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17 package org.apache.commons.betwixt.registry;
18
19 import org.apache.commons.betwixt.io.read.ElementMapping;
20 import org.apache.commons.betwixt.io.read.ReadContext;
21
22 /***
23 * <p>Resolves polymorphic references.
24 * </p><p>
25 * A polymorphic reference is an element whose name and type
26 * resolution are postponed till bind-time.
27 * When the xml is read, the type can then resolved from
28 * by calling {@link #resolveType}.
29 * </p>
30 * @since 0.7
31 * @author <a href='http://jakarta.apache.org/'>Jakarta Commons Team</a>
32 */
33 public interface PolymorphicReferenceResolver {
34
35 /***
36 * Resolves the bind-time type of a polymorphic element.
37 * @param mapping <code>ElementMapping</code> describing the (polymorphic) element being mapped,
38 * not null
39 * @param context <code>ReadContext</code>, not null
40 * @return the <code>Class</code> describing the type to which this element should be bound,
41 * or null if the reference cannot be resolved
42 */
43 public Class resolveType(ElementMapping mapping, ReadContext context);
44 }