org.eclipse.aether.util.filter.OrDependencyFilter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.eclipse.aether.util.filter;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.graph.DependencyNode;
/**
* A dependency filter that combines zero or more other filters using a logical {@code OR}.
*/
public final class OrDependencyFilter implements DependencyFilter {
private final Set filters = new LinkedHashSet<>();
/**
* Creates a new filter from the specified filters.
*
* @param filters The filters to combine, may be {@code null}.
*/
public OrDependencyFilter(DependencyFilter... filters) {
if (filters != null) {
Collections.addAll(this.filters, filters);
}
}
/**
* Creates a new filter from the specified filters.
*
* @param filters The filters to combine, may be {@code null}.
*/
public OrDependencyFilter(Collection filters) {
if (filters != null) {
this.filters.addAll(filters);
}
}
/**
* Creates a new filter from the specified filters.
*
* @param filter1 The first filter to combine, may be {@code null}.
* @param filter2 The first filter to combine, may be {@code null}.
* @return The combined filter or {@code null} if both filter were {@code null}.
*/
public static DependencyFilter newInstance(DependencyFilter filter1, DependencyFilter filter2) {
if (filter1 == null) {
return filter2;
} else if (filter2 == null) {
return filter1;
}
return new OrDependencyFilter(filter1, filter2);
}
public boolean accept(DependencyNode node, List parents) {
for (DependencyFilter filter : filters) {
if (filter.accept(node, parents)) {
return true;
}
}
return false;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || !getClass().equals(obj.getClass())) {
return false;
}
OrDependencyFilter that = (OrDependencyFilter) obj;
return this.filters.equals(that.filters);
}
@Override
public int hashCode() {
int hash = getClass().hashCode();
hash = hash * 31 + filters.hashCode();
return hash;
}
}