/*
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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;
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import org.forgerock.util.Reject;
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import java.util.EnumSet;
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/**
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* Duration property definition.
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* <p>
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* A duration property definition comprises of:
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* <ul>
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* <li>a <i>base unit</i> - specifies the minimum granularity which can be used
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* to specify duration property values. For example, if the base unit is in
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* seconds then values represented in milliseconds will not be permitted. The
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* default base unit is seconds
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* <li>an optional <i>maximum unit</i> - specifies the biggest duration unit
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* which can be used to specify duration property values. Values presented in
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* units greater than this unit will not be permitted. There is no default
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* maximum unit
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* <li><i>lower limit</i> - specifies the smallest duration permitted by the
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* property. The default lower limit is 0 and can never be less than 0
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* <li>an optional <i>upper limit</i> - specifies the biggest duration permitted
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* by the property. By default, there is no upper limit
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* <li>support for <i>unlimited</i> durations - when permitted users can specify
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* "unlimited" durations. These are represented using the decoded value, -1, or
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* the encoded string value "unlimited". By default, unlimited durations are not
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* permitted. In addition, it is not possible to define an upper limit and
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* support unlimited values.
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* </ul>
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* Decoded values are represented using <code>long</code> values in the base
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* unit defined for the duration property definition.
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*/
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public final class DurationPropertyDefinition extends PropertyDefinition<Long> {
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/** String used to represent unlimited durations. */
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private static final String UNLIMITED = "unlimited";
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/** The base unit for this property definition. */
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private final DurationUnit baseUnit;
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/** The optional maximum unit for this property definition. */
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private final DurationUnit maximumUnit;
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/** The lower limit of the property value in milli-seconds. */
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private final long lowerLimit;
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/** The optional upper limit of the property value in milli-seconds. */
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private final Long upperLimit;
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/**
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* Indicates whether this property allows the use of the "unlimited"
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* duration value (represented using a -1L or the string
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* "unlimited").
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*/
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private final boolean allowUnlimited;
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/**
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* An interface for incrementally constructing duration property
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* definitions.
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*/
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public static final class Builder extends AbstractBuilder<Long, DurationPropertyDefinition> {
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/** The base unit for this property definition. */
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private DurationUnit baseUnit = DurationUnit.SECONDS;
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/** The optional maximum unit for this property definition. */
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private DurationUnit maximumUnit;
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/** The lower limit of the property value in milli-seconds. */
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private long lowerLimit;
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/** The optional upper limit of the property value in milli-seconds. */
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private Long upperLimit;
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/**
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* Indicates whether this property allows the use of the
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* "unlimited" duration value (represented using a -1L or the
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* string "unlimited").
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*/
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private boolean allowUnlimited;
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/** Private constructor. */
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private Builder(AbstractManagedObjectDefinition<?, ?> d, String propertyName) {
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super(d, propertyName);
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}
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/**
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* Set the base unit for this property definition (values including
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* limits are specified in this unit). By default a duration property
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* definition uses seconds.
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*
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* @param unit
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* The string representation of the base unit (must not be
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* <code>null</code>).
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* @throws IllegalArgumentException
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* If the provided unit name did not correspond to a known
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* duration unit, or if the base unit is bigger than the
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* maximum unit.
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*/
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public final void setBaseUnit(String unit) {
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Reject.ifNull(unit);
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setBaseUnit(DurationUnit.getUnit(unit));
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}
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/**
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* Set the base unit for this property definition (values including
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* limits are specified in this unit). By default a duration property
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* definition uses seconds.
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*
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* @param unit
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* The base unit (must not be <code>null</code>).
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* @throws IllegalArgumentException
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* If the provided base unit is bigger than the maximum
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* unit.
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*/
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public final void setBaseUnit(DurationUnit unit) {
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Reject.ifNull(unit);
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// Make sure that the base unit is not bigger than the maximum unit.
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if (maximumUnit != null && unit.getDuration() > maximumUnit.getDuration()) {
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throw new IllegalArgumentException("Base unit greater than maximum unit");
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}
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this.baseUnit = unit;
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}
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/**
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* Set the maximum unit for this property definition. By default there
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* is no maximum unit.
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*
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* @param unit
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* The string representation of the maximum unit, or
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* <code>null</code> if there should not be a maximum unit.
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* @throws IllegalArgumentException
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* If the provided unit name did not correspond to a known
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* duration unit, or if the maximum unit is smaller than the
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* base unit.
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*/
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public final void setMaximumUnit(String unit) {
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setMaximumUnit(unit != null ? DurationUnit.getUnit(unit) : null);
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}
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/**
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* Set the maximum unit for this property definition. By default there
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* is no maximum unit.
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*
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* @param unit
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* The maximum unit, or <code>null</code> if there should not
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* be a maximum unit.
