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/** |
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$Id$ |
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Copyright (C) 2013 Nicklas Nordborg |
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This file is part of BASE - BioArray Software Environment. |
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Available at http://base.thep.lu.se/ |
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BASE is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 3 |
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of the License, or (at your option) any later version. |
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BASE is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with BASE. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package net.sf.basedb.util.formatter; |
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|
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/** |
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Formatter implementation that converts an enum constant |
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into it's name() as the formatted value. |
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@author Nicklas |
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@since 3.8 |
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*/ |
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public class EnumFormatter<T extends Enum<T>> |
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implements Formatter<Enum<T>> |
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{ |
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private final Class<T> enumClass; |
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private String nullValue = ""; |
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|
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/** |
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Create a new formatter. Null values are formatted as an empty string. |
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@param enumClass Only required if using the parseString method |
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*/ |
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public EnumFormatter(Class<T> enumClass) |
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{ |
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this.enumClass = enumClass; |
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} |
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|
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/** |
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Create a new formatter. |
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@param enumClass Only required if using the parseString method |
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@param nullValue The string to return if a null item is |
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passed to {@link #format(Enum)} |
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*/ |
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public EnumFormatter(Class<T> enumClass, String nullValue) |
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{ |
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this.enumClass = enumClass; |
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this.nullValue = nullValue; |
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} |
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|
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/* |
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From the Formatter interface |
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------------------------------------------- |
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*/ |
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@Override |
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public String format(Enum<T> value) |
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{ |
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return value == null ? nullValue : value.name(); |
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} |
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|
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@Override |
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public Enum<T> parseString(String value) |
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{ |
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try |
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{ |
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return Enum.valueOf(enumClass, value); |
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} |
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catch (Exception ex) |
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{} |
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return null; |
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} |
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// ------------------------------------------- |
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} |