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<?php
// Copyright (c) 2004 ars Cognita Inc., all rights reserved
/* ******************************************************************************
Released under both BSD license and Lesser GPL library license.
Whenever there is any discrepancy between the two licenses,
the BSD license will take precedence.
*******************************************************************************/
/**
* xmlschema is a class that allows the user to quickly and easily
* build a database on any ADOdb-supported platform using a simple
* XML schema.
*
* Last Editor: $Author: chriskl $
* @author Richard Tango-Lowy & Dan Cech
* @version $Revision: 1.1 $
*
* @package axmls
* @tutorial getting_started.pkg
*/
/**
* Debug on or off
*/
if( !defined( 'XMLS_DEBUG' ) ) {
define( 'XMLS_DEBUG', FALSE );
}
/**
* Default prefix key
*/
if( !defined( 'XMLS_PREFIX' ) ) {
define( 'XMLS_PREFIX', '%%P' );
}
/**
* Maximum length allowed for object prefix
*/
if( !defined( 'XMLS_PREFIX_MAXLEN' ) ) {
define( 'XMLS_PREFIX_MAXLEN', 10 );
}
/**
* Execute SQL inline as it is generated
*/
if( !defined( 'XMLS_EXECUTE_INLINE' ) ) {
define( 'XMLS_EXECUTE_INLINE', FALSE );
}
/**
* Continue SQL Execution if an error occurs?
*/
if( !defined( 'XMLS_CONTINUE_ON_ERROR' ) ) {
define( 'XMLS_CONTINUE_ON_ERROR', FALSE );
}
/**
* Current Schema Version
*/
if( !defined( 'XMLS_SCHEMA_VERSION' ) ) {
define( 'XMLS_SCHEMA_VERSION', '0.2' );
}
/**
* Default Schema Version. Used for Schemas without an explicit version set.
*/
if( !defined( 'XMLS_DEFAULT_SCHEMA_VERSION' ) ) {
define( 'XMLS_DEFAULT_SCHEMA_VERSION', '0.1' );
}
/**
* Default Schema Version. Used for Schemas without an explicit version set.
*/
if( !defined( 'XMLS_DEFAULT_UPGRADE_METHOD' ) ) {
define( 'XMLS_DEFAULT_UPGRADE_METHOD', 'ALTER' );
}
/**
* Include the main ADODB library
*/
if( !defined( '_ADODB_LAYER' ) ) {
require( 'adodb.inc.php' );
require( 'adodb-datadict.inc.php' );
}
/**
* Abstract DB Object. This class provides basic methods for database objects, such
* as tables and indexes.
*
* @package axmls
* @access private
*/
class dbObject {
/**
* var object Parent
*/
var $parent;
/**
* var string current element
*/
var $currentElement;
/**
* NOP
*/
function dbObject( &$parent, $attributes = NULL ) {
$this->parent =& $parent;
}
/**
* XML Callback to process start elements
*
* @access private
*/
function _tag_open( &$parser, $tag, $attributes ) {
}
/**
* XML Callback to process CDATA elements
*
* @access private
*/
function _tag_cdata( &$parser, $cdata ) {
}
/**
* XML Callback to process end elements
*
* @access private
*/
function _tag_close( &$parser, $tag ) {
}
function create() {
return array();
}
/**
* Destroys the object
*/
function destroy() {
unset( $this );
}
/**
* Checks whether the specified RDBMS is supported by the current
* database object or its ranking ancestor.
*
* @param string $platform RDBMS platform name (from ADODB platform list).
* @return boolean TRUE if RDBMS is supported; otherwise returns FALSE.
*/
function supportedPlatform( $platform = NULL ) {
return is_object( $this->parent ) ? $this->parent->supportedPlatform( $platform ) : TRUE;
}
/**
* Returns the prefix set by the ranking ancestor of the database object.
*
* @param string $name Prefix string.
* @return string Prefix.
*/
function prefix( $name = '' ) {
return is_object( $this->parent ) ? $this->parent->prefix( $name ) : $name;
}
/**
* Extracts a field ID from the specified field.
*
* @param string $field Field.
* @return string Field ID.
*/
function FieldID( $field ) {
return strtoupper( preg_replace( '/^`(.+)`$/', '$1', $field ) );
}
}
/**
* Creates a table object in ADOdb's datadict format
*
* This class stores information about a database table. As charactaristics
* of the table are loaded from the external source, methods and properties
* of this class are used to build up the table description in ADOdb's
* datadict format.
*
* @package axmls
* @access private
*/
class dbTable extends dbObject {
/**
* @var string Table name
*/
var $name;
/**
* @var array Field specifier: Meta-information about each field
*/
var $fields = array();
/**
* @var array List of table indexes.
*/
var $indexes = array();
/**
* @var array Table options: Table-level options
*/
var $opts = array();
/**
* @var string Field index: Keeps track of which field is currently being processed
*/
var $current_field;
/**
* @var boolean Mark table for destruction
* @access private
*/
var $drop_table;
/**
* @var boolean Mark field for destruction (not yet implemented)
* @access private
*/
var $drop_field = array();
/**
* Iniitializes a new table object.
*
* @param string $prefix DB Object prefix
* @param array $attributes Array of table attributes.
*/
function dbTable( &$parent, $attributes = NULL ) {
$this->parent =& $parent;
$this->name = $this->prefix($attributes['NAME']);
}
/**
* XML Callback to process start elements. Elements currently
* processed are: INDEX, DROP, FIELD, KEY, NOTNULL, AUTOINCREMENT & DEFAULT.
*
* @access private
*/
function _tag_open( &$parser, $tag, $attributes ) {
$this->currentElement = strtoupper( $tag );
switch( $this->currentElement ) {
case 'INDEX':
if( !isset( $attributes['PLATFORM'] ) OR $this->supportedPlatform( $attributes['PLATFORM'] ) ) {
xml_set_object( $parser, $this->addIndex( $attributes ) );
}
break;
case 'DATA':
if( !isset( $attributes['PLATFORM'] ) OR $this->supportedPlatform( $attributes['PLATFORM'] ) ) {
xml_set_object( $parser, $this->addData( $attributes ) );
}
break;
case 'DROP':
$this->drop();
break;
case 'FIELD':
// Add a field
$fieldName = $attributes['NAME'];
$fieldType = $attributes['TYPE'];
$fieldSize = isset( $attributes['SIZE'] ) ? $attributes['SIZE'] : NULL;
$fieldOpts = isset( $attributes['OPTS'] ) ? $attributes['OPTS'] : NULL;
$this->addField( $fieldName, $fieldType, $fieldSize, $fieldOpts );
break;
case 'KEY':
case 'NOTNULL':
case 'AUTOINCREMENT':
// Add a field option
$this->addFieldOpt( $this->current_field, $this->currentElement );
break;
case 'DEFAULT':
// Add a field option to the table object
// Work around ADOdb datadict issue that misinterprets empty strings.
