/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2008 Sun Microsystems, Inc.
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* Portions Copyright 2016 ForgeRock AS.
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*/
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package org.forgerock.opendj.config;
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import java.util.Collection;
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import java.util.Collections;
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/** An interface which can be used to initialize the contents of a managed object. */
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public interface PropertyProvider {
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/** A property provider which always returns empty property values, indicating default behavior. */
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PropertyProvider DEFAULT_PROVIDER = new PropertyProvider() {
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@Override
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public <T> Collection<T> getPropertyValues(PropertyDefinition<T> d) {
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return Collections.<T> emptySet();
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}
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};
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/**
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* Get the property values associated with the specified property
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* definition.
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* <p>
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* Implementations are not required to validate the values that they
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* provide. Specifically:
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* <ul>
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* <li>they do not need to guarantee that the provided values are valid
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* according to the property's syntax
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* <li>they do not need to provide values for mandatory properties
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* <li>they do not need to ensure that single-valued properties do contain
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* at most one value.
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* </ul>
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* The returned set of values is allowed to contain duplicates.
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*
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* @param <T>
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* The underlying type of the property.
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* @param d
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* The Property definition.
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* @return Returns a newly allocated set containing a copy of the property's
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* values. An empty set indicates that the property has no values
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* defined and any default behavior is applicable.
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* @throws IllegalArgumentException
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* If this property provider does not recognise the requested
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* property definition.
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*/
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<T> Collection<T> getPropertyValues(PropertyDefinition<T> d);
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}
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