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      1 /*
      2  * Licensed to the Apache Software Foundation (ASF) under one
      3  * or more contributor license agreements. See the NOTICE file
      4  * distributed with this work for additional information
      5  * regarding copyright ownership. The ASF licenses this file
      6  * to you under the Apache License, Version 2.0 (the  "License");
      7  * you may not use this file except in compliance with the License.
      8  * You may obtain a copy of the License at
      9  *
     10  *     http://www.apache.org/licenses/LICENSE-2.0
     11  *
     12  * Unless required by applicable law or agreed to in writing, software
     13  * distributed under the License is distributed on an "AS IS" BASIS,
     14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15  * See the License for the specific language governing permissions and
     16  * limitations under the License.
     17  */
     18 /*
     19  * $Id: NodeSortKey.java 468645 2006-10-28 06:57:24Z minchau $
     20  */
     21 package org.apache.xalan.transformer;
     22 
     23 import java.text.Collator;
     24 import java.util.Locale;
     25 
     26 import org.apache.xalan.res.XSLTErrorResources;
     27 import org.apache.xpath.XPath;
     28 
     29 /**
     30  * Data structure for use by the NodeSorter class.
     31  * @xsl.usage internal
     32  */
     33 class NodeSortKey
     34 {
     35 
     36   /** Select pattern for this sort key          */
     37   XPath m_selectPat;
     38 
     39   /** Flag indicating whether to treat thee result as a number     */
     40   boolean m_treatAsNumbers;
     41 
     42   /** Flag indicating whether to sort in descending order      */
     43   boolean m_descending;
     44 
     45   /** Flag indicating by case          */
     46   boolean m_caseOrderUpper;
     47 
     48   /** Collator instance          */
     49   Collator m_col;
     50 
     51   /** Locale we're in          */
     52   Locale m_locale;
     53 
     54   /** Prefix resolver to use          */
     55   org.apache.xml.utils.PrefixResolver m_namespaceContext;
     56 
     57   /** Transformer instance          */
     58   TransformerImpl m_processor;  // needed for error reporting.
     59 
     60   /**
     61    * Constructor NodeSortKey
     62    *
     63    *
     64    * @param transformer non null transformer instance
     65    * @param selectPat Select pattern for this key
     66    * @param treatAsNumbers Flag indicating whether the result will be a number
     67    * @param descending Flag indicating whether to sort in descending order
     68    * @param langValue Lang value to use to get locale
     69    * @param caseOrderUpper Flag indicating whether case is relevant
     70    * @param namespaceContext Prefix resolver
     71    *
     72    * @throws javax.xml.transform.TransformerException
     73    */
     74   NodeSortKey(
     75           TransformerImpl transformer, XPath selectPat, boolean treatAsNumbers,
     76           boolean descending, String langValue, boolean caseOrderUpper,
     77           org.apache.xml.utils.PrefixResolver namespaceContext)
     78             throws javax.xml.transform.TransformerException
     79   {
     80 
     81     m_processor = transformer;
     82     m_namespaceContext = namespaceContext;
     83     m_selectPat = selectPat;
     84     m_treatAsNumbers = treatAsNumbers;
     85     m_descending = descending;
     86     m_caseOrderUpper = caseOrderUpper;
     87 
     88     if (null != langValue && m_treatAsNumbers == false)
     89     {
     90       // See http://nagoya.apache.org/bugzilla/show_bug.cgi?id=2851
     91       // The constructor of Locale is defined as
     92       //   public Locale(String language, String country)
     93       // with
     94       //   language - lowercase two-letter ISO-639 code
     95       //   country - uppercase two-letter ISO-3166 code
     96       // a) language must be provided as a lower-case ISO-code
     97       //    instead of an upper-case code
     98       // b) country must be provided as an ISO-code
     99       //    instead of a full localized country name (e.g. "France")
    100       m_locale = new Locale(langValue.toLowerCase(),
    101                   Locale.getDefault().getCountry());
    102 
    103       // (old, before bug report 2851).
    104       //  m_locale = new Locale(langValue.toUpperCase(),
    105       //                        Locale.getDefault().getDisplayCountry());
    106 
    107       if (null == m_locale)
    108       {
    109 
    110         // m_processor.warn("Could not find locale for <sort xml:lang="+langValue);
    111         m_locale = Locale.getDefault();
    112       }
    113     }
    114     else
    115     {
    116       m_locale = Locale.getDefault();
    117     }
    118 
    119     m_col = Collator.getInstance(m_locale);
    120 
    121     if (null == m_col)
    122     {
    123       m_processor.getMsgMgr().warn(null, XSLTErrorResources.WG_CANNOT_FIND_COLLATOR,
    124                                    new Object[]{ langValue });  //"Could not find Collator for <sort xml:lang="+langValue);
    125 
    126       m_col = Collator.getInstance();
    127     }
    128   }
    129 }
    130