/* // $Id: //guest/julian_hyde/saffron/src/main/saffron/ext/LocaleMin.java#1 $ // Saffron preprocessor and data engine // Copyright (C) 2002 Julian Hyde <julian.hyde@mail.com> // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library 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 // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the // Free Software Foundation, Inc., 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. // // See the COPYING file located in the top-level-directory of // the archive of this library for complete text of license. */ package saffron.runtime; import saffron.AggregatorExtender; import java.text.Collator; import java.util.Locale; /** * <code>LocaleMin</code> is an example of a custom aggregator. It evaluates * the minimum of a set of values, according to a given locale. * * @author jhyde * @since 10 February, 2002 * @version $Id: //guest/julian_hyde/saffron/src/main/saffron/ext/LocaleMin.java#1 $ **/ public class LocaleMin implements AggregatorExtender { private Collator collator; public LocaleMin(Locale locale) { Collator collator = Collator.getInstance(locale); } private final String lesser(String s, String t) { if (s != null) { if (t == null || collator.compare(s, t) < 0) { return s; } } return t; } /** Creates an accumulator for aggregating <code>String</code>. **/ public Object start(String dummy) { return null; } /** Adds a <code>String</code> value into an accumulator, and returns the * result. **/ public Object next(String value, Object accumulator) { return lesser(value, (String) accumulator); } /** Combines two accumulators. **/ public Object merge(String dummy, Object accumulator0, Object accumulator1) { return lesser((String) accumulator0, (String) accumulator1); } /** Retrieves the result from an accumulator. **/ public String result(String dummy, Object accumulator) { return (String) accumulator; } } // End LocaleMin.java
# | Change | User | Description | Committed | |
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#2 | 1475 | Julian Hyde |
Saffron. Re-integrate Median, etc. |
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#1 | 1474 | Julian Hyde |
saffron: Aggregations are working. Renamed 'aggregator' to 'aggregation'. |
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//guest/julian_hyde/saffron/src/main/saffron/runtime/LocaleMin.java | |||||
#1 | 1467 | Julian Hyde |
saffron: First saffron check-in; incorporate my changes to openjava. |