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oracle.xml.xquery
Class OXQFunctionEvaluator

java.lang.Object
oracle.xml.xquery.OXQFunctionEvaluator

public abstract class OXQFunctionEvaluator

extends java.lang.Object

Extensions of this can be used to implement XQuery external functions. Users may return a class that extends this from an entity resolver.

Since:

12.1

See Also:

OXQEntityKind.EXTERNAL_FUNCTION, OXQEntity

Method Summary

abstract XQSequence

evaluate(OXQFunctionContext context, XQSequence[] params) Called at runtime when the external function is invoked.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

evaluate

public abstract XQSequence evaluate(OXQFunctionContext context,
                                    XQSequence[] params)
                             throws XQException

Called at runtime when the external function is invoked.

Parameters:

context - provides facilities that may be useful to the external function implementation

params - input parameter bindings for the external function call

Returns:

the result of invoking the external function

Throws:

XQException

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