/
Relationship.php
2193 lines (1855 loc) · 73.4 KB
/
Relationship.php
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<?php
/*-------------------------------------------------------------------------------
* Xataface Web Application Framework
* Copyright (C) 2005-2008 Web Lite Solutions Corp (shannah@sfu.ca)
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*-------------------------------------------------------------------------------
*/
/**
* @ingroup databaseAbstractionAPI
*/
/**
* File: Dataface/Relationship.php
* Author: Steve Hannah <shannah@sfu.ca>
* Created: October 2005
*
* Description:
* -------------
* Encapsulates a relationship between two tables.
*
*/
class Dataface_Relationship {
/*
* The name of the relationship.
*/
var $_name;
/*
* Reference to the source table of the relationship.
*/
var $_sourceTable;
/*
* Arrayh of references to the destination tables of the relationship.
*/
var $_destinationTables;
/*
* An associative array mapping field names to tables.
*/
var $_fieldTableLookup;
/*
* A Descriptor array to describe the relationship.
*/
var $_schema;
/*
* The key fields of the relationship.
*/
var $_keys;
var $_field_def_overrides = array();
/**
* Flag to indicate whether or not the sql has been generated. (Used in particular
* by the getSQL() method.
*
* @type boolean
*/
var $_sql_generated = array();
var $_permissions = array();
var $app;
/**
* @var array Stores cached method results.
* @since 0.6.1
*/
var $_cache=array();
var $addNew;
var $addExisting;
/**
*
* Constructor for the relationship.
*
* @param $tablename The name of the source table.
* @wparam $relationshipName The name of the relationship
* @param An array of initializing values. Usually produced by parsing the relationships.ini
* file.
*
*/
function __construct($tablename, $relationshipName, &$values){
$this->app =& Dataface_Application::getInstance();
$this->_name = $relationshipName;
$this->_sourceTable =& Dataface_Table::loadTable($tablename);
$this->_schema = array();
$res = $this->_init($values);
if ( PEAR::isError($res) ){
throw new Exception($res->getMessage());
}
if ( !isset($this->_schema['permissions']) ){
$app =& Dataface_Application::getInstance();
$this->_schema['permissions'] = Dataface_PermissionsTool::getRolePermissions($app->_conf['default_relationship_role']);
}
$this->_permissions =& $this->_schema['permissions'];
}
function Dataface_Relationship($tablename, $relationshipName, &$values) { self::__construct($tablename, $relationshipName, $values); }
function &getFieldDefOverride($field_name, $default=array()){
if ( strpos($field_name,'.') !== false ){
list($rname,$field_name) = explode('.', $field_name);
}
if ( isset($this->_field_def_overrides[$field_name]) ){
return $this->_field_def_overrides[$field_name];
} else {
return $default;
}
}
function setFieldDefOverride($field_name, array $field_def){
if ( strpos($field_name,'.') !== false ){
list($rname,$field_name) = explode('.', $field_name);
}
$this->_field_def_overrides[$field_name] = $field_def;
}
function isLinkToDomainRecord() {
return !empty($this->_schema['list']['link_to_domain_record']) and $this->_schema['list']['link_to_domain_record'];
}
/**
* Returns an array of names of fields in this relationship.
* @param boolean $includeAll Whether to include all table fields
* involved. By default, only the specified columns are returned.
* If this flag is set to true, then all fields from all destination
* tables will be returned - including grafted fields.
*
* @returns array
*/
function &fields($includeAll=false, $includeTransient=false){
if ( !$includeAll ){
return $this->_schema['columns'];
} else {
if ( !isset($this->_cache[__FUNCTION__][intval($includeAll)][intval($includeTransient)]) ){
$tables =& $this->getDestinationTables();
$out = array();
$used_names = array();
foreach ( array_keys($tables) as $i ){
foreach ( $tables[$i]->fields(false,true, $includeTransient) as $fld ){
if ( @$fld['grafted'] and @$used_names[$fld['Field']] ) continue;
// We don't want grafted fields overwriting valid fields in
// other tables.
