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.services;
16:
17: import org.apache.tapestry.ComponentResources;
18: import org.apache.tapestry.ValueEncoder;
19:
20: /**
21: * A source for value encoders based on a property type.
22: */
23: public interface ValueEncoderSource {
24: /**
25: * Creates a value encoder based on the <em>type</em> of the named parameter.
26: *
27: * @param parameterName
28: * the name of the parameter whose type is used to locate a PKE factory
29: * @param resources
30: * the resources of the component, from which parameter and its type are extracted
31: * @return the value encoder
32: */
33: ValueEncoder createEncoder(String parameterName,
34: ComponentResources resources);
35: }
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