if( $attributes['VALUE'] == '' ) {
$attributes['VALUE'] = " '' ";
}
$this->addFieldOpt( $this->current_field, $this->currentElement, $attributes['VALUE'] );
break;
case 'DEFDATE':
case 'DEFTIMESTAMP':
// Add a field option to the table object
$this->addFieldOpt( $this->current_field, $this->currentElement );
break;
default:
// print_r( array( $tag, $attributes ) );
}
}
/**
* XML Callback to process CDATA elements
*
* @access private
*/
function _tag_cdata( &$parser, $cdata ) {
switch( $this->currentElement ) {
// Table constraint
case 'CONSTRAINT':
if( isset( $this->current_field ) ) {
$this->addFieldOpt( $this->current_field, $this->currentElement, $cdata );
} else {
$this->addTableOpt( $cdata );
}
break;
// Table option
case 'OPT':
$this->addTableOpt( $cdata );
break;
default:
}
}
/**
* XML Callback to process end elements
*
* @access private
*/
function _tag_close( &$parser, $tag ) {
$this->currentElement = '';
switch( strtoupper( $tag ) ) {
case 'TABLE':
$this->parent->addSQL( $this->create( $this->parent ) );
xml_set_object( $parser, $this->parent );
$this->destroy();
break;
case 'FIELD':
unset($this->current_field);
break;
}
}
/**
* Adds an index to a table object
*
* @param array $attributes Index attributes
* @return object dbIndex object
*/
function &addIndex( $attributes ) {
$name = strtoupper( $attributes['NAME'] );
$this->indexes[$name] =& new dbIndex( $this, $attributes );
return $this->indexes[$name];
}
/**
* Adds data to a table object
*
* @param array $attributes Data attributes
* @return object dbData object
*/
function &addData( $attributes ) {
if( !isset( $this->data ) ) {
$this->data =& new dbData( $this, $attributes );
}
return $this->data;
}
/**
* Adds a field to a table object
*
* $name is the name of the table to which the field should be added.
* $type is an ADODB datadict field type. The following field types
* are supported as of ADODB 3.40:
* - C: varchar
* - X: CLOB (character large object) or largest varchar size
* if CLOB is not supported
* - C2: Multibyte varchar
* - X2: Multibyte CLOB
* - B: BLOB (binary large object)
* - D: Date (some databases do not support this, and we return a datetime type)
* - T: Datetime or Timestamp
* - L: Integer field suitable for storing booleans (0 or 1)
* - I: Integer (mapped to I4)
* - I1: 1-byte integer
* - I2: 2-byte integer
* - I4: 4-byte integer
* - I8: 8-byte integer
* - F: Floating point number
* - N: Numeric or decimal number
*
* @param string $name Name of the table to which the field will be added.
* @param string $type ADODB datadict field type.
* @param string $size Field size
* @param array $opts Field options array
* @return array Field specifier array
*/
function addField( $name, $type, $size = NULL, $opts = NULL ) {
$field_id = $this->FieldID( $name );
// Set the field index so we know where we are
$this->current_field = $field_id;
// Set the field name (required)
$this->fields[$field_id]['NAME'] = $name;
// Set the field type (required)
$this->fields[$field_id]['TYPE'] = $type;
// Set the field size (optional)
if( isset( $size ) ) {
$this->fields[$field_id]['SIZE'] = $size;
}
// Set the field options
if( isset( $opts ) ) {
$this->fields[$field_id]['OPTS'][] = $opts;
}
}
/**
* Adds a field option to the current field specifier
*
* This method adds a field option allowed by the ADOdb datadict
* and appends it to the given field.
*
* @param string $field Field name
* @param string $opt ADOdb field option
* @param mixed $value Field option value
* @return array Field specifier array
*/
function addFieldOpt( $field, $opt, $value = NULL ) {
if( !isset( $value ) ) {
$this->fields[$this->FieldID( $field )]['OPTS'][] = $opt;
// Add the option and value
} else {
$this->fields[$this->FieldID( $field )]['OPTS'][] = array( $opt => $value );
}
}
/**
* Adds an option to the table
*
* This method takes a comma-separated list of table-level options
* and appends them to the table object.
*
* @param string $opt Table option
* @return array Options
*/
function addTableOpt( $opt ) {
$this->opts[] = $opt;
return $this->opts;
}
/**
* Generates the SQL that will create the table in the database
*
* @param object $xmls adoSchema object
* @return array Array containing table creation SQL
*/
function create( &$xmls ) {
$sql = array();
// drop any existing indexes
if( is_array( $legacy_indexes = $xmls->dict->MetaIndexes( $this->name ) ) ) {
foreach( $legacy_indexes as $index => $index_details ) {
$sql[] = $xmls->dict->DropIndexSQL( $index, $this->name );
}
}
// remove fields to be dropped from table object
foreach( $this->drop_field as $field ) {
unset( $this->fields[$field] );
}
// if table exists
if( is_array( $legacy_fields = $xmls->dict->MetaColumns( $this->name ) ) ) {
// drop table
if( $this->drop_table ) {
$sql[] = $xmls->dict->DropTableSQL( $this->name );
return $sql;
}
// drop any existing fields not in schema
foreach( $legacy_fields as $field_id => $field ) {
if( !isset( $this->fields[$field_id] ) ) {
$sql[] = $xmls->dict->DropColumnSQL( $this->name, '`'.$field->name.'`' );
}
}
// if table doesn't exist
} else {
if( $this->drop_table ) {
return $sql;
}
$legacy_fields = array();
}
// Loop through the field specifier array, building the associative array for the field options
$fldarray = array();
foreach( $this->fields as $field_id => $finfo ) {
// Set an empty size if it isn't supplied
if( !isset( $finfo['SIZE'] ) ) {
$finfo['SIZE'] = '';
}
// Initialize the field array with the type and size
$fldarray[$field_id] = array(
'NAME' => $finfo['NAME'],
'TYPE' => $finfo['TYPE'],
'SIZE' => $finfo['SIZE']
);
// Loop through the options array and add the field options.
if( isset( $finfo['OPTS'] ) ) {
foreach( $finfo['OPTS'] as $opt ) {
// Option has an argument.
