/*
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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 2014 ForgeRock AS.
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*/
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package org.forgerock.opendj.config.conditions;
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import org.forgerock.opendj.config.AbstractManagedObjectDefinition;
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import org.forgerock.opendj.config.client.ManagedObject;
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import org.forgerock.opendj.config.client.ManagementContext;
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import org.forgerock.opendj.config.server.ConfigException;
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import org.forgerock.opendj.config.server.ServerManagedObject;
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import org.forgerock.opendj.ldap.LdapException;
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/**
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* This class consists exclusively of static methods that operate on or return
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* 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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/** {@inheritDoc} */
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public boolean evaluate(ManagementContext context, ManagedObject<?> managedObject) throws LdapException {
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return false;
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}
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/** {@inheritDoc} */
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public boolean evaluate(ServerManagedObject<?> managedObject) throws ConfigException {
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return false;
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}
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/** {@inheritDoc} */
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public void initialize(AbstractManagedObjectDefinition<?, ?> d) 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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/** {@inheritDoc} */
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public boolean evaluate(ManagementContext context, ManagedObject<?> managedObject) throws LdapException {
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return true;
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}
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/** {@inheritDoc} */
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public boolean evaluate(ServerManagedObject<?> managedObject) throws ConfigException {
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return true;
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}
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/** {@inheritDoc} */
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public void initialize(AbstractManagedObjectDefinition<?, ?> d) 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 only if
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* 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 AND.
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* @return Returns 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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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 only if a
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* 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 value.
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* @return Returns 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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public static Condition contains(String propertyName, 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 and only if
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* the first sub-condition evaluates to <code>true</code> and the second
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* sub-condition evaluates to <code>false</code>. This can be used to
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* represent if-then relationships.
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*
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* @param premise
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* The sub-condition which, when <code>true</code> implies that
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* the implication sub-condition must also be <code>true</code>.
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* @param implication
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* The sub-condition which, must be <code>true</code> when the
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* premise is <code>true</code>.
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* @return Returns a condition which evaluates to <code>false</code> if and
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* only if the first sub-condition evaluates to <code>true</code>
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* and the second sub-condition 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 only if a
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* 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> if and
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* only if a particular property has any values 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> if the
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* 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> if the
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* sub-condition is <code>false</code>, or <code>false</code> if the
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* sub-condition is <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 and only if
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* 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> if and
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* only if all of its sub-conditions are <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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