com.day.cq.dam.commons.util

Class DamUtil

java.lang.Object

com.day.cq.dam.commons.util.DamUtil

public class DamUtil
extends java.lang.Object

This class provides various utility methods pertaining to DAM.

Since:

CQ 5.4.0

Constructor Summary

Constructors

Constructor and Description
DamUtil()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	assetToBinaryPath(java.lang.String path) Translates the path of an asset to its congruent DAM binary path, by replacing the /content/dam path prefix with /var/dam.
static java.lang.String	binaryToAssetPath(java.lang.String path) Translates the path of a DAM binary to its congruent asset path, by replacing the /var/dam path prefix with /content/dam.
static boolean	checkforAIFile(Asset asset)
static Node	createEmptyArchiveNode(Resource configResource, java.lang.String name, Session serviceSession) Deprecated.
static boolean	expiryStatus(Asset asset)
static java.util.List<java.lang.String>	findExpiringAssets(Session session, java.util.Calendar lowerBound, java.util.Calendar upperBound) Find all dam assets which are getting expired between lowerBound and upperBound.
static java.lang.String	findRelativePathOfAssetNode(Node assetNode, java.lang.String assetsRoot) Obtain Asset's path relative to specified Asset's root
static Node	getApplicableProfile(Asset asset, java.lang.String profileType, Session session) Get a specific Processing profile which may be applied to an asset
static Node	getApplicableProfile(Resource resource, java.lang.String profileType, Session session) Get a specific Processing profile which may be applied to an asset
static java.lang.String	getAppliedProcessingProfilePath(Asset asset) Deprecated.
static AssetCache	getAssetCache() Get an instance of AssetCache for access to cached rendition contents and aggregated InputStream and temporary File cleanups.
static Asset	getAssetFromID(ResourceResolver resolver, java.lang.String id) Obtain Asset provided the jcr:uuid
static Asset	getAssetFromMetaRes(Resource resource) Returns Asset for the dam:asset/jcr:content/metadata resource else returns null.
static java.util.Iterator<Asset>	getAssets(Resource res) Returns an iterator to all the assets contained in or represented by the resource.
static Rendition	getBestFitFPORendition(Asset asset, java.lang.String[] renditionPreferenceList)
static Rendition	getBestFitRendition(int width, java.util.List<Rendition> renditions) It iterates all renditions available and find the closest (preferably higher side) rendition and return the same.
static java.util.Calendar	getExpiryTime(Asset asset)
static java.awt.Dimension	getImageDimension(java.io.InputStream is, java.lang.String filename) getImageDimension : To get actual width and height of the rendition or image for proper UI rendering of thumbnails , earlier new Layer () API was being used which was inefficient.
static <T> T	getInheritedProperty(java.lang.String property, Resource resource, T defaultValue) This method searches for the property in the provided contentPath resource.
static Asset	getParentAsset(Resource resource)
static java.util.List<ResourceCollection>	getReferencedCollections(Resource resource)
static java.util.List<Asset>	getReferencedSubAssets(Resource resource)
static java.util.Collection<Asset>	getRefererAssets(ResourceResolver resolver, java.lang.String path)
static java.util.Collection<Asset>	getSubAssets(Resource resource)
static java.lang.String	getTenantAssetsRoot(Resource resource) Obtain Tenant Asset's root for specified Sling resource
static java.lang.String	getTenantAssetsRoot(ResourceResolver resolver) Obtain Tenant Asset's root for specified ResourceResolver
static java.lang.String	getTenantAssetsRoot(ResourceResolver resolver, java.lang.String assetPath) Obtain Tenant Asset's root for specified asset path and ResourceResolver This returns the tenant for the session associated with the resource resolver, not the tenant associated with the asset if provided assetPath can't be resolved to an Asset
static java.lang.String	getThumbnailName(int width, int height) Returns the name of a thumbnail in the DAM thumbnail name format, respecting the given dimensions of the thumbnail.
static java.lang.String	getThumbnailName(int width, int height, java.lang.String[] selectors) Behaves like getThumbnailName(int, int).
static java.lang.String	getThumbnailName(ThumbnailConfig config) Returns the expected rendition/thumbnail name based on the given thumbnail configuration.
static java.lang.String	getUserCollectionsPath(ResourceResolver resolver) Obtain collection path for specified tenant and user.
static java.lang.String	getValue(Node n, java.lang.String name, java.lang.String defaultValue) Returns the single property value from the given node n with name.
static boolean	isAsset(Resource resource) Checks whether the given Resource represents a Asset.
static boolean	isCollection(Resource resource) Checks if given resource represents a collection.
static boolean	isExpiredAsset(Asset asset) Returns whether the asset has expired.
static boolean	isExpiredAsset(Resource resource) Returns whether the resource has expired.
static boolean	isExpiredSubAsset(Resource resource) Returns whether the resource has any subasset which has expired.
static boolean	isFrozenNode(Resource resource) Checks whether the give Resource represents a frozen node.
static boolean	isImage(Asset asset) To check weather asset falls under Image category.
static boolean	isImage(java.lang.String mimeType) To check whether given mime type is an image mime type.
static boolean	isInRunningWorkflow(Resource resource) This function determines if an asset has its DamConstants.DAM_ASSET_STATE property is set to DamConstants.DAM_ASSET_STATE_PROCESSING.
static boolean	isMetadataRes(Resource resource) Returns true if Asset can be adapted from dam:asset/jcr:content/metadata resource else returns false.
static boolean	isPublic(Resource resource) Checks if a given resource is readable by the tenant specific group.
static boolean	isRendition(Resource resource) Checks whether the given Resource represents a Rendition of an Asset.
static boolean	isSmartCollection(Resource resource) Checks if given resource represent a smart collection
static boolean	isSubAsset(Resource resource) Indicates whether the given resource is an Asset's sub-asset.
static boolean	isThumbnail(Node file) This method determines whether the given Node represents a thumbnail of an asset.
static boolean	isValid(Asset asset) Checks if the asset is valid.
static boolean	isVideo(Asset asset) To check weather asset falls under Video category.
static Asset	resolveToAsset(Resource resource) Checks whether the given resource is an asset, and if not, travels upwards the resource hierarchy until a resource is an asset.
static void	setModified(Asset asset, java.lang.String user, java.util.Calendar date) This method updates the "last modified" information of the given Asset.
static Node	validateFolderNode(java.lang.String path, Session serviceSession)

