2016-07-24 10:00:49 +00:00
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<?php
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namespace manager\ORM;
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use \manager\Database;
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use \manager\ORM\Rows;
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class SQLBuilder{
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2016-07-24 15:42:54 +00:00
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/* CONSTRUIT LA REQUETE FORMATTEE "SELECT" AVEC UNE LISTE DE CHAMPS
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2016-07-24 10:00:49 +00:00
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*
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2016-07-24 15:42:54 +00:00
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* @sqlFields<Array> Liste de champ/tables contenant des champs
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2016-07-24 10:00:49 +00:00
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*
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2016-07-24 15:42:54 +00:00
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* @return sql<Array> Renvoie un tableau formatté
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2016-07-24 10:00:49 +00:00
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*
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*/
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2016-07-24 15:42:54 +00:00
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public static function SELECT($sqlFields){
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2016-07-24 10:00:49 +00:00
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/* [0] Initialisation
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=========================================================*/
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2016-07-24 15:42:54 +00:00
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$sql = [];
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2016-07-24 10:00:49 +00:00
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/* [1] On construit la requête
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=========================================================*/
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$c = 0;
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2016-07-24 15:42:54 +00:00
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foreach($sqlFields as $table=>$fields)
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2016-07-24 10:00:49 +00:00
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foreach($fields as $field){
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2016-07-24 15:42:54 +00:00
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$sql[$c] = $table.'.'.$field;
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2016-07-24 10:00:49 +00:00
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$c++;
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}
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return $sql;
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}
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2016-07-24 15:42:54 +00:00
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/* CONSTRUIT LA REQUETE FORMATTEE "FROM" AVEC UNE LISTE DE TABLES
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2016-07-24 10:00:49 +00:00
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*
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2016-07-24 15:42:54 +00:00
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* @tables<Array> Liste de tables OU SQL PUR
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2016-07-24 10:00:49 +00:00
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*
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2016-07-24 15:42:54 +00:00
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* @return sql<Array> Renvoie un tableau formatté
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2016-07-24 10:00:49 +00:00
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*
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*/
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public static function FROM($tables){
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2016-07-24 15:42:54 +00:00
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return $tables;
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2016-07-24 10:00:49 +00:00
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}
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2016-07-24 15:42:54 +00:00
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/* CONSTRUIT LA REQUETE FORMATTEE "UPDATE" AVEC LA TABLE EN QUESTION
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2016-07-24 10:31:54 +00:00
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*
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* @table<String> Table en question
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*
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2016-07-24 15:42:54 +00:00
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* @return sql<Array> Renvoie un tableau formatté
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2016-07-24 10:31:54 +00:00
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*
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*/
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public static function UPDATE($table){
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2016-07-24 15:59:59 +00:00
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return $table;
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}
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2016-07-24 10:31:54 +00:00
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2016-07-24 15:59:59 +00:00
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/* CONSTRUIT LA REQUETE FORMATTEE "DELETE" AVEC LA TABLE EN QUESTION
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*
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* @table<String> Table en question
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*
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* @return sql<Array> Renvoie un tableau formatté
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*
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*/
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public static function DELETE($table){
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return $table;
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2016-07-24 10:31:54 +00:00
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}
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2016-07-24 10:00:49 +00:00
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/* CONSTRUIT LA REQUETE TEXTUELLE "IN" AVEC UNE LISTE DE TABLES
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*
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* @field<Array> Tableau contenant [table, field]
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* @array<Array> Valeurs de la clause IN
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* @offset<int> Permet de rendre la condition unique (nommage des variables)
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* @binded<Arary> Tableau associatif contenant les variables "bindés" -> ajout des champs
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*
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2016-07-24 15:42:54 +00:00
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* @return sql<String> Renvoie le textuel formatté
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2016-07-24 10:00:49 +00:00
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*
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*/
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public static function IN($field, $array, $offset=0, &$binded){
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/* [0] Initialisation
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=========================================================*/
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2016-07-24 15:42:54 +00:00
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$sql = '';
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2016-07-24 10:00:49 +00:00
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/* [1] On construit la requête
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=========================================================*/
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/* (1) Champ */
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$sql .= $field[0].'.'.$field[1].' IN (';
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/* (2) Valeurs */
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$c = 0;
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foreach($array as $i=>$value){
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if( $c > 0 ) $sql .= ', ';
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$sql .= ':'.$field[0].'_x_'.$field[1].'_'.$offset.'_'.$i;
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$binded[':'.$field[0].'_x_'.$field[1].'_'.$offset.'_'.$i] = $value;
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$c++;
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}
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return $sql.")";
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}
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/* CONSTRUIT LA REQUETE TEXTUELLE "WHERE" AVEC UNE LISTE DE TABLES
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*
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* @field<Array> Tableau contenant [table, field]
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* @valeur<Array> Valeurs de la clause WHERE [valeur, opérateur]
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* @offset<int> Permet de rendre la condition unique (nommage des variables)
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* @binded<Arary> Tableau associatif contenant les variables "bindés" -> ajout des champs
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*
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2016-07-24 15:42:54 +00:00
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* @return sql<String> Renvoie le textuel formatté
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2016-07-24 10:00:49 +00:00
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*
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*/
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public static function WHERE($field, $value, $offset=0, &$binded){
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/* [0] Initialisation
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=========================================================*/
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2016-07-24 15:42:54 +00:00
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$sql = '';
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2016-07-24 10:00:49 +00:00
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/* [1] On construit la requête
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=========================================================*/
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/* (1) Chamo */
