/*
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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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* Copyright 2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.admin.condition;
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import org.opends.server.admin.AbstractManagedObjectDefinition;
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import org.opends.server.admin.client.AuthorizationException;
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import org.opends.server.admin.client.CommunicationException;
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import org.opends.server.admin.client.ManagedObject;
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import org.opends.server.admin.client.ManagementContext;
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import org.opends.server.admin.server.ServerManagedObject;
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import org.opends.server.config.ConfigException;
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/**
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* This class consists exclusively of static methods that operate on
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* or return conditions.
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*/
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public final class Conditions {
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/**
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* A condition which always evaluates to <code>false</code>.
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*/
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public static final Condition FALSE = new Condition() {
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/**
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* {@inheritDoc}
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*/
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public boolean evaluate(ManagementContext context,
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ManagedObject<?> managedObject) throws AuthorizationException,
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CommunicationException {
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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public boolean evaluate(ServerManagedObject<?> managedObject)
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throws ConfigException {
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return false;
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}
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/**
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* {@inheritDoc}
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*/
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public void initialize(AbstractManagedObjectDefinition<?, ?> d)
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throws Exception {
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// No implementation required.
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}
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};
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/**
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* A condition which always evaluates to <code>true</code>.
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*/
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public static final Condition TRUE = new Condition() {
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/**
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* {@inheritDoc}
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*/
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public boolean evaluate(ManagementContext context,
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ManagedObject<?> managedObject) throws AuthorizationException,
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CommunicationException {
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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public boolean evaluate(ServerManagedObject<?> managedObject)
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throws ConfigException {
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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public void initialize(AbstractManagedObjectDefinition<?, ?> d)
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throws Exception {
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// No implementation required.
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}
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};
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/**
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* Creates a condition which evaluates to <code>true</code> if and
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* only if all of its sub-conditions are <code>true</code>.
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*
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* @param conditions
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* The sub-conditions which be combined using a logical
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* AND.
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* @return Returns a condition which evaluates to <code>true</code>
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* if and only if all of its sub-conditions are
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* <code>true</code>.
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*/
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public static Condition and(Condition... conditions) {
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return new ANDCondition(conditions);
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}
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/**
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* Creates a condition which evaluates to <code>true</code> if and
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* only if a property contains a particular value.
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*
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* @param propertyName
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* The property name.
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* @param propertyStringValue
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* The string representation of the required property
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* value.
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* @return Returns a condition which evaluates to <code>true</code>
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* if and only if a property contains a particular value.
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*/
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public static Condition contains(String propertyName,
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String propertyStringValue) {
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return new ContainsCondition(propertyName, propertyStringValue);
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}
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/**
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* Creates a condition which evaluates to <code>false</code> if
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* and only if the first sub-condition evaluates to
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* <code>true</code> and the second sub-condition evaluates to
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* <code>false</code>. This can be used to represent if-then
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* relationships.
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*
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* @param premise
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* The sub-condition which, when <code>true</code>
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* implies that the implication sub-condition must also be
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* <code>true</code>.
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* @param implication
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* The sub-condition which, must be <code>true</code>
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* when the premise is <code>true</code>.
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* @return Returns a condition which evaluates to <code>false</code>
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* if and only if the first sub-condition evaluates to
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* <code>true</code> and the second sub-condition
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* evaluates to <code>false</code>.
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*/
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public static Condition implies(Condition premise, Condition implication) {
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return or(not(premise), implication);
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}
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/**
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* Creates a condition which evaluates to <code>true</code> if and
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* only if a particular property has any values specified.
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*
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* @param propertyName
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* The property name.
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* @return Returns a condition which evaluates to <code>true</code>
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* if and only if a particular property has any values
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* specified.
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*/
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public static Condition isPresent(String propertyName) {
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return new IsPresentCondition(propertyName);
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}
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/**
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* Creates a condition which evaluates to <code>true</code> if the
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* sub-condition is <code>false</code>, or <code>false</code>
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* if the sub-condition is <code>true</code>.
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*
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* @param condition
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* The sub-condition which will be inverted.
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* @return Returns a condition which evaluates to <code>true</code>
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* if the sub-condition is <code>false</code>, or
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* <code>false</code> if the sub-condition is
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* <code>true</code>.
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*/
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public static Condition not(Condition condition) {
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return new NOTCondition(condition);
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}
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/**
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* Creates a condition which evaluates to <code>false</code> if
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* and only if all of its sub-conditions are <code>false</code>.
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*
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* @param conditions
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* The sub-conditions which be combined using a logical OR.
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* @return Returns a condition which evaluates to <code>false</code>
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* if and only if all of its sub-conditions are
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* <code>false</code>.
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*/
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public static Condition or(Condition... conditions) {
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return new ORCondition(conditions);
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}
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// Prevent instantiation.
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private Conditions() {
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// No implementation required.
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}
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}
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