01: // Copyright 2007 The Apache Software Foundation
02: //
03: // Licensed under the Apache License, Version 2.0 (the "License");
04: // you may not use this file except in compliance with the License.
05: // You may obtain a copy of the License at
06: //
07: // http://www.apache.org/licenses/LICENSE-2.0
08: //
09: // Unless required by applicable law or agreed to in writing, software
10: // distributed under the License is distributed on an "AS IS" BASIS,
11: // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12: // See the License for the specific language governing permissions and
13: // limitations under the License.
14:
15: package org.apache.tapestry.internal.services;
16:
17: import org.apache.tapestry.Link;
18: import org.apache.tapestry.services.PersistentFieldChange;
19: import org.apache.tapestry.services.PersistentFieldStrategy;
20:
21: /**
22: * Describes an object that can store {@link PersistentFieldChange}s, and manage a query parameter
23: * stored into a {@link Link} to maining this data across requests.
24: */
25: public interface ClientPersistentFieldStorage extends
26: PersistentFieldStrategy {
27: /**
28: * Updates a link, adding a query parameter to it (if necessary) to store
29: *
30: * @param link
31: */
32: void updateLink(Link link);
33: }
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