| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| AbstractMultiArtifactInfoFilter |
|
| 2.5;2,5 |
| 1 | package org.apache.maven.index; | |
| 2 | ||
| 3 | /* | |
| 4 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 5 | * or more contributor license agreements. See the NOTICE file | |
| 6 | * distributed with this work for additional information | |
| 7 | * regarding copyright ownership. The ASF licenses this file | |
| 8 | * to you under the Apache License, Version 2.0 (the | |
| 9 | * "License"); you may not use this file except in compliance | |
| 10 | * with the License. You may obtain a copy of the License at | |
| 11 | * | |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 13 | * | |
| 14 | * Unless required by applicable law or agreed to in writing, | |
| 15 | * software distributed under the License is distributed on an | |
| 16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 17 | * KIND, either express or implied. See the License for the | |
| 18 | * specific language governing permissions and limitations | |
| 19 | * under the License. | |
| 20 | */ | |
| 21 | ||
| 22 | import java.util.ArrayList; | |
| 23 | import java.util.Collections; | |
| 24 | import java.util.List; | |
| 25 | ||
| 26 | import org.apache.maven.index.context.IndexingContext; | |
| 27 | ||
| 28 | /** | |
| 29 | * An abstract helper class for implementing ArtifactInfoFilter that actually aggregates multiple filters into one. It | |
| 30 | * is up to developer to implement how will be they behave ("fail-fast", or "one-vote-enough for passing", etc). | |
| 31 | * | |
| 32 | * @author cstamas | |
| 33 | */ | |
| 34 | public abstract class AbstractMultiArtifactInfoFilter | |
| 35 | implements ArtifactInfoFilter | |
| 36 | { | |
| 37 | private final List<ArtifactInfoFilter> filters; | |
| 38 | ||
| 39 | public AbstractMultiArtifactInfoFilter( final List<ArtifactInfoFilter> filters ) | |
| 40 | 0 | { |
| 41 | 0 | if ( filters == null || filters.isEmpty() ) |
| 42 | { | |
| 43 | 0 | this.filters = null; |
| 44 | } | |
| 45 | else | |
| 46 | { | |
| 47 | 0 | this.filters = new ArrayList<ArtifactInfoFilter>( filters ); |
| 48 | } | |
| 49 | 0 | } |
| 50 | ||
| 51 | /** | |
| 52 | * Returns an unmodifiable list of filters. | |
| 53 | * | |
| 54 | * @return | |
| 55 | */ | |
| 56 | public List<ArtifactInfoFilter> getFilters() | |
| 57 | { | |
| 58 | 0 | if ( filters == null ) |
| 59 | { | |
| 60 | 0 | return Collections.emptyList(); |
| 61 | } | |
| 62 | else | |
| 63 | { | |
| 64 | 0 | return Collections.unmodifiableList( filters ); |
| 65 | } | |
| 66 | } | |
| 67 | ||
| 68 | /** | |
| 69 | * The filter's implementation is: if list of filters is empty, the just accept it, otherwise consult the list of | |
| 70 | * filters. | |
| 71 | */ | |
| 72 | public boolean accepts( IndexingContext ctx, ArtifactInfo ai ) | |
| 73 | { | |
| 74 | 0 | if ( this.filters == null ) |
| 75 | { | |
| 76 | 0 | return true; |
| 77 | } | |
| 78 | else | |
| 79 | { | |
| 80 | 0 | return accepts( filters, ctx, ai ); |
| 81 | } | |
| 82 | } | |
| 83 | ||
| 84 | /** | |
| 85 | * It is left to final implementor to implement how we want to decide using filters. This method is called only if | |
| 86 | * we _have_ filters set! | |
| 87 | * | |
| 88 | * @param filters | |
| 89 | * @param ctx | |
| 90 | * @param ai | |
| 91 | * @return | |
| 92 | */ | |
| 93 | protected abstract boolean accepts( List<ArtifactInfoFilter> filters, IndexingContext ctx, ArtifactInfo ai ); | |
| 94 | } |