval()
*/
function UpdateSequence($sTableName,$sColumnName)
{
switch($this->sType)
{
case 'pgsql':
// identify the sequence name, ADOdb uses a different name or it might be renamed
$columns = $this->dict->MetaColumns($sTableName);
$seq_name = 'seq_'.$sTableName;
if (preg_match("/nextval\('([^']+)'::text\)/",$columns[strtoupper($sColumnName)]->default_value,$matches))
{
$seq_name = $matches[1];
}
$sql = "SELECT setval('$seq_name',MAX($sColumnName)) FROM $sTableName";
if($this->debug) { echo "<br>Updating sequence '$seq_name using: $sql"; }
return $this->query($sql,__LINE__,__FILE__);
}
return True;
}
/**
* This function manually re-created the table incl. primary key and all other indices
*
* It is meant to use if the primary key, existing indices or column-order changes or
* columns are not longer used or new columns need to be created (with there default value or NULL)
* Beside the default-value in the schema, one can give extra defaults via $aDefaults to eg. use an
* other colum or function to set the value of a new or changed column
*
* @param string $sTableName table-name
* @param array $aTableDef eGW table-defintion
* @param array/boolean $aDefaults array with default for the colums during copying, values are either (old) column-names or quoted string-literals
*/
function RefreshTable($sTableName, $aTableDef, $aDefaults=False)
{
if($this->debug) { echo "<p>schema_proc::RefreshTable('$sTableName',"._debug_array($aTableDef,False).")<p>$sTableName="._debug_array($old_table_def,False)."\n"; }
$old_table_def = $this->GetTableDefinition($sTableName);
$tmp_name = 'tmp_'.$sTableName;
$this->m_odb->transaction_begin();
$select = array();
$blob_column_included = $auto_column_included = False;
foreach($aTableDef['fd'] as $name => $data)
{
if ($aDefaults && isset($aDefaults[$name])) // use given default
{
$value = $aDefaults[$name];
}
elseif (isset($old_table_def['fd'][$name])) // existing column, use its value => column-name in query
{
$value = $name;
// this is eg. necessary to change a varchar into an int column under postgres
if ($this->sType == 'pgsql' &&
in_array($old_table_def['fd'][$name]['type'],array('char','varchar','text','blob')) &&
in_array($data['type'],array('int','decimal')))
{
$value = "to_number($name,'S9999999999999D99')";
}
}
else // new column => use default value or NULL
{
if (!isset($data['default']) && (!isset($data['nullable']) || $data['nullable']))
{
$value = 'NULL';
}
else
{
$value = $this->m_odb->quote(isset($data['default']) ? $data['default'] : '',$data['type']);
if ($this->sType == 'pgsql')
{
// fix for postgres error "no '<' operator for type 'unknown'"
if(($type_translated = $this->TranslateType($data['type'])))
{
$value = "CAST($value AS $type_translated)";
}
}
}
}
$blob_column_included = $blob_column_included || in_array($data['type'],array('blob','text','longtext'));
$auto_column_included = $auto_column_included || $data['type'] == 'auto';
$select[] = $value;
}
$select = implode(',',$select);
$extra = '';
$distinct = 'DISTINCT';
switch($this->sType)
{
case 'mssql':
if ($auto_column_included) $extra = "SET IDENTITY_INSERT $sTableName ON\n";
if ($blob_column_included) $distinct = ''; // no distinct on blob-columns
break;
}
// because of all the trouble with sequences and indexes in the global namespace,
// we use an additional temp. table for postgres and not rename the existing one, but drop it.
if ($this->sType == 'pgsql')
{
$Ok = $this->m_odb->query("SELEcT * INTO TEMPORARY TABLE $tmp_name FROM $sTableName",__LINE__,__FILE__) &&
$this->DropTable($sTableName);
}
else
{
$Ok = $this->RenameTable($sTableName,$tmp_name);
}
$Ok = $Ok && $this->CreateTable($sTableName,$aTableDef) &&
$this->m_odb->query("$extra INSERT INTO $sTableName (".
implode(',',array_keys($aTableDef['fd'])).
