TarResource (Apache Ant API)
Description: declaration: package: org.apache.tools.ant.types.resources, class: TarResource

# Class TarResource

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.types.DataType
org.apache.tools.ant.types.Resource
org.apache.tools.ant.types.resources.ArchiveResource
org.apache.tools.ant.types.resources.TarResource

All Implemented Interfaces:
  `Cloneable, Comparable<Resource>, Iterable<Resource>, ResourceCollection`

public class TarResource extends ArchiveResource
A Resource representation of an entry in a tar archive.

Since:
  Ant 1.7

- ## Field Summary

  ### Fields inherited from class Resource

  `MAGIC, UNKNOWN_DATETIME, UNKNOWN_SIZE`
  Modifier and Type
  Field
  Description
  `protected static final int`
  `MAGIC`
  Magic number
  `static final long`
  `UNKNOWN_DATETIME`
  Constant unknown datetime for getLastModified
  `static final long`
  `UNKNOWN_SIZE`
  Constant unknown size

  ### Fields inherited from class DataType

  `checked, ref`
  Modifier and Type
  Field
  Description
  `protected boolean`
  `checked`
  Deprecated.
  since 1.7.
  `protected Reference`
  `ref`
  Deprecated.
  since 1.7.

  ### Fields inherited from class ProjectComponent

  `description, location, project`
  Modifier and Type
  Field
  Description
  `protected String`
  `description`
  Deprecated.
  since 1.6.x.
  `protected Location`
  `location`
  Deprecated.
  since 1.6.x.
  `protected Project`
  `project`
  Deprecated.
  since 1.6.x.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `TarResource()`
  Default constructor.
  `TarResource(File a, TarEntry e)`
  Construct a TarResource representing the specified entry in the specified archive.
  `TarResource(Resource a, TarEntry e)`
  Construct a TarResource representing the specified entry in the specified archive.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `protected void`
  `fetchEntry()`
  fetches information from the named entry inside the archive.
  `int`
  `getGid()`
  Deprecated.
  `String`
  `getGroup()`
  `InputStream`
  `getInputStream()`
  Return an InputStream for reading the contents of this Resource.
  `byte`
  `getLinkFlag()`
  `String`
  `getLinkName()`
  `long`
  `getLongGid()`
  `long`
  `getLongUid()`
  `OutputStream`
  `getOutputStream()`
  Get an OutputStream for the Resource.
  `protected TarResource`
  `getRef()`
  Perform the check for circular references and return the referenced Resource.
  `int`
  `getUid()`
  Deprecated.
  `String`
  `getUserName()`

  ### Methods inherited from class ArchiveResource

  `addConfigured, checkEntry, compareTo, dieOnCircularReference, equals, getArchive, getLastModified, getMode, getSize, hashCode, isDirectory, isExists, setArchive, setMode, setRefid, toString`
  Modifier and Type
  Method
  Description
  `void`
  `addConfigured(ResourceCollection a)`
  Sets the archive that holds this as a single element Resource collection.
  `protected final void`
  `checkEntry()`
  Validate settings and ensure that the represented "archive entry" has been established.
  `int`
  `compareTo(Resource another)`
  Compare this ArchiveResource to another Resource.
  `protected void`
  `dieOnCircularReference(Stack<Object> stk, Project p)`
  Check to see whether any DataType we hold references to is included in the Stack (which holds all DataType instances that directly or indirectly reference this instance, including this instance itself).
  `boolean`
  `equals(Object another)`
  Compare another Object to this ArchiveResource for equality.
  `Resource`
  `getArchive()`
  Get the archive that holds this Resource.
  `long`
  `getLastModified()`
  Get the last modified date of this Resource.
  `int`
  `getMode()`
  Get the file or dir mode for this Resource.
  `long`
  `getSize()`
  Get the size of this Resource.
  `int`
  `hashCode()`
  Get the hash code for this Resource.
  `boolean`
  `isDirectory()`
  Learn whether this Resource represents a directory.
  `boolean`
  `isExists()`
  Find out whether this Resource represents an existing Resource.
  `void`
  `setArchive(File a)`
  Set the archive that holds this Resource.
  `void`
  `setMode(int mode)`
  Sets the file or dir mode for this resource.
  `void`
  `setRefid(Reference r)`
  Overrides the super version.
  `String`
  `toString()`
  Format this Resource as a String.

