HP Embedded Capture Device License 1-100 E-LTU Manuel d'utilisateur télécharger pdf (Page 21)

macros. A Process node does not require user interaction, and once its execution on the device has

completed, the workflow will continue evaluation of the following nodes as usual.

1.4.3.6 Scan process

The Scan is a special process that captures a document(s) on the device scanner.

At this node level, Scan parameters such as File Type, Media Source, Color Mode, etc., are defined. These

settings can be defined by the administrator during workflow creation, and cannot be modified while

executing the workflow on a device unless the administrator also creates a Scan options screen (see next

point).

1.4.3.7 Scan options screen

This node defines scan settings that the administrator makes editable by the end-user during workflow

execution in a device. The administrator can set all Scan settings as Scan options, defined as “editable” or

“read only” (only for information purposes).

1.4.4 Cycle

A Cycle is defined as the situation where workflow navigation arrives to a node that was already visited.

These situations produce the session to also save Cycle information as metadata. This makes it is easy to

retrieve the results of accumulated cycles, or just the last/current cycle, when preparing metadata files or

summary screens by macros.

1.4.4.1 Cycle on static workflows; unique cycle and session

In a static workflow, a cycle is built by a redirection on the graph (adjacency) to an existing node that the

workflow may have already passed. Since the workflow is static, the cycle can be repeated as many times as

necessary, and the graph structure will be kept forever.

1.4.5 Data validation

HP Embedded Capture includes mechanisms through regular expressions to validate data content structure

while a user is introducing metadata in custom prompts. This validation occurs at the control panel, helping

the administrator ensure content is valid in terms of length and structure before continuing a workflow.

1.4.5.1 Regular expressions

A Regular expression, often called a pattern, specifies a set of strings. To specify such sets of strings, rules

are often more concise than lists of a set's members. For example, the set containing the three strings

"Handel", "Händel", and "Haendel" can be specified by the pattern H(ä|ae?)ndel (or alternatively, it is said

that the pattern matches each of the three strings).

There is much information about regular expressions available online. As a reference, the following link is a

good starting point:

Regular Expressions

Examples:

Email address validation

^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$

IP address validation

\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b

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HP Embedded Capture Device License 1-100 E-LTU Manuel d'utilisateur Page 21