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alzabo::runtime::uniquerowcache(3pm) [debian man page]

Alzabo::Runtime::UniqueRowCache(3pm)			User Contributed Perl Documentation		      Alzabo::Runtime::UniqueRowCache(3pm)

NAME
Alzabo::Runtime::UniqueRowCache - Implements a row cache for Alzabo SYNOPSIS
use Alzabo::Runtime::UniqueRowCache; Alzabo::Runtime::UniqueRowCache->clear(); DESCRIPTION
This is a very simple caching mechanism for "Alzabo::Runtime::Row" objects that tries to ensure that for there is never more than one row object in memory for a given database row. To use it, simply load it. It can be foiled through the use of "Storable" or other "deep magic" cloning code, like in the "Clone" module. The cache is a simple hash kept in memory. If you use this module, you are responsible for clearing the cache as needed. The only time it is cleared automatically is when a table update or delete is performed, in which case all cached rows for that table are cleared. In a persistent environment like mod_perl, you should clear the cache on a regular basis in order to prevent the cache from getting out of sync with the database. A good way to do this is to clear it at the start of every request. METHODS
All methods provided are class methods. * clear This clears the entire cache * clear_table( $table_object ) Given a table object, this method clears all the cached rows from that table. * row_in_cache( $table_name, $row_id ) Given a table name and a row id, as returned by the "Alzabo::Runtime::Row->id_as_string" method, this method returns the matching row from the cache, if it exists. Otherwise it returns undef. * delete_from_cache( $table_name, $row_id ) Given a table name and a row id, as returned by the "Alzabo::Runtime::Row->id_as_string" method, this method returns the matching row from the cache. * write_to_cache( $row_object ) Given a row object, this method stores it in the cache. AVOIDING THE CACHE
If you want to not cache a row, then you can pass the "no_cache" parameter to any table or schema method that creates a new row object or a cursor, such as "Alzabo::Runtime::Table->insert()", "Alzabo::Runtime::Table->rows_where()". AUTHOR
Dave Rolsky, <autarch@urth.org> perl v5.8.8 2007-12-23 Alzabo::Runtime::UniqueRowCache(3pm)

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Alzabo::Runtime::InsertHandle(3pm)			User Contributed Perl Documentation			Alzabo::Runtime::InsertHandle(3pm)

NAME
Alzabo::Runtime::InsertHandle - A handle representing an insert SYNOPSIS
my $handle = $table->insert_handle ( columns => [ $table->columns( 'name', 'job' ) ] ); my $faye_row = $handle->insert( values => { name => 'Faye', job => 'HK Pop Chanteuse' } ); my $guesch_row = $handle->insert( values => { name => 'Guesch', job => 'French Chanteuse and Dancer' } ); DESCRIPTION
This object is analogous to a DBI statement handle, and can be used to insert multiple rows into a table more efficiently than repeatedly calling "Alzabo::Runtime::Table->insert()". METHODS
Objects of this class provide one public method: insert This method is used to insert a new row into a table. It accepts the following parameters: * values This should be a hash reference containing the values to be inserted into the table. If no value is given for a primary key column and the column is "sequenced" then the primary key will be auto-generated. If values are not provided for other columns which were given when "Alzabo::Runtime::Table->insert_handle" was called, this method first checks to see if a value was provided for the column when "Alzabo::Runtime::Table->insert_handle" was called. If none was pro- vided, then the column's default value is used. If column values were passed to "Alzabo::Runtime::Table->insert_handle", then these can be overridden by values passed to this method. It is not possible to override column values that were given as SQL functions when "Alzabo::Runtime::Table->insert_handle" was called. This method returns a new "Alzabo::Runtime::Row" object. Throws: "Alzabo::Exception::Logic", "Alzabo::Exception::Params" perl v5.8.8 2007-12-23 Alzabo::Runtime::InsertHandle(3pm)
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