votorola.a.count

Class CountTable

java.lang.Object

CountTable

@ThreadSafe
public final class CountTable
extends Object

The relational store of count nodes that (in part) backs a mounted count.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	CountTable.PollView A programmatic view of a count table restricted to a particular poll.

Field Summary

Fields

Modifier and Type	Field and Description
static String	BASE_CANDIDATE_TAIL A snippet of SQL "AND directVoterCount > 0 AND (isCycler OR NOT isCast)" that specifies a base candidate.
static String	DART_SECTORED_TAIL A snippet of SQL "AND dartSector != 0" that specifies a dart sectored node, suitable for appending to a WHERE clause.
static String	SCHEMA_NAME The name of the table's schema.

Constructor Summary

Constructors

Constructor and Description
CountTable(ReadyDirectory _readyDirectory, Database _database) Constructs a CountTable.

Method Summary

Methods

Modifier and Type	Method and Description
(package private) void	create() Creates this table in the database.
(package private) void	createIndices() Creates additional indices for this table.
(package private) Database	database() The database in which this table is stored.
(package private) boolean	drop() Drops this table from the database if it exists.
void	put(CountNodeW node) Stores a node.
ReadyDirectory	readyDirectory() The file-based counterpart to this table.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BASE_CANDIDATE_TAIL

public static final String BASE_CANDIDATE_TAIL

A snippet of SQL "AND directVoterCount > 0 AND (isCycler OR NOT isCast)" that specifies a base candidate. Appended to a WHERE clause, it limits the result set to the candidates sitting at the bottom of their respective cascades, where they sit either because they are not voting or because they are voting in cycles.

See Also:

theory.xht#base-candidate, Constant Field Values

DART_SECTORED_TAIL

public static final String DART_SECTORED_TAIL

A snippet of SQL "AND dartSector != 0" that specifies a dart sectored node, suitable for appending to a WHERE clause.

See Also:

Constant Field Values

SCHEMA_NAME

public static final String SCHEMA_NAME

The name of the table's schema.

See Also:

Constant Field Values

Constructor Detail

CountTable

CountTable(ReadyDirectory _readyDirectory,
          Database _database)
     throws IOException,
            SQLException

Constructs a CountTable.

Throws:

IOException

SQLException

See Also:

readyDirectory(), database()

Method Detail

create

final void create()
           throws SQLException

Creates this table in the database.

Throws:

SQLException

createIndices

final void createIndices()
                  throws SQLException

Creates additional indices for this table. Some queries are expected to be much faster afterwards. On the other hand, all updates will be slightly slower.

Throws:

SQLException

database

@Warning(value="thread restricted object")
final Database database()

The database in which this table is stored.

drop

final boolean drop()
            throws SQLException

Drops this table from the database if it exists.

Returns:

true if any rows were actually removed as a result, false otherwise.

Throws:

SQLException

put

public final void put(CountNodeW node)
               throws SQLException

Stores a node.

Throws:

SQLException

readyDirectory

public final ReadyDirectory readyDirectory()

The file-based counterpart to this table.