$out[] = $tables[$i]->tablename.'.'.$fld['Field'];
$used_names[ $fld['Field'] ] = 1;
}
}
$this->_cache[__FUNCTION__][intval($includeAll)][intval($includeTransient)] = $out;
}
return $this->_cache[__FUNCTION__][intval($includeAll)][intval($includeTransient)];
}
}
function getCardinality(){
if ( isset($this->_schema['__cardinality__']) ){
return $this->_schema['__cardinality__'];
} else {
return '*';
}
}
/**
*
* Checks to see if the relationship has a field named $fieldname.
*
* @param string $fieldname The name of the field that we are checking. This may be an absolute
* name or a relative name.
* @param boolean $checkAll If this is true then the method will return true
* if the field exists in the destination tables (even if the field is grafted).
* Otherwise it will only return true if the field is explicitly part of the
* relationship.
* e.g.
* __sql__ = "select personID, firstName from people where groupID='$groupID'"
*
* In this relationship the lastName field may be part of the people table,
* but it is not explicitly selected in the relationship.
* So if we issue:
* <code>
* $relationship->hasField('people.lastName'); // false
* $relationship->hasField('people.lastName', true); //true
* </code>
* @returns boolean
*
*/
function hasField($fieldname, $checkAll=false, $includeTransient=false){
if ( strpos($fieldname,'.') === false ){
if (in_array($fieldname, $this->_schema['short_columns'] ) ) return true;
if ( ($checkAll or $includeTransient) and preg_grep('/\.'.preg_quote($fieldname, '/').'$/', $this->fields($checkAll, $includeTransient))){
return true;
}
return false;
} else {
return in_array( $fieldname, $this->fields($checkAll, $includeTransient) );
}
}
/**
*
* Initializes the relationship given an associative array of values that is produced
* by parsing the relationships.ini file.
*
* @param $rel_values Initializing parameters for relationship. Possible keys include:
* __sql__ : An sql query to define the relationship.
*
*
*/
function _init(&$rel_values){
$r =& $this->_schema;
/*
* First we will check the array for parameters. Parameters might include
* default values for new records in the relationship - or for existing records
* in the relationship.
*/
foreach ($rel_values as $key=>$value){
if ( strpos($key,":") !== false ){
$path = explode(":", $key);
$len = count($path);
$val =& $r;
for ($i=0; $i<$len; $i++ ){
//if (!isset($val[$path[$i]]) ){
if ( $i == $len -1 ) $val[$path[$i]] = $value;
else {
if ( !isset($val[$path[$i]]) ) {
$val[$path[$i]] = array();
}
$valTemp =& $val;
unset($val);
$val =& $valTemp[$path[$i]];
unset($valTemp);
}
//}
}
}
}
if ( isset($rel_values['__cardinality__']) ) $r['__cardinality__'] = $rel_values['__cardinality__'];
if ( array_key_exists( '__sql__', $rel_values ) ){
// The relationship was defined using an SQL statement
$r['sql'] = $rel_values['__sql__'];
$matches = array();
/* MOD START 051021 - shannah@sfu.ca - Using PEAR SQL parser package instead of regexes. */
$parser = new SQL_Parser();
$struct = $parser->parse($r['sql']);
if ( PEAR::isError($struct) ){
error_log($struct->toString()."\n".implode("\n", $struct->getBacktrace()));
throw new Exception("Failed to parse relationship SQ. See error log for details.", E_USER_ERROR);
}
$parser_wrapper = new SQL_Parser_wrapper($struct);
$parser_wrapper->fixColumns();
$r['parsed_sql'] =& $struct;
$r['tables'] = $struct['table_names'];
$r['columns'] = $struct['column_names'];
foreach ($struct['columns'] as $colstruct){
if ( $colstruct['type'] == 'ident' and @$colstruct['alias'] ){
$r['aliases'][$colstruct['value']] = $colstruct['alias'];
}
}
$temp = array();
foreach ( $r['columns'] as $column ){
$col = $parser_wrapper->resolveColumnName($column);
if (preg_match('/\.$/', $col) ){
$col = $col.'*';
}
$temp[] = $col;
}
$r['columns'] = $temp;
unset($struct);
unset($temp);
/* MOD END 051021 */
} else {
// The relationship was not defined using SQL. It merely defines match columns
// and select columns
$select = '*';
// Default selection to all columns
$customSelect = false;
$selectArr = null;
if ( array_key_exists( '__select__', $rel_values ) ){
// __select__ should be comma-delimited list of column names.
