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## org.springframework.aop.support
Class AbstractExpressionPointcut

    java.lang.Object
      org.springframework.aop.support.AbstractExpressionPointcut

All Implemented Interfaces:
  Serializable, Pointcut, ExpressionPointcut

Direct Known Subclasses:
  AspectJExpressionPointcut

    public abstract class AbstractExpressionPointcut

extends Object
implements ExpressionPointcut, Serializable

Abstract superclass for expression pointcuts, offering location and expression properties.

Since:
  2.0
Author:
  Rod Johnson, Rob Harrop
See Also:
  `setLocation(java.lang.String)`, `setExpression(java.lang.String)`, Serialized Form

Field Summary

Fields inherited from interface org.springframework.aop.Pointcut
`TRUE`

Constructor Summary
`AbstractExpressionPointcut()`

Method Summary
`String` | `getExpression()` Return this pointcut's expression.
`String` | `getLocation()` Return location information about the pointcut expression if available.
`protected void` | `onSetExpression(String expression)` Called when a new pointcut expression is set.
`void` | `setExpression(String expression)`
`void` | `setLocation(String location)` Set the location for debugging.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.springframework.aop.Pointcut
`getClassFilter, getMethodMatcher`

Constructor Detail

### AbstractExpressionPointcut

    public AbstractExpressionPointcut()

Method Detail

### setLocation

    public void setLocation(String location)

  Set the location for debugging.

### getLocation

    public String getLocation()

  Return location information about the pointcut expression if available. This is useful in debugging.

  Returns:
    location information as a human-readable String, or `null` if none is available

### setExpression

    public void setExpression(String expression)

### onSetExpression

    protected void onSetExpression(String expression)
                            throws IllegalArgumentException

  Called when a new pointcut expression is set. The expression should be parsed at this point if possible.

  This implementation is empty.

  Parameters:
    `expression` - expression to set
  Throws:
    `IllegalArgumentException` - if the expression is invalid
  See Also:
    `setExpression(java.lang.String)`

### getExpression

    public String getExpression()

  Return this pointcut's expression.

  Specified by:
    `getExpression` in interface `ExpressionPointcut`

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