Package com.day.cq.dam.core.process

Class CreateThumbnailProcess

java.lang.Object

com.day.cq.dam.commons.process.AbstractAssetWorkflowProcess

com.day.cq.dam.core.process.CreateThumbnailProcess

All Implemented Interfaces:

WorkflowProcess

@Service
@Property(name="process.label",
          value="Create Thumbnail")
public class CreateThumbnailProcess
extends AbstractAssetWorkflowProcess

The CreateThumbnailProcess is called in a Workflow process step. This process will create one or more Thumbnails for the Asset to be procesed. The Thumbnail generation is delegated to the appropriate AssetHandler. The thumbails Dimensions are given as the Workflow Process arguments
Each argument is considered as one thumbnail configuration. The configuration has to be enclosed in squared brackets ([]) The configuration consists of a number for the width, the height in pixel and an optional flag that indicates if the image should be centered.
These values are seperated by a colon character (:).
Dimension:
The thumbnail from an image will be created by resizeing according the thumbnail configuration. The ascpect ratio is respected and the image will have at most the dimension given by the configuration.
Centering:
If the center flag is set to true, the thumbnail image will have exactly the size given by the configuraiton. If the resized image is smaller it will be centered within the thumbnail.

Example with the following Workflow step arguments:

    [70:70],
    [80:100:true]
 

The Process creates two PNG images one of the size of 70x70 pixel and one 80x100 where the result is centred

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CreateThumbnailProcess.Arguments	The available arguments to this process implementation.
static class	CreateThumbnailProcess.Config	The parsed configuration for this wf process

Field Summary

Fields inherited from class com.day.cq.dam.commons.process.AbstractAssetWorkflowProcess

TYPE_JCR_PATH

Constructor Summary

Constructors

Constructor	Description
CreateThumbnailProcess()

Method Summary

Modifier and Type	Method	Description
static RenditionTemplate[]	createRenditionTemplates(Asset asset, ThumbnailConfig[] thumbnails, RenditionMaker renditionMaker)
void	createThumbnails(Asset asset, CreateThumbnailProcess.Config config, RenditionMaker renditionMaker)
void	execute(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap metaData)	Executes a new Java process with the given WorkItem and WorkflowSession.
CreateThumbnailProcess.Config	parseConfig(MetaDataMap metaData)
static ThumbnailConfig	parseThumbnailArguments(java.lang.String arg)
static ThumbnailConfig[]	parseThumbnailArguments(java.lang.String[] args)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CreateThumbnailProcess

public CreateThumbnailProcess()

Method Detail

execute

public void execute(WorkItem workItem,
                    WorkflowSession workflowSession,
                    MetaDataMap metaData)
             throws WorkflowException

Description copied from interface: WorkflowProcess

Executes a new Java process with the given WorkItem and WorkflowSession.

Parameters:

workItem - The WorkItem that defines the newly started JavaProcessNew.

workflowSession - The WorkflowSession that is used for starting the JavaProcess.

metaData - Process specific arguments can be passed here

Throws:

WorkflowException - Thrown in case something goes wrong during execution.

createThumbnails

public void createThumbnails(Asset asset,
                             CreateThumbnailProcess.Config config,
                             RenditionMaker renditionMaker)

createRenditionTemplates

public static RenditionTemplate[] createRenditionTemplates(Asset asset,
                                                           ThumbnailConfig[] thumbnails,
                                                           RenditionMaker renditionMaker)

parseConfig

public CreateThumbnailProcess.Config parseConfig(MetaDataMap metaData)

parseThumbnailArguments

public static ThumbnailConfig[] parseThumbnailArguments(java.lang.String[] args)

parseThumbnailArguments

public static ThumbnailConfig parseThumbnailArguments(java.lang.String arg)