$select = $rel_values['__select__'];
$customSelect = true;
$selectArr = array_map('trim', explode(',', $select));
$len = count($selectArr);
for ($i=0; $i<$len; $i++) {
$selectArr[$i] = str_replace('`', '', $selectArr[$i]);
}
}
$tables = array();
// stores list of table names involved in this relation
// Let's generate an SQL query based on the information given
//
$from = 'from ';
// from portion of generated sql query
$where = 'where ';
// where portion of generated sql query
foreach ( $rel_values as $c1 => $c2 ){
// Iterate through all of the match columns of the relationship
if ( in_array( $c1, array('__sql__', '__select__', '__sort__','__domain__','__cardinality__') ) ) continue;
// special flags like sql, select, and sort are not column matchings.. we skip them.
if ( strpos( $c1, ":" ) !== false ) continue;
// This is a parameter so we ignore it.
// get the paths of the related columns
// Match columns may be given as Table_name.Column_name dotted pairs... we need to separate
// the tablenames from the column names.
$p1 = explode( '.', $c1);
$p2 = explode('.', $c2);
if ( count( $p1 ) == 1 ){
// Only column name is given.. we assume the tablename is the current table.
array_unshift( $p1, $this->_sourceTable->tablename );
}
if ( count($p2) ==1 ){
// Only the column name is given for rhs... assume current table name.
array_unshift( $p2, $this->_sourceTable->tablename );
}
// add the tables to our table array... we omit the current table though.
if ( !in_array( $p1[0], $tables ) && $p1[0] != $this->_sourceTable->tablename) $tables[] = $p1[0];
if ( !in_array( $p2[0], $tables ) && $p2[0] != $this->_sourceTable->tablename) $tables[] = $p2[0];
$lhsConstant = true;
// Simplify references to current table to be replaced by variable value
if( $p1[0] == $this->_sourceTable->tablename ){
$lhs = "'\$$p1[1]'";
} else {
$lhs = "$p1[0].$p1[1]";
$lhsConstant = false;
}
$rhsConstant = true;
if ( $p2[0] == $this->_sourceTable->tablename ){
if ( strpos($p2[1], '$')===0){
$var = '';
} else {
$var = '$';
}
$rhs = "'".$var.$p2[1]."'";
} else {
$rhs = "$p2[0].$p2[1]";
$rhsConstant = false;
}
// append condition to where clause
$where .= strlen($where) > 6 ? ' and ' : '';
$where .= "$lhs=$rhs";
if ($customSelect) {
// There was a custom __select__ directive
// so they may have omitted
if (!$lhsConstant) {
if (!in_array($lhs, $selectArr) and !in_array($p1[1], $selectArr)) {
$select .= ", ".$lhs;
}
}
if (!$rhsConstant) {
if (!in_array($rhs, $selectArr) and !in_array($p2[1], $selectArr)) {
$select .= ", ".$rhs;
}
}
}
}
foreach ($tables as $table){
$from .= '`'.$table.'`, ';
}
$from = substr( $from, 0, strlen($from)-2);
$r['sql'] = "select $select $from $where";
/* MOD START 051021 - shannah@sfu.ca - Using PEAR SQL parser package instead of regexes. */
$parser = new SQL_Parser(null, 'MySQL');
$struct = $parser->parse($r['sql']);
$parser_wrapper = new SQL_Parser_wrapper($struct, 'MySQL');
$parser_wrapper->fixColumns();
$r['parsed_sql'] =& $struct;
$r['tables'] = $struct['table_names'];
$r['columns'] = $struct['column_names'];
$temp = array();
foreach ( $r['columns'] as $column ){
$col = $parser_wrapper->resolveColumnName($column);
if (preg_match('/\.$/', $col) ){
$col = $col.'*';
}
$temp[] = $col;
}
$r['columns'] = $temp;
unset($struct);
}
$res = $this->_normalizeColumns();
if ( PEAR::isError($res) ) return $res;
$r['short_columns'] = array();
foreach ($r['columns'] as $col ){
list($table,$col) = explode('.', $col);
$r['short_columns'][] = $col;
}
}
function getLogoField() {
$domainTable = Dataface_Table::loadTable($this->getDomainTable());
return $domainTable->getLogoField();
}
/**
* Scans the columns of a relationship and resolves wildcards and unqualified
* column names into fully qualified column names.
