org.xmlBlaster.engine.query
Interface I_Query

All Known Implementing Classes:

QueueQueryPlugin

public interface I_Query

I_Query the interface to implement for all plugins which are doing a query.

Author:

Michele Laghi

Method Summary

MsgUnit[]

query(java.lang.Object source, java.lang.String query) Makes a query to the specified source object.

Method Detail

query

MsgUnit[] query(java.lang.Object source,
                java.lang.String query)
                throws XmlBlasterException

Makes a query to the specified source object.

Parameters:

source - the object on which to submit the query.

query - the qos of the query, i.e. what has to be queried. Can be null (implementation can restrict that)

Returns:

a MsgUnit[] containing all entries which match the query

Throws:

XmlBlasterException - if something is wrong in the query (for example if the type of the object specified as the source is wrong)