  ### Methods inherited from class Resource

  `as, asOptional, clone, getMagicNumber, getName, isFilesystemOnly, iterator, setDirectory, setExists, setLastModified, setName, setSize, size, toLongString`
  Modifier and Type
  Method
  Description
  `<T> T`
  `as(Class<T> clazz)`
  Returns a view of this resource that implements the interface given as the argument or null if there is no such view.
  `<T> Optional<T>`
  `asOptional(Class<T> clazz)`
  Return `Resource.as(Class)` as an `Optional`.
  `Object`
  `clone()`
  Clone this Resource.
  `protected static int`
  `getMagicNumber(byte[] seed)`
  Create a "magic number" for use in hashCode calculations.
  `String`
  `getName()`
  Name attribute will contain the path of a file relative to the root directory of its fileset or the recorded path of a zip entry.
  `boolean`
  `isFilesystemOnly()`
  Fulfill the ResourceCollection contract.
  `Iterator<Resource>`
  `iterator()`
  Fulfill the ResourceCollection contract.
  `void`
  `setDirectory(boolean directory)`
  Set the directory attribute.
  `void`
  `setExists(boolean exists)`
  Set the exists attribute.
  `void`
  `setLastModified(long lastmodified)`
  Set the last modification attribute.
  `void`
  `setName(String name)`
  Set the name of this Resource.
  `void`
  `setSize(long size)`
  Set the size of this Resource.
  `int`
  `size()`
  Fulfill the ResourceCollection contract.
  `final String`
  `toLongString()`
  Get a long String representation of this Resource.

  ### Methods inherited from class DataType

  `checkAttributesAllowed, checkChildrenAllowed, circularReference, dieOnCircularReference, dieOnCircularReference, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, pushAndInvokeCircularReferenceCheck, setChecked, tooManyAttributes`
  Modifier and Type
  Method
  Description
  `protected void`
  `checkAttributesAllowed()`
  check that it is ok to set attributes, i.e that no reference is defined
  `protected void`
  `checkChildrenAllowed()`
  check that it is ok to add children, i.e that no reference is defined
  `protected BuildException`
  `circularReference()`
  Creates an exception that indicates the user has generated a loop of data types referencing each other.
  `protected void`
  `dieOnCircularReference()`
  Convenience method.
  `protected void`
  `dieOnCircularReference(Project p)`
  Convenience method.
  `protected <T> T`
  `getCheckedRef()`
  Deprecated.
  use getCheckedRef(Class)
  `protected <T> T`
  `getCheckedRef(Class<T> requiredClass)`
  Performs the check for circular references and returns the referenced object.
  `protected <T> T`
  `getCheckedRef(Class<T> requiredClass, String dataTypeName)`
  Performs the check for circular references and returns the referenced object.
  `protected <T> T`
  `getCheckedRef(Class<T> requiredClass, String dataTypeName, Project project)`
  Performs the check for circular references and returns the referenced object.
  `protected <T> T`
  `getCheckedRef(Project p)`
  Deprecated.
  use getCheckedRef(Class)
  `protected String`
  `getDataTypeName()`
  Gets as descriptive as possible a name used for this datatype instance.
  `Reference`
  `getRefid()`
  get the reference set on this object
  `static void`
  `invokeCircularReferenceCheck(DataType dt, Stack<Object> stk, Project p)`
  Allow DataTypes outside org.apache.tools.ant.types to indirectly call dieOnCircularReference on nested DataTypes.
  `protected boolean`
  `isChecked()`
  The flag that is used to indicate that circular references have been checked.
  `boolean`
  `isReference()`
  Has the refid attribute of this element been set?
  `protected BuildException`
  `noChildrenAllowed()`
  Creates an exception that indicates that this XML element must not have child elements if the refid attribute is set.
  `static void`
  `pushAndInvokeCircularReferenceCheck(DataType dt, Stack<Object> stk, Project p)`
  Allow DataTypes outside org.apache.tools.ant.types to indirectly call dieOnCircularReference on nested DataTypes.
  `protected void`
  `setChecked(boolean checked)`
  Set the flag that is used to indicate that circular references have been checked.
  `protected BuildException`
  `tooManyAttributes()`
  Creates an exception that indicates that refid has to be the only attribute if it is set.

