/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.admin;
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import java.net.InetAddress;
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import org.opends.server.types.AddressMask;
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import org.opends.server.types.AttributeType;
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import org.opends.server.types.DN;
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/**
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* A visitor of property values, in the style of the visitor design
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* pattern. Classes implementing this interface can query a property a
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* value and its associated property definition in a type-safe manner
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* when the kind of property value is unknown at compile time. When a
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* visitor is passed to a property definition's accept method, the
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* corresponding visit method most applicable to that property
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* definition is invoked.
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* <p>
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* Each <code>visitXXX</code> method is provided with a default
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* implementation which calls
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* {@link #visitUnknown(PropertyDefinition, Object, Object)}.
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* Sub-classes can override any or all of the methods to provide their
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* own type-specific behavior.
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*
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* @param <R>
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* The return type of this visitor's methods. Use
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* {@link java.lang.Void} for visitors that do not need to
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* return results.
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* @param <P>
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* The type of the additional parameter to this visitor's
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* methods. Use {@link java.lang.Void} for visitors that do
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* not need an additional parameter.
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*/
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public abstract class PropertyValueVisitor<R, P> {
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/**
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* Default constructor.
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*/
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protected PropertyValueVisitor() {
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// No implementation required.
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}
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/**
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* Visit an aggregation property value.
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*
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* @param <C>
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* The type of client managed object configuration that
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* this aggregation property definition refers to.
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* @param <S>
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* The type of server managed object configuration that
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* this aggregation property definition refers to.
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* @param d
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* The aggregation property definition to visit.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public <C extends ConfigurationClient, S extends Configuration>
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R visitAggregation(
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AggregationPropertyDefinition<C, S> d, String v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit an attribute type.
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*
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* @param d
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* The attribute type property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitAttributeType(AttributeTypePropertyDefinition d,
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AttributeType v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a boolean.
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*
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* @param d
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* The boolean property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitBoolean(BooleanPropertyDefinition d, Boolean v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a class.
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*
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* @param d
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* The class property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitClass(ClassPropertyDefinition d, String v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a DN.
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*
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* @param d
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* The DN property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitDN(DNPropertyDefinition d, DN v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a duration.
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*
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* @param d
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* The duration property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitDuration(DurationPropertyDefinition d, Long v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit an enumeration.
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*
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* @param <E>
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* The enumeration that should be used for values of the
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* property definition.
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* @param v
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* The property value to visit.
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* @param d
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* The enumeration property definition.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public <E extends Enum<E>>
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R visitEnum(EnumPropertyDefinition<E> d, E v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit an integer.
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*
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* @param d
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* The integer property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitInteger(IntegerPropertyDefinition d, Integer v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a IP address.
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*
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* @param d
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* The IP address property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitIPAddress(IPAddressPropertyDefinition d, InetAddress v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a IP address mask.
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*
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* @param d
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* The IP address mask property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitIPAddressMask(IPAddressMaskPropertyDefinition d, AddressMask v,
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P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a size.
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*
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* @param d
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* The size property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitSize(SizePropertyDefinition d, Long v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit a string.
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*
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* @param d
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* The string property definition.
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* @param v
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* The property value to visit.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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*/
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public R visitString(StringPropertyDefinition d, String v, P p) {
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return visitUnknown(d, v, p);
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}
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/**
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* Visit an unknown type of property value. Implementations of this
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* method can provide default behavior for unknown types of
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* property.
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* <p>
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* The default implementation of this method throws an
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* {@link UnknownPropertyDefinitionException}. Sub-classes can
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* override this method with their own default behavior.
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*
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* @param <T>
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* The type of property value to visit.
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* @param d
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* The property definition.
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* @param v
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* The property value.
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* @param p
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* A visitor specified parameter.
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* @return Returns a visitor specified result.
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* @throws UnknownPropertyDefinitionException
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* Visitor implementations may optionally throw this
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* exception.
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*/
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public <T> R visitUnknown(PropertyDefinition<T> d, T v, P p)
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throws UnknownPropertyDefinitionException {
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throw new UnknownPropertyDefinitionException(d, p);
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}
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}
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