# Class Sign

java.lang.Object
org.gradle.api.internal.AbstractTask
org.gradle.api.DefaultTask
org.gradle.plugins.signing.Sign

All Implemented Interfaces:
  `Comparable<Task>, org.gradle.api.internal.DynamicObjectAware, org.gradle.api.internal.TaskInternal, Named, ExtensionAware, Task, SignatureSpec, Configurable<Task>`

@DisableCachingByDefault(because="Not made cacheable, yet") public abstract class Sign extends DefaultTask implements SignatureSpec
A task for creating digital signature files for one or more; tasks, files, publishable artifacts or configurations.

The task produces `Signature`

objects that are publishable artifacts and can be assigned to another configuration.

The signature objects are created with defaults and using this tasks signatory and signature type.

- ## Nested Class Summary

  ### Nested classes/interfaces inherited from interface Named

  `Named.Namer`

- ## Field Summary

  ### Fields inherited from interface Task

  `TASK_ACTION, TASK_CONSTRUCTOR_ARGS, TASK_DEPENDS_ON, TASK_DESCRIPTION, TASK_GROUP, TASK_NAME, TASK_OVERWRITE, TASK_TYPE`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Sign()`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `generate()`
  Generates the signature files.
  `protected abstract org.gradle.api.internal.CollectionCallbackActionDecorator`
  `getCallbackActionDecorator()`
  Required for decorating reports container callbacks for tracing user code application.
  `protected abstract org.gradle.api.internal.DocumentationRegistry`
  `getDocumentationRegistry()`
  `protected abstract org.gradle.api.internal.file.FileCollectionFactory`
  `getFileCollectionFactory()`
  `FileCollection`
  `getFilesToSign()`
  All of the files that will be signed by this task.
  `Map<String, Signature.Generator>`
  `getGeneratorsByKey()`
  The signature generators for this task mapped by a unique key used for up-to-date checking.
  `protected abstract ObjectFactory`
  `getObjectFactory()`
  `protected abstract Problems`
  `getProblems()`
  `Signatory`
  `getSignatory()`
  Returns the signatory for this signing task.
  `FileCollection`
  `getSignatureFiles()`
  All of the signature files that will be generated by this operation.
  `DomainObjectSet<Signature>`
  `getSignatures()`
  The signatures generated by this task.
  `Map<String, Signature>`
  `getSignaturesByKey()`
  The signatures generated by this task mapped by a unique key used for up-to-date checking.
  `SignatureType`
  `getSignatureType()`
  The signature representation that will be created.
  `Signature`
  `getSingleSignature()`
  Returns the single signature generated by this task.
  `boolean`
  `isRequired()`
  Whether or not this task should fail if no signatory or signature type are configured at generation time.
  `void`
  `required(boolean required)`
  Change whether or not this task should fail if no signatory or signature type are configured at the time of generation.
  `void`
  `setRequired(boolean required)`
  Whether or not it is required that this signature be generated.
  `void`
  `setSignatory(Signatory signatory)`
  Sets the signatory that will be signing the input.
  `void`
  `setSignatureType(SignatureType signatureType)`
  Sets the signature representation that the signatures will be produced as.
  `void`
  `sign(File... files)`
  Configures the task to sign each of the given files
  `void`
  `sign(String classifier, File... files)`
  Configures the task to sign each of the given artifacts, using the given classifier as the classifier for the resultant signature publish artifact.
  `void`
  `sign(Configuration... configurations)`
  Configures the task to sign every artifact of the given configurations
  `void`
  `sign(PublishArtifact... publishArtifacts)`
  Configures the task to sign each of the given artifacts
  `void`
  `sign(Publication... publications)`
  Configures the task to sign every artifact of the given publications
  `void`
  `sign(Task... tasks)`
  Configures the task to sign the archive produced for each of the given tasks (which must be archive tasks).
  `void`
  `signatory(Signatory signatory)`
  Changes the signatory of the signatures.

  ### Methods inherited from class DefaultTask

  `compareTo, configure, dependsOn, doFirst, doFirst, doFirst, doLast, doLast, doLast, finalizedBy, getActions, getAnt, getDependsOn, getDescription, getDestroyables, getDidWork, getEnabled, getExtensions, getFinalizedBy, getGroup, getInputs, getLocalState, getLogger, getLogging, getMustRunAfter, getName, getOutputs, getPath, getProject, getShouldRunAfter, getState, getTaskDependencies, getTemporaryDir, getTimeout, hasProperty, mustRunAfter, onlyIf, onlyIf, onlyIf, property, setActions, setDependsOn, setDescription, setDidWork, setEnabled, setFinalizedBy, setGroup, setMustRunAfter, setOnlyIf, setOnlyIf, setOnlyIf, setProperty, setShouldRunAfter, shouldRunAfter, usesService`

