/ 
DBIx-SearchBuilder-1.82
River stage one • 3 direct dependents • 3 total dependents
/ DBIx::SearchBuilder::Handle::Oracle

NAME

DBIx::SearchBuilder::Handle::Oracle - An oracle specific Handle object

SYNOPSIS

DESCRIPTION

This module provides a subclass of DBIx::SearchBuilder::Handle that compensates for some of the idiosyncrasies of Oracle.

METHODS

Connect PARAMHASH: Driver, Database, Host, User, Password

Takes a paramhash and connects to your DBI datasource.

BuildDSN

Customized version of "BuildDSN" in DBIx::SearchBuilder::Handle method.

Takes additional argument SID. Database argument used unless SID provided. Two forms of DSN are generated depending on whether Host defined or not:

dbi:Oracle:sid=<SID>;host=...[;port=...]
dbi:Oracle:<SID>

Read details in documentation for DBD::Oracle module.

Insert

Takes a table name as the first argument and assumes that the rest of the arguments are an array of key-value pairs to be inserted.

InsertFromSelect

Customization of "InsertFromSelect" in DBIx::SearchBuilder::Handle.

Unlike other DBs Oracle needs:

  • id generated from sequences for every new record.

  • query wrapping in parens.

NOTE that on Oracle there is a limitation on the query. Every column in the result should have unique name or alias, for example the following query would generate "ORA-00918: column ambiguously defined" error:

SELECT g.id, u.id FROM ...

Solve with aliases:

SELECT g.id AS group_id, u.id AS user_id FROM ...

KnowsBLOBs

Returns 1 if the current database supports inserts of BLOBs automatically. Returns undef if the current database must be informed of BLOBs for inserts.

BLOBParams FIELD_NAME FIELD_TYPE

Returns a hash ref for the bind_param call to identify BLOB types used by the current database for a particular column type. The current Oracle implementation only supports ORA_CLOB types (112).

ApplyLimits STATEMENTREF ROWS_PER_PAGE FIRST_ROW

takes an SQL SELECT statement and massages it to return ROWS_PER_PAGE starting with FIRST_ROW;

DistinctQuery STATEMENTREF

takes an incomplete SQL SELECT statement and massages it to return a DISTINCT result set.

BinarySafeBLOBs

Return undef, as Oracle doesn't support binary-safe CLOBS

DatabaseVersion

Returns value of ORA_OCI constant, see "Constants" in DBI.

SimpleDateTimeFunctions

Returns hash reference with specific date time functions of this database for "DateTimeFunction" in DBIx::SearchBuilder::Handle.

ConvertTimezoneFunction

Custom implementation of "ConvertTimezoneFunction" in DBIx::SearchBuilder::Handle.

Use the following query to get list of timezones:

SELECT tzname FROM v$timezone_names;

Read Oracle's docs about timezone files:

http://download.oracle.com/docs/cd/B14117_01/server.101/b10749/ch4datetime.htm#i1006667