if( is_array( $opt ) ) {
$key = key( $opt );
$value = $opt[key( $opt )];
@$fldarray[$field_id][$key] .= $value;
// Option doesn't have arguments
} else {
$fldarray[$field_id][$opt] = $opt;
}
}
}
}
if( empty( $legacy_fields ) ) {
// Create the new table
$sql[] = $xmls->dict->CreateTableSQL( $this->name, $fldarray, $this->opts );
logMsg( end( $sql ), 'Generated CreateTableSQL' );
} else {
// Upgrade an existing table
logMsg( "Upgrading {$this->name} using '{$xmls->upgrade}'" );
switch( $xmls->upgrade ) {
// Use ChangeTableSQL
case 'ALTER':
logMsg( 'Generated ChangeTableSQL (ALTERing table)' );
$sql[] = $xmls->dict->ChangeTableSQL( $this->name, $fldarray, $this->opts );
break;
case 'REPLACE':
logMsg( 'Doing upgrade REPLACE (testing)' );
$sql[] = $xmls->dict->DropTableSQL( $this->name );
$sql[] = $xmls->dict->CreateTableSQL( $this->name, $fldarray, $this->opts );
break;
// ignore table
default:
return array();
}
}
foreach( $this->indexes as $index ) {
$sql[] = $index->create( $xmls );
}
if( isset( $this->data ) ) {
$sql[] = $this->data->create( $xmls );
}
return $sql;
}
/**
* Marks a field or table for destruction
*/
function drop() {
if( isset( $this->current_field ) ) {
// Drop the current field
logMsg( "Dropping field '{$this->current_field}' from table '{$this->name}'" );
// $this->drop_field[$this->current_field] = $xmls->dict->DropColumnSQL( $this->name, $this->current_field );
$this->drop_field[$this->current_field] = $this->current_field;
} else {
// Drop the current table
logMsg( "Dropping table '{$this->name}'" );
// $this->drop_table = $xmls->dict->DropTableSQL( $this->name );
$this->drop_table = TRUE;
}
}
}
/**
* Creates an index object in ADOdb's datadict format
*
* This class stores information about a database index. As charactaristics
* of the index are loaded from the external source, methods and properties
* of this class are used to build up the index description in ADOdb's
* datadict format.
*
* @package axmls
* @access private
*/
class dbIndex extends dbObject {
/**
* @var string Index name
*/
var $name;
/**
* @var array Index options: Index-level options
*/
var $opts = array();
/**
* @var array Indexed fields: Table columns included in this index
*/
var $columns = array();
/**
* @var boolean Mark index for destruction
* @access private
*/
var $drop = FALSE;
/**
* Initializes the new dbIndex object.
*
* @param object $parent Parent object
* @param array $attributes Attributes
*
* @internal
*/
function dbIndex( &$parent, $attributes = NULL ) {
$this->parent =& $parent;
$this->name = $this->prefix ($attributes['NAME']);
}
/**
* XML Callback to process start elements
*
* Processes XML opening tags.
* Elements currently processed are: DROP, CLUSTERED, BITMAP, UNIQUE, FULLTEXT & HASH.
*
* @access private
*/
function _tag_open( &$parser, $tag, $attributes ) {
$this->currentElement = strtoupper( $tag );
switch( $this->currentElement ) {
case 'DROP':
$this->drop();
break;
case 'CLUSTERED':
case 'BITMAP':
case 'UNIQUE':
case 'FULLTEXT':
case 'HASH':
// Add index Option
$this->addIndexOpt( $this->currentElement );
break;
default:
// print_r( array( $tag, $attributes ) );
}
}
/**
* XML Callback to process CDATA elements
*
* Processes XML cdata.
*
* @access private
*/
function _tag_cdata( &$parser, $cdata ) {
switch( $this->currentElement ) {
// Index field name
case 'COL':
$this->addField( $cdata );
break;
default:
}
}
/**
* XML Callback to process end elements
*
* @access private
*/
function _tag_close( &$parser, $tag ) {
$this->currentElement = '';
switch( strtoupper( $tag ) ) {
case 'INDEX':
xml_set_object( $parser, $this->parent );
break;
}
}
/**
* Adds a field to the index
*
* @param string $name Field name
* @return string Field list
*/
function addField( $name ) {
$this->columns[$this->FieldID( $name )] = $name;
// Return the field list
return $this->columns;
}
/**
* Adds options to the index
*
* @param string $opt Comma-separated list of index options.
* @return string Option list
*/
function addIndexOpt( $opt ) {
$this->opts[] = $opt;
// Return the options list
return $this->opts;
}
/**
* Generates the SQL that will create the index in the database
*
* @param object $xmls adoSchema object
* @return array Array containing index creation SQL
*/
function create( &$xmls ) {
if( $this->drop ) {
return NULL;
}
// eliminate any columns that aren't in the table
foreach( $this->columns as $id => $col ) {
if( !isset( $this->parent->fields[$id] ) ) {
unset( $this->columns[$id] );
}
}
return $xmls->dict->CreateIndexSQL( $this->name, $this->parent->name, $this->columns, $this->opts );
}
/**
* Marks an index for destruction
*/
function drop() {
$this->drop = TRUE;
}
}
/**
* Creates a data object in ADOdb's datadict format
*
* This class stores information about table data.
*
* @package axmls
* @access private
*/
class dbData extends dbObject {
var $data = array();
var $row;
/**
* Initializes the new dbIndex object.
*
* @param object $parent Parent object
* @param array $attributes Attributes
*
* @internal
*/
function dbData( &$parent, $attributes = NULL ) {
$this->parent =& $parent;
}
/**
* XML Callback to process start elements
*
* Processes XML opening tags.
* Elements currently processed are: DROP, CLUSTERED, BITMAP, UNIQUE, FULLTEXT & HASH.
*
* @access private
*/
function _tag_open( &$parser, $tag, $attributes ) {
$this->currentElement = strtoupper( $tag );
switch( $this->currentElement ) {
case 'ROW':
$this->row = count( $this->data );
$this->data[$this->row] = array();
break;
case 'F':
$this->addField($attributes);
default:
// print_r( array( $tag, $attributes ) );
}
}
/**
* XML Callback to process CDATA elements
*
* Processes XML cdata.
*
* @access private
*/
function _tag_cdata( &$parser, $cdata ) {
switch( $this->currentElement ) {
// Index field name
case 'F':
$this->addData( $cdata );
break;
default:
}
}
/**
* XML Callback to process end elements
*
* @access private
*/
function _tag_close( &$parser, $tag ) {
$this->currentElement = '';
switch( strtoupper( $tag ) ) {
case 'DATA':
xml_set_object( $parser, $this->parent );
break;
}
}
/**
* Adds a field to the index
*
* @param string $name Field name
* @return string Field list
*/
function addField( $attributes ) {
if( isset( $attributes['NAME'] ) ) {
$name = $attributes['NAME'];
} else {
$name = count($this->data[$this->row]);
}
// Set the field index so we know where we are
$this->current_field = $this->FieldID( $name );
}
/**
* Adds options to the index
*
* @param string $opt Comma-separated list of index options.