  ### Methods inherited from class org.gradle.api.internal.AbstractTask

  `acceptServiceReferences, appendParallelSafeAction, doNotTrackState, doNotTrackStateIf, getAsDynamicObject, getIdentityPath, getImpliesSubProjects, getLifecycleDependencies, getLoggingManager, getOnlyIf, getReasonNotToTrackState, getReasonsNotToTrackState, getReasonTaskIsIncompatibleWithConfigurationCache, getRequiredServices, getServices, getSharedResources, getStandardOutputCapture, getTaskActions, getTaskIdentity, getTemporaryDirFactory, hasTaskActions, injectIntoNewInstance, isCompatibleWithConfigurationCache, isEnabled, isHasCustomActions, notCompatibleWithConfigurationCache, prependParallelSafeAction, restoreOnlyIf, restoreTaskActions, setImpliesSubProjects`

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

  ### Methods inherited from interface Task

  `doNotTrackState, notCompatibleWithConfigurationCache`

- ## Constructor Details

  - ### Sign

    @Inject public Sign()

- ## Method Details

  - ### getProblems

    @Inject protected abstract Problems getProblems()

  - ### getDocumentationRegistry

    @Inject protected abstract org.gradle.api.internal.DocumentationRegistry getDocumentationRegistry()

  - ### sign

    public void sign(Task... tasks)
    Configures the task to sign the archive produced for each of the given tasks (which must be archive tasks).

  - ### sign

    public void sign(PublishArtifact... publishArtifacts)
    Configures the task to sign each of the given artifacts

  - ### sign

    public void sign(File... files)
    Configures the task to sign each of the given files

  - ### sign

    public void sign(String classifier, File... files)
    Configures the task to sign each of the given artifacts, using the given classifier as the classifier for the resultant signature publish artifact.

  - ### sign

    public void sign(Configuration... configurations)
    Configures the task to sign every artifact of the given configurations

  - ### sign

    public void sign(Publication... publications)
    Configures the task to sign every artifact of the given publications
    Since:
      4.8

  - ### signatory

    public void signatory(Signatory signatory)
    Changes the signatory of the signatures.

  - ### required

    public void required(boolean required)
    Change whether or not this task should fail if no signatory or signature type are configured at the time of generation.

  - ### generate

    public void generate()
    Generates the signature files.

  - ### getSignatures

    @Internal public DomainObjectSet<Signature> getSignatures()
    The signatures generated by this task.

  - ### getGeneratorsByKey

    @Incubating public Map<String, Signature.Generator> getGeneratorsByKey()
    The signature generators for this task mapped by a unique key used for up-to-date checking.
    Since:
      8.1

  - ### getSignaturesByKey

    @Internal public Map<String, Signature> getSignaturesByKey()
    The signatures generated by this task mapped by a unique key used for up-to-date checking.
    Since:
      5.1

  - ### getSingleSignature

    @Internal public Signature getSingleSignature()
    Returns the single signature generated by this task.
    Returns:
      The signature.
    Throws:
      `IllegalStateException` - if there is not exactly one signature.

  - ### getFileCollectionFactory

    @Inject protected abstract org.gradle.api.internal.file.FileCollectionFactory getFileCollectionFactory()

  - ### getFilesToSign

    @Internal public FileCollection getFilesToSign()
    All of the files that will be signed by this task.

  - ### getSignatureFiles

    @Internal public FileCollection getSignatureFiles()
    All of the signature files that will be generated by this operation.

  - ### getSignatureType

    @Optional public SignatureType getSignatureType()
    Description copied from interface: `SignatureSpec`
    The signature representation that will be created.
    Specified by:
      `getSignatureType` in interface `SignatureSpec`
    Returns:
      the signature type, or `null` if none specified.

  - ### setSignatureType

    public void setSignatureType(SignatureType signatureType)
    Description copied from interface: `SignatureSpec`
    Sets the signature representation that the signatures will be produced as.
    Specified by:
      `setSignatureType` in interface `SignatureSpec`
    Parameters:
      `signatureType` - the signature type to use

  - ### getSignatory

    @Optional public Signatory getSignatory()
    Returns the signatory for this signing task.
    Specified by:
      `getSignatory` in interface `SignatureSpec`
    Returns:
      the signatory

  - ### setSignatory

    public void setSignatory(Signatory signatory)
    Description copied from interface: `SignatureSpec`
    Sets the signatory that will be signing the input.
    Specified by:
      `setSignatory` in interface `SignatureSpec`
    Parameters:
      `signatory` - The signatory

  - ### isRequired

    @Input public boolean isRequired()
    Whether or not this task should fail if no signatory or signature type are configured at generation time.

    Defaults to `true`.

    Specified by:
      `isRequired` in interface `SignatureSpec`
    Returns:
      Whether or not it is required that this signature be generated.

  - ### setRequired

    public void setRequired(boolean required)
    Description copied from interface: `SignatureSpec`
    Whether or not it is required that this signature be generated.
    Specified by:
      `setRequired` in interface `SignatureSpec`
    Parameters:
      `required` - Whether or not it is required that this signature be generated.
    See Also:
      - `SignatureSpec.isRequired()`

  - ### getCallbackActionDecorator

    @Inject protected abstract org.gradle.api.internal.CollectionCallbackActionDecorator getCallbackActionDecorator()
    Required for decorating reports container callbacks for tracing user code application.
    Since:
      5.1

  - ### getObjectFactory

    @Inject protected abstract ObjectFactory getObjectFactory()