org.jboss.forge.parser.xml.query
Interface Query<T>

Type Parameters:

T - Expected return value from executing a query

All Known Implementing Classes:

CreateQuery, GetOrCreateQuery, GetQuery, GetSingleQuery

public interface Query<T>

Contract for something capable of executing a query (collection of Patterns) upon a Node to find a match or matches. May be used for search, creation, etc.

Author:

Aslak Knutsen, ALR

Method Summary

T	execute(Node node, Pattern... patterns) Queries the tree starting at the specified Node for the specified Patterns.

Method Detail

execute

T execute(Node node,
          Pattern... patterns)
          throws IllegalArgumentException

Queries the tree starting at the specified Node for the specified Patterns.

Parameters:

node - The Node to use as a reference point

patterns - The Patterns to match

Returns:

The expressed value or null if not found.

Throws:

IllegalArgumentException - If the Node is not specified or no Patterns are specified