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moditect#28 Allowing to pre-define components during analyze
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javac-plugin/src/main/java/org/moditect/deptective/internal/model/Components.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| /** | ||
| * Copyright 2019 The ModiTect authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.moditect.deptective.internal.model; | ||
|
|
||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Iterator; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.Stream; | ||
|
|
||
| /** | ||
| * A set of {@link Component}s. | ||
| * | ||
| * @author Gunnar Morling | ||
| */ | ||
| public class Components implements Iterable<Component> { | ||
|
|
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| private final Set<Component> contained; | ||
| private final Map<String, Component> componentsByPackage; | ||
|
|
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| public Components(Set<Component> contained) { | ||
| this.contained = Collections.unmodifiableSet(contained); | ||
| this.componentsByPackage = new HashMap<>(); | ||
| } | ||
|
|
||
| @Override | ||
| public Iterator<Component> iterator() { | ||
| return contained.iterator(); | ||
| } | ||
|
|
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| public Stream<Component> stream() { | ||
| return contained.stream(); | ||
| } | ||
|
|
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| /** | ||
| * Returns the component containing the given package or {@code null} if no such component exists. | ||
| * | ||
| * @throws PackageAssignedToMultipleComponentsException In case more than one component was found whose filter | ||
| * expressions match the given package. | ||
| */ | ||
| public Component getComponentByPackage(String qualifiedName) throws PackageAssignedToMultipleComponentsException { | ||
| if (qualifiedName == null || qualifiedName.isEmpty()) { | ||
| return null; | ||
| } | ||
|
|
||
| return componentsByPackage.computeIfAbsent( | ||
| qualifiedName, | ||
| p -> { | ||
| Set<Component> candidates = contained.stream() | ||
| .filter(c -> c.containsPackage(p)) | ||
| .collect(Collectors.toSet()); | ||
|
|
||
| if (candidates.isEmpty()) { | ||
| return null; | ||
| } | ||
| else if (candidates.size() == 1) { | ||
| return candidates.iterator().next(); | ||
| } | ||
| else { | ||
| throw new PackageAssignedToMultipleComponentsException(candidates); | ||
| } | ||
| } | ||
| ); | ||
| } | ||
| } |
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