") SELEcT $distinct $select FROM $tmp_name",__LINE__,__FILE__) &&
$this->DropTable($tmp_name);
if (!$Ok)
{
$this->m_odb->transaction_abort();
return False;
}
// do we need to update the new sequences value ?
if (count($aTableDef['pk']) == 1 && $aTableDef['fd'][$aTableDef['pk'][0]]['type'] == 'auto')
{
$this->UpdateSequence($sTableName,$aTableDef['pk'][0]);
}
$this->m_odb->transaction_commit();
return True;
}
/**
* depricated Function does nothing any more
* @depricated
*/
function GenerateScripts($aTables, $bOutputHTML=False)
{
return True;
}
/**
* Creates all tables for one application
*
* @param array $aTables array of eGW table-definitions
* @param boolean $bOutputHTML should we give diagnostics, default False
* @return boolean True on success, False if an (fatal) error occured
*/
function ExecuteScripts($aTables, $bOutputHTML=False)
{
if(!is_array($aTables) || !IsSet($this->m_odb))
{
return False;
}
// set our debug-mode or $bOutputHTML is the other one is set
if ($this->debug) $bOutputHTML = True;
if ($bOutputHTML && !$this->debug) $this->debug = 2;
foreach($aTables as $sTableName => $aTableDef)
{
if($this->CreateTable($sTableName, $aTableDef))
{
if($bOutputHTML)
{
echo '<br>Create Table <b>' . $sTableName . '</b>';
}
}
else
{
if($bOutputHTML)
{
echo '<br>Create Table Failed For <b>' . $sTableName . '</b>';
}
return False;
}
}
return True;
}
/**
* Return the value of a column
*
* @param string/integer $Name name of field or positional index starting from 0
* @param bool $strip_slashes string escape chars from field(optional), default false
* @return string the field value
*/
function f($value,$strip_slashes=False)
{
return $this->m_odb->f($value,$strip_slashes);
}
/**
* Number of rows in current result set
*
* @return int number of rows
*/
function num_rows()
{
return $this->m_odb->num_rows();
}
/**
* Move to the next row in the results set
*
* @return bool was another row found?
*/
function next_record()
{
return $this->m_odb->next_record();
}
/**
* Execute a query
*
* @param string $Query_String the query to be executed
* @param mixed $line the line method was called from - use __LINE__
* @param string $file the file method was called from - use __FILE__
* @param int $offset row to start from
* @param int $num_rows number of rows to return (optional), if unset will use $GLOBALS['phpgw_info']['user']['preferences']['common']['maxmatchs']
* @return ADORecordSet or false, if the query fails
*/
function query($sQuery, $line='', $file='')
{
return $this->m_odb->query($sQuery, $line, $file);
}
/**
* Insert a row of data into a table or updates it if $where is given, all data is quoted according to it's type
*
* @param string $table name of the table
* @param array $data with column-name / value pairs
* @param mixed $where string with where clause or array with column-name / values pairs to check if a row with that keys already exists, or false for an unconditional insert
* if the row exists db::update is called else a new row with $date merged with $where gets inserted (data has precedence)
* @param int $line line-number to pass to query
* @param string $file file-name to pass to query
* @param string $app string with name of app, this need to be set in setup anyway!!!
* @return ADORecordSet or false, if the query fails
*/
function insert($table,$data,$where,$line,$file,$app)
{
return $this->m_odb->insert($table,$data,$where,$line,$file,$app);
}
/**
* Execute the Sql statements in an array and give diagnostics, if any error occures
*
* @param $aSql array of SQL strings to execute
* @param $debug_level int for which debug_level (and higher) should the diagnostics always been printed
* @param $debug string variable number of arguments for the debug_message functions in case of an error
* @return int 2: no error, 1: errors, but continued, 0: errors aborted
*/
function ExecuteSqlArray($aSql,$debug_level,$debug)
{
$retval = $this->dict->ExecuteSQLArray($aSql);
if ($retval < 2 || $this->debug >= $debug_level || $this->debug > 3)
{
$debug_params = func_get_args();
array_shift($debug_params);
array_shift($debug_params);
call_user_method_array('debug_message',$this,$debug_params);
if ($retval < 2 && !$this->dict->debug)
{
echo '<p><b>'.$this->adodb->ErrorMsg()."</b></p>\n";
}
}
return $retval;
}
/**
* Created a (unique) name for an index
*
* As the length of the index name is limited on some databases, we use two algorithms:
