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Quadcept : About Library Cache

Library Cache

Library Cache is a collection of library caches stored in a project. It is automatically stored into a project file when placing or updating libraries. Since the objects in a Library cache are referred to prior to the master libraries in a database (*.qdb) when placing or updating objects, and are freely editable, you can build independent libraries without being affected by external libraries.

The number of objects cached in a project is viewable on Project Window. This window also allows you to open a cache dialog, and you can perform various operations for the Library caches in the dialog.

Library Cache

Project Cache can be toggled between ON and OFF at Database Settings in Environment Settings. For details, please see Database Settings.

Objects Subject to Caching

The objects to be cached are as follows:

・Component
・Symbol
・Footprint
・IPC Footprint

Timing of Caching

Each object is cached at the following timings.

・When an object subject to caching is placed / updated / replaced
・When a design document is copied and pasted

A cache is not be overwritten if it already exists in a project. * Except for Update Components (Updating libraries based on "Database" in performing Update Components will also update the objects in the Library Cache.)

If an object exists in multiple locations (local-db/master-db/Library Cache), the object to be cached will be determined based on Reference Priority.

Opening Cache Dialog

A cache dialog allows you to perform various operations for the Library Caches. The dialog can be opened by the following steps.

Opening Cache Dialog
The following explains how to open a cache dialog.
(1) Open a project.
* For how to open a project, please see Opening Project.
(2) Open any design document.
* For how to open a design document, please see Opening Design Drawings.
(3) Right-click on Library Cache and then click Open Library Cache.
* If Library Cache is not displayed in a project, data caching may be disabled. Please check Database Settings in Environment Settings in that case.
A cache dialog will be opened.

 
Cache Dialog Description

  Item Description
(1)

Filter

Allows you to narrow down the objects displayed in Object List. The following items can be selected as a filter.

・All
・Component
・Symbol
・Footprint
・IPC Footprint
(2)

Search

Allows you to do a search through objects in a Library Cache. For details on how to do a search, please see Component Search.
(3)

Object List

Shows a list of objects existing in a Library Cache. The items displayed in the list are editable from "(Display Item Settings)". The following items are shown by default.

・In Use           ：Shows whether an object is currently in use.
　　　　　　　　　：In use　：Not used
・Name            ：Shows an object name.
・Updated Date ：Shows the date when an object was last updated.
・Updated By    ：Shows the user who last updated an object.
・Created Date  ：Shows the date when an object was created.
・Created By     ：Shows the user who created an object.
・Revision         ：Shows the number of edits to an object.
・ID                  ：Shows an object ID.
(4)

Preview

Shows the preview of a selected object.
(5)

Menu

Allows you to perform various operations for a Library Cache.
For details, please see Cache Dialog Menu Description.
(6)

Update

Update the display of an object list.
* This just refreshes the display of the list and will not update library caches themselves. If you wish to update the caches, please perform Update Cache.
(7)

Close

Close a cache dialog.

 

Cache Dialog Menu Description

Menu Description

Update Cache

Updates the objects in a Library Cache to the state of the master libraries in a database.
For details, please see Update Cache.

Delete Unused Caches

Deletes all caches which are not used in a project.
For details, please see Delete Unused Caches.

Extract Objects from Cache

Extracts objects from a Library Cache to a database or a Quadcept file.
For details, please see Extract Objects from Cache.

Extract Objects to Cache

Extracts objects used in a project to a Library Cache.
For details, please see Extract Objects to Cache.

Output List

Outputs a list of objects in a Library Cache.
For details, please see Output List.

 

Cache Dialog Right-Click Menu Description

Menu Description

Place

Places a selected object onto a currently active design sheet. The object can also be placed by a double-click. Libraries cannot be placed if you are selecting an unsupported object in the active design sheet or choosing multiple items.

Edit

Opens an edit sheet for a selected object. All the objects in a Library Cache are editable. Since this allows you to change the figures / attributes of libraries without affecting the master objects in a Quadcept database, you can build independent libraries for the project.

Copy

Copies a selected object.

Paste

Pastes a copied object.

Rename

Allows you to rename a selected object.

Update Cache

Updates a selected object to the state of the master library in a database.
For details, please see Update Cache.

Extract Objects from Cache

Extracts a selected object from a Library Cache to a database or a Quadcept file.
For details, please see Extract Objects from Cache.