Changes

<p>In the The query mode of the [[Clients]] allows you to bind external variables to a query can be send to and evaluate the server and executedquery in an iterative manner. For this you have to call the The <code>query()</code> functionof the <code>Session</code> with your defined query. This will return instance returns a new query objectwhich comes with an forward-only iterator to get each result of the query.Furthermore it is possible to bind variables to the query using the <code>bind()</code> functionof the query objectinstance.</p>

<p>The query execution works as follows:</p>

#Create a new session instance with hostname, port, username and password.#Call the <code>query()</code> function of the session with the query as argument your XQuery expression to get your a query object.#Optionally bind variables to the query with one of the <code>bind()</code> functionfunctions.#Initialize query output Optionally bind a value to the context item via <code>initcontext()</code>.#Iterate through the query object with the <code>more()</code> and <code>next()</code> functions. If # As an error occursalternative, an exception is throwncall <code>execute()</code> to get the whole result at a time.# <code>info()</code> gives you information on query evaluation.# <code>options()</code> returns the query serialization parameters.#Close Don't forget to close the query with <code>close()</code>.

==PHP Example==  Taken from our [https://github.com/BaseXdb/basex-api/blob/master/src/main/php/QueryBindExample.php repository]: <pre class="brush:php"><?php/* * This example shows how queries can be executed in an iterative manner. * Documentation: http://basex.org/api * * (C) BaseX Team 2005-15, BSD License */include("BaseXClient.php"); try { // create session $session = new Session("localhost", 1984, "admin", "admin"); try { // create query instance $input = 'declare variable $name external; '. 'for $i in 1 to 10 return element { $name } { $i }'; $query = $session->query($input);

<pre class="brush:java"> // Create a session objectbind variableSession session = new Session $query->bind("localhost", 1984, "admin$name", "adminnumber");

//Define a query and create a query objectprint resultString q = "declare variable print $name external; for $i in 1 to 10 return element { $name } { $i }"Query query = session.query->execute(q)."\n";

//Call the bind method of your close query objectinstance $query.bind->close("$name", "Number");

} catch (Exception $e) { //Call the init method of your query objectprint exception print query.init$e->getMessage(); }

//Iterate through the query objectclose sessionwhile(query.more()) print query.next $session->close();

} catch (Exception $e) { //Close your query object:print exception print query.close$e->getMessage();}?>

[[Category:Developer]][[Category:Server]]=Changelog= ;Version 7.2 [[Category* Added:Language Bindings]]{{Code|context()}} function