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* @throws IllegalArgumentException
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* If the provided maximum unit is smaller than the base
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* unit.
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*/
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public final void setMaximumUnit(DurationUnit unit) {
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// Make sure that the maximum unit is not smaller than the base unit.
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if (unit != null && unit.getDuration() < baseUnit.getDuration()) {
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throw new IllegalArgumentException("Maximum unit smaller than base unit");
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}
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this.maximumUnit = unit;
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}
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/**
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* Set the lower limit in milli-seconds.
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*
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* @param lowerLimit
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* The new lower limit (must be >= 0) in milli-seconds.
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* @throws IllegalArgumentException
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* If a negative lower limit was specified, or the lower
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* limit is greater than the upper limit.
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*/
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public final void setLowerLimit(long lowerLimit) {
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if (lowerLimit < 0) {
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throw new IllegalArgumentException("Negative lower limit");
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}
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if (upperLimit != null && lowerLimit > upperLimit) {
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throw new IllegalArgumentException("Lower limit greater than upper limit");
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}
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this.lowerLimit = lowerLimit;
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}
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/**
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* Set the lower limit using a string representation of the limit. If
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* the string does not specify a unit, the current base unit will be
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* used.
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*
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* @param lowerLimit
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* The string representation of the new lower limit.
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* @throws IllegalArgumentException
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* If the lower limit could not be parsed, or if a negative
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* lower limit was specified, or the lower limit is greater
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* than the upper limit.
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*/
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public final void setLowerLimit(String lowerLimit) {
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setLowerLimit(DurationUnit.parseValue(lowerLimit, baseUnit));
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}
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/**
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* Set the upper limit in milli-seconds.
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*
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* @param upperLimit
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* The new upper limit in milli-seconds, or <code>null</code>
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* if there is no upper limit.
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* @throws IllegalArgumentException
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* If a negative upper limit was specified, or the lower
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* limit is greater than the upper limit or unlimited
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* durations are permitted.
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*/
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public final void setUpperLimit(Long upperLimit) {
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if (upperLimit != null) {
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if (upperLimit < 0) {
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throw new IllegalArgumentException("Negative upper limit");
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}
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if (lowerLimit > upperLimit) {
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throw new IllegalArgumentException("Lower limit greater than upper limit");
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}
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if (allowUnlimited) {
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throw new IllegalArgumentException("Upper limit specified when unlimited durations are permitted");
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}
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}
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this.upperLimit = upperLimit;
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}
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/**
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* Set the upper limit using a string representation of the limit. If
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* the string does not specify a unit, the current base unit will be
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* used.
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*
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* @param upperLimit
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* The string representation of the new upper limit, or
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* <code>null</code> if there is no upper limit.
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* @throws IllegalArgumentException
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* If the upper limit could not be parsed, or if the lower
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* limit is greater than the upper limit.
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*/
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public final void setUpperLimit(String upperLimit) {
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setUpperLimit(upperLimit != null ? DurationUnit.parseValue(upperLimit, baseUnit) : null);
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}
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/**
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* Specify whether or not this property definition will allow unlimited
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* values (default is false).
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*
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* @param allowUnlimited
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* <code>true</code> if the property will allow unlimited
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* values, or <code>false</code> otherwise.
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* @throws IllegalArgumentException
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* If unlimited values are to be permitted but there is an
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* upper limit specified.
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*/
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public final void setAllowUnlimited(boolean allowUnlimited) {
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if (allowUnlimited && upperLimit != null) {
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throw new IllegalArgumentException("Upper limit specified when unlimited durations are permitted");
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}
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this.allowUnlimited = allowUnlimited;
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}
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/** {@inheritDoc} */
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@Override
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protected DurationPropertyDefinition buildInstance(AbstractManagedObjectDefinition<?, ?> d,
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String propertyName, EnumSet<PropertyOption> options, AdministratorAction adminAction,
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DefaultBehaviorProvider<Long> defaultBehavior) {
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return new DurationPropertyDefinition(d, propertyName, options, adminAction, defaultBehavior, baseUnit,
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maximumUnit, lowerLimit, upperLimit, allowUnlimited);
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}
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}
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/**
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* Create a duration property definition builder.
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*
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* @param d
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* The managed object definition associated with this property
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* definition.
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* @param propertyName
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* The property name.
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* @return Returns the new integer property definition builder.