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$sql .= $field[0].'.'.$field[1].' ';
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/* (2) Opérateur */
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$sql .= substr($value[1], 2, -2).' ';
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/* (3) Variable */
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$sql .= ':'.$field[0].'_x_'.$field[1].'_'.$offset;
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$binded[':'.$field[0].'_x_'.$field[1].'_'.$offset] = $value[0];
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return $sql;
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}
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2016-07-24 10:31:54 +00:00
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2016-07-24 15:42:54 +00:00
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/* CONSTRUIT LA REQUETE FORMATTEE "SET" AVEC UNE LISTE DE TABLES
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2016-07-24 10:31:54 +00:00
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*
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* @values<Array> Tableau de la forme [ field=>value, field2=>value2 ]
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* @binded<Arary> Tableau associatif contenant les variables "bindés" -> ajout des champs
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*
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2016-07-24 15:42:54 +00:00
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* @return sql<Array> Renvoie un tableau formatté
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2016-07-24 10:31:54 +00:00
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*
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*/
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public static function SET($values, &$binded){
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/* [0] Initialisation
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=========================================================*/
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2016-07-24 15:42:54 +00:00
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$sql = [];
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2016-07-24 10:31:54 +00:00
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/* [1] On construit la requête
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=========================================================*/
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$c = 0;
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foreach($values as $field=>$value){
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/* (1) Champ */
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2016-07-24 15:42:54 +00:00
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$sql[$c] = ($c>0) ? "\n, " : '';
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$sql[$c] .= $field.' = ';
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2016-07-24 10:31:54 +00:00
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/* (2) Variable */
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2016-07-24 15:42:54 +00:00
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$sql[$c] .= ':update_'.$field;
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2016-07-24 10:31:54 +00:00
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$binded[':update_'.$field] = $value;
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$c++;
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}
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return $sql;
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}
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2016-07-24 15:42:54 +00:00
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/* CONSTRUIT LA REQUETE FORMATTEE "LIMIT" AVEC UN NOMBRE D'ENTREES
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*
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* @count<int> Nombre limite
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*
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* @return sql<Array> Renvoie un sql formatté
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*
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*/
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public static function LIMIT($count=null){
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/* [0] Initialisation
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=========================================================*/
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$sql = [];
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/* [1] On construit la requête
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=========================================================*/
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if( intval($count) == $count )
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$sql = intval($count);
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return $sql;
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}
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/* CONSTRUIT LA REQUETE A PARTIR D'UNE REQUETTE FORMATTEE
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*
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* @request<Arary> Requête formattée
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*
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* @return sql<String> Requête formattée en SQL
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*
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*/
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public static function BUILD($request){
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2016-07-24 15:59:59 +00:00
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/* [0] On initialise le retour
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2016-07-24 15:42:54 +00:00
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=========================================================*/
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2016-07-24 15:59:59 +00:00
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$sql = '';
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2016-07-24 15:42:54 +00:00
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2016-07-24 15:59:59 +00:00
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/* [1] Gestion dans l'ordre
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=========================================================*/
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foreach($request as $clause=>$statements){
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2016-07-24 15:42:54 +00:00
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2016-07-24 15:59:59 +00:00
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switch($clause){
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2016-07-24 15:42:54 +00:00
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2016-07-24 15:59:59 +00:00
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/* (1) Clause SELECT
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---------------------------------------------------------*/
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case 'SELECT':
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$sql = 'SELECT ';
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2016-07-24 15:42:54 +00:00
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2016-07-24 15:59:59 +00:00
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$c = 0;
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foreach($statements as $field){
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$sql .= ($c==0) ? $field : ", $field";
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$c++;
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}
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$sql .= "\n";
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break;
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/* (2) Clause FROM
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---------------------------------------------------------*/
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case 'FROM':
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$sql .= 'FROM ';
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$c = 0;
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foreach($statements as $field){
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$sql .= ($c==0) ? $field : ", $field";
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$c++;
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}
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$sql .= "\n";
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break;
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/* (3) Clause WHERE
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---------------------------------------------------------*/
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case 'WHERE':
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$c = 0;
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foreach($statements as $field){
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$sql .= ($c==0) ? "WHERE $field\n" : "AND $field\n";
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$c++;
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}
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$sql .= ($c==0) ? '' : "\n";
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break;
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/* (4) Clause LIMIT
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---------------------------------------------------------*/
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case 'LIMIT':
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if( is_numeric($statements) )
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$sql .= 'LIMIT '.intval($statements);
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break;
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/* (5) Clause DELETE
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---------------------------------------------------------*/
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case 'DELETE':
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$sql .= "DELETE FROM $statements\n";
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break;
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}
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2016-07-24 15:42:54 +00:00
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}
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2016-07-24 15:59:59 +00:00
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2016-07-24 15:42:54 +00:00
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/* [5] On retourne le résultat
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=========================================================*/
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return $sql;
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}
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2016-07-24 10:00:49 +00:00
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}
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?>
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