* @return string Option list
*/
function addData( $cdata ) {
if( !isset( $this->data[$this->row] ) ) {
$this->data[$this->row] = array();
}
if( !isset( $this->data[$this->row][$this->current_field] ) ) {
$this->data[$this->row][$this->current_field] = '';
}
$this->data[$this->row][$this->current_field] .= $cdata;
}
/**
* Generates the SQL that will create the index in the database
*
* @param object $xmls adoSchema object
* @return array Array containing index creation SQL
*/
function create( &$xmls ) {
$table = $xmls->dict->TableName($this->parent->name);
$table_field_count = count($this->parent->fields);
$sql = array();
// eliminate any columns that aren't in the table
foreach( $this->data as $row ) {
$table_fields = $this->parent->fields;
$fields = array();
foreach( $row as $field_id => $field_data ) {
if( !array_key_exists( $field_id, $table_fields ) ) {
if( is_numeric( $field_id ) ) {
$field_id = reset( array_keys( $table_fields ) );
} else {
continue;
}
}
$name = $table_fields[$field_id]['NAME'];
switch( $table_fields[$field_id]['TYPE'] ) {
case 'C':
case 'C2':
case 'X':
case 'X2':
$fields[$name] = $xmls->db->qstr( $field_data );
break;
case 'I':
case 'I1':
case 'I2':
case 'I4':
case 'I8':
$fields[$name] = intval($field_data);
break;
default:
$fields[$name] = $field_data;
}
unset($table_fields[$field_id]);
}
// check that at least 1 column is specified
if( empty( $fields ) ) {
continue;
}
// check that no required columns are missing
if( count( $fields ) < $table_field_count ) {
foreach( $table_fields as $field ) {
if (isset( $field['OPTS'] ))
if( ( in_array( 'NOTNULL', $field['OPTS'] ) || in_array( 'KEY', $field['OPTS'] ) ) && !in_array( 'AUTOINCREMENT', $field['OPTS'] ) ) {
continue(2);
}
}
}
$sql[] = 'INSERT INTO '. $table .' ('. implode( ',', array_keys( $fields ) ) .') VALUES ('. implode( ',', $fields ) .')';
}
return $sql;
}
}
/**
* Creates the SQL to execute a list of provided SQL queries
*
* @package axmls
* @access private
*/
class dbQuerySet extends dbObject {
/**
* @var array List of SQL queries
*/
var $queries = array();
/**
* @var string String used to build of a query line by line
*/
var $query;
/**
* @var string Query prefix key
*/
var $prefixKey = '';
/**
* @var boolean Auto prefix enable (TRUE)
*/
var $prefixMethod = 'AUTO';
/**
* Initializes the query set.
*
* @param object $parent Parent object
* @param array $attributes Attributes
*/
function dbQuerySet( &$parent, $attributes = NULL ) {
$this->parent =& $parent;
// Overrides the manual prefix key
if( isset( $attributes['KEY'] ) ) {
$this->prefixKey = $attributes['KEY'];
}
$prefixMethod = isset( $attributes['PREFIXMETHOD'] ) ? strtoupper( trim( $attributes['PREFIXMETHOD'] ) ) : '';
// Enables or disables automatic prefix prepending
switch( $prefixMethod ) {
case 'AUTO':
$this->prefixMethod = 'AUTO';
break;
case 'MANUAL':
$this->prefixMethod = 'MANUAL';
break;
case 'NONE':
$this->prefixMethod = 'NONE';
break;
}
}
/**
* XML Callback to process start elements. Elements currently
* processed are: QUERY.
*
* @access private
*/
function _tag_open( &$parser, $tag, $attributes ) {
$this->currentElement = strtoupper( $tag );
switch( $this->currentElement ) {
case 'QUERY':
// Create a new query in a SQL queryset.
// Ignore this query set if a platform is specified and it's different than the
// current connection platform.
if( !isset( $attributes['PLATFORM'] ) OR $this->supportedPlatform( $attributes['PLATFORM'] ) ) {
$this->newQuery();
} else {
$this->discardQuery();
}
break;
default:
// print_r( array( $tag, $attributes ) );
}
}
/**
* XML Callback to process CDATA elements
*/
function _tag_cdata( &$parser, $cdata ) {
switch( $this->currentElement ) {
// Line of queryset SQL data
case 'QUERY':
$this->buildQuery( $cdata );
break;
default:
}
}
/**
* XML Callback to process end elements
*
* @access private
*/
function _tag_close( &$parser, $tag ) {
$this->currentElement = '';
switch( strtoupper( $tag ) ) {
case 'QUERY':
// Add the finished query to the open query set.
$this->addQuery();
break;
case 'SQL':
$this->parent->addSQL( $this->create( $this->parent ) );
xml_set_object( $parser, $this->parent );
$this->destroy();
break;
default:
}
}
/**
* Re-initializes the query.
*
* @return boolean TRUE
*/
function newQuery() {
$this->query = '';
return TRUE;
}
/**
* Discards the existing query.
*
* @return boolean TRUE
*/
function discardQuery() {
unset( $this->query );
return TRUE;
}
/**
* Appends a line to a query that is being built line by line
*
* @param string $data Line of SQL data or NULL to initialize a new query
* @return string SQL query string.
*/
function buildQuery( $sql = NULL ) {
if( !isset( $this->query ) OR empty( $sql ) ) {
return FALSE;
}
$this->query .= $sql;
return $this->query;
}
/**
* Adds a completed query to the query list
*
* @return string SQL of added query
*/
function addQuery() {
if( !isset( $this->query ) ) {
return FALSE;
}
$this->queries[] = $return = trim($this->query);
unset( $this->query );
return $return;
}
/**
* Creates and returns the current query set
*
* @param object $xmls adoSchema object
* @return array Query set
*/
function create( &$xmls ) {
foreach( $this->queries as $id => $query ) {
switch( $this->prefixMethod ) {
case 'AUTO':
// Enable auto prefix replacement
// Process object prefix.
// Evaluate SQL statements to prepend prefix to objects
$query = $this->prefixQuery( '/^\s*((?is)INSERT\s+(INTO\s+)?)((\w+\s*,?\s*)+)(\s.*$)/', $query, $xmls->objectPrefix );
$query = $this->prefixQuery( '/^\s*((?is)UPDATE\s+(FROM\s+)?)((\w+\s*,?\s*)+)(\s.*$)/', $query, $xmls->objectPrefix );
$query = $this->prefixQuery( '/^\s*((?is)DELETE\s+(FROM\s+)?)((\w+\s*,?\s*)+)(\s.*$)/', $query, $xmls->objectPrefix );
// SELECT statements aren't working yet
#$data = preg_replace( '/(?ias)(^\s*SELECT\s+.*\s+FROM)\s+(\W\s*,?\s*)+((?i)\s+WHERE.*$)/', "\1 $prefix\2 \3", $data );
case 'MANUAL':
// If prefixKey is set and has a value then we use it to override the default constant XMLS_PREFIX.
// If prefixKey is not set, we use the default constant XMLS_PREFIX
if( isset( $this->prefixKey ) AND( $this->prefixKey !== '' ) ) {
// Enable prefix override
$query = str_replace( $this->prefixKey, $xmls->objectPrefix, $query );
} else {
// Use default replacement
$query = str_replace( XMLS_PREFIX , $xmls->objectPrefix, $query );
}
}
$this->queries[$id] = trim( $query );
}
// Return the query set array
return $this->queries;
}
/**
* Rebuilds the query with the prefix attached to any objects
*
* @param string $regex Regex used to add prefix
* @param string $query SQL query string
* @param string $prefix Prefix to be appended to tables, indices, etc.
