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.\" ========================================================================
.\"
.IX Title "Padre::Cache 3pm"
.TH Padre::Cache 3pm "2012-06-27" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Padre::Cache \- The Padre Temporary Data Cache API
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBPadre::Cache\fR implements a light memory only caching mechanism which is
designed to support \s-1GUI\s0 objects that need to temporarily store state data.
.PP
By providing this caching in a neutral location that is not directly bound
to the user interface objects, the cached data can survive destruction and
recreation of those interface objects.
.PP
This is particularly valuable for situations such as a shift in the active
language or the relocation of a tool that would result in interface objects
being rebuilt.
.PP
Cache data is stored in a \*(L"Stash\*(R", which is a \f(CW\*(C`HASH\*(C'\fR reference containing
arbitrary content, and is keyed off a project or document.
.SH "METHODS"
.IX Header "METHODS"
.SS "stash"
.IX Subsection "stash"
.Vb 1
\&  my $stash = Padre::Cache\->stash( \*(AqPadre::Wx::MyClass\*(Aq => $project );
.Ve
.PP
The \f(CW\*(C`stash\*(C'\fR method fetches the \f(CW\*(C`HASH\*(C'\fR reference stash for a particular key
pair, which consists of a \s-1GUI\s0 class name and a project or document.
.PP
The \f(CW\*(C`HASH\*(C'\fR reference returned can be used directly withouth the need to do
any kind of \f(CW\*(C`get\*(C'\fR or \f(CW\*(C`set\*(C'\fR call to the stash.
.PP
Calling \f(CW\*(C`stash\*(C'\fR multiple times is guarenteed to fetch the same \f(CW\*(C`HASH\*(C'\fR
reference.
.SS "release"
.IX Subsection "release"
.Vb 1
\&    Padre::Cache\->release( $project\->root );
.Ve
.PP
The \f(CW\*(C`release\*(C'\fR method is used to flush all of the stash data related to a
particular project root or file name for all of the \s-1GUI\s0 elements that make
use of stash objects from Padre::Cache.
.PP
Although this method is available for use, it should generally not be called
directly. The built in \f(CW\*(C`DESTROY\*(C'\fR for both project and document objects will
call this method for you, automatically cleaning up the stash data when the
project or document itself is destroyed.
.SH "COPYRIGHT & LICENSE"
.IX Header "COPYRIGHT & LICENSE"
Copyright 2008\-2012 The Padre development team as listed in Padre.pm.
.PP
This program is free software; you can redistribute
it and/or modify it under the same terms as Perl 5 itself.
.PP
The full text of the license can be found in the
\&\s-1LICENSE\s0 file included with this module.