Methods inherited from class java.lang.Object

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

Constructor Detail

DamUtil

public DamUtil()

Method Detail

assetToBinaryPath

public static java.lang.String assetToBinaryPath(java.lang.String path)

Translates the path of an asset to its congruent DAM binary path, by replacing the /content/dam path prefix with /var/dam. If the given path does not start with DAM's asset mountpoint, null is returned.

   DamUtil.assetToBinaryPath("/content/dam/myfolder/test.jpg")    = "/var/dam/myfolder/test.jpg"
   DamUtil.assetToBinaryPath(null)                                = null
 

Parameters:

path - The path to translate.

Returns:

The binary equivalent path or null if the given path is not a DAM asset path.

See Also:

DamConstants.MOUNTPOINT_BINARIES, DamConstants.MOUNTPOINT_ASSETS

binaryToAssetPath

public static java.lang.String binaryToAssetPath(java.lang.String path)

Translates the path of a DAM binary to its congruent asset path, by replacing the /var/dam path prefix with /content/dam. If the given path does not start with DAM's binary mountpoint, null is returned.

   DamUtil.binaryToAssetPath("/var/dam/myfolder/test.jpg")        = "/content/dam/myfolder/test.jpg"
   DamUtil.binaryToAssetPath(null)                                = null
 

Parameters:

path - The path to translate.

Returns:

The metadata equivalent path or null if the given path is not a DAM binary path.

See Also:

DamConstants.MOUNTPOINT_BINARIES, DamConstants.MOUNTPOINT_ASSETS

isThumbnail

public static boolean isThumbnail(Node file)

This method determines whether the given Node represents a thumbnail of an asset.

Parameters:

file - The node to check.

Returns:

true if the node represent's an asset's thumbnail, false otherwise.

getThumbnailName

public static java.lang.String getThumbnailName(int width,
                                                int height)

Returns the name of a thumbnail in the DAM thumbnail name format, respecting the given dimensions of the thumbnail. E.g. providing a width of 100 and a height of 100 would return the thumbnail name cq5dam.thumbnail.100.100.png. As a thumbnail represents a rendition of an Asset, the name can be used for easy retrieval of the thumbnail:

   ...
   final String thumbnailName = DamUtil.getThumbnailName(100, 100);
   final Resource thumbnail = asset.getRendition(thumbnailName);
   ...
 