* @return string Prefixed SQL query string.
*/
function prefixQuery( $regex, $query, $prefix = NULL ) {
if( !isset( $prefix ) ) {
return $query;
}
if( preg_match( $regex, $query, $match ) ) {
$preamble = $match[1];
$postamble = $match[5];
$objectList = explode( ',', $match[3] );
// $prefix = $prefix . '_';
$prefixedList = '';
foreach( $objectList as $object ) {
if( $prefixedList !== '' ) {
$prefixedList .= ', ';
}
$prefixedList .= $prefix . trim( $object );
}
$query = $preamble . ' ' . $prefixedList . ' ' . $postamble;
}
return $query;
}
}
/**
* Loads and parses an XML file, creating an array of "ready-to-run" SQL statements
*
* This class is used to load and parse the XML file, to create an array of SQL statements
* that can be used to build a database, and to build the database using the SQL array.
*
* @tutorial getting_started.pkg
*
* @author Richard Tango-Lowy & Dan Cech
* @version $Revision: 1.1 $
*
* @package axmls
*/
class adoSchema {
/**
* @var array Array containing SQL queries to generate all objects
* @access private
*/
var $sqlArray;
/**
* @var object ADOdb connection object
* @access private
*/
var $db;
/**
* @var object ADOdb Data Dictionary
* @access private
*/
var $dict;
/**
* @var string Current XML element
* @access private
*/
var $currentElement = '';
/**
* @var string If set (to 'ALTER' or 'REPLACE'), upgrade an existing database
* @access private
*/
var $upgrade = '';
/**
* @var string Optional object prefix
* @access private
*/
var $objectPrefix = '';
/**
* @var long Original Magic Quotes Runtime value
* @access private
*/
var $mgq;
/**
* @var long System debug
* @access private
*/
var $debug;
/**
* @var string Regular expression to find schema version
* @access private
*/
var $versionRegex = '/<schema.*?( version="([^"]*)")?.*?>/';
/**
* @var string Current schema version
* @access private
*/
var $schemaVersion;
/**
* @var int Success of last Schema execution
*/
var $success;
/**
* @var bool Execute SQL inline as it is generated
*/
var $executeInline;
/**
* @var bool Continue SQL execution if errors occur
*/
var $continueOnError;
/**
* Creates an adoSchema object
*
* Creating an adoSchema object is the first step in processing an XML schema.
* The only parameter is an ADOdb database connection object, which must already
* have been created.
*
* @param object $db ADOdb database connection object.
*/
function adoSchema( &$db ) {
// Initialize the environment
$this->mgq = get_magic_quotes_runtime();
set_magic_quotes_runtime(0);
$this->db =& $db;
$this->debug = $this->db->debug;
$this->dict = NewDataDictionary( $this->db );
$this->sqlArray = array();
$this->schemaVersion = XMLS_SCHEMA_VERSION;
$this->executeInline( XMLS_EXECUTE_INLINE );
$this->continueOnError( XMLS_CONTINUE_ON_ERROR );
$this->setUpgradeMethod();
}
/**
* Sets the method to be used for upgrading an existing database
*
* Use this method to specify how existing database objects should be upgraded.
* The method option can be set to ALTER, REPLACE, BEST, or NONE. ALTER attempts to
* alter each database object directly, REPLACE attempts to rebuild each object
* from scratch, BEST attempts to determine the best upgrade method for each
* object, and NONE disables upgrading.
*
* This method is not yet used by AXMLS, but exists for backward compatibility.
* The ALTER method is automatically assumed when the adoSchema object is
* instantiated; other upgrade methods are not currently supported.
*
* @param string $method Upgrade method (ALTER|REPLACE|BEST|NONE)
* @returns string Upgrade method used
*/
function SetUpgradeMethod( $method = '' ) {
if( !is_string( $method ) ) {
return FALSE;
}
$method = strtoupper( $method );
// Handle the upgrade methods
switch( $method ) {
case 'ALTER':
$this->upgrade = $method;
break;
case 'REPLACE':
$this->upgrade = $method;
break;
case 'BEST':
$this->upgrade = 'ALTER';
break;
case 'NONE':
$this->upgrade = 'NONE';
break;
default:
// Use default if no legitimate method is passed.
$this->upgrade = XMLS_DEFAULT_UPGRADE_METHOD;
}
return $this->upgrade;
}
/**
* Enables/disables inline SQL execution.
*
* Call this method to enable or disable inline execution of the schema. If the mode is set to TRUE (inline execution),
* AXMLS applies the SQL to the database immediately as each schema entity is parsed. If the mode
* is set to FALSE (post execution), AXMLS parses the entire schema and you will need to call adoSchema::ExecuteSchema()
* to apply the schema to the database.
*
* @param bool $mode execute
* @return bool current execution mode
*
* @see ParseSchema(), ExecuteSchema()
*/
function ExecuteInline( $mode = NULL ) {
if( is_bool( $mode ) ) {
$this->executeInline = $mode;
}
return $this->executeInline;
}
/**
* Enables/disables SQL continue on error.
*
* Call this method to enable or disable continuation of SQL execution if an error occurs.
* If the mode is set to TRUE (continue), AXMLS will continue to apply SQL to the database, even if an error occurs.
* If the mode is set to FALSE (halt), AXMLS will halt execution of generated sql if an error occurs, though parsing
* of the schema will continue.
*
* @param bool $mode execute
* @return bool current continueOnError mode
*
* @see addSQL(), ExecuteSchema()
*/
function ContinueOnError( $mode = NULL ) {
if( is_bool( $mode ) ) {
$this->continueOnError = $mode;
}
return $this->continueOnError;
}
/**
* Loads an XML schema from a file and converts it to SQL.
*
* Call this method to load the specified schema (see the DTD for the proper format) from
* the filesystem and generate the SQL necessary to create the database described.
* @see ParseSchemaString()
*
* @param string $file Name of XML schema file.
* @param bool $returnSchema Return schema rather than parsing.
* @return array Array of SQL queries, ready to execute
*/
function ParseSchema( $filename, $returnSchema = FALSE ) {
return $this->ParseSchemaString( $this->ConvertSchemaFile( $filename ), $returnSchema );
}
/**
* Loads an XML schema from a file and converts it to SQL.
*
* Call this method to load the specified schema from a file (see the DTD for the proper format)
* and generate the SQL necessary to create the database described by the schema.
*
* @param string $file Name of XML schema file.
* @param bool $returnSchema Return schema rather than parsing.
* @return array Array of SQL queries, ready to execute.
