org.wildfly.security.permission.NameSetPermissionCollection Maven / Gradle / Ivy
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* Copyright 2016 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.wildfly.security.permission;
import org.wildfly.common.Assert;
import org.wildfly.security.util.StringEnumeration;
/**
* A permission collection for permissions with a finite set of names, which is based on a simple bit set.
* In this type of collection, each bit represents a unique permission of a given name. This type is not suitable for
* permissions with actions.
*
* @author David M. Lloyd
*/
public abstract class NameSetPermissionCollection extends AbstractPermissionCollection {
private static final long serialVersionUID = - 9191397492173027470L;
private final StringEnumeration nameEnumeration;
/**
* Construct a new instance. The name enumeration is pulled from the source permission object.
*
* @param sourcePermission the source permission object (must not be {@code null})
* @return the permission collection
*/
public static AbstractPermissionCollection newInstance(final AbstractNameSetOnlyPermission sourcePermission) {
return newInstance(sourcePermission, sourcePermission.getNameEnumeration());
}
/**
* Construct a new instance.
*
* @param sourcePermission the source permission object (must not be {@code null})
* @param nameEnumeration the name enumeration for this permission type (must not be {@code null})
* @return the permission collection
*/
public static AbstractPermissionCollection newInstance(final AbstractPermission sourcePermission, final StringEnumeration nameEnumeration) {
Assert.checkNotNullParam("sourcePermission", sourcePermission);
Assert.checkNotNullParam("nameEnumeration", nameEnumeration);
final int size = nameEnumeration.size();
if (size <= 32) {
return new IntNameSetPermissionCollection(sourcePermission, nameEnumeration);
} else if (size <= 64) {
return new LongNameSetPermissionCollection(sourcePermission, nameEnumeration);
} else {
// TODO: add GiantNameSetPermissionCollection which uses AtomicIntegerArray
throw Assert.unsupported();
}
}
NameSetPermissionCollection(final AbstractPermission sourcePermission, final StringEnumeration nameEnumeration) {
super(sourcePermission);
this.nameEnumeration = nameEnumeration;
}
StringEnumeration getNameEnumeration() {
return nameEnumeration;
}
}