*/
function _normalizeColumns(){
$rel =& $this->_schema;
$tables =& $rel['tables'];
$selected_tables = array();
$rel['selected_tables'] =& $selected_tables;
// contains a list of the tables that actually have values returned in the select statement
$len = sizeof($rel['columns']);
for ($i=0; $i<sizeof($rel['columns']); $i++){
$matches = array();
// Case 1: This column has a wildcard. eg: Profiles.* or just simply *
if ( preg_match('/^(\w+\.){0,1}\*$/', $rel['columns'][$i], $matches) ){
// we are returning all columns from a particular table
if ( isset( $matches[1]) ){
$table = $matches[1];
$temp_tables = array();
$temp_tables[] = substr($table, 0, strlen($table)-1);
} else {
$temp_tables = $tables;
}
$temp_columns = array();
// go through each table requested, and extract its columns
foreach ($temp_tables as $table){
$table_table =& Dataface_Table::loadTable($table, $this->_sourceTable->db);
if ( PEAR::isError($table_table) ){
$table_table->addUserInfo("Failed to load table for table '$table'");
return $table_shema;
}
$fields = array_keys($table_table->fields());
for ($j=0; $j<count($fields); $j++){
$fields[$j] = $table.'.'.$fields[$j];
}
$temp_columns = array_merge($temp_columns, $fields);
if ( !in_array( $table, $selected_tables ) ){
$selected_tables[] = $table;
}
}
// We need to add all of the columns that we found to the persistent columns list for this relationship.
// But we need to remove the entry with the '*' because it is meaningless from here on out.
// Case A: We are at the first element
if ( $i==0 ){
$rel['columns'] = array_merge( $temp_columns, array_slice( $rel['columns'], 1, $len-1) );
// Case B: We are at the last element
} else if ( $i==$len-1 ){
$rel['columns'] = array_merge( $rel['columns'], $temp_columns );
$len = sizeof($rel['columns']);
$i = $len-1;
// increment the counter so that we don't repeat all of the ones we just created.
// Case C: We are somewhere in the middle of the columns list
} else {
$rel['columns'] = array_merge( array_slice( $rel['columns'], 0, $i),
$temp_columns,
array_slice( $rel['columns'], $i+1, $len-$i-1) );
$len = sizeof($rel['columns']);
$i = $i + sizeof($temp_columns) -1;
// increment the counter so that we don't repeat all of the ones we just created.
}
unset($table_table);
// to keep us from doing damage
// Case 2: This is a fully qualified column address.
} else if ( preg_match('/^(\w+)\.(\w+)$/', $rel['columns'][$i], $matches) ) {
$table = $matches[1];
$column = $matches[2];
$table_table =& Dataface_Table::loadTable($table, $this->_sourceTable->db);
if ( PEAR::isError($table_table) ){
$table_table->addUserInfo("Failed to load table for table '$table'");
error_log($table_table->toString()."\n".implode("\n", $table_table->getBacktrace()));
throw new Exception("Failed to validate column ".$rel['columns'][$i].". See error log for details.", E_USER_ERROR);
}
$selected_tables[] = $table;
// this column is ok and already absolute.
