66 lines
1.9 KiB
PHP
66 lines
1.9 KiB
PHP
<?php
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require_once("db_common.php");
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/*! Implementation of DataWrapper for PostgreSQL
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**/
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class PostgreDBDataWrapper extends DBDataWrapper{
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public function query($sql){
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LogMaster::log($sql);
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$res=pg_query($this->connection,$sql);
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if ($res===false) throw new Exception("Postgre - sql execution failed\n".pg_last_error($this->connection));
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return $res;
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}
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protected function select_query($select,$from,$where,$sort,$start,$count){
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$sql="SELECT ".$select." FROM ".$from;
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if ($where) $sql.=" WHERE ".$where;
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if ($sort) $sql.=" ORDER BY ".$sort;
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if ($start || $count)
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$sql.=" OFFSET ".$start." LIMIT ".$count;
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return $sql;
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}
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public function get_next($res){
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return pg_fetch_assoc($res);
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}
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protected function get_new_id(){
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$res = pg_query( $this->connection, "SELECT LASTVAL() AS seq");
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$data = pg_fetch_assoc($res);
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pg_free_result($res);
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return $data['seq'];
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}
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public function escape($data){
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//need to use oci_bind_by_name
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return pg_escape_string($this->connection,$data);
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}
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public function tables_list() {
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$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";
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$res = pg_query($this->connection, $sql);
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$tables = array();
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while ($table = pg_fetch_assoc($res)) {
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$tables[] = $table['table_name'];
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}
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return $tables;
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}
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public function fields_list($table) {
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$sql = "SELECT * FROM information_schema.constraint_column_usage";
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$result = pg_query($this->connection, $sql);
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$field = pg_fetch_assoc($result);
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$id = $field['column_name'];
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$sql = "SELECT * FROM information_schema.columns WHERE table_name ='".$table."';";
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$result = pg_query($this->connection, $sql);
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$fields = array();
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$id = "";
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while ($field = pg_fetch_assoc($result)) {
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$fields[] = $field["column_name"];
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}
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return array('fields' => $fields, 'key' => $id );
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}
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}
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?>
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