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: */
18: package filter.ccimpl;
19:
20: import java.util.ArrayList;
21: import java.util.Arrays;
22: import java.util.List;
23: import org.apache.commons.collections.CollectionUtils;
24: import org.apache.commons.collections.Predicate;
25: import filter.IFilter;
26:
27: public class CCFilter implements IFilter {
28:
29: public String[] filter(String[] values, final String prefix) {
30: if (values == null) {
31: return null;
32: }
33: if (prefix == null) {
34: return values;
35: }
36:
37: List result = new ArrayList(Arrays.asList(values));
38: CollectionUtils.filter(result, new Predicate() {
39: public boolean evaluate(Object o) {
40: return o != null && o.toString().startsWith(prefix);
41: }
42: });
43: return (String[]) result.toArray(new String[result.size()]);
44: }
45: }
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