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|- valign="top"
| Function
| <code>Q{java.lang.Object}hash-code($object)</code>
| <code>[https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode() object.hashCode()]</code>
|- valign="top"
| Function with types
| <code>Q{java.lang.String}split·java.lang.String·int($string, ';', xs:int(3))</code>
| <code>[https://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-int- string.split(";", 3)]</code>
|}
</pre>
If the result of a Java call contains invalid XML characters, it will be rejected. The validity check can be disabled by setting the [[Options#CHECKSTRINGS{{Option|CHECKSTRINGS]] option }} to false. In the example below, a file with a single {{Code|00}} byte is written, and this file will then be accessed by via Java functions:
<pre class="brush:xquery">
If a class inherits the abstract [https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/query/QueryModule.java QueryModule] class, the two variables [https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/query/QueryContext.java queryContext] and [https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/query/StaticContext.java staticContext] get available, which provide access to the global and static context of a query.
The [https://github.com/BaseXdb/basex/blob/master/basex-core/src/main/java/org/basex/query/QueryResource.java QueryResource] interface can be implemented to enforce finalizing operations, such as the closing of opened connections or resources in a module. Its {{Code|close()}} method will be called after a query the XQuery expression has been fully evaluated.
==Annotations==
/**
* Returns the name of the logged in user.
* @return userstring
*/
@Requires(Permission.NONE)
/**
* Converts the specified string to an integer.
* @param value string representationto be converted * @return resulting integer
* @throws QueryException query exception
*/
@Override
public void close() {
// see description abovedefined in QueryResource interface, will be called after query evaluation
}
}
