/******************************************************************************
* JBoss, a division of Red Hat *
* Copyright 2006, Red Hat Middleware, LLC, and individual *
* contributors as indicated by the @authors tag. See the *
* copyright.txt in the distribution for a full listing of *
* individual contributors. *
* *
* This is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation; either version 2.1 of *
* the License, or (at your option) any later version. *
* *
* This software 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this software; if not, write to the Free *
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA *
* 02110-1301 USA, or see the FSF site: http://www.fsf.org. *
******************************************************************************/
package org.gatein.common.value;
import org.gatein.common.util.FormatConversionException;
import org.gatein.common.util.NullConversionException;
/**
* @author <a href="mailto:julien@jboss.org">Julien Viet</a>
* @version $Revision: 7200 $
*/
@Deprecated
public class Helper
{
public static final int[] EMPTY_INT_ARRAY = new int[0];
public static final boolean[] EMPTY_BOOLEAN_ARRAY = new boolean[0];
public static final Object[] EMPTY_OBJECT_ARRAY = new Object[0];
public static final String[] EMPTY_STRING_ARRAY = new String[0];
public static final Converter FLOAT_CONVERTER = new Converter()
{
public boolean accept(Class clazz)
{
return Float.class.equals(clazz);
}
public Object toObject(String value) throws NullConversionException, FormatConversionException
{
if (value == null)
{
return null;
}
try
{
return Float.valueOf(value);
}
catch (NumberFormatException e)
{
throw new FormatConversionException();
}
}
public String toString(Object value) throws NullConversionException, FormatConversionException
{
if (value == null)
{
return null;
}
if (!(value instanceof Float))
{
throw new FormatConversionException();
}
return value.toString();
}
};
public static final Converter INTEGER_CONVERTER = new Converter()
{
public boolean accept(Class clazz)
{
return Integer.class.equals(clazz);
}
public Object toObject(String value) throws NullConversionException, FormatConversionException
{
if (value == null)
{
return null;
}
try
{
return Integer.valueOf(value);
}
catch (NumberFormatException e)
{
throw new FormatConversionException();
}
}
public String toString(Object value) throws NullConversionException, FormatConversionException
{
if (value == null)
{
return null;
}
if (!(value instanceof Integer))
{
throw new FormatConversionException();
}
return value.toString();
}
};
public static final Converter BOOLEAN_CONVERTER = new Converter()
{
public boolean accept(Class clazz)
{
return Boolean.class.equals(clazz);
}
public Object toObject(String value) throws NullConversionException, FormatConversionException
{
if (value == null)
{
return null;
}
return Boolean.valueOf(Helper.toBoolean(value));
}
public String toString(Object value) throws NullConversionException, FormatConversionException
{
if (value == null)
{
return null;
}
if (!(value instanceof Boolean))
{
throw new FormatConversionException();
}
return value.toString();
}
};
public static int toInt(String value) throws NullConversionException, FormatConversionException
{
try
{
if (value == null)
{
throw new NullConversionException();
}
return Integer.parseInt(value);
}
catch (NumberFormatException e)
{
throw new FormatConversionException();
}
}
public static boolean toBoolean(String value) throws NullConversionException, FormatConversionException
{
if ("true".equals(value))
{
return true;
}
else if ("false".equals(value))
{
return false;
}
else if (value == null)
{
throw new NullConversionException();
}
else
{
throw new FormatConversionException();
}
}
public static String toString(int value)
{
return Integer.toString(value);
}
public static String toString(boolean value)
{
return Boolean.toString(value);
}
public static String toString(Object value, Converter converter) throws NullConversionException, FormatConversionException, IllegalArgumentException
{
if (converter == null)
{
throw new IllegalArgumentException();
}
return converter.toString(value);
}
public static String[] toStringArray(int[] values) throws IllegalArgumentException
{
if (values == null)
{
throw new IllegalArgumentException();
}
String[] strings = new String[values.length];
for (int i = 0;i < strings.length;i++)
{
strings[i] = Integer.toString(values[i]);
}
return strings;
}
public static String[] toStringArray(boolean[] values) throws IllegalArgumentException
{
if (values == null)
{
throw new IllegalArgumentException();
}
String[] strings = new String[values.length];
for (int i = 0;i < strings.length;i++)
{
strings[i] = Boolean.toString(values[i]);
}
return strings;
}
public static String[] toStringArray(Object[] values, Converter converter) throws NullConversionException, FormatConversionException, IllegalArgumentException
{
if (values == null)
{
throw new IllegalArgumentException();
}
if (converter == null)
{
throw new IllegalArgumentException();
}
String[] strings = new String[values.length];
for (int i = 0;i < strings.length;i++)
{
Object value = values[i];
if (value != null)
{
strings[i] = converter.toString(values[i]);
}
}
return strings;
}
}