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