Parameters:

width - The width of the thumbnail.

height - The height of the thumbnail.

Returns:

The rendition name of the thumbnail.

getThumbnailName

public static java.lang.String getThumbnailName(ThumbnailConfig config)

Returns the expected rendition/thumbnail name based on the given thumbnail configuration.

Parameters:

config - The ThumbnailConfig

Returns:

The Rendition name.

validateFolderNode

public static Node validateFolderNode(java.lang.String path,
                                      Session serviceSession)
                               throws RepositoryException

Throws:

RepositoryException

createEmptyArchiveNode

@Deprecated
public static Node createEmptyArchiveNode(Resource configResource,
                                                      java.lang.String name,
                                                      Session serviceSession)
                                               throws RepositoryException

Deprecated.

Throws:

RepositoryException

getThumbnailName

public static java.lang.String getThumbnailName(int width,
                                                int height,
                                                java.lang.String[] selectors)

Behaves like getThumbnailName(int, int). Additionally and optionally a string array of selectors to be added to the thumbnail name can be specified. E.g. providing width = 100, height = 100 and selectors = {"a", "b", "c"} would return the thumbnail name cq5dam.thumbnail.100.100.a.b.c.png. Example:

   ...
   final String[] selectors = {"a", "b", "c"};
   final String thumbnailName = DamUtil.getThumbnailName(100, 100, selectors);
   final Resource thumbnail = asset.getRendition(thumbnailName);
   ...
 

Parameters:

width - The width of the thumbnail.

height - The height of the thumbnail.

selectors - An array of selectors to be added. May be null (ignored).

Returns:

The rendition name of the thumbnail.

isRendition

public static boolean isRendition(Resource resource)

Checks whether the given Resource represents a Rendition of an Asset. The requirements are that given resource is stored within the renditions folder of an asset and that it's node type is nt:file.

Parameters:

resource - The resource to check.

Returns:

true if the resource is a rendition.

isMetadataRes

public static boolean isMetadataRes(Resource resource)

Returns true if Asset can be adapted from dam:asset/jcr:content/metadata resource else returns false.

getAssetFromMetaRes

public static Asset getAssetFromMetaRes(Resource resource)

Returns Asset for the dam:asset/jcr:content/metadata resource else returns null.

isAsset

public static boolean isAsset(Resource resource)

Checks whether the given Resource represents a Asset. The requirements are that the given resource is of node type dam:Asset.

Parameters:

resource - The resource to check.

Returns:

true if the resource is an asset.

isFrozenNode

public static boolean isFrozenNode(Resource resource)

Checks whether the give Resource represents a frozen node. The requirements are that the given resource is of node type nt:frozenNode.

Parameters:

resource - The resource to check

Returns:

true if the resource is an asset.

isSubAsset

public static boolean isSubAsset(Resource resource)

Indicates whether the given resource is an Asset's sub-asset.

Parameters:

resource - The Resource to check.

Returns:

true if this asset is a sub-asset.

resolveToAsset

public static Asset resolveToAsset(Resource resource)

Checks whether the given resource is an asset, and if not, travels upwards the resource hierarchy until a resource is an asset.

Parameters:

resource - The resource to check.

Returns:

The Asset or null if no asset was found.

setModified

public static void setModified(Asset asset,
                               java.lang.String user,
                               java.util.Calendar date)

This method updates the "last modified" information of the given Asset.

Parameters:

asset - The asset to update.

user - The username of who updated the asset.

date - The date/time the updated happened.

findExpiringAssets

public static java.util.List<java.lang.String> findExpiringAssets(Session session,
                                                                  java.util.Calendar lowerBound,
                                                                  java.util.Calendar upperBound)
                                                           throws RepositoryException

Find all dam assets which are getting expired between lowerBound and upperBound.

Parameters:

session -

lowerBound - the lower bound of date where asset expiration is computed. If null it is not considered as query criterion

upperBound - the upper bound of date where asset expiration is computed. If null it is not considered as query criterion

Throws:

RepositoryException

isExpiredAsset

public static boolean isExpiredAsset(Asset asset)

Returns whether the asset has expired.