*
* @deprecated Replaced by adoSchema::ParseSchema() and adoSchema::ParseSchemaString()
* @see ParseSchema(), ParseSchemaString()
*/
function ParseSchemaFile( $filename, $returnSchema = FALSE ) {
// Open the file
if( !($fp = fopen( $filename, 'r' )) ) {
// die( 'Unable to open file' );
return FALSE;
}
// do version detection here
if( $this->SchemaFileVersion( $filename ) != $this->schemaVersion ) {
return FALSE;
}
if ( $returnSchema )
{
return $xmlstring;
}
$this->success = 2;
$xmlParser = $this->create_parser();
// Process the file
while( $data = fread( $fp, 4096 ) ) {
if( !xml_parse( $xmlParser, $data, feof( $fp ) ) ) {
die( sprintf(
"XML error: %s at line %d",
xml_error_string( xml_get_error_code( $xmlParser) ),
xml_get_current_line_number( $xmlParser)
) );
}
}
xml_parser_free( $xmlParser );
return $this->sqlArray;
}
/**
* Converts an XML schema string to SQL.
*
* Call this method to parse a string containing an XML schema (see the DTD for the proper format)
* and generate the SQL necessary to create the database described by the schema.
* @see ParseSchema()
*
* @param string $xmlstring XML schema string.
* @param bool $returnSchema Return schema rather than parsing.
* @return array Array of SQL queries, ready to execute.
*/
function ParseSchemaString( $xmlstring, $returnSchema = FALSE ) {
if( !is_string( $xmlstring ) OR empty( $xmlstring ) ) {
return FALSE;
}
// do version detection here
if( $this->SchemaStringVersion( $xmlstring ) != $this->schemaVersion ) {
return FALSE;
}
if ( $returnSchema )
{
return $xmlstring;
}
$this->success = 2;
$xmlParser = $this->create_parser();
if( !xml_parse( $xmlParser, $xmlstring, TRUE ) ) {
die( sprintf(
"XML error: %s at line %d",
xml_error_string( xml_get_error_code( $xmlParser) ),
xml_get_current_line_number( $xmlParser)
) );
}
xml_parser_free( $xmlParser );
return $this->sqlArray;
}
/**
* Loads an XML schema from a file and converts it to uninstallation SQL.
*
* Call this method to load the specified schema (see the DTD for the proper format) from
* the filesystem and generate the SQL necessary to remove the database described.
* @see RemoveSchemaString()
*
* @param string $file Name of XML schema file.
* @param bool $returnSchema Return schema rather than parsing.
* @return array Array of SQL queries, ready to execute
*/
function RemoveSchema( $filename, $returnSchema = FALSE ) {
return $this->RemoveSchemaString( $this->ConvertSchemaFile( $filename ), $returnSchema );
}
/**
* Converts an XML schema string to uninstallation SQL.
*
* Call this method to parse a string containing an XML schema (see the DTD for the proper format)
* and generate the SQL necessary to uninstall the database described by the schema.
* @see RemoveSchema()
*
* @param string $schema XML schema string.
* @param bool $returnSchema Return schema rather than parsing.
* @return array Array of SQL queries, ready to execute.
*/
function RemoveSchemaString( $schema, $returnSchema = FALSE ) {
// grab current version
if( !( $version = $this->SchemaStringVersion( $schema ) ) ) {
return FALSE;
}
return $this->ParseSchemaString( $this->TransformSchema( $schema, 'remove-' . $version), $returnSchema );
}
/**
* Applies the current XML schema to the database (post execution).
*
* Call this method to apply the current schema (generally created by calling
* ParseSchema() or ParseSchemaString() ) to the database (creating the tables, indexes,
* and executing other SQL specified in the schema) after parsing.
* @see ParseSchema(), ParseSchemaString(), ExecuteInline()
*
* @param array $sqlArray Array of SQL statements that will be applied rather than
* the current schema.
* @param boolean $continueOnErr Continue to apply the schema even if an error occurs.
* @returns integer 0 if failure, 1 if errors, 2 if successful.
*/
function ExecuteSchema( $sqlArray = NULL, $continueOnErr = NULL ) {
if( !is_bool( $continueOnErr ) ) {
$continueOnErr = $this->ContinueOnError();
}
if( !isset( $sqlArray ) ) {
$sqlArray = $this->sqlArray;
}
if( !is_array( $sqlArray ) ) {
$this->success = 0;
} else {
$this->success = $this->dict->ExecuteSQLArray( $sqlArray, $continueOnErr );
}
return $this->success;
}
/**
* Returns the current SQL array.
*
* Call this method to fetch the array of SQL queries resulting from
* ParseSchema() or ParseSchemaString().
*
* @param string $format Format: HTML, TEXT, or NONE (PHP array)
* @return array Array of SQL statements or FALSE if an error occurs
*/
function PrintSQL( $format = 'NONE' ) {
return $this->getSQL( $format, $sqlArray );
}
/**
* Saves the current SQL array to the local filesystem as a list of SQL queries.
*
* Call this method to save the array of SQL queries (generally resulting from a
* parsed XML schema) to the filesystem.
*
* @param string $filename Path and name where the file should be saved.
* @return boolean TRUE if save is successful, else FALSE.
*/
function SaveSQL( $filename = './schema.sql' ) {
if( !isset( $sqlArray ) ) {
$sqlArray = $this->sqlArray;
}
if( !isset( $sqlArray ) ) {
return FALSE;
}
$fp = fopen( $filename, "w" );
foreach( $sqlArray as $key => $query ) {
fwrite( $fp, $query . ";\n" );
}
fclose( $fp );
}
/**
* Create an xml parser
*
* @return object PHP XML parser object
*
* @access private
*/
function &create_parser() {
// Create the parser
$xmlParser = xml_parser_create();
xml_set_object( $xmlParser, $this );
// Initialize the XML callback functions
xml_set_element_handler( $xmlParser, '_tag_open', '_tag_close' );
xml_set_character_data_handler( $xmlParser, '_tag_cdata' );
return $xmlParser;
}
/**
* XML Callback to process start elements
*
* @access private
*/
function _tag_open( &$parser, $tag, $attributes ) {
switch( strtoupper( $tag ) ) {
case 'TABLE':
$this->obj = new dbTable( $this, $attributes );
xml_set_object( $parser, $this->obj );
break;
case 'SQL':
if( !isset( $attributes['PLATFORM'] ) OR $this->supportedPlatform( $attributes['PLATFORM'] ) ) {
$this->obj = new dbQuerySet( $this, $attributes );
xml_set_object( $parser, $this->obj );
}
break;
default:
// print_r( array( $tag, $attributes ) );
}
}
/**
* XML Callback to process CDATA elements
*
* @access private
*/
function _tag_cdata( &$parser, $cdata ) {
}
/**
* XML Callback to process end elements
*
* @access private
* @internal
*/
function _tag_close( &$parser, $tag ) {
}
/**
* Converts an XML schema string to the specified DTD version.
*
* Call this method to convert a string containing an XML schema to a different AXMLS
* DTD version. For instance, to convert a schema created for an pre-1.0 version for
* AXMLS (DTD version 0.1) to a newer version of the DTD (e.g. 0.2). If no DTD version
* parameter is specified, the schema will be converted to the current DTD version.
* If the newFile parameter is provided, the converted schema will be written to the specified
* file.