// Case 3: This column is specified by only a column name - needs to be made absolute.
} else {
// it is just a single column declaration
$name = Dataface_Table::absoluteFieldName($rel['columns'][$i], $tables, $this->_sourceTable->db);
if ( PEAR::isError($name) ){
$name->addUserInfo("Failed get absolute field name for '".$rel['columns'][$i]."'");
return $name;
}
$rel['columns'][$i] = $name;
$matches = array();
if ( preg_match('/(\w+)\.(\w+)/', $name, $matches)){
$selected_tables[] = $matches[1];
} else {
PEAR::raiseError(Dataface_SCHEMA_PARSE_ERROR,null,null,null,"Error parsing table name from '$name' ");
}
}
}
$this->_schema['selected_tables'] = array_unique($this->_schema['selected_tables']);
}
function getName(){
return $this->_name;
}
private function findDuplicateColumns($tableNames) {
$out = array();
$colTable = array();
foreach ($tableNames as $t) {
$tt = Dataface_Table::loadTable($t);
foreach (array_keys($tt->fields()) as $f) {
if (isset($out[$f])) $out[$f]++;
else $out[$f] = 1;
if (!isset($colTable[$f])) {
$colTable[$f] = $t;
}
}
}
$out2 = array();
foreach ($out as $key=>$num) {
if ($num > 1) {
$out2[$key] = $colTable[$key];
}
}
return $out2;
}
function where($query) {
$app = Dataface_Application::getInstance();
if (isset($query['-related:search'])) {
$rwhere = array();
foreach ($this->fields(true) as $rfield) {
$rwhere[] = '`' . str_replace('.', '`.`', $rfield) . '` LIKE \'%' . addslashes($query['-related:search']) . '%\'';
}
$rwhere = implode(' OR ', $rwhere);
} else {
$rwhere = 0;
}
//echo $rwhere;
$column_search_keys = preg_grep('/^-related:s:[a-zA-Z_0-9]+$/', array_keys($query));
$terms = array();
$filters = [];
foreach ( $column_search_keys as $search_key ){
$field_name = substr($search_key, strrpos($search_key, ':')+1);
if ( $this->hasField($field_name, true) ){
$field = $this->getField($field_name);
$field_table = Dataface_Table::loadTable($field['tablename']);
$fval = $query[$search_key];
$exact = false;
if ($fval and $fval[0] == '=') {
$exact = true;
$fval = substr($fval,1);
}
if ( !is_numeric($query[$search_key]) and ($field_table->isChar($field['name']) or $field_table->isText($field['name'])) ){
if ($exact) {
$terms[] = '`'.$field['tablename'].'`.`'.$field_name.'` LIKE \''.addslashes($fval).'\'';
} else {
$terms[] = '`'.$field['tablename'].'`.`'.$field_name.'` LIKE \'%'.addslashes($fval).'%\'';
}
} else {
$terms[] = '`'.$field['tablename'].'`.`'.$field_name.'`=\''.addslashes($fval).'\'';
}
$filter_info = array(
'field_name' => $field_name,
'field_label' => $field['widget']['label'],
'field_value' => $query[$search_key],
'field_display_value' => $query[$search_key],
'url' => $app->url('-related:s:'.$field_name.'=')
);
if ( @$field['vocabulary'] ){
$vlkey = $filter_info['field_value'];
if ( preg_match('/^\,(\d+)\,$/', $vlkey, $matches) ){
$vlkey = $matches[1];
}
$valuelist =& $field_table->getValuelist($field['vocabulary']);
if ( isset($valuelist[$vlkey]) ){
$filter_info['field_display_value'] = $valuelist[$vlkey];
}
unset($valuelist);
unset($field_table);
} else if ($field_table->getDisplayField($field_name) !== $field_name){
$dummyRecord = df_get_record($field['tablename'], array($field_name=>'='.$query[$search_key]));
if ($dummyRecord){
$filter_info['field_display_value'] = $dummyRecord->display($field_name);
}
unset($dummyRecord);
}
$filters[] = $filter_info;
}
}
if ( $terms ){
if ( $rwhere === 0 ){
$rwhere = implode(' AND ', $terms);
} else {
$rwhere = '('.$rwhere.') AND '.implode(' AND ', $terms);
}
}
//echo $rwhere;exit;
return [
'where' => $rwhere,
'filters' => $filters
];
}
/**
*
* Returns the SQL query that can be used to obtain the related records of this
* relationship. Note that the value returned from this method cannot be passed
* directly to xf_db_query(). It may still have unresolved wildcards and must
* be passed through Dataface_Record::parseString() to replace all wildcards.
