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
`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
`Substitution()` Constructor for Substitution.

### Method Summary

All Methods Instance Methods Concrete Methods
`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