/*
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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 legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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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 legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* 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.forgerock.opendj.config.client.spi;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.SortedSet;
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import java.util.TreeSet;
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import org.forgerock.opendj.config.PropertyException;
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import org.forgerock.opendj.config.PropertyDefinition;
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import org.forgerock.opendj.config.PropertyOption;
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/**
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* A set of properties. Instances of this class can be used as the core of a
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* managed object implementation.
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*/
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public final class PropertySet {
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/**
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* Internal property implementation.
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*
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* @param <T>
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* The type of the property.
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*/
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private static final class MyProperty<T> implements Property<T> {
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// The active set of values.
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private final SortedSet<T> activeValues;
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// The definition associated with this property.
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private final PropertyDefinition<T> d;
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// The default set of values (read-only).
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private final SortedSet<T> defaultValues;
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// The pending set of values.
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private final SortedSet<T> pendingValues;
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/**
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* Create a property with the provided sets of pre-validated default and
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* active values.
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*
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* @param pd
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* The property definition.
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* @param defaultValues
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* The set of default values for the property.
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* @param activeValues
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* The set of active values for the property.
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*/
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public MyProperty(PropertyDefinition<T> pd, Collection<T> defaultValues, Collection<T> activeValues) {
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this.d = pd;
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SortedSet<T> sortedDefaultValues = new TreeSet<T>(pd);
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sortedDefaultValues.addAll(defaultValues);
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this.defaultValues = Collections.unmodifiableSortedSet(sortedDefaultValues);
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this.activeValues = new TreeSet<T>(pd);
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this.activeValues.addAll(activeValues);
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// Initially the pending values is the same as the active
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// values.
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this.pendingValues = new TreeSet<T>(this.activeValues);
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}
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/**
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* Makes the pending values active.
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*/
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public void commit() {
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activeValues.clear();
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activeValues.addAll(pendingValues);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public SortedSet<T> getActiveValues() {
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return Collections.unmodifiableSortedSet(activeValues);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public SortedSet<T> getDefaultValues() {
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return defaultValues;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public SortedSet<T> getEffectiveValues() {
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SortedSet<T> values = getPendingValues();
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if (values.isEmpty()) {
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values = getDefaultValues();
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}
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return values;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public SortedSet<T> getPendingValues() {
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return Collections.unmodifiableSortedSet(pendingValues);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public PropertyDefinition<T> getPropertyDefinition() {
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return d;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean isEmpty() {
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return pendingValues.isEmpty();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean isModified() {
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if (activeValues.size() == pendingValues.size() && activeValues.containsAll(pendingValues)) {
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return false;
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}
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return true;
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}
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/**
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* Replace all pending values of this property with the provided values.
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*
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* @param c
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* The new set of pending property values.
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*/
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public void setPendingValues(Collection<T> c) {
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pendingValues.clear();
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pendingValues.addAll(c);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String toString() {
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return getEffectiveValues().toString();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public boolean wasEmpty() {
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return activeValues.isEmpty();
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}
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}
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// The properties.
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private final Map<PropertyDefinition<?>, MyProperty<?>> properties;
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/**
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* Creates a new empty property set.
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*/
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public PropertySet() {
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this.properties = new HashMap<PropertyDefinition<?>, MyProperty<?>>();
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}
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/**
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* Creates a property with the provided sets of pre-validated default and
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* active values.
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*
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* @param <T>
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* The type of the property.
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* @param pd
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* The property definition.
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* @param defaultValues
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* The set of default values for the property.
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* @param activeValues
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* The set of active values for the property.
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*/
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public <T> void addProperty(PropertyDefinition<T> pd, Collection<T> defaultValues, Collection<T> activeValues) {
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MyProperty<T> p = new MyProperty<T>(pd, defaultValues, activeValues);
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properties.put(pd, p);
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}
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/**
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* Get the property associated with the specified property definition.
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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 the property associated with the specified property
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* definition.
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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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@SuppressWarnings("unchecked")
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public <T> Property<T> getProperty(PropertyDefinition<T> d) {
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if (!properties.containsKey(d)) {
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throw new IllegalArgumentException("Unknown property " + d.getName());
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}
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return (Property<T>) properties.get(d);
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public String toString() {
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StringBuilder builder = new StringBuilder();
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builder.append('{');
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for (Map.Entry<PropertyDefinition<?>, MyProperty<?>> entry : properties.entrySet()) {
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builder.append(entry.getKey().getName());
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builder.append('=');
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builder.append(entry.getValue().toString());
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builder.append(' ');
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}
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builder.append('}');
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return builder.toString();
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}
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/**
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* Makes all pending values active.
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*/
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void commit() {
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for (MyProperty<?> p : properties.values()) {
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p.commit();
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}
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}
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/**
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* Set a new pending values for the specified property.
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* <p>
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* See the class description for more information regarding pending values.
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*
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* @param <T>
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* The type of the property to be modified.
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* @param d
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* The property to be modified.
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* @param values
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* A non-<code>null</code> set of new pending values for the
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* property (an empty set indicates that the property should be
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* reset to its default behavior). The set will not be referenced
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* by this managed object.
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* @throws PropertyException
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* If a new pending value is deemed to be invalid according to
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* the property definition.
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* @throws PropertyException
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* If an attempt was made to add multiple pending values to a
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* single-valued property.
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* @throws PropertyException
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* If an attempt was made to remove a mandatory property.
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* @throws IllegalArgumentException
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* If the specified property definition is not associated with
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* this managed object.
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*/
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<T> void setPropertyValues(PropertyDefinition<T> d, Collection<T> values) {
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MyProperty<T> property = (MyProperty<T>) getProperty(d);
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if (values.size() > 1 && !d.hasOption(PropertyOption.MULTI_VALUED)) {
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throw PropertyException.propertyIsSingleValuedException(d);
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}
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if (values.isEmpty() && d.hasOption(PropertyOption.MANDATORY)) {
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// But only if there are no default values.
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if (property.getDefaultValues().isEmpty()) {
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throw PropertyException.propertyIsMandatoryException(d);
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}
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}
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// Validate each value.
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for (T e : values) {
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if (e == null) {
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throw new NullPointerException();
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}
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d.validateValue(e);
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}
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// Update the property.
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property.setPendingValues(values);
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}
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}
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