<?php
class HDB_Query{
function __construct($queryType='content'){
$this->topOperator = 'AND';
$this->queryType = $queryType;
return $this;
}
function filter(){
$args = func_get_args();
if (count($args) == 3){
list($field, $operator, $value) = func_get_args();
}elseif((count($args) -1)%3 == 0){
for ($i = 1; $i < count($args); $i+=3){
$operator[] = array ('field' => $args[$i],
'operator' =>$args[$i+1],
'value' =>$args[$i+2]
);
}
}else{
throw new Exception('HDB_Query: Unreasonable number of arguments'
. ' submitted to HDB_Query->filter()');
}
$this->filter[] = array ( 'field' =>$field,
'operator' => $operator,
'value' => $value );
return $this;
}
function setTopOperator($operator){
$OPERATORS = array('OR','AND');
if (in_array($operator, $OPERATORS)){
$this->topOperator = $operator;
}
}
function execute(){
global $link, $shapes;
mysql_select_db('adjoottshirtuser', $link) ;
$sql = $this->getSQL($this->filter, 'AND');
$userQuery = mysql_query($sql)
or die('SELECT FAILED: '.mysql_error());
if(mysql_num_rows($userQuery) > 0){
while ($row = mysql_fetch_array( $userQuery ))
$results[] = $row;
//print_r($row);
//return $row;
}
//cast result into shape
if (!empty($results) && ($this->queryType=='content')){
foreach ($results as $result){
if (!empty($shapes[$result['type']])){
$newObject = $shapes[$result['type']]->castObject($result);
$newResults[] = $newObject;
unset($newResult);
}
}
}
elseif(!empty($results) && ($this->queryType=='count')){
$newResults = $results[0][0];
}
return $newResults;
}
function getSQL($filters=FALSE, $joinOperator=FALSE, $sub=FALSE){
global $shapes, $contentTable,
$allowedStrAttributes, $allowedNumAttributes,
$allowedStrOperators, $allowedNumOperators;
if (empty($joinOperator)){
$joinOperator = $this->topOperator;
}
$OPERATORS = array( 'AND' => 'OR',
'OR' => 'AND',
);
//support empty filters argument
if (empty($filters)){
$filters = $this->filter;
}
if ($this->queryType == 'content'){
$sql = 'SELECT * from '.$contentTable.' ';
}
elseif($this->queryType == 'count'){
$sql = 'SELECT COUNT(*) from '.$contentTable.' ';
}
if (!empty($filters)){
foreach ($filters as $filter){
if (is_array($filter['operator'])){
$sqlWhereArray[] = $this->getSQL($filter['operator'], $OPERATORS[$joinOperator], TRUE);
}elseif (substr($filter['field'], 0, 2) == 'my'){
//handle my attributes
$sqlAttributes = $this->_getSQLFromDev($filter['field']);
$sqlMyArray = array();
if (!empty($sqlAttributes)){
foreach ($sqlAttributes as $attArray){
$dataType = $attArray['dataType'];
$sqlField = $attArray['sql'];
if ($dataType == 'num'){
$sqlMyArray[] = $sqlField .' '.$filter['operator'].' '.$filter['value'];
}
else{
$sqlMyArray[] = $sqlField .' '.$filter['operator'].' "'.$filter['value'].'"';
}
}
$sqlWhereArray[] = '('.implode(' OR ', $sqlMyArray).')';
}
//handle standard attributes
}elseif($allowedStrAttributes[$filter['field']]){
if ($allowedStrOperators[$filter['operator']]){
if ($allowedStrOperators[$filter['operator']]!='function'){
$sqlWhereArray[] = $filter['field'].' '.$allowedStrOperators[$filter['operator']].' "'.$filter['value'].'"';
}
}else{
echo "illegal str operator<br>";
}
}elseif($allowedNumAttributes[$filter['field']]){
if ($allowedNumOperators[$filter['operator']]){
if ($allowedNumOperators[$filter['operator']]!='function'){
$sqlWhereArray[] = $filter['field'].' '.$allowedNumOperators[$filter['operator']].' '.$filter['value'];
}
}
}else{
echo "<br>invalid filter: ".$filter['field']."<br>";
}
}
}
if (!empty($sqlWhereArray)){
$sqlWhere = implode(' '.$joinOperator.' ', $sqlWhereArray);
$sql .= 'WHERE '.$sqlWhere;
}
$sql .= ' limit 100';
if ($sub){
return '('.$sqlWhere.')';
}else{
return $sql;
}
}
function debugHTML(){
$tab = " ";
$tab2 = $tab.$tab;
$output = "<pre>Query:<br>";
if (!empty($this->filter)){
foreach ($this->filter as $filter){
$output .= $tab . "Next Filter<br>";
$output .= $tab2 . "Field: ".$filter['field']."<br>";
$output .= $tab2 . "Operator: ".$filter['operator']."<br>";
$output .= $tab2 . "Value: ".$filter['value']."<br>";
}
}
$output .= "</pre>";
return $output;
}
function _getSQLFromDev($myAttribute){
global $shapes;
//remove my. or my-> if necessary
if (substr($myAttribute, 0, 3) == 'my.'){
$myAttribute = (substr($myAttribute, 3));
}
elseif (substr($myAttribute, 0, 4) == 'my->'){
$myAttribute = (substr($myAttribute, 4));
}
//only numbers and letters allowed from this point on
$cleanAtt = preg_replace('/[^a-zA-Z0-9]/', '', $myAttribute);
if ($myAttribute == $cleanAtt){
//iterate over shapes, returning all possible matches
if (!empty($shapes)){
foreach ($shapes as $shape){
$SQL = $shape->reverse->$myAttribute;
if (!empty($SQL)){
$dataType = getMyDataType($SQL);
if (!empty($dataType)){
$sqlAttributes[] = array('sql' => $SQL,
'dataType' => $dataType);
}
}
}
}
return $sqlAttributes;
}
}
}
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