01: /**
02: * Copyright 2006 Webmedia Group Ltd.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: **/package org.araneaframework.core;
16:
17: import org.araneaframework.Environment;
18:
19: /**
20: * Base {@link org.araneaframework.Environment} with <code>requireEntry</code>
21: * implementation.
22: *
23: * @author Jevgeni Kabanov (ekabanov <i>at</i> araneaframework <i>dot</i> org)
24: */
25: public abstract class BaseEnvironment implements Environment {
26: public Object requireEntry(Object key)
27: throws NoSuchEnvironmentEntryException {
28: Assert.notNullParam(this , key, "key");
29:
30: Object result = getEntry(key);
31:
32: if (result == null)
33: throw new NoSuchEnvironmentEntryException(key);
34:
35: return result;
36: }
37: }
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