org.apache.activemq.artemis.selector.filter

## Class UnaryExpression

- java.lang.Object
- - org.apache.activemq.artemis.selector.filter.UnaryExpression

- All Implemented Interfaces:
    Expression

      public abstract class UnaryExpression
      extends Object
      implements Expression

  An expression which performs an operation on two expression values
  Version:
    $Revision: 1.3 $

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected Expression` | `right`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `UnaryExpression(Expression left)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static BooleanExpression` | `createBooleanCast(Expression left)`
    `static BooleanExpression` | `createInExpression(PropertyExpression right, List<Object> elements, boolean not)`
    `static Expression` | `createNegate(Expression left)`
    `static BooleanExpression` | `createNOT(BooleanExpression left)`
    `static BooleanExpression` | `createXPath(String xpath)`
    `static BooleanExpression` | `createXQuery(String xpath)`
    `boolean` | `equals(Object o)`
    `abstract String` | `getExpressionSymbol()` Returns the symbol that represents this binary expression.
    `Expression` | `getRight()`
    `int` | `hashCode()`
    `void` | `setRight(Expression expression)`
    `String` | `toString()`

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

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

    - ### Methods inherited from interface org.apache.activemq.artemis.selector.filter.Expression

      `evaluate`

- - ### Field Detail

    - #### right

          protected Expression right

  - ### Constructor Detail

    - #### UnaryExpression

          public UnaryExpression(Expression left)

  - ### Method Detail

    - #### createNegate

          public static Expression createNegate(Expression left)

    - #### createInExpression

          public static BooleanExpression createInExpression(PropertyExpression right,
                                                             List<Object> elements,
                                                             boolean not)

    - #### createNOT

          public static BooleanExpression createNOT(BooleanExpression left)

    - #### createXPath

          public static BooleanExpression createXPath(String xpath)

    - #### createXQuery

          public static BooleanExpression createXQuery(String xpath)

    - #### createBooleanCast

          public static BooleanExpression createBooleanCast(Expression left)

    - #### getRight

          public Expression getRight()

    - #### setRight

          public void setRight(Expression expression)

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`
      See Also:
        `Object.toString()`

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `Object`
      See Also:
        `Object.hashCode()`

    - #### equals

          public boolean equals(Object o)

      Overrides:
        `equals` in class `Object`
      See Also:
        `Object.equals(java.lang.Object)`

    - #### getExpressionSymbol

          public abstract String getExpressionSymbol()

      Returns the symbol that represents this binary expression. For example, addition is represented by "+"
      Returns:

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