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