Parameters:

asset -

Returns:

true, if the asset has expired

isExpiredAsset

public static boolean isExpiredAsset(Resource resource)

Returns whether the resource has expired.

Parameters:

resource -

Returns:

true, if the resource has expired

isExpiredSubAsset

public static boolean isExpiredSubAsset(Resource resource)

Returns whether the resource has any subasset which has expired.

Parameters:

resource -

Returns:

true, if any of the subasset of the asset has expired

getValue

public static java.lang.String getValue(Node n,
                                        java.lang.String name,
                                        java.lang.String defaultValue)
                                 throws RepositoryException

Returns the single property value from the given node n with name. If there is no single-valued property for the given name, then the defaultValue is returned.

Parameters:

n - a node.

name - a property name.

defaultValue - the default value.

Returns:

the value for the given property name or the default value.

Throws:

RepositoryException - if value cannot be retrieved

isImage

public static boolean isImage(Asset asset)

To check weather asset falls under Image category.

Parameters:

asset -

Returns:

True if asset is of type Image.

isImage

public static boolean isImage(java.lang.String mimeType)

To check whether given mime type is an image mime type.

Parameters:

mimeType -

Returns:

True if mimeType is an Image mime type.

isVideo

public static boolean isVideo(Asset asset)

To check weather asset falls under Video category.

Parameters:

asset -

Returns:

True if asset is of type video.

isSmartCollection

public static boolean isSmartCollection(Resource resource)

Checks if given resource represent a smart collection

Parameters:

resource - an instance of Resource

Returns:

true if resource represents a smart collection false if resource does not represents a smart collection

isCollection

public static boolean isCollection(Resource resource)

Checks if given resource represents a collection.

Parameters:

resource - an instance of Resource

Returns:

true if resource represents any collection type

isPublic

public static boolean isPublic(Resource resource)
                        throws RepositoryException

Checks if a given resource is readable by the tenant specific group. If not defined checks for the dam-users group.

Parameters:

resource - DAM resource like collection, snippet

Returns:

True if readable by tenant default group

Throws:

RepositoryException - Error reading permissions

getApplicableProfile

public static Node getApplicableProfile(Asset asset,
                                        java.lang.String profileType,
                                        Session session)

Get a specific Processing profile which may be applied to an asset

Parameters:

asset - The asset we get from payload of DamUpdateAsset Workflow

profileType - The type of profile to get (metadata/video/image)

session - To retrieve nodes from JCR

Returns:

{Node} the Processing Profile, null if not found

getApplicableProfile

public static Node getApplicableProfile(Resource resource,
                                        java.lang.String profileType,
                                        Session session)

Get a specific Processing profile which may be applied to an asset

Parameters:

resource - The resource we get from payload of DamUpdateAsset Workflow

profileType - The type of profile to get (metadata/video/image)

session - To retrieve nodes from JCR

Returns:

{Node} the Processing Profile, null if not found

getAppliedProcessingProfilePath

@Deprecated
public static java.lang.String getAppliedProcessingProfilePath(Asset asset)

Deprecated.

Processing Profile overview has been removed. Now individual PPs are applied to folders. return null use @getApplicableProfile

getAssets

public static java.util.Iterator<Asset> getAssets(Resource res)

Returns an iterator to all the assets contained in or represented by the resource. If resource is a folder, then all its folders are navigated recursively and assets are listed If a resource is ResourceCollection, then all its member resources are consulted and navigated recursively if any of the member represent folder or ResourceCollection. If the resource represents an asset itself, an iterator of single item i.e. Collections.singletonList(res.adaptTo(Asset.class)).iterator();

Parameters:

res - a sling Resource

Returns:

an Iterator of Asset

checkforAIFile

public static boolean checkforAIFile(Asset asset)

getBestFitFPORendition

public static Rendition getBestFitFPORendition(Asset asset,
                                               java.lang.String[] renditionPreferenceList)

Parameters:

asset - The asset whose best fit fpo rendition is sought

renditionPreferenceList - The list of renditions in order of preference

Returns:

The best fit rendition if found per the specified preference list else null

getBestFitRendition

public static Rendition getBestFitRendition(int width,
                                            java.util.List<Rendition> renditions)

It iterates all renditions available and find the closest (preferably higher side) rendition and return the same.