* a) we use just the first column-name with and added _2, _3, ... if more indexes uses that column
* b) we use the table-names plus all column-names and remove dublicate parts
*
* @internal
* @param $sTableName string name of the table
* @param $aColumnNames array of column-names or string with a single column-name
* @return string the index-name
*/
function _index_name($sTableName,$aColumnNames)
{
// this code creates extrem short index-names, eg. for MaxDB
if (isset($this->max_index_length[$this->sType]) && $this->max_index_length[$this->sType] <= 32)
{
static $existing_indexes=array();
if (!isset($existing_indexes[$sTableName]) && method_exists($this->adodb,'MetaIndexes'))
{
$existing_indexes[$sTableName] = $this->adodb->MetaIndexes($sTableName);
}
$i = 0;
$firstCol = is_array($aColumnNames) ? $aColumnNames[0] : $aColumnNames;
do
{
++$i;
$name = $firstCol . ($i > 1 ? '_'.$i : '');
}
while (isset($existing_indexes[$sTableName][$name]) || isset($existing_indexes[strtoupper($sTableName)][strtoupper($name)]));
$existing_indexes[$sTableName][$name] = True; // mark it as existing now
return $name;
}
// This code creates longer index-names incl. the table-names and the used columns
$table = str_replace(array('phpgw_','egw_'),'',$sTableName);
// if the table-name or a part of it is repeated in the column-name, remove it there
$remove[] = $table.'_';
// also remove 3 or 4 letter shortcuts of the table- or app-name
$remove[] = substr($table,0,3).'_';
$remove[] = substr($table,0,4).'_';
// if the table-name consists of '_' limtied parts, remove occurences of these parts too
foreach (explode('_',$table) as $part)
{
$remove[] = $part.'_';
}
$aColumnNames = str_replace($remove,'',$aColumnNames);
$name = $sTableName.'_'.(is_array($aColumnNames) ? implode('_',$aColumnNames) : $aColumnNames);
return $name;
}
/**
* Giving a non-fatal error-message
*/
function error($str)
{
echo "<p><b>Error:</b> $str</p>";
}
/**
* Giving a fatal error-message and exiting
*/
function fatal($str)
{
echo "<p><b>Fatal Error:</b> $str</p>";
exit;
}
/**
* Gives out a debug-message with certain parameters
*
* All permanent debug-messages in the calendar should be done by this function !!!
* (In future they may be logged or sent as xmlrpc-faults back.)
*
* Permanent debug-message need to make sure NOT to give secret information like passwords !!!
*
* This function do NOT honor the setting of the debug variable, you may use it like
* if ($this->debug > N) $this->debug_message('Error ;-)');
*
* The parameters get formated depending on their type.
*
* @param $msg string message with parameters/variables like lang(), eg. '%1'
* @param $backtrace include a function-backtrace, default True=On
* should only be set to False=Off, if your code ensures a call with backtrace=On was made before !!!
* @param $param mixed a variable number of parameters, to be inserted in $msg
* arrays get serialized with print_r() !
*/
function debug_message($msg,$backtrace=True)
{
for($i = 2; $i < func_num_args(); ++$i)
{
$param = func_get_arg($i);
if (is_null($param))
{
$param='NULL';
}
else
{
switch(gettype($param))
{
case 'string':
$param = "'$param'";
break;
case 'array':
case 'object':
list(,$content) = @each($param);
$do_pre = is_array($param) ? count($param) > 6 || is_array($content)&&count($content) : True;
$param = ($do_pre ? '<pre>' : '').print_r($param,True).($do_pre ? '</pre>' : '');
break;
case 'boolean':
$param = $param ? 'True' : 'False';
break;
}
}
$msg = str_replace('%'.($i-1),$param,$msg);
}
echo '<p>'.$msg."<br>\n".($backtrace ? 'Backtrace: '.function_backtrace(1)."</p>\n" : '');
}
/**
* Converts an eGW table-definition array into an ADOdb column-definition string
*
* @internal
* @param array $aTableDef eGW table-defintion
* @return string ADOdb column-definition string (comma separated)
*/
function _egw2adodb_columndef($aTableDef)
{
$ado_defs = array();
foreach($aTableDef['fd'] as $col => $col_data)
{
$ado_col = False;
switch($col_data['type'])
{
case 'auto':
$ado_col = 'I AUTOINCREMENT NOTNULL';
unset($col_data['nullable']); // else we set it twice
break;
case 'blob':
$ado_col = 'B';
break;
case 'bool':
$ado_col = 'L';
break;
case 'char':
// ADOdb does not differ between char and varchar
case 'varchar':
$ado_col = "C";
if(0 < $col_data['precision'] && $col_data['precision'] <= $this->max_varchar_length)
{
$ado_col .= "($col_data[precision])";
}
if($col_data['precision'] > $this->max_varchar_length)
