org.apache.tools.ant.types

## Class AntFilterReader

- java.lang.Object
- - org.apache.tools.ant.ProjectComponent
  - - org.apache.tools.ant.types.DataType
    - - org.apache.tools.ant.types.AntFilterReader

- All Implemented Interfaces:
    java.lang.Cloneable

      public final class AntFilterReader
      extends DataType

  An AntFilterReader is a wrapper class that encloses the classname and configuration of a Configurable FilterReader.

- - ### Field Summary

    - ### Fields inherited from class org.apache.tools.ant.types.DataType

      `checked, ref`

    - ### Fields inherited from class org.apache.tools.ant.ProjectComponent

      `description, location, project`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `AntFilterReader()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `addParam(Parameter param)` Add a Parameter.
    `Path` | `createClasspath()` Set the classpath to load the FilterReader through (nested element).
    `protected void` | `dieOnCircularReference(java.util.Stack<java.lang.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).
    `java.lang.String` | `getClassName()` Get the className attribute.
    `Path` | `getClasspath()` Get the classpath.
    `Parameter[]` | `getParams()` The parameters for this filter.
    `void` | `setClassName(java.lang.String className)` Set the className attribute.
    `void` | `setClasspath(Path classpath)` Set the classpath to load the FilterReader through (attribute).
    `void` | `setClasspathRef(Reference r)` Set the classpath to load the FilterReader through via reference (attribute).
    `void` | `setRefid(Reference r)` Makes this instance in effect a reference to another AntFilterReader instance.

    - ### Methods inherited from class org.apache.tools.ant.types.DataType

      `checkAttributesAllowed, checkChildrenAllowed, circularReference, clone, dieOnCircularReference, dieOnCircularReference, getCheckedRef, getCheckedRef, getCheckedRef, getCheckedRef, getDataTypeName, getRefid, invokeCircularReferenceCheck, isChecked, isReference, noChildrenAllowed, pushAndInvokeCircularReferenceCheck, setChecked, tooManyAttributes, toString`

    - ### Methods inherited from class org.apache.tools.ant.ProjectComponent

      `getDescription, getLocation, getProject, log, log, setDescription, setLocation, setProject`

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

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

- - ### Constructor Detail

    - #### AntFilterReader

          public AntFilterReader()

  - ### Method Detail

    - #### setClassName

          public void setClassName(java.lang.String className)

      Set the className attribute.
      Parameters:
        `className` - a `String` value

    - #### getClassName

          public java.lang.String getClassName()

      Get the className attribute.
      Returns:
        a `String` value

    - #### addParam

          public void addParam(Parameter param)

      Add a Parameter.
      Parameters:
        `param` - a `Parameter` value

    - #### setClasspath

          public void setClasspath(Path classpath)

      Set the classpath to load the FilterReader through (attribute).
      Parameters:
        `classpath` - a classpath

    - #### createClasspath

          public Path createClasspath()

      Set the classpath to load the FilterReader through (nested element).
      Returns:
        a classpath to be configured

    - #### getClasspath

          public Path getClasspath()

      Get the classpath.
      Returns:
        the classpath

    - #### setClasspathRef

          public void setClasspathRef(Reference r)

      Set the classpath to load the FilterReader through via reference (attribute).
      Parameters:
        `r` - a reference to a classpath

    - #### getParams

          public Parameter[] getParams()

      The parameters for this filter.
      Returns:
        a `Parameter[]` value

    - #### setRefid

          public void setRefid(Reference r)
                        throws BuildException

      Makes this instance in effect a reference to another AntFilterReader instance.

      You must not set another attribute or nest elements inside this element if you make it a reference.

      Overrides:
        `setRefid` in class `DataType`
      Parameters:
        `r` - the reference to which this instance is associated
      Throws:
        `BuildException` - if this instance already has been configured.

    - #### dieOnCircularReference

          protected void dieOnCircularReference(java.util.Stack<java.lang.Object> stk,
                                                Project p)
                                         throws BuildException

      Description copied from class: `DataType`
      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).

      If one is included, throw a BuildException created by `circularReference`.

      This implementation is appropriate only for a DataType that cannot hold other DataTypes as children.

      The general contract of this method is that it shouldn't do anything if `DataType.checked` is true and set it to true on exit.

      Overrides:
        `dieOnCircularReference` in class `DataType`
      Parameters:
        `stk` - the stack of references to check.
        `p` - the project to use to dereference the references.
      Throws:
        `BuildException` - on error.