001// Copyright 2004, 2005 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry.coerce;
016
017/**
018 * Converts an arbitrary number to a boolean; uses the long value of the number and evaluates to
019 * true unless the value is zero.
020 * 
021 * @author Howard M. Lewis Ship
022 * @since 4.0
023 */
024public final class NumberToBooleanConverter implements TypeConverter
025{
026    public Object convertValue(Object value)
027    {
028        Number n = (Number) value;
029
030        return n.longValue() == 0 ? Boolean.FALSE : Boolean.TRUE;
031    }
032}