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*/
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public static Builder createBuilder(AbstractManagedObjectDefinition<?, ?> d, String propertyName) {
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return new Builder(d, propertyName);
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}
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/** Private constructor. */
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private DurationPropertyDefinition(AbstractManagedObjectDefinition<?, ?> d, String propertyName,
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EnumSet<PropertyOption> options, AdministratorAction adminAction,
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DefaultBehaviorProvider<Long> defaultBehavior, DurationUnit baseUnit, DurationUnit maximumUnit,
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Long lowerLimit, Long upperLimit, boolean allowUnlimited) {
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super(d, Long.class, propertyName, options, adminAction, defaultBehavior);
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this.baseUnit = baseUnit;
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this.maximumUnit = maximumUnit;
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this.lowerLimit = lowerLimit;
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this.upperLimit = upperLimit;
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this.allowUnlimited = allowUnlimited;
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}
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/**
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* Get the base unit for this property definition (values including limits
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* are specified in this unit).
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*
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* @return Returns the base unit for this property definition (values
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* including limits are specified in this unit).
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*/
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public DurationUnit getBaseUnit() {
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return baseUnit;
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}
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/**
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* Get the maximum unit for this property definition if specified.
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*
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* @return Returns the maximum unit for this property definition, or
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* <code>null</code> if there is no maximum unit.
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*/
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public DurationUnit getMaximumUnit() {
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return maximumUnit;
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}
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/**
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* Get the lower limit in milli-seconds.
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*
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* @return Returns the lower limit in milli-seconds.
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*/
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public long getLowerLimit() {
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return lowerLimit;
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}
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/**
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* Get the upper limit in milli-seconds.
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*
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* @return Returns the upper limit in milli-seconds, or <code>null</code> if
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* there is no upper limit.
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*/
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public Long getUpperLimit() {
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return upperLimit;
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}
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/**
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* Determine whether this property allows unlimited durations.
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*
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* @return Returns <code>true</code> if this this property allows unlimited
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* durations.
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*/
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public boolean isAllowUnlimited() {
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return allowUnlimited;
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}
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/** {@inheritDoc} */
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@Override
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public void validateValue(Long value) {
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Reject.ifNull(value);
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long nvalue = baseUnit.toMilliSeconds(value);
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if (!allowUnlimited && nvalue < lowerLimit) {
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throw PropertyException.illegalPropertyValueException(this, value);
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// unlimited allowed
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} else if (nvalue >= 0 && nvalue < lowerLimit) {
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throw PropertyException.illegalPropertyValueException(this, value);
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}
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if (upperLimit != null && nvalue > upperLimit) {
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throw PropertyException.illegalPropertyValueException(this, value);
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}
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}
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/** {@inheritDoc} */
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@Override
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public String encodeValue(Long value) {
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Reject.ifNull(value);
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// Make sure that we correctly encode negative values as "unlimited".
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if (allowUnlimited && value < 0) {
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return UNLIMITED;
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}
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// Encode the size value using the base unit.
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StringBuilder builder = new StringBuilder();
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builder.append(value);
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builder.append(' ');
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builder.append(baseUnit.toString());
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return builder.toString();
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}
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/** {@inheritDoc} */
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@Override
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public Long decodeValue(String value) {
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Reject.ifNull(value);
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// First check for the special "unlimited" value when necessary.
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if (allowUnlimited && UNLIMITED.equalsIgnoreCase(value.trim())) {
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return -1L;
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}
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// Parse the string representation.
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long ms;
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try {
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ms = DurationUnit.parseValue(value);
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} catch (NumberFormatException e) {
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throw PropertyException.illegalPropertyValueException(this, value);
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}
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// Check the unit is in range - values must not be more granular
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// than the base unit.
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if (ms % baseUnit.getDuration() != 0) {
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throw PropertyException.illegalPropertyValueException(this, value);
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}
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// Convert the value a long in the property's required unit.
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Long i = (long) baseUnit.fromMilliSeconds(ms);
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try {
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validateValue(i);
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return i;
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} catch (PropertyException e) {
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throw PropertyException.illegalPropertyValueException(this, value);
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}
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}
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/** {@inheritDoc} */
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@Override
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public <R, P> R accept(PropertyDefinitionVisitor<R, P> v, P p) {
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return v.visitDuration(this, p);
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}
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/** {@inheritDoc} */
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@Override
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public <R, P> R accept(PropertyValueVisitor<R, P> v, Long value, P p) {
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return v.visitDuration(this, value, p);
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}
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/** {@inheritDoc} */
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@Override
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public void toString(StringBuilder builder) {
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super.toString(builder);
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builder.append(" baseUnit=");
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builder.append(baseUnit);
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if (maximumUnit != null) {
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builder.append(" maximumUnit=");
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builder.append(maximumUnit);
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}
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builder.append(" lowerLimit=");
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builder.append(lowerLimit);
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builder.append("ms");
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if (upperLimit != null) {
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builder.append(" upperLimit=");
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builder.append(upperLimit);
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builder.append("ms");
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}
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builder.append(" allowUnlimited=");
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builder.append(allowUnlimited);
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}
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/** {@inheritDoc} */
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@Override
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public int compare(Long o1, Long o2) {
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return o1.compareTo(o2);
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}
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}
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