EnumeratedAttribute (Apache Ant API)

Package org.apache.tools.ant.types

## Class EnumeratedAttribute

- java.lang.Object
- - org.apache.tools.ant.types.EnumeratedAttribute

- Direct Known Subclasses:
    `AggregateTransformer.Format`, `Arc.ArcType`, `Available.FileDir`, `CharSet`, `Checksum.FormatElement`, `Comparison`, `Definer.Format`, `Definer.OnError`, `EchoProperties.FormatAttribute`, `EchoXML.NamespacePolicy`, `EjbJar.CMPVersion`, `EjbJar.NamingScheme`, `EmailTask.Encoding`, `ExecuteOn.FileDirBoth`, `FilterSet.OnMissing`, `FixCRLF.AddAsisRemove`, `FixCRLF.CrLf`, `FixCrLfFilter.AddAsisRemove`, `FixCrLfFilter.CrLf`, `FormatterElement.TypeAttribute`, `FTP.Action`, `FTP.FTPSystemType`, `FTP.Granularity`, `FTP.LanguageCode`, `FTPTask.Action`, `FTPTask.FTPSystemType`, `FTPTask.Granularity`, `ImageIOTask.ImageFormat`, `Input.HandlerType`, `IsLastModified.CompareMode`, `Jar.FilesetManifestConfig`, `Jar.StrictMode`, `Javadoc.AccessType`, `JDependTask.FormatAttribute`, `Jmod.ResolutionWarningReason`, `JUnitTask.ForkMode`, `JUnitTask.SummaryAttribute`, `Length.FileMode`, `Link.CompressionLevel`, `Link.Endianness`, `Link.VMType`, `ListenerDefinition.ListenerType`, `LogLevel`, `ManifestTask.Mode`, `Mapper.MapperType`, `ModifiedSelector.AlgorithmName`, `ModifiedSelector.CacheName`, `ModifiedSelector.ComparatorName`, `MSVSS.CurrentModUpdated`, `MSVSS.WritableFiles`, `MSVSSHISTORY.BriefCodediffNofile`, `NetRexxC.TraceAttr`, `NetRexxC.VerboseAttr`, `PathConvert.TargetOs`, `PresentSelector.FilePresence`, `PropertyFile.Entry.Operation`, `PropertyFile.Entry.Type`, `PropertyFile.Unit`, `PropertySet.BuiltinPropertySetName`, `Quantifier`, `Recorder.ActionChoices`, `Scale.ProportionsAttribute`, `Scale.ProportionsAttribute`, `SizeSelector.ByteUnits`, `SQLExec.DelimiterType`, `SQLExec.OnError`, `Tar.TarCompressionMethod`, `Tar.TarLongFileMode`, `TimeComparison`, `Tstamp.Unit`, `Type.FileDir`, `TypeSelector.FileType`, `Untar.UntarCompressionMethod`, `WaitFor.Unit`, `Zip.Duplicate`, `Zip.UnicodeExtraField`, `Zip.WhenEmpty`, `Zip.Zip64ModeAttribute`

      public abstract class EnumeratedAttribute
      extends java.lang.Object

  Helper class for attributes that can only take one of a fixed list of values.

  See `FixCRLF` for an example.

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `protected java.lang.String` | `value` | The selected value in this enumeration.

  - ### Constructor Summary

    Constructors
    Modifier | Constructor | Description
    --- | --- | ---
    `protected` | `EnumeratedAttribute()` | bean constructor

  - ### Method Summary

    All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `boolean` | `containsValue​(java.lang.String value)` | Is this value included in the enumeration?
    `int` | `getIndex()` |
    `static EnumeratedAttribute` | `getInstance​(java.lang.Class<? extends EnumeratedAttribute> clazz, java.lang.String value)` | Factory method for instantiating EAs via API in a more developer friendly way.
    `java.lang.String` | `getValue()` |
    `abstract java.lang.String[]` | `getValues()` | This is the only method a subclass needs to implement.
    `int` | `indexOfValue​(java.lang.String value)` | get the index of a value in this enumeration.
    `void` | `setValue​(java.lang.String value)` | Invoked by `IntrospectionHelper`.
    `java.lang.String` | `toString()` | Convert the value to its string form.

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### value

          protected java.lang.String value

      The selected value in this enumeration.

  - ### Constructor Detail

    - #### EnumeratedAttribute

          protected EnumeratedAttribute()

      bean constructor

  - ### Method Detail

    - #### getValues

          public abstract java.lang.String[] getValues()

      This is the only method a subclass needs to implement.
      Returns:
        an array holding all possible values of the enumeration. The order of elements must be fixed so that `indexOfValue(String)` always return the same index for the same value.

    - #### getInstance

          public static EnumeratedAttribute getInstance​(java.lang.Class<? extends EnumeratedAttribute> clazz,
                                                        java.lang.String value)
                                                 throws BuildException

      Factory method for instantiating EAs via API in a more developer friendly way.
      Parameters:
        `clazz` - Class, extending EA, which to instantiate
        `value` - The value to set on that EA
      Returns:
        Configured EA
      Throws:
        `BuildException` - If the class could not be found or the value is not valid for the given EA-class.
      See Also:
        https://issues.apache.org/bugzilla/show_bug.cgi?id=14831

    - #### setValue

          public void setValue​(java.lang.String value)
                        throws BuildException

      Invoked by `IntrospectionHelper`.
      Parameters:
        `value` - the `String` value of the attribute
      Throws:
        `BuildException` - if the value is not valid for the attribute

    - #### containsValue

          public final boolean containsValue​(java.lang.String value)

      Is this value included in the enumeration?
      Parameters:
        `value` - the `String` value to look up
      Returns:
        true if the value is valid

    - #### indexOfValue

          public final int indexOfValue​(java.lang.String value)

      get the index of a value in this enumeration.
      Parameters:
        `value` - the string value to look for.
      Returns:
        the index of the value in the array of strings or -1 if it cannot be found.
      See Also:
        `getValues()`

    - #### getValue

          public final java.lang.String getValue()

      Returns:
        the selected value.

    - #### getIndex

          public final int getIndex()

      Returns:
        the index of the selected value in the array.
      See Also:
        `getValues()`

    - #### toString

          public java.lang.String toString()

      Convert the value to its string form.
      Overrides:
        `toString` in class `java.lang.Object`
      Returns:
        the string form of the value.