Parameters:

width -

renditions -

Returns:

rendition

getImageDimension

public static java.awt.Dimension getImageDimension(java.io.InputStream is,
                                                   java.lang.String filename)

getImageDimension : To get actual width and height of the rendition or image for proper UI rendering of thumbnails , earlier new Layer () API was being used which was inefficient.

expiryStatus

public static boolean expiryStatus(Asset asset)

getReferencedSubAssets

public static java.util.List<Asset> getReferencedSubAssets(Resource resource)

getReferencedCollections

public static java.util.List<ResourceCollection> getReferencedCollections(Resource resource)

getSubAssets

public static java.util.Collection<Asset> getSubAssets(Resource resource)

getRefererAssets

public static java.util.Collection<Asset> getRefererAssets(ResourceResolver resolver,
                                                           java.lang.String path)

getExpiryTime

public static java.util.Calendar getExpiryTime(Asset asset)

getParentAsset

public static Asset getParentAsset(Resource resource)

isValid

public static boolean isValid(Asset asset)
                       throws RepositoryException

Checks if the asset is valid. It is valid if it has content and if the on-/off time range spans the current time.

Returns:

true if the page is valid; false otherwise.

Throws:

RepositoryException

getTenantAssetsRoot

public static java.lang.String getTenantAssetsRoot(ResourceResolver resolver)

Obtain Tenant Asset's root for specified ResourceResolver

Returns:

the tenant root-path

getTenantAssetsRoot

public static java.lang.String getTenantAssetsRoot(ResourceResolver resolver,
                                                   java.lang.String assetPath)

Obtain Tenant Asset's root for specified asset path and ResourceResolver This returns the tenant for the session associated with the resource resolver, not the tenant associated with the asset if provided assetPath can't be resolved to an Asset

Returns:

the tenant root-path

getTenantAssetsRoot

public static java.lang.String getTenantAssetsRoot(Resource resource)

Obtain Tenant Asset's root for specified Sling resource

Returns:

the tenant root-path

getUserCollectionsPath

public static java.lang.String getUserCollectionsPath(ResourceResolver resolver)

Obtain collection path for specified tenant and user.

Parameters:

resolver - Adaptable for tenant and user

Returns:

path for user collections

getAssetFromID

public static Asset getAssetFromID(ResourceResolver resolver,
                                   java.lang.String id)
                            throws RepositoryException

Obtain Asset provided the jcr:uuid

Returns:

the Asset, or null if asset with specified ID wasn't found

Throws:

RepositoryException

findRelativePathOfAssetNode

public static java.lang.String findRelativePathOfAssetNode(Node assetNode,
                                                           java.lang.String assetsRoot)
                                                    throws RepositoryException

Obtain Asset's path relative to specified Asset's root

Returns:

Asset's Relative Path (see DamConstants.DAM_ASSET_RELATIVE_PATH

Throws:

RepositoryException

getInheritedProperty

public static <T> T getInheritedProperty(java.lang.String property,
                                         Resource resource,
                                         T defaultValue)

This method searches for the property in the provided contentPath resource. Moves up the repository path until finds the property on the node. Tries to convert the found value to type of default value. If can't, returns the defaultValue

Parameters:

property - the property user is looking for.

resource - the resource representing the path where the property has to be searched

defaultValue -

Returns:

the value configured on the node hierarchy converted to type of default value. defaultValue if property not found on the path hierarchy

isInRunningWorkflow

public static boolean isInRunningWorkflow(Resource resource)

This function determines if an asset has its DamConstants.DAM_ASSET_STATE property is set to DamConstants.DAM_ASSET_STATE_PROCESSING. Presently this returns true only if in DAM update asset workflow.

Parameters:

resource - the resource to check

Returns:

true if DamConstants.DAM_ASSET_STATE property is set to DamConstants.DAM_ASSET_STATE_PROCESSING false otherwise

getAssetCache

public static AssetCache getAssetCache()

Get an instance of AssetCache for access to cached rendition contents and aggregated InputStream and temporary File cleanups.

Returns:

a suitable asset cache