an extensible database with SQL and DBI

Row Directory Block Array interface

Row Directory Block Adjunct tied hash class. This class adds array-like splice capabilities to Genezzo::Block::RDBlock. Genezzo::Block::RDBArray uses this class as the basis of a tied array.

Row Directory Block Not Null (array) tied hash class.

Row Directory Block tied hash class. A class that lets you treat the contents of a block (byte buffer) as a hash.

row directory

Standard Block

Block Utility functions

A simple in-memory buffer cache for multiple files for a single process, without locking.

A simple in-memory buffer cache for a single process, without locking.

Buffer Cache Element

Detect modifications to scalar

detect destruction of scalar

The Genezzo data dictionary

an extensible database with SQL and DBI

Cry Havok! And Let Slip the Dogs of War!

some basic functions

debug functions

some example havok functions

some example havok functions

scalar SQL functions

load the SysHook table

load the UserExtend table

load the user_functions table

basic btree

persistent btree

btree Hash tied hash class. Makes a persistent btree based upon Genezzo::Block::RDBlock look like a conventional hash.

SQL parser

Parsing, Planning and Execution

Convert a SQL parse tree to relational algebra

Perform checks on relational algebra representation

Perform checks on relational algebra representation

a 90% pure virtual class module that extends hierarchical "push hash" Genezzo::PushHash::hph with Row/Block methods. These methods facilitate the construction of classes that manipulate data blocks directly, such as index access methods and functions that split rows over multiple blocks..

Push Hash Array implementation

fixed-size push hash

Push Hash that only supports delete and insert

an impure virtual class module that defines a "push hash", a hash that generates its own unique key for each value. Values are "pushed" into the hash, similar to pushing into an array.

an impure virtual class module that defines a *hierarchical* "push hash", a hash that generates its own unique key for each value. Values are "pushed" into the hash, similar to pushing into an array. Hierarchical pushhashes must be supplied with a factory method which manufactures additional pushhashes as necessary.

Genezzo Raw IO

Row Source Block

Row Source Dual (single row) table

Row Source Expression Evaluation

Row Source File tied hash class.

Row Source InDeX tied hash class. A hierarchical pushhash (see Genezzo::PushHash::hph) class that stores a pushhash as a btree via Genezzo::Row::RSTable.

Row Source Expression Evaluation

Row Source TABle tied hash class.

Extent Space Management

File Space Management

FreeBlock Space Management

Extent Space Management

Table Space Hash

a class that defines a tablespace, the relationship between a collection of files on disk and a set of tables in the dictionary.

Test SQL scripts

setup functions for testing

Utility functions

Execution and Expression Evaluation

Perform checks on relational algebra representation

perform DDL ALTER