org.objectweb.cjdbc.sql
Class ParsingGranularities

java.lang.Object
  org.objectweb.cjdbc.sql.ParsingGranularities

public class ParsingGranularities

extends java.lang.Object

Defines SQL queries parsing granularities.

Version:

1.0

Author:

Emmanuel Cecchet, Sara Bouchenak

Field Summary

static int	COLUMN Column granularity.
static int	COLUMN_UNIQUE Column granularity with UNIQUE queries.
static int	COLUMN_UNIQUE_DELETE Column granularity with UNIQUE queries and UNIQUE_DELETE optimization.
static int	COLUMN_UNIQUE_UPDATE Column granularity with UNIQUE queries and UNIQUE_UPDATE.
static int	NO_PARSING The request is not parsed.
static int	TABLE Table granularity.

Constructor Summary

ParsingGranularities()

Method Summary

static java.lang.String

getInformation(int granularity) Returns the granularity value in a String form.

Methods inherited from class java.lang.Object

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

Field Detail

NO_PARSING

public static final int NO_PARSING

The request is not parsed.

See Also:

Constant Field Values

TABLE

public static final int TABLE

Table granularity. Only table dependencies are computed.

See Also:

Constant Field Values

COLUMN

public static final int COLUMN

Column granularity. Column dependencies are computed (both select and where clauses).

See Also:

Constant Field Values

COLUMN_UNIQUE

public static final int COLUMN_UNIQUE

Column granularity with UNIQUE queries.

Same as COLUMN except that UNIQUE queries that select a single row based on a key are flagged UNIQUE (and should not be invalidated on INSERTs).

See Also:

Constant Field Values

COLUMN_UNIQUE_UPDATE

public static final int COLUMN_UNIQUE_UPDATE

Column granularity with UNIQUE queries and UNIQUE_UPDATE.

Same as COLUMN_UNIQUE except that update statements that affect a UNIQUE row are flagged UNIQUE.

See Also:

Constant Field Values

COLUMN_UNIQUE_DELETE

public static final int COLUMN_UNIQUE_DELETE

Column granularity with UNIQUE queries and UNIQUE_DELETE optimization.

Here, in case of a DELETE request:

• The DELETE request is based on one or more primary keys of a table. It therefore operates on a single row of the table.
• All the SELECT queries on that table are:
  • UNIQUE queries,
  • based at least on one of the primary keys used in the DELETE requests applied on that table.

Same as COLUMN_UNIQUE except that a DELETE only invalidates queries that result in the same single row as the DELETE.

See Also:

Constant Field Values

Constructor Detail

ParsingGranularities

public ParsingGranularities()

Method Detail

getInformation

public static java.lang.String getInformation(int granularity)

Returns the granularity value in a String form.

Parameters:

granularity - a granularity value

Returns:

the String form of the granularity