{
$ado_col = 'X';
}
break;
case 'date':
$ado_col = 'D';
if ($col_data['default'] == 'current_date')
{
$ado_col .= ' DEFDATE';
unset($col_data['default']);
}
break;
case 'decimal':
$ado_col = "N($col_data[precision].$col_data[scale])";
break;
case 'double':
case 'float':
// ADOdb does not differ between float and double
$ado_col = 'F';
break;
case 'int':
$ado_col = 'I';
switch($col_data['precision'])
{
case 1:
case 2:
case 4:
case 8:
$ado_col .= $col_data['precision'];
break;
}
break;
case 'longtext':
$ado_col = 'XL';
break;
case 'text':
$ado_col = 'X';
break;
case 'timestamp':
$ado_col = 'T';
if ($col_data['default'] == 'current_timestamp')
{
$ado_col .= ' DEFTIMESTAMP';
unset($col_data['default']);
}
break;
}
if (!$ado_col)
{
$this->error("Ignoring unknown column-type '$col_data[type]($col_data[precision])' !!!<br>".function_backtrace());
continue;
}
if (isset($col_data['nullable']) && !$col_data['nullable'])
{
$ado_col .= ' NOTNULL';
}
if (isset($col_data['default']))
{
$ado_col .= " DEFAULT '$col_data[default]'";
}
if (in_array($col,$aTableDef['pk']))
{
$ado_col .= ' PRIMARY';
}
$ado_defs[] = $col . ' ' . $ado_col;
}
//print_r($aTableDef); echo implode(",\n",$ado_defs)."\n";
return implode(",\n",$ado_defs);
}
/**
* Translates an eGW type into the DB's native type
*
* @param string $egw_type eGW name of type
* @param string/boolean DB's name of the type or false if the type could not be identified (should not happen)
*/
function TranslateType($egw_type)
{
$ado_col = $this->_egw2adodb_columndef(array(
'fd' => array('test' => array('type' => $egw_type)),
'pk' => array(),
));
return preg_match('/test ([A-Z0-9]+)/i',$ado_col,$matches) ? $this->dict->ActualType($matches[1]) : false;
}
/**
* Read the table-definition direct from the database
*
* The definition might not be as accurate, depending on the DB!
*
* @param string $sTableName table-name
* @return array/boolean table-defition, like $phpgw_baseline[$sTableName] after including tables_current, or false on error
*/
function GetTableDefinition($sTableName)
{
// MetaType returns all varchar >= blobSize as blob, it's by default 100, which is wrong
if ($this->dict->blobSize < 255) $this->dict->blobSize = 255;
if (!method_exists($this->dict,'MetaColumns') ||
!($columns = $this->dict->MetaColumns($sTableName)))
{
return False;
}
$definition = array(
'fd' => array(),
'pk' => array(),
'fk' => array(),
'ix' => array(),
'uc' => array(),
);
//echo "$sTableName: <pre>".print_r($columns,true)."</pre>";
foreach($columns as $column)
{
switch($this->sType)
{
case 'sapdb':
case 'maxdb':
$name = strtolower($column->name);
break;
default:
$name = $column->name;
break;
}
$type = method_exists($this->dict,'MetaType') ? $this->dict->MetaType($column) : strtoupper($column->type);
static $ado_type2egw = array(
'C' => 'varchar',
'C2' => 'varchar',
'X' => 'text',
'X2' => 'text',
'XL' => 'longtext',
'B' => 'blob',
'I' => 'int',
'T' => 'timestamp',
'D' => 'date',
'F' => 'float',
'N' => 'decimal',
'R' => 'auto',
);
$definition['fd'][$name]['type'] = $ado_type2egw[$type];
switch($type)
{
case 'D': case 'T':
// detecting the automatic timestamps again
if ($column->has_default && preg_match('/(0000-00-00|timestamp)/i',$column->default_value))
{
$column->default_value = $type == 'D' ? 'current_date' : 'current_timestamp';
}
break;
case 'C': case 'C2':
$definition['fd'][$name]['type'] = 'varchar';
$definition['fd'][$name]['precision'] = $column->max_length;
break;
case 'B':
case 'X': case 'XL': case 'X2':
// text or blob's need to be nullable for most databases
$column->not_null = false;
break;
case 'F':
$definition['fd'][$name]['precision'] = $column->max_length;
break;
case 'N':
$definition['fd'][$name]['precision'] = $column->max_length;
$definition['fd'][$name]['scale'] = $column->scale;
break;
case 'R':
$column->auto_increment = true;
// fall-through
case 'I': case 'I1': case 'I2': case 'I4': case 'I8':
switch($type)
{
case 'I1': case 'I2': case 'I4': case 'I8':
$definition['fd'][$name]['precision'] = (int) $type[1];
break;
default:
if ($column->max_length > 11)
{
$definition['fd'][$name]['precision'] = 8;
}
elseif ($column->max_length > 6 || !$column->max_length)
{
$definition['fd'][$name]['precision'] = 4;
}
elseif ($column->max_length > 2)
{
$definition['fd'][$name]['precision'] = 2;
}
else
{
$definition['fd'][$name]['precision'] = 1;
}
break;
}
if ($column->auto_increment)
{
// no precision for auto!
