/*
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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.tools.dsconfig;
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import java.text.NumberFormat;
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import org.opends.server.admin.DurationPropertyDefinition;
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import org.opends.server.admin.DurationUnit;
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import org.opends.server.admin.PropertyDefinition;
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import org.opends.server.admin.PropertyValueVisitor;
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import org.opends.server.admin.SizePropertyDefinition;
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import org.opends.server.admin.SizeUnit;
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/**
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* A class responsible for displaying property values. This class
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* takes care of using locale specific formatting rules.
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*/
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final class PropertyValuePrinter {
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/**
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* Perform property type specific print formatting.
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*/
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private static class MyPropertyValueVisitor extends
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PropertyValueVisitor<String, Void> {
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// The requested size unit (null if the property's unit should be
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// used).
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private final SizeUnit sizeUnit;
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// The requested time unit (null if the property's unit should be
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// used).
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private final DurationUnit timeUnit;
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// Whether or not values should be displayed in a script-friendly
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// manner.
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private final boolean isScriptFriendly;
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// The formatter to use for numeric values.
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private final NumberFormat numberFormat;
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// Private constructor.
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private MyPropertyValueVisitor(SizeUnit sizeUnit, DurationUnit timeUnit,
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boolean isScriptFriendly) {
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this.sizeUnit = sizeUnit;
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this.timeUnit = timeUnit;
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this.isScriptFriendly = isScriptFriendly;
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this.numberFormat = NumberFormat.getNumberInstance();
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if (this.isScriptFriendly) {
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numberFormat.setGroupingUsed(false);
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numberFormat.setMaximumFractionDigits(2);
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} else {
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numberFormat.setGroupingUsed(true);
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numberFormat.setMaximumFractionDigits(2);
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}
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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 visitDuration(DurationPropertyDefinition d, Long v, Void p) {
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if (d.getUpperLimit() == null && (v < 0 || v == Long.MAX_VALUE)) {
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return "unlimited";
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}
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long ms = d.getBaseUnit().toMilliSeconds(v);
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// Use human-readable string representation by default.
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if (timeUnit == null && !isScriptFriendly && ms != 0) {
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return DurationUnit.toString(ms);
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}
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// Use either the specified unit or the property definition's
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// base unit.
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DurationUnit unit = timeUnit;
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if (unit == null) {
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unit = d.getBaseUnit();
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}
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StringBuilder builder = new StringBuilder();
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builder.append(numberFormat.format(unit.fromMilliSeconds(ms)));
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builder.append(' ');
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builder.append(unit.getShortName());
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return builder.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 String visitSize(SizePropertyDefinition d, Long v, Void p) {
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if (d.isAllowUnlimited() && v < 0) {
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return "unlimited";
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}
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SizeUnit unit = sizeUnit;
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if (unit == null) {
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if (isScriptFriendly) {
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// Assume users want a more accurate value.
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unit = SizeUnit.getBestFitUnitExact(v);
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} else {
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unit = SizeUnit.getBestFitUnit(v);
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}
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}
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StringBuilder builder = new StringBuilder();
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builder.append(numberFormat.format(unit.fromBytes(v)));
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builder.append(' ');
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builder.append(unit.getShortName());
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return builder.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 <T> String visitUnknown(PropertyDefinition<T> d, T v, Void p) {
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// For all other property definition types the default encoding
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// will do.
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return d.encodeValue(v);
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}
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}
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// The property value printer implementation.
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private final MyPropertyValueVisitor pimpl;
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/**
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* Creates a new property value printer.
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*
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* @param sizeUnit
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* The user requested size unit or <code>null</code> if
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* best-fit.
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* @param timeUnit
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* The user requested time unit or <code>null</code> if
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* best-fit.
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* @param isScriptFriendly
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* If values should be displayed in a script friendly
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* manner.
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*/
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public PropertyValuePrinter(SizeUnit sizeUnit, DurationUnit timeUnit,
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boolean isScriptFriendly) {
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this.pimpl = new MyPropertyValueVisitor(sizeUnit, timeUnit,
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isScriptFriendly);
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}
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/**
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* Print a property value according to the rules of this property
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* value printer.
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*
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* @param <T>
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* The type of property value.
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* @param pd
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* The property definition.
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* @param value
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* The property value.
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* @return Returns the string representation of the property value
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* encoded according to the rules of this property value
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* printer.
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*/
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public <T> String print(PropertyDefinition<T> pd, T value) {
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return pd.accept(pimpl, value, null);
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}
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}
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