org.modeshape.jcr.query.model

## Class PropertyExistence

- java.lang.Object
- - org.modeshape.jcr.query.model.PropertyExistence

- All Implemented Interfaces:
    Serializable, Constraint, PropertyExistence, LanguageObject, Visitable

      @Immutable
      public class PropertyExistence
      extends Object
      implements Constraint, PropertyExistence

  A constraint that evaluates to true only when a named property exists on a node.
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `PropertyExistence(SelectorName selectorName, String propertyName)` Create a constraint requiring that a property exist on a node.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `accept(Visitor visitor)` Accept the supplied visitor, which should call back to the visitor to complete the double-dispatch operation.
    `boolean` | `equals(Object obj)`
    `String` | `getPropertyName()`
    `String` | `getSelectorName()`
    `int` | `hashCode()`
    `SelectorName` | `selectorName()` Get the name of the selector.
    `String` | `toString()`

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

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

- - ### Constructor Detail

    - #### PropertyExistence

          public PropertyExistence(SelectorName selectorName,
                           String propertyName)

      Create a constraint requiring that a property exist on a node.
      Parameters:
        `selectorName` - the name of the node selector
        `propertyName` - the name of the property that must exist

  - ### Method Detail

    - #### selectorName

          public final SelectorName selectorName()

      Get the name of the selector.
      Returns:
        the selector name; never null

    - #### getSelectorName

          public String getSelectorName()

      Specified by:
        `getSelectorName` in interface `PropertyExistence`

    - #### getPropertyName

          public final String getPropertyName()

      Specified by:
        `getPropertyName` in interface `PropertyExistence`

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `Object`

    - #### equals

          public boolean equals(Object obj)

      Overrides:
        `equals` in class `Object`

    - #### accept

          public void accept(Visitor visitor)

      Description copied from interface: `Visitable`
      Accept the supplied visitor, which should call back to the visitor to complete the double-dispatch operation.
      Specified by:
        `accept` in interface `Visitable`
      Parameters:
        `visitor` - the visitor; never null

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