/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.jboss.modules.filter;
import java.util.ArrayList;
import java.util.List;
/**
* A builder for a multiple-path filter.
*
* @apiviz.exclude
* @see PathFilters#multiplePathFilterBuilder(boolean)
*/
public class MultiplePathFilterBuilder {
private final List<PathFilter> filters = new ArrayList<PathFilter>();
private final List<Boolean> includeFlags = new ArrayList<Boolean>();
private final boolean defaultVal;
MultiplePathFilterBuilder(final boolean defaultVal) {
this.defaultVal = defaultVal;
}
/**
* Add a filter to this builder.
*
* @param filter the filter to add
* @param include {@code true} if matching paths should be included, {@code false} for excluded
*/
public void addFilter(final PathFilter filter, final boolean include) {
if (filter == null) {
throw new IllegalArgumentException("filter is null");
}
filters.add(filter);
includeFlags.add(Boolean.valueOf(include));
}
/**
* Create the path filter from this builder's current state.
*
* @return the path filter
*/
public PathFilter create() {
final PathFilter[] filters = this.filters.toArray(new PathFilter[this.filters.size()]);
final boolean[] includeFlags = new boolean[this.includeFlags.size()];
for (int i = 0, includeFlagsSize = this.includeFlags.size(); i < includeFlagsSize; i++) {
includeFlags[i] = this.includeFlags.get(i).booleanValue();
}
if (filters.length == 0) {
return defaultVal ? PathFilters.acceptAll() : PathFilters.rejectAll();
} else {
return new MultiplePathFilter(filters, includeFlags, defaultVal);
}
}
/**
* Determine if this filter builder is empty (i.e. has no path filters set on it).
*
* @return {@code true} if this builder is empty, {@code false} otherwise
*/
public boolean isEmpty() {
return filters.isEmpty();
}
}