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1 // Copyright 2008 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // 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.tapestry5.services;
16
17 import org.apache.tapestry5.NullFieldStrategy;
18 import org.apache.tapestry5.ioc.annotations.UsesMappedConfiguration;
19
20 /**
21 * A source for {@link org.apache.tapestry5.NullFieldStrategy} instances based on a logical name.
22 */
23 @UsesMappedConfiguration(NullFieldStrategy.class)
24 public interface NullFieldStrategySource
25 {
26 /**
27 * Returns the instance based on the name. Instances are expected to be stateless and therefore, shareable and
28 * thread safe.
29 *
30 * @param name name of the strategy (case is ignored)
31 * @return the strategy
32 * @throws IllegalArgumentException if the name does not match a configured instance
33 */
34 NullFieldStrategy get(String name);
35 }