org.alfresco.repo.content.transform

Class ComplexContentTransformer

java.lang.Object

org.alfresco.repo.content.transform.ContentTransformerHelper

org.alfresco.repo.content.transform.AbstractContentTransformerLimits

org.alfresco.repo.content.transform.AbstractContentTransformer2

org.alfresco.repo.content.transform.ComplexContentTransformer

All Implemented Interfaces:

ContentWorker, ContentTransformer, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.InitializingBean

@AlfrescoPublicApi
public class ComplexContentTransformer
extends AbstractContentTransformer2
implements org.springframework.beans.factory.InitializingBean

Transformer that passes a document through several nested transformations in order to accomplish its goal.

Author:

Derek Hulley

Field Summary

Fields inherited from class org.alfresco.repo.content.transform.AbstractContentTransformerLimits

transformerDebug

Fields inherited from class org.alfresco.repo.content.transform.ContentTransformerHelper

transformerConfig

Constructor Summary

Constructors

Constructor and Description
ComplexContentTransformer()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Ensures that required properties have been set
String	getComments(boolean available) Returns the transformer properties predefined (hard coded or implied) by this transformer.
List<String>	getIntermediateMimetypes()
List<ContentTransformer>	getIntermediateTransformers()
protected TransformationOptionLimits	getLimits(String sourceMimetype, String targetMimetype, TransformationOptions options) Returns the limits from this transformer combined with those of the first transformer in the chain.
protected boolean	isPageLimitSupported(String sourceMimetype, String targetMimetype, TransformationOptions options) Indicates if 'page' limits are supported by the first transformer in the chain.
boolean	isTransformable(String sourceMimetype, long sourceSize, String targetMimetype, TransformationOptions options) Indicates whether the provided source mimetype can be transformed into the target mimetype with the options specified by this content transformer.
boolean	isTransformableMimetype(String sourceMimetype, String targetMimetype, TransformationOptions options) Indicates if this transformer is able to transform the given source mimetype to the target mimetype.
void	setContentService(ContentService contentService) Sets the ContentService.
void	setIntermediateMimetypes(List<String> intermediateMimetypes) Set the intermediate mimetypes that the transformer must take the content through.
void	setTransformationOptionOverrides(Map<String,Serializable> transformationOptionOverrides) Sets any properties to be set on the TransformationOption as passed in.
void	setTransformers(List<ContentTransformer> transformers) The list of transformers to use.
void	transformInternal(ContentReader reader, ContentWriter writer, TransformationOptions options) Method to be implemented by subclasses wishing to make use of the common infrastructural code provided by this class.

Methods inherited from class org.alfresco.repo.content.transform.AbstractContentTransformer2

checkTransformable, getExecutorService, getRetryTransformOnDifferentMimeType, getStrictMimeTypeCheck, getTransformationTime, getTransformationTime, isTransformationLimitedInternally, recordError, recordTime, recordTime, register, setAdditionalThreadTimout, setExecutorService, setRegisterTransformer, setRegistry, setRetryTransformOnDifferentMimeType, setStrictMimeTypeCheck, setUseTimeoutThread, toString, transform, transform, transform

Methods inherited from class org.alfresco.repo.content.transform.AbstractContentTransformerLimits

getLimits, getLimits, getMaxPages, getMaxSourceSizeKBytes, getMaxSourceSizeKBytes, getPageLimit, getReadLimitKBytes, getReadLimitTimeMs, getTimeoutMs, isTransformable, isTransformableSize, setLimits, setMaxPages, setMaxSourceSizeKBytes, setMimetypeLimits, setPageLimit, setPageLimitsSupported, setReaderLimits, setReadLimitKBytes, setReadLimitTimeMs, setTimeoutMs, setTransformerDebug

Methods inherited from class org.alfresco.repo.content.transform.ContentTransformerHelper

deprecatedSetter, equals, getBeanName, getCommentsOnlySupports, getExtensionOrAny, getMimetype, getMimetypeService, getName, getSimpleName, hashCode, isExplicitTransformation, isSupportedTransformation, onlySupports, setBeanName, setExplicitTransformations, setMimetypeService, setSupportedTransformations, setTransformerConfig, setUnsupportedTransformations

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.alfresco.repo.content.transform.ContentTransformer

getName, isExplicitTransformation

Constructor Detail

ComplexContentTransformer

public ComplexContentTransformer()

Method Detail

setTransformers

public void setTransformers(List<ContentTransformer> transformers)

The list of transformers to use. If any element is null all possible transformers will be considered. If any element is null, the contentService property must be set.

If a single transformer is supplied, then it will still be used.