*
* @param getBlobs If true then Blob columns will also be returned. Default is false.
* @type boolean
*
* @returns SQL Query
* @type string
*/
function getSQL($getBlobs=false, $where=0, $sort=0, $preview=1){
$nocache = false;
$override_columns = null;
if (is_array($getBlobs)) {
$nocache = true;
$override_columns = @$getBlobs['override_columns'];
$getBlobs = false;
}
$start = microtime_float();
import(XFLIB.'SQL/Compiler.php');
import( XFROOT.'SQL/Parser/wrapper.php');
$loadParserTime = microtime_float() - $start;
if (is_array($where)) {
$where = $this->where($where);
$where = $where['where'];
}
if (is_array($sort)) {
$query = $sort;
if (isset($query['-related:sort'])) {
$sortcols = explode(',', trim($query['-related:sort']));
$sort_columns = array();
foreach ($sortcols as $sortcol) {
$sortcol = trim($sortcol);
if (strlen($sortcol) === 0)
continue;
$sortcol = explode(' ', $sortcol);
if (count($sortcol) > 1) {
$sort_columns[$sortcol[0]] = strtolower($sortcol[1]);
} else {
$sort_columns[$sortcol[0]] = 'asc';
}
break;
}
unset($sortcols);
} else {
$sort_columns = array();
}
$sort_columns_arr = array();
foreach ($sort_columns as $colkey => $colorder) {
$sort_columns_arr[] = '`' . $colkey . '`' . $colorder;
}
if (count($sort_columns_arr) > 0) {
$sort_columns_str = implode(', ', $sort_columns_arr);
} else {
$sort_columns_str = 0;
}
$sort = $sort_columns_str;
unset($sort_columns_str);
unset($sort_columns_arr);
}
if ( !$nocache and isset($this->_sql_generated[$where][$sort][$preview]) and $this->_sql_generated[$where][$sort][$preview] ){
/*
* The SQL has already been generated and stored. We can just return it.
*/
if ( $getBlobs ){
// We will be returning blob columns as well
return $this->_schema['sql_with_blobs'][$where][$sort][$preview];
} else {
// We will NOT be returning BLOB columns
return $this->_schema['sql_without_blobs'][$where][$sort][$preview];
}
} else {
/*
* The SQL has not been generated yet. We will generate it.