* @see ConvertSchemaFile()
*
* @param string $schema String containing XML schema that will be converted.
* @param string $newVersion DTD version to convert to.
* @param string $newFile File name of (converted) output file.
* @return string Converted XML schema or FALSE if an error occurs.
*/
function ConvertSchemaString( $schema, $newVersion = NULL, $newFile = NULL ) {
// grab current version
if( !( $version = $this->SchemaStringVersion( $schema ) ) ) {
return FALSE;
}
if( !isset ($newVersion) ) {
$newVersion = $this->schemaVersion;
}
if( $version == $newVersion ) {
$result = $schema;
} else {
$result = $this->TransformSchema( $schema, 'convert-' . $version . '-' . $newVersion);
}
if( is_string( $result ) AND is_string( $newFile ) AND ( $fp = fopen( $newFile, 'w' ) ) ) {
fwrite( $fp, $result );
fclose( $fp );
}
return $result;
}
/**
* Converts an XML schema file to the specified DTD version.
*
* Call this method to convert the specified XML schema file to a different AXMLS
* DTD version. For instance, to convert a schema created for an pre-1.0 version for
* AXMLS (DTD version 0.1) to a newer version of the DTD (e.g. 0.2). If no DTD version
* parameter is specified, the schema will be converted to the current DTD version.
* If the newFile parameter is provided, the converted schema will be written to the specified
* file.
* @see ConvertSchemaString()
*
* @param string $filename Name of XML schema file that will be converted.
* @param string $newVersion DTD version to convert to.
* @param string $newFile File name of (converted) output file.
* @return string Converted XML schema or FALSE if an error occurs.
*/
function ConvertSchemaFile( $filename, $newVersion = NULL, $newFile = NULL ) {
// grab current version
if( !( $version = $this->SchemaFileVersion( $filename ) ) ) {
return FALSE;
}
if( !isset ($newVersion) ) {
$newVersion = $this->schemaVersion;
}
if( $version == $newVersion ) {
$result = file_get_contents( $filename );
// remove unicode BOM if present
if( substr( $result, 0, 3 ) == sprintf( '%c%c%c', 239, 187, 191 ) ) {
$result = substr( $result, 3 );
}
} else {
$result = $this->TransformSchema( $filename, 'convert-' . $version . '-' . $newVersion, 'file' );
}
if( is_string( $result ) AND is_string( $newFile ) AND ( $fp = fopen( $newFile, 'w' ) ) ) {
fwrite( $fp, $result );
fclose( $fp );
}
return $result;
}
function TransformSchema( $schema, $xsl, $schematype='string' )
{
// Fail if XSLT extension is not available
if( ! function_exists( 'xslt_create' ) ) {
return FALSE;
}
$xsl_file = dirname( __FILE__ ) . '/xsl/' . $xsl . '.xsl';
// look for xsl
if( !is_readable( $xsl_file ) ) {
return FALSE;
}
switch( $schematype )
{
case 'file':
if( !is_readable( $schema ) ) {
return FALSE;
}
$schema = file_get_contents( $schema );
break;
case 'string':
default:
if( !is_string( $schema ) ) {
return FALSE;
}
}
$arguments = array (
'/_xml' => $schema,
'/_xsl' => file_get_contents( $xsl_file )
);
// create an XSLT processor
$xh = xslt_create ();
// set error handler
xslt_set_error_handler ($xh, array (&$this, 'xslt_error_handler'));
// process the schema
$result = xslt_process ($xh, 'arg:/_xml', 'arg:/_xsl', NULL, $arguments);
xslt_free ($xh);
return $result;
}
/**
* Processes XSLT transformation errors
*
* @param object $parser XML parser object
* @param integer $errno Error number
* @param integer $level Error level
* @param array $fields Error information fields
*
* @access private
*/
function xslt_error_handler( $parser, $errno, $level, $fields ) {
if( is_array( $fields ) ) {
$msg = array(
'Message Type' => ucfirst( $fields['msgtype'] ),
'Message Code' => $fields['code'],
'Message' => $fields['msg'],
'Error Number' => $errno,
'Level' => $level
);
switch( $fields['URI'] ) {
case 'arg:/_xml':
$msg['Input'] = 'XML';
break;
case 'arg:/_xsl':
$msg['Input'] = 'XSL';
break;
default:
$msg['Input'] = $fields['URI'];
}
$msg['Line'] = $fields['line'];
} else {
$msg = array(
'Message Type' => 'Error',
'Error Number' => $errno,
'Level' => $level,
'Fields' => var_export( $fields, TRUE )
);
}
$error_details = $msg['Message Type'] . ' in XSLT Transformation' . "\n"
. '<table>' . "\n";
foreach( $msg as $label => $details ) {
$error_details .= '<tr><td><b>' . $label . ': </b></td><td>' . htmlentities( $details ) . '</td></tr>' . "\n";
}
$error_details .= '</table>';
trigger_error( $error_details, E_USER_ERROR );
}
/**
* Returns the AXMLS Schema Version of the requested XML schema file.
*
* Call this method to obtain the AXMLS DTD version of the requested XML schema file.
* @see SchemaStringVersion()
*
* @param string $filename AXMLS schema file
* @return string Schema version number or FALSE on error
*/
function SchemaFileVersion( $filename ) {
// Open the file
if( !($fp = fopen( $filename, 'r' )) ) {
// die( 'Unable to open file' );
return FALSE;
}
// Process the file
while( $data = fread( $fp, 4096 ) ) {
if( preg_match( $this->versionRegex, $data, $matches ) ) {
return !empty( $matches[2] ) ? $matches[2] : XMLS_DEFAULT_SCHEMA_VERSION;
}
}
return FALSE;
}
/**
* Returns the AXMLS Schema Version of the provided XML schema string.
*
* Call this method to obtain the AXMLS DTD version of the provided XML schema string.
* @see SchemaFileVersion()
*
* @param string $xmlstring XML schema string
* @return string Schema version number or FALSE on error
*/
function SchemaStringVersion( $xmlstring ) {
if( !is_string( $xmlstring ) OR empty( $xmlstring ) ) {
return FALSE;
}
if( preg_match( $this->versionRegex, $xmlstring, $matches ) ) {
return !empty( $matches[2] ) ? $matches[2] : XMLS_DEFAULT_SCHEMA_VERSION;
}
return FALSE;
}
/**
* Extracts an XML schema from an existing database.
*
* Call this method to create an XML schema string from an existing database.
* If the data parameter is set to TRUE, AXMLS will include the data from the database
* in the schema.
