Package org.apache.tools.ant.types

## Class Substitution

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

- All Implemented Interfaces:
    `java.lang.Cloneable`

      public class Substitution
      extends DataType

  A regular expression substitution datatype. It is an expression that is meant to replace a regular expression.

         <substitution [ [id="id"] expression="expression" | refid="id" ]
         />

  See Also:
    `Perl5Substitution`

- - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `static java.lang.String` | `DATA_TYPE_NAME` | The name of this data type

    - ### 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 | Description
    --- | ---
    `Substitution()` | Constructor for Substitution.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `java.lang.String` | `getExpression​(Project p)` | Gets the pattern string for this RegularExpression in the given project.
    `Substitution` | `getRef​(Project p)` | Get the RegularExpression this reference refers to in the given project.
    `void` | `setExpression​(java.lang.String expression)` | Set the pattern string for this regular expression substitution.

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

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

- - ### Field Detail

    - #### DATA_TYPE_NAME

          public static final java.lang.String DATA_TYPE_NAME

      The name of this data type
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### Substitution

          public Substitution()

      Constructor for Substitution.

  - ### Method Detail

    - #### setExpression

          public void setExpression​(java.lang.String expression)

      Set the pattern string for this regular expression substitution.
      Parameters:
        `expression` - the regular expression to use

    - #### getExpression

          public java.lang.String getExpression​(Project p)

      Gets the pattern string for this RegularExpression in the given project.
      Parameters:
        `p` - the project to look for the regular expression if this object is a reference
      Returns:
        the pattern string

    - #### getRef

          public Substitution getRef​(Project p)

      Get the RegularExpression this reference refers to in the given project. Check for circular references too.
      Parameters:
        `p` - the project to look for the regular expression reference
      Returns:
        the resolved reference