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/*
* 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 java.security.cert;
import java.util.Collection;
import java.util.Collections;
/**
* The parameters to initialize a <i>Collection</i> type {@code CertStore} instance.
* <p>
* It is used to specify the {@code Collection} where the {@code CertStore} will
* retrieve the certificates and CRLs from.
*/
public class CollectionCertStoreParameters implements CertStoreParameters {
// Default empty and immutable collection.
// Used if <code>CollectionCertStoreParameters</code>instance
// created by the no arg constructor
private static final Collection<?> defaultCollection = Collections.EMPTY_SET;
// A <code>Collection</code> of <code>Certificate</code>s
// and <code>CRL</code>s
private final Collection<?> collection;
/**
* Creates a new {@code CollectionCertStoreParameters} without a collection.
* <p>
* The default collection is an empty and unmodifiable {@code Collection}.
*/
public CollectionCertStoreParameters() {
this.collection = defaultCollection;
}
/**
* Creates a new {@code CollectionCertStoreParameters} with the specified
* collection.
* <p>
* The specified collection is not copied and therefore may be modified at
* any time.
*
* @param collection
* the collection where the {@code Certificate}s and {@code CRL}s
* will be retrieved from.
* @throws NullPointerException
* if {@code collection is null}.
*/
public CollectionCertStoreParameters(Collection<?> collection) {
this.collection = collection;
if (this.collection == null) {
throw new NullPointerException();
}
}
/**
* Clones this {@code CollectionCertStoreParameters} instance, but not the
* underlying collection.
*
* @return the cloned instance.
*/
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
return null;
}
}
/**
* Returns the collection where the {@code Certificate}s and {@code CRL}s
* are retrieved from.
*
* @return the collection where the {@code Certificate}s and {@code CRL}s
* will be retrieved from.
*/
public Collection<?> getCollection() {
return collection;
}
/**
* Returns the string representation of this instance.
*
* @return the string representation of this instance.
*/
public String toString() {
StringBuilder sb =
new StringBuilder("CollectionCertStoreParameters: [\ncollection: ");
sb.append(getCollection().toString());
sb.append("\n]");
return sb.toString();
}
}
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