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.components.store.impl;
18:
19: import org.apache.avalon.framework.parameters.ParameterException;
20: import org.apache.avalon.framework.parameters.Parameters;
21: import org.apache.excalibur.store.impl.MRUMemoryStore;
22:
23: /**
24: * Default implementation of Cocoon's transient store. This is a <code>MRUMemoryStore</code>
25: * that cannot be backed by a persistent store (this ensure it is really transient).
26: *
27: * @author <a href="http://www.apache.org/~sylvain/">Sylvain Wallez</a>
28: * @version CVS $Id: DefaultTransientStore.java 433543 2006-08-22 06:22:54Z crossley $
29: */
30: public class DefaultTransientStore extends MRUMemoryStore {
31:
32: public void parameterize(Parameters params)
33: throws ParameterException {
34: if (params.getParameterAsBoolean("use-persistent-cache", false)) {
35: throw new ParameterException(
36: "A transient store cannot be backed by a persistent store.");
37: }
38: super.parameterize(params);
39: }
40: }
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