  ### Methods inherited from class ProjectComponent

  `getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject`
  Modifier and Type
  Method
  Description
  `String`
  `getDescription()`
  Returns the description of the current action.
  `Location`
  `getLocation()`
  Returns the file/location where this task was defined.
  `Project`
  `getProject()`
  Returns the project to which this component belongs.
  `void`
  `log(String msg)`
  Logs a message with the default (INFO) priority.
  `void`
  `log(String msg, int msgLevel)`
  Logs a message with the given priority.
  `void`
  `setDescription(String desc)`
  Sets a description of the current action.
  `void`
  `setLocation(Location location)`
  Sets the file/location where this task was defined.
  `void`
  `setProject(Project project)`
  Sets the project object of this component.

  ### Methods inherited from class Object

  `finalize, getClass, notify, notifyAll, wait, wait, wait`

  ### Methods inherited from interface Iterable

  `forEach, spliterator`

  ### Methods inherited from interface ResourceCollection

  `isEmpty, stream`
  Modifier and Type
  Method
  Description
  `default boolean`
  `isEmpty()`
  Learn whether this `ResourceCollection` is empty.
  `default Stream<? extends Resource>`
  `stream()`
  Return a `Stream` over this `ResourceCollection`.

- ## Constructor Details

  - ### TarResource

    public TarResource()
    Default constructor.

  - ### TarResource

    public TarResource(File a, TarEntry e)
    Construct a TarResource representing the specified entry in the specified archive.
    Parameters:
      `a` - the archive as File.
      `e` - the TarEntry.

  - ### TarResource

    public TarResource(Resource a, TarEntry e)
    Construct a TarResource representing the specified entry in the specified archive.
    Parameters:
      `a` - the archive as Resource.
      `e` - the TarEntry.

- ## Method Details

  - ### getInputStream

    public InputStream getInputStream() throws IOException
    Return an InputStream for reading the contents of this Resource.
    Overrides:
      `getInputStream` in class `Resource`
    Returns:
      an InputStream object.
    Throws:
      `IOException` - if the tar file cannot be opened, or the entry cannot be read.

  - ### getOutputStream

    public OutputStream getOutputStream() throws IOException
    Get an OutputStream for the Resource.
    Overrides:
      `getOutputStream` in class `Resource`
    Returns:
      an OutputStream to which content can be written.
    Throws:
      `IOException` - if unable to provide the content of this Resource as a stream.
      `UnsupportedOperationException` - if OutputStreams are not supported for this Resource type.

  - ### getUserName

    public String getUserName()
    Returns:
      the user name for the tar entry

  - ### getGroup

    public String getGroup()
    Returns:
      the group name for the tar entry

  - ### getLongUid

    public long getLongUid()
    Returns:
      the uid for the tar entry
    Since:
      1.10.4

  - ### getUid

    @Deprecated public int getUid()
    Deprecated.
    Returns:
      the uid for the tar entry

  - ### getLongGid

    public long getLongGid()
    Returns:
      the gid for the tar entry
    Since:
      1.10.4

  - ### getGid

    @Deprecated public int getGid()
    Deprecated.
    Returns:
      the uid for the tar entry

  - ### getLinkName

    public String getLinkName()
    Returns:
      the link "name" (=path) of this entry; an empty string if this is no link
    Since:
      1.10.12

  - ### getLinkFlag

    public byte getLinkFlag()
    Returns:
      the link "flag" (=type) of this entry
    Since:
      1.10.12

  - ### fetchEntry

    protected void fetchEntry()
    fetches information from the named entry inside the archive.
    Specified by:
      `fetchEntry` in class `ArchiveResource`

  - ### getRef

    protected TarResource getRef()
    Description copied from class: `Resource`
    Perform the check for circular references and return the referenced Resource.
    Overrides:
      `getRef` in class `ArchiveResource`
    Returns:
      `Resource`.