*/
if (!$nocache) {
$this->_sql_generated[$where][$sort][$preview] = true;
if ( !isset( $this->_schema['sql_without_blobs'] ) ){
$this->_schema['sql_without_blobs'] = array();
}
if ( !isset($this->_schema['sql_with_blobs']) ){
$this->_schema['sql_with_blobs'] = array();
}
}
if ( !$nocache and defined('DATAFACE_USE_CACHE') and DATAFACE_USE_CACHE ){
$cache_key_blobs = 'tables/'.$this->_sourceTable->tablename.'/relationships/'.$this->_name.'/sql/withblobs';
$cache_key_noblobs = 'tables/'.$this->_sourceTable->tablename.'/relationships/'.$this->_name.'/sql/withoutblobs';
// we are using the APC cache
import( XFROOT.'Dataface/Cache.php');
$cache =& Dataface_Cache::getInstance();
$this->_schema['sql_with_blobs'] = $cache->get($cache_key_blobs);
$this->_schema['sql_without_blobs'] = $cache->get($cache_key_noblobs);
}
if ( $nocache or !isset($this->_schema['sql_without_blobs'][$where][$sort][$preview]) or !isset($this->_schema['sql_with_blobs'][$where][$sort][$preview])){
//if ( !$this->_schema['sql_without_blobs'][$where][$sort] ) $this->_schema['sql_without_blobs'] = array();
//if ( !$this->_schema['sql_with_blobs'] ) $this->_schema['sql_with_blobs'] = array();
$parsed = unserialize(serialize($this->_schema['parsed_sql']));
$parsed['column_names'] = array();
$parsed['column_aliases'] = array();
$parsed['columns'] = array();
$wrapper = new SQL_Parser_wrapper($parsed, 'MySQL');
$blobCols = array();
$tableAliases = array();
// For tables that have custom SQL defined we sub in its SQL
// here.
foreach ( array_keys($parsed['tables']) as $tkey ){
if ( $parsed['tables'][$tkey]['type'] == 'ident' ){
$table =& Dataface_Table::loadTable($parsed['tables'][$tkey]['value']);
$proxyView = $table->getProxyView();
$tsql = $table->sql();
if ( isset($tsql) and !$proxyView){
$parsed['tables'][$tkey]['type'] = 'compiled_subselect';
$parsed['tables'][$tkey]['value'] = $tsql;
if ( !$parsed['tables'][$tkey]['alias'] ) $parsed['tables'][$tkey]['alias'] = $table->tablename;
} else if ( $proxyView ){
$parsed['tables'][$tkey]['value'] = $proxyView;
if ( !$parsed['tables'][$tkey]['alias'] ) $parsed['tables'][$tkey]['alias'] = $table->tablename;
}
$tableAliases[$table->tablename] = $parsed['tables'][$tkey]['alias'];
unset($table);
unset($tsql);
}
}
$done = array();
$dups = array();
//print_r($this->fields(true));
foreach ( $this->fields(true) as $colname){
// We go through each column in the query and add meta columns for length.
//$table =& Dataface_Table::getTableTableForField($colname);
list($tablename, $col) = explode('.',$colname);
if ( $tablename != $this->getDomainTable() and Dataface_Table::loadTable($this->getDomainTable())->hasField($col) ){
// If this is a duplicate field we take the domain table value.
$dups[$col] = $this->getDomainTable();
continue;
}
if ( isset($done[$col]) ) $dups[$col] = $tablename;
$done[$col] = true;
$table =& Dataface_Table::loadTable($tablename);
$alias = $wrapper->getTableAlias($tablename);
if ( !$alias ){
$alias = $tablename;
}
$colname = $alias.'.'.$col;
if ( isset($field) ) unset($field);
$field =& $table->getField($col);
if ( PEAR::isError($field) ) $field = array();
if ( $table->isPassword($col) ){
unset($table);
continue;
}
if ( $table->isBlob($col) ){
$blobCols[] = $colname;
}
if ( @$tableAliases[$tablename] ){
$tableAlias = $tableAliases[$tablename];
} else {
$tableAlias = $tablename;
}
if ( $tableAlias ) {
$colFull = '`'.$tableAlias.'`.`'.$col.'`';
//echo "Full";
}
else {
$colFull = '`'.$col.'`';
}
$rfieldProps = array();
if ( isset($this->_schema['field']) and isset($this->_schema['field'][$col])){
$rfieldProps = $this->_schema['field'][$col];
}
$maxlen = 255;
if ( @$rfieldProps['max_length'] ){
$maxlen = intval($rfieldProps['max_length']);
}
if ( in_array(strtolower($table->getType($col)), array('timestamp','datetime')) ){
$parsed['columns'][] = array('type'=>'compiled_func', 'table'=>null, 'value'=>"ifnull(convert_tz(".$colFull.",'SYSTEM','".addslashes(df_tz_or_offset())."'), ".$colFull.")", 'alias'=>$col);
} else if ( $preview and $table->isText($col) and !@$field['struct'] and !$table->isXML($col)){
$parsed['columns'][] = array('type'=>'compiled_func', 'table'=>null, 'value'=>"SUBSTRING($colFull, 1, $maxlen)", 'alias'=>$col);
} else {
$parsed['columns'][] = array('type'=>'ident', 'table'=>$tableAlias, 'value'=>$col, 'alias'=>null);
}
//$wrapper->addMetaDataColumn($colname);
// Note: Removed *length* metadata columns for now.. not hard to add
// back. Will wait to see if anyone screams!
