Examples of org.hsqldb.lib.HashSet

org.hsqldb.lib.HashSet
This class does not store null keys. @author Fred Toussi (fredt@users dot sourceforge.net) @version 1.9.0 @since 1.7.2

        // Hmm, looking at the documentation of Locale.getAvailableLocales, I'm not sure
        // whether it is really feasible. The doc states "returns a list of all installed Locales".
        // The "installed" puzzles me - maybe this is really different per installation, and not only
        // per JDK version?
        Locale[] availableLocales = Locale.getAvailableLocales();
        Set      existenceCheck   = new HashSet();


        for (int i = 0; i < availableLocales.length; ++i) {
            String availaleName = availableLocales[i].getLanguage();


            if (availableLocales[i].getCountry().length() > 0) {
                availaleName += "-" + availableLocales[i].getCountry();
            }


            existenceCheck.add(availaleName);
        }


        String notInstalled = "";
        int    expected     = 0,
               failed       = 0;


        while (localeIterator.hasNext()) {
            String localeName = (String) localeIterator.next();


            ++expected;


            if (!existenceCheck.contains(localeName)) {
                if (notInstalled.length() > 0) {
                    notInstalled += "; ";
                }


                notInstalled += localeName;

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        this.returnType = returnType;


        if (isDistinct) {
            this.isDistinct = true;
            this.arrayType  = arrayType;
            distinctValues  = new HashSet();


            if (type.isRowType() || type.isArrayType()) {
                TypedComparator comparator = Type.newComparator(session);
                SortAndSlice    sort       = new SortAndSlice();
                int length = type.isRowType()

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                    for (int i = 0; i < rangeVariables.length; i++) {
                        RangeVariable range =
                            rangeVariables[i].getRangeForTableName(tablename);


                        if (range != null) {
                            HashSet exclude = getAllNamedJoinColumns();


                            rangeVariables[i].addTableColumns(range, e,
                                                              exclude);


                            resolved = true;

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        return expression;
    }


    private HashSet getAllNamedJoinColumns() {


        HashSet set = null;


        for (int i = 0; i < rangeVariableList.size(); i++) {
            RangeVariable range = (RangeVariable) rangeVariableList.get(i);


            if (range.namedJoinColumns != null) {
                if (set == null) {
                    set = new HashSet();
                }


                set.addAll(range.namedJoinColumns);
            }
        }


        return set;
    }

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    }


    public Expression getEquiJoinExpressions(OrderedHashSet nameSet,
            RangeVariable rightRange, boolean fullList) {


        HashSet        set             = new HashSet();
        Expression     result          = null;
        OrderedHashSet joinColumnNames = new OrderedHashSet();


        for (int i = 0; i < rangeVariableList.size(); i++) {
            RangeVariable  range = (RangeVariable) rangeVariableList.get(i);
            HashMappedList columnList = range.rangeTable.columnList;


            for (int j = 0; j < columnList.size(); j++) {
                ColumnSchema column       = (ColumnSchema) columnList.get(j);
                String       name         = range.getColumnAlias(j).name;
                boolean      columnInList = nameSet.contains(name);
                boolean namedJoin = range.namedJoinColumns != null
                                    && range.namedJoinColumns.contains(name);
                boolean repeated = !namedJoin && !set.add(name);


                if (repeated && (!fullList || columnInList)) {
                    throw Error.error(ErrorCode.X_42578, name);
                }

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     * For cascade operations
     */
    public HashSet getConstraintPath() {


        if (constraintPath == null) {
            constraintPath = new HashSet();
        } else {
            constraintPath.clear();
        }


        return constraintPath;

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        final int ifree_pos        = 6;


        //
        DataFileCache cache = null;
        Object[]      row;
        HashSet       cacheSet;
        Iterator      caches;
        Iterator      tables;
        Table         table;


        // Initialization
        cacheSet = new HashSet();


        // dynamic system tables are never cached
        tables =
            database.schemaManager.databaseObjectIterator(SchemaObject.TABLE);


        while (tables.hasNext()) {
            table = (Table) tables.next();


            PersistentStore currentStore = table.getRowStore(session);


            if (session.getGrantee().isFullyAccessibleByRole(
                    table.getName())) {
                if (currentStore != null) {
                    cache = currentStore.getCache();
                }


                if (cache != null) {
                    cacheSet.add(cache);
                }
            }
        }


        caches = cacheSet.iterator();


        // Do it.
        while (caches.hasNext()) {
            cache = (DataFileCache) caches.next();
            row   = t.getEmptyRowData();

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     */
    protected void init(int protocol) {


        // PRE:  This method is only called from the constructor
        serverState      = ServerConstants.SERVER_STATE_SHUTDOWN;
        serverConnSet    = new HashSet();
        serverId         = toString();
        serverId         = serverId.substring(serverId.lastIndexOf('.') + 1);
        serverProtocol   = protocol;
        serverProperties = ServerConfiguration.newDefaultProperties(protocol);
        logWriter        = new PrintWriter(System.out);

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        }
    }


    public Set getUserDefinedPropertyData() {


        Set      set = new HashSet();
        Iterator it  = dbMeta.values().iterator();


        while (it.hasNext()) {
            Object[] row = (Object[]) it.next();


            if (((Integer) row[HsqlProperties.indexType]).intValue()
                    == SQL_PROPERTY) {
                set.add(row);
            }
        }


        return set;
    }

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     */
    public static String[] listLocalInetAddressNames() {


        InetAddress   addr;
        InetAddress[] addrs;
        HashSet       set;


        set = new HashSet();


        try {
            addr  = InetAddress.getLocalHost();
            addrs = InetAddress.getAllByName(addr.getHostAddress());


            for (int i = 0; i < addrs.length; i++) {
                set.add(addrs[i].getHostAddress());
                set.add(addrs[i].getHostName());
            }


            addrs = InetAddress.getAllByName(addr.getHostName());


            for (int i = 0; i < addrs.length; i++) {
                set.add(addrs[i].getHostAddress());
                set.add(addrs[i].getHostName());
            }
        } catch (Exception e) {}


        try {
            addr  = InetAddress.getByName(null);
            addrs = InetAddress.getAllByName(addr.getHostAddress());


            for (int i = 0; i < addrs.length; i++) {
                set.add(addrs[i].getHostAddress());
                set.add(addrs[i].getHostName());
            }


            addrs = InetAddress.getAllByName(addr.getHostName());


            for (int i = 0; i < addrs.length; i++) {
                set.add(addrs[i].getHostAddress());
                set.add(addrs[i].getHostName());
            }
        } catch (Exception e) {}


        try {
            set.add(InetAddress.getByName("loopback").getHostAddress());
            set.add(InetAddress.getByName("loopback").getHostName());
        } catch (Exception e) {}


        String[] array = new String[set.size()];


        set.toArray(array);


        return array;
    }

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