Parameters:

transformers - list of at least one transformer

See Also:

setContentService(ContentService)

setIntermediateMimetypes

public void setIntermediateMimetypes(List<String> intermediateMimetypes)

Set the intermediate mimetypes that the transformer must take the content through. If the transformation A..B..C is performed in order to simulate A..C, then B is the intermediate mimetype. There must always be n-1 intermediate mimetypes, where n is the number of transformers taking part in the transformation.

Parameters:

intermediateMimetypes - intermediate mimetypes to transition the content through.

setTransformationOptionOverrides

public void setTransformationOptionOverrides(Map<String,Serializable> transformationOptionOverrides)

Sets any properties to be set on the TransformationOption as passed in. This allows you to force certain properties to always be set on it, to control the transformers in a different way to their default. Note that only properties that are supported by the passed-in TransformationOptions are changed, others are ignored.

setContentService

public void setContentService(ContentService contentService)

Sets the ContentService. Only required if null transformers are provided to setTransformers(List).

Parameters:

contentService -

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Ensures that required properties have been set

Specified by:

afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean

Throws:

Exception

isTransformable

public boolean isTransformable(String sourceMimetype,
                               long sourceSize,
                               String targetMimetype,
                               TransformationOptions options)

Description copied from class: AbstractContentTransformerLimits

Indicates whether the provided source mimetype can be transformed into the target mimetype with the options specified by this content transformer.

Implementation calls the deprecated overloaded method without the sourceSize parameter and then AbstractContentTransformerLimits.isTransformableSize(String, long, String, TransformationOptions).

Specified by:

isTransformable in interface ContentTransformer

Overrides:

isTransformable in class AbstractContentTransformerLimits

Parameters:

sourceMimetype - the source mimetype

sourceSize - the size (bytes) of the source. If negative it is unknown.

targetMimetype - the target mimetype

options - the transformation options

Returns:

boolean true if this content transformer can satify the mimetypes and options specified, false otherwise

isTransformableMimetype

public boolean isTransformableMimetype(String sourceMimetype,
                                       String targetMimetype,
                                       TransformationOptions options)

Description copied from class: AbstractContentTransformerLimits

Indicates if this transformer is able to transform the given source mimetype to the target mimetype. If overridden, consider also overriding ContentTransformerHelper.getComments(boolean).

Specified by:

isTransformableMimetype in interface ContentTransformer

Overrides:

isTransformableMimetype in class AbstractContentTransformerLimits

Parameters:

sourceMimetype - the source mimetype

targetMimetype - the target mimetype

options - the transformation options

Returns:

boolean true if this content transformer can satify the mimetypes, false otherwise

isPageLimitSupported

protected boolean isPageLimitSupported(String sourceMimetype,
                                       String targetMimetype,
                                       TransformationOptions options)

Indicates if 'page' limits are supported by the first transformer in the chain. If the first transformer is dynamic, all possible first transformers must support it.

Overrides:

isPageLimitSupported in class AbstractContentTransformerLimits

Returns:

true if the first transformer supports them.

getLimits

protected TransformationOptionLimits getLimits(String sourceMimetype,
                                               String targetMimetype,
                                               TransformationOptions options)

Returns the limits from this transformer combined with those of the first transformer in the chain. If the first transformer is dynamic, the lowest common denominator between all possible first transformers are combined.

Overrides:

getLimits in class AbstractContentTransformerLimits

transformInternal

public void transformInternal(ContentReader reader,
                              ContentWriter writer,
                              TransformationOptions options)
                       throws Exception

Description copied from class: AbstractContentTransformer2

Method to be implemented by subclasses wishing to make use of the common infrastructural code provided by this class.

Specified by:

transformInternal in class AbstractContentTransformer2

Parameters:

reader - the source of the content to transform

writer - the target to which to write the transformed content

options - a map of options to use when performing the transformation. The map will never be null.

Throws:

Exception - exceptions will be handled by this class - subclasses can throw anything

See Also:

AbstractContentTransformer2.transformInternal(org.alfresco.service.cmr.repository.ContentReader, org.alfresco.service.cmr.repository.ContentWriter, org.alfresco.service.cmr.repository.TransformationOptions)

getIntermediateMimetypes

public List<String> getIntermediateMimetypes()

getIntermediateTransformers

public List<ContentTransformer> getIntermediateTransformers()

getComments

public String getComments(boolean available)

Returns the transformer properties predefined (hard coded or implied) by this transformer.

Specified by:

getComments in interface ContentTransformer

Overrides:

getComments in class ContentTransformerHelper

Parameters:

available - indicates if the transformer has been registered and is available to be selected. false indicates that the transformer is only available as a component of a complex transformer.

Returns:

one line per property. The simple transformer name is returned by default as a comment.