*
* @param boolean $data Include data in schema dump
* @return string Generated XML schema
*/
function ExtractSchema( $data = FALSE ) {
$old_mode = $this->db->SetFetchMode( ADODB_FETCH_NUM );
$schema = '<?xml version="1.0"?>' . "\n"
. '<schema version="' . $this->schemaVersion . '">' . "\n";
if( is_array( $tables = $this->db->MetaTables( 'TABLES' ) ) ) {
foreach( $tables as $table ) {
$schema .= ' <table name="' . $table . '">' . "\n";
// grab details from database
$rs = $this->db->Execute( 'SELECT * FROM ' . $table . ' WHERE 1=1' );
$fields = $this->db->MetaColumns( $table );
$indexes = $this->db->MetaIndexes( $table );
if( is_array( $fields ) ) {
foreach( $fields as $details ) {
$extra = '';
$content = array();
if( $details->max_length > 0 ) {
$extra .= ' size="' . $details->max_length . '"';
}
if( $details->primary_key ) {
$content[] = '<KEY/>';
} elseif( $details->not_null ) {
$content[] = '<NOTNULL/>';
}
if( $details->has_default ) {
$content[] = '<DEFAULT value="' . $details->default_value . '"/>';
}
if( $details->auto_increment ) {
$content[] = '<AUTOINCREMENT/>';
}
// this stops the creation of 'R' columns,
// AUTOINCREMENT is used to create auto columns
$details->primary_key = 0;
$type = $rs->MetaType( $details );
$schema .= ' <field name="' . $details->name . '" type="' . $type . '"' . $extra . '>';
if( !empty( $content ) ) {
$schema .= "\n " . implode( "\n ", $content ) . "\n ";
}
$schema .= '</field>' . "\n";
}
}
if( is_array( $indexes ) ) {
foreach( $indexes as $index => $details ) {
$schema .= ' <index name="' . $index . '">' . "\n";
if( $details['unique'] ) {
$schema .= ' <UNIQUE/>' . "\n";
}
foreach( $details['columns'] as $column ) {
$schema .= ' <col>' . $column . '</col>' . "\n";
}
$schema .= ' </index>' . "\n";
}
}
if( $data ) {
$rs = $this->db->Execute( 'SELECT * FROM ' . $table );
if( is_object( $rs ) ) {
$schema .= ' <data>' . "\n";
while( $row = $rs->FetchRow() ) {
foreach( $row as $key => $val ) {
$row[$key] = htmlentities($val);
}
$schema .= ' <row><f>' . implode( '</f><f>', $row ) . '</f></row>' . "\n";
}
$schema .= ' </data>' . "\n";
}
}
$schema .= ' </table>' . "\n";
}
}
$this->db->SetFetchMode( $old_mode );
$schema .= '</schema>';
return $schema;
}
/**
* Sets a prefix for database objects
*
* Call this method to set a standard prefix that will be prepended to all database tables
* and indices when the schema is parsed. Calling setPrefix with no arguments clears the prefix.
*
* @param string $prefix Prefix that will be prepended.
* @param boolean $underscore If TRUE, automatically append an underscore character to the prefix.
* @return boolean TRUE if successful, else FALSE
*/
function SetPrefix( $prefix = '', $underscore = TRUE ) {
switch( TRUE ) {
// clear prefix
case empty( $prefix ):
logMsg( 'Cleared prefix' );
$this->objectPrefix = '';
return TRUE;
// prefix too long
case strlen( $prefix ) > XMLS_PREFIX_MAXLEN:
// prefix contains invalid characters
case !preg_match( '/^[a-z][a-z0-9_]+$/i', $prefix ):
logMsg( 'Invalid prefix: ' . $prefix );
return FALSE;
}
if( $underscore AND substr( $prefix, -1 ) != '_' ) {
$prefix .= '_';
}
// prefix valid
logMsg( 'Set prefix: ' . $prefix );
$this->objectPrefix = $prefix;
return TRUE;
}
/**
* Returns an object name with the current prefix prepended.
*
* @param string $name Name
* @return string Prefixed name
*
* @access private
*/
function prefix( $name = '' ) {
// if prefix is set
if( !empty( $this->objectPrefix ) ) {
// Prepend the object prefix to the table name
// prepend after quote if used
return preg_replace( '/^(`?)(.+)$/', '$1' . $this->objectPrefix . '$2', $name );
}
// No prefix set. Use name provided.
return $name;
}
/**
* Checks if element references a specific platform
*
* @param string $platform Requested platform
* @returns boolean TRUE if platform check succeeds
*
* @access private
*/
function supportedPlatform( $platform = NULL ) {
$regex = '/^(\w*\|)*' . $this->db->databaseType . '(\|\w*)*$/';
if( !isset( $platform ) OR preg_match( $regex, $platform ) ) {
logMsg( "Platform $platform is supported" );
return TRUE;
} else {
logMsg( "Platform $platform is NOT supported" );
return FALSE;
}
}
/**
* Clears the array of generated SQL.
*
* @access private
*/
function clearSQL() {
$this->sqlArray = array();
}
/**
* Adds SQL into the SQL array.
*
* @param mixed $sql SQL to Add
* @return boolean TRUE if successful, else FALSE.
*
* @access private
*/
function addSQL( $sql = NULL ) {
if( is_array( $sql ) ) {
foreach( $sql as $line ) {
$this->addSQL( $line );
}
return TRUE;
}
if( is_string( $sql ) ) {
$this->sqlArray[] = $sql;
// if executeInline is enabled, and either no errors have occurred or continueOnError is enabled, execute SQL.
if( $this->ExecuteInline() && ( $this->success == 2 || $this->ContinueOnError() ) ) {
$saved = $this->db->debug;
$this->db->debug = $this->debug;
$ok = $this->db->Execute( $sql );
$this->db->debug = $saved;
if( !$ok ) {
if( $this->debug ) {
ADOConnection::outp( $this->db->ErrorMsg() );
}
$this->success = 1;
}
}
return TRUE;
}
return FALSE;
}
/**
* Gets the SQL array in the specified format.
*
* @param string $format Format
* @return mixed SQL
*
* @access private
*/
function getSQL( $format = NULL, $sqlArray = NULL ) {
if( !is_array( $sqlArray ) ) {
$sqlArray = $this->sqlArray;
}
if( !is_array( $sqlArray ) ) {
return FALSE;
}
switch( strtolower( $format ) ) {
case 'string':
case 'text':
return !empty( $sqlArray ) ? implode( ";\n\n", $sqlArray ) . ';' : '';
case'html':
return !empty( $sqlArray ) ? nl2br( htmlentities( implode( ";\n\n", $sqlArray ) . ';' ) ) : '';
}
return $this->sqlArray;
}
/**
* Destroys an adoSchema object.
*
* Call this method to clean up after an adoSchema object that is no longer in use.
* @deprecated adoSchema now cleans up automatically.
*/
function Destroy() {
set_magic_quotes_runtime( $this->mgq );
unset( $this );
}
}
/**
* Message logging function
*
* @access private
*/
function logMsg( $msg, $title = NULL, $force = FALSE ) {
if( XMLS_DEBUG or $force ) {
echo '<pre>';
if( isset( $title ) ) {
echo '<h3>' . htmlentities( $title ) . '</h3>';
}
if( is_object( $this ) ) {
echo '[' . get_class( $this ) . '] ';
}
print_r( $msg );
echo '</pre>';
}
}
?>
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