/*************************************************************************
* Copyright 2009-2012 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
*
* This file may incorporate work covered under the following copyright
* and permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE
* THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL,
* COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE,
* AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA,
* SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY,
* WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION,
* REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO
* IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT
* NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS.
************************************************************************/
package com.eucalyptus.configurable;
import java.util.Map;
import org.apache.log4j.Logger;
import com.google.common.base.Function;
import com.google.common.collect.Maps;
public abstract class PropertyTypeParser<T> implements Function<String,T> {
private static Logger LOG = Logger.getLogger( PropertyTypeParser.class );
private static Map<Class, PropertyTypeParser> typeParsers = Maps.newHashMap( );
private static PropertyTypeParser<Float> floatParser = new PropertyTypeParser<Float>( ) {
@Override
public Float apply( String property ) {
return Float.parseFloat( property );
}
};
private static PropertyTypeParser<Double> doubleParser = new PropertyTypeParser<Double>( ) {
@Override
public Double apply( String property ) {
return Double.parseDouble( property );
}
};
private static PropertyTypeParser<Integer> integerParser = new PropertyTypeParser<Integer>( ) {
@Override
public Integer apply( String property ) {
return Integer.parseInt( property );
}
};
private static PropertyTypeParser<Long> longParser = new PropertyTypeParser<Long>( ) {
@Override
public Long apply( String property ) {
return Long.parseLong( property );
}
};
private static PropertyTypeParser<Boolean> booleanParser = new PropertyTypeParser<Boolean>( ) {
@Override
public Boolean apply( String property ) {
return Boolean.parseBoolean( property );
}
};
private static PropertyTypeParser<String> stringParser = new PropertyTypeParser<String>( ) {
@Override
public String apply( String property ) {
return property;
}
};
static {
typeParsers.put( Integer.class, integerParser );
typeParsers.put( int.class, integerParser );
typeParsers.put( Long.class, longParser );
typeParsers.put( long.class, longParser );
typeParsers.put( Float.class, floatParser );
typeParsers.put( float.class, floatParser );
typeParsers.put( Double.class, doubleParser );
typeParsers.put( double.class, doubleParser );
typeParsers.put( Boolean.class, booleanParser );
typeParsers.put( boolean.class, booleanParser );
typeParsers.put( String.class, stringParser );
}
public static void addTypeParser( Class c, PropertyTypeParser p ) {
typeParsers.put( c, p );
}
public static PropertyTypeParser get( Class c ) {
if ( !typeParsers.containsKey( c ) || typeParsers.get( c ) == null ) {
RuntimeException r = new RuntimeException( "Invalid configurable type: " + c );
LOG.fatal( r, r );
throw r;
} else {
return typeParsers.get( c );
}
}
public abstract T apply( String property );
}