/* Copyright (c) 2001-2009, The HSQL Development Group
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package org.hsqldb;
import java.text.Collator;
import java.util.Locale;
import org.hsqldb.HsqlNameManager.HsqlName;
import org.hsqldb.lib.HashMap;
import org.hsqldb.lib.StringUtil;
import org.hsqldb.lib.java.JavaSystem;
import org.hsqldb.rights.Grantee;
import org.hsqldb.lib.OrderedHashSet;
/**
* Implementation of collation support for CHAR and VARCHAR data.
*
* @author Frand Schoenheit frank.schoenheit@sun.com
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 1.8.0
* @since 1.8.0
*/
public class Collation implements SchemaObject {
public static final HashMap nameToJavaName = new HashMap(101);
static {
nameToJavaName.put("Afrikaans", "af-ZA");
nameToJavaName.put("Amharic", "am-ET");
nameToJavaName.put("Arabic", "ar");
nameToJavaName.put("Assamese", "as-IN");
nameToJavaName.put("Azerbaijani_Latin", "az-AZ");
nameToJavaName.put("Azerbaijani_Cyrillic", "az-cyrillic");
nameToJavaName.put("Belarusian", "be-BY");
nameToJavaName.put("Bulgarian", "bg-BG");
nameToJavaName.put("Bengali", "bn-IN");
nameToJavaName.put("Tibetan", "bo-CN");
nameToJavaName.put("Bosnian", "bs-BA");
nameToJavaName.put("Catalan", "ca-ES");
nameToJavaName.put("Czech", "cs-CZ");
nameToJavaName.put("Welsh", "cy-GB");
nameToJavaName.put("Danish", "da-DK");
nameToJavaName.put("German", "de-DE");
nameToJavaName.put("Greek", "el-GR");
nameToJavaName.put("Latin1_General", "en-US");
nameToJavaName.put("English", "en-US");
nameToJavaName.put("Spanish", "es-ES");
nameToJavaName.put("Estonian", "et-EE");
nameToJavaName.put("Basque", "eu");
nameToJavaName.put("Finnish", "fi-FI");
nameToJavaName.put("French", "fr-FR");
nameToJavaName.put("Guarani", "gn-PY");
nameToJavaName.put("Gujarati", "gu-IN");
nameToJavaName.put("Hausa", "ha-NG");
nameToJavaName.put("Hebrew", "he-IL");
nameToJavaName.put("Hindi", "hi-IN");
nameToJavaName.put("Croatian", "hr-HR");
nameToJavaName.put("Hungarian", "hu-HU");
nameToJavaName.put("Armenian", "hy-AM");
nameToJavaName.put("Indonesian", "id-ID");
nameToJavaName.put("Igbo", "ig-NG");
nameToJavaName.put("Icelandic", "is-IS");
nameToJavaName.put("Italian", "it-IT");
nameToJavaName.put("Inuktitut", "iu-CA");
nameToJavaName.put("Japanese", "ja-JP");
nameToJavaName.put("Georgian", "ka-GE");
nameToJavaName.put("Kazakh", "kk-KZ");
nameToJavaName.put("Khmer", "km-KH");
nameToJavaName.put("Kannada", "kn-IN");
nameToJavaName.put("Korean", "ko-KR");
nameToJavaName.put("Konkani", "kok-IN");
nameToJavaName.put("Kashmiri", "ks");
nameToJavaName.put("Kirghiz", "ky-KG");
nameToJavaName.put("Lao", "lo-LA");
nameToJavaName.put("Lithuanian", "lt-LT");
nameToJavaName.put("Latvian", "lv-LV");
nameToJavaName.put("Maori", "mi-NZ");
nameToJavaName.put("Macedonian", "mk-MK");
nameToJavaName.put("Malayalam", "ml-IN");
nameToJavaName.put("Mongolian", "mn-MN");
nameToJavaName.put("Manipuri", "mni-IN");
nameToJavaName.put("Marathi", "mr-IN");
nameToJavaName.put("Malay", "ms-MY");
nameToJavaName.put("Maltese", "mt-MT");
nameToJavaName.put("Burmese", "my-MM");
nameToJavaName.put("Danish_Norwegian", "nb-NO");
nameToJavaName.put("Nepali", "ne-NP");
nameToJavaName.put("Dutch", "nl-NL");
nameToJavaName.put("Norwegian", "nn-NO");
nameToJavaName.put("Oriya", "or-IN");
nameToJavaName.put("Punjabi", "pa-IN");
nameToJavaName.put("Polish", "pl-PL");
nameToJavaName.put("Pashto", "ps-AF");
nameToJavaName.put("Portuguese", "pt-PT");
nameToJavaName.put("Romanian", "ro-RO");
nameToJavaName.put("Russian", "ru-RU");