$definition['fd'][$name] = array(
'type' => 'auto',
'nullable' => False,
);
$column->has_default = False;
$definition['pk'][] = $name;
}
else
{
$definition['fd'][$name]['type'] = 'int';
}
break;
}
if ($column->has_default)
{
$definition['fd'][$name]['default'] = $column->default_value;
}
if ($column->not_null)
{
$definition['fd'][$name]['nullable'] = False;
}
if ($column->primary_key && !in_array($name,$definition['pk']))
{
$definition['pk'][] = $name;
}
}
if ($this->debug > 2) $this->debug_message("schema_proc::GetTableDefintion: MetaColumns(%1) = %2",False,$sTableName,$columns);
// not all DB's (odbc) return the primary keys via MetaColumns
if (!count($definition['pk']) && method_exists($this->dict,'MetaPrimaryKeys') &&
is_array($primary = $this->dict->MetaPrimaryKeys($sTableName)) && count($primary))
{
switch($this->sType)
{
case 'sapdb':
case 'maxdb':
array_walk($primary,create_function('&$s','$s = strtolower($s);'));
break;
}
$definition['pk'] = $primary;
}
if ($this->debug > 1) $this->debug_message("schema_proc::GetTableDefintion: MetaPrimaryKeys(%1) = %2",False,$sTableName,$primary);
if (method_exists($this->dict,'MetaIndexes') &&
is_array($indexes = $this->dict->MetaIndexes($sTableName)) && count($indexes))
{
foreach($indexes as $index)
{
switch($this->sType)
{
case 'sapdb':
case 'maxdb':
array_walk($index['columns'],create_function('&$s','$s = strtolower($s);'));
break;
}
if (count($definition['pk']) && (implode(':',$definition['pk']) == implode(':',$index['columns']) ||
$index['unique'] && count(array_intersect($definition['pk'],$index['columns'])) == count($definition['pk'])))
{
continue; // is already the primary key => ignore it
}
$kind = $index['unique'] ? 'uc' : 'ix';
$definition[$kind][] = count($index['columns']) > 1 ? $index['columns'] : $index['columns'][0];
}
}
if ($this->debug > 2) $this->debug_message("schema_proc::GetTableDefintion: MetaIndexes(%1) = %2",False,$sTableName,$indexes);
if ($this->debug > 1) $this->debug_message("schema_proc::GetTableDefintion(%1) = %2",False,$sTableName,$definition);
return $definition;
}
/**
* Get actual columnnames as a comma-separated string in $sColumns and set indices as class-vars pk,fk,ix,uc
*
* old translator function, use GetTableDefition() instead
* @depricated
*/
function _GetColumns($oProc,$sTableName,&$sColumns)
{
$this->sCol = $this->pk = $this->fk = $this->ix = $this->uc = array();
$tabledef = $this->GetTableDefinition($sTableName);
$sColumns = implode(',',array_keys($tabledef['fd']));
foreach($tabledef['fd'] as $column => $data)
{
$col_def = "'type' => '$data[type]'";
unset($data['type']);
foreach($data as $key => $val)
{
$col_def .= ", '$key' => ".(is_bool($val) ? ($val ? 'true' : 'false') :
(is_int($val) ? $val : "'$val'"));
}
$this->sCol[] = "\t\t\t\t'$column' => array($col_def),\n";
}
foreach(array('pk','fk','ix','uc') as $kind)
{
$this->$kind = $tabledef[$kind];
}
}
}
?>
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