01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.cocoon.caching.validity;
18:
19: import org.apache.avalon.framework.parameters.ParameterException;
20: import org.apache.avalon.framework.parameters.Parameters;
21:
22: /**
23: * Event creation.
24: */
25: public interface EventFactory {
26:
27: /**
28: * Create an event based on parameter values.
29: *
30: * @param params arguments to the newly created event.
31: * @return newly created Event
32: * @throws ParameterException if required parameters are missing.
33: */
34: public Event createEvent(Parameters params)
35: throws ParameterException;
36:
37: }
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