nameToJavaName.put("Sanskrit", "sa-IN");
nameToJavaName.put("Sindhi", "sd-IN");
nameToJavaName.put("Slovak", "sk-SK");
nameToJavaName.put("Slovenian", "sl-SI");
nameToJavaName.put("Somali", "so-SO");
nameToJavaName.put("Albanian", "sq-AL");
nameToJavaName.put("Serbian_Cyrillic", "sr-YU");
nameToJavaName.put("Serbian_Latin", "sh-BA");
nameToJavaName.put("Swedish", "sv-SE");
nameToJavaName.put("Swahili", "sw-KE");
nameToJavaName.put("Tamil", "ta-IN");
nameToJavaName.put("Telugu", "te-IN");
nameToJavaName.put("Tajik", "tg-TJ");
nameToJavaName.put("Thai", "th-TH");
nameToJavaName.put("Turkmen", "tk-TM");
nameToJavaName.put("Tswana", "tn-BW");
nameToJavaName.put("Turkish", "tr-TR");
nameToJavaName.put("Tatar", "tt-RU");
nameToJavaName.put("Ukrainian", "uk-UA");
nameToJavaName.put("Urdu", "ur-PK");
nameToJavaName.put("Uzbek_Latin", "uz-UZ");
nameToJavaName.put("Venda", "ven-ZA");
nameToJavaName.put("Vietnamese", "vi-VN");
nameToJavaName.put("Yoruba", "yo-NG");
nameToJavaName.put("Chinese", "zh-CN");
nameToJavaName.put("Zulu", "zu-ZA");
}
final static Collation defaultCollation = new Collation();
final HsqlName name;
Collator collator;
Locale locale;
boolean equalIsIdentical = true;
public Collation() {
locale = Locale.ENGLISH;
String language = locale.getDisplayLanguage(Locale.ENGLISH);
name = HsqlNameManager.newInfoSchemaObjectName(language, true,
SchemaObject.COLLATION);
}
public HsqlName getName() {
return name;
}
public static Collation getDefaultInstance() {
return defaultCollation;
}
public static org.hsqldb.lib.Iterator getCollationsIterator() {
return nameToJavaName.keySet().iterator();
}
public static org.hsqldb.lib.Iterator getLocalesIterator() {
return nameToJavaName.values().iterator();
}
public void setCollationAsLocale() {
Locale locale = Locale.getDefault();
String language = locale.getDisplayLanguage(Locale.ENGLISH);
try {
setCollation(language);
} catch (HsqlException e) {}
}
void setCollation(String newName) {
String jname = (String) Collation.nameToJavaName.get(newName);
if (jname == null) {
throw Error.error(ErrorCode.X_42501, jname);
}
name.rename(newName, true);
String[] parts = StringUtil.split(jname, "-");
String language = parts[0];
String country = parts.length == 2 ? parts[1]
: "";
locale = new Locale(language, country);
collator = Collator.getInstance(locale);
equalIsIdentical = false;
}
/**
* Returns true if two equal strings always contain identical sequence of
* characters for the current collation, e.g. English language.
*/
public boolean isEqualAlwaysIdentical() {
return false;
}
/**
* returns -1, 0 or +1
*/
public int compare(String a, String b) {
int i;
if (collator == null) {
i = a.compareTo(b);
} else {
i = collator.compare(a, b);
}
return (i == 0) ? 0
: (i < 0 ? -1
: 1);
}
public int compareIgnoreCase(String a, String b) {
int i;
if (collator == null) {
i = JavaSystem.CompareIngnoreCase(a, b);
} else {
i = collator.compare(toUpperCase(a), toUpperCase(b));
}
return (i == 0) ? 0
: (i < 0 ? -1
: 1);
}
public String toUpperCase(String s) {
return s.toUpperCase(locale);
}
public String toLowerCase(String s) {
return s.toLowerCase(locale);
}
public int getType() {
return SchemaObject.COLLATION;
}
public HsqlName getSchemaName() {
return SqlInvariants.INFORMATION_SCHEMA_HSQLNAME;
}
public HsqlName getCatalogName() {
return null;
}
public Grantee getOwner() {
return null;
}
public OrderedHashSet getReferences() {
return new OrderedHashSet();
}
public OrderedHashSet getComponents() {
return null;
}
public void compile(Session session) {}
public String getSQL() {
return "";
}
}