// Steve Hannah 071229
unset($table);
}
if ( $where !== 0 ){
$whereClause = $where;
$dupCols = $this->findDuplicateColumns(array_keys($tableAliases));
// Avoid ambiguous column error. Any duplicate columns need to be specified.
foreach ( $dupCols as $dcolname=>$dtablename ){
$talias = @$tableAliases[$dtablename] ? $tableAliases[$dtablename] : $dtablename;
$whereClause = preg_replace('/([^.]|^) *`'.preg_quote($dcolname).'`/','$1 `'.$talias.'`.`'.$dcolname.'`', $whereClause);
}
foreach ( $dups as $dcolname=>$dtablename ){
$whereClause = preg_replace('/([^.]|^) *`'.preg_quote($dcolname).'`/','$1 `'.$dtablename.'`.`'.$dcolname.'`', $whereClause);
}
//print_r($dupCols);
//echo $whereClause;exit;
$wrapper->addWhereClause($whereClause);
}
if ( $sort !==0){
$sortClause = $sort;
foreach ( $dups as $dcolname=>$dtablename ){
$sortClause = preg_replace('/([^.]|^) *`'.preg_quote($dcolname).'`/','$1 `'.$dtablename.'`.`'.$dcolname.'`', $sortClause);
}
$wrapper->setSortClause($sortClause);
}
//$compiler = new SQL_Compiler(null, 'mysql');
$compiler =& SQL_Compiler::newInstance('mysql');
$compiler->version = 2;
$sql_with_blobs = null;
if ($nocache and $override_columns) {
$wrapper->removeAllColumns();
foreach ($override_columns as $override_column) {
$wrapper->addColumn($override_column, null);
}
}
if (!$nocache) {
$this->_schema['sql_with_blobs'][$where][$sort][$preview] = $sql_with_blobs = $compiler->compile($parsed);
} else if ($getBlobs) {
$sql_with_blobs = $compiler->compile($parsed);
}
foreach ($blobCols as $blobCol){
$wrapper->removeColumn($blobCol);
}
if (!$nocache) {
$this->_schema['sql_without_blobs'][$where][$sort][$preview] = $sql_without_blobs = $compiler->compile($parsed);
} else if (!$getBlobs) {
$sql_without_blobs = $compiler->compile($parsed);
}
if ( !$nocache and defined('DATAFACE_USE_CACHE') and DATAFACE_USE_CACHE){
$cache->set($cache_key_blobs, $this->_schema['sql_with_blobs']);
$cache->set($cache_key_noblobs, $this->_schema['sql_without_blobs']);
}
if ($nocache) {
if ($getBlobs) {
return $sql_with_blobs;
} else {
return $sql_without_blobs;
}
}
}
/*
* Now that the SQL is generated we can call ourselves and the first
* case will now be initiated (ie: the generated sql will be returned).
*/
$timeToGenerate = microtime_float()-$start;
if ( DATAFACE_DEBUG ){
$this->app->addDebugInfo("Time to generate sql for relationship {$this->name} : $timeToGenerate");
}
return $this->getSQL($getBlobs, $where, $sort);
}