All Known Subinterfaces:

Path.BeanNode, Path.ConstructorNode, Path.CrossParameterNode, Path.MethodNode, Path.ParameterNode, Path.PropertyNode, Path.ReturnValueNode

Enclosing interface:

Path

public static interface Path.Node

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  <T extends Path.Node> T	as (Class<T> nodeType) Narrows the type of this node down to the given type.
  Integer	getIndex ()
  Object	getKey ()
  ElementKind	getKind () The kind of element represented by the node.
  String	getName () Returns the name of the element which the node represents: null if it is a leaf node which represents an entity / bean.
  boolean	isInIterable ()

• Method Detail

  • getName

    String getName()

    Returns the name of the element which the node represents:

    • null if it is a leaf node which represents an entity / bean. In particular, the node representing the root object.
    • The property name for a property.
    • The method name for a method.
    • The unqualified name of the type declaring the constructor for a constructor.
    • The parameter named as defined by the ParameterNameProvider for a method or constructor parameter.
    • The literal <cross-parameter> for a method or constructor cross-parameter.
    • The literal <return value> for a method or constructor return value.

    Returns:

    name of the element which the node represents

  • isInIterable

    boolean isInIterable()

    Returns:

    true if the node represents an object contained in an Iterable or in a Map, false otherwise

  • getIndex

    Integer getIndex()

    Returns:

    the index the node is placed in if contained in an array or List; null otherwise

  • getKey

    Object getKey()

    Returns:

    the key the node is placed in if contained in a Map, null otherwise

  • getKind

    ElementKind getKind()

    The kind of element represented by the node. The following relationship between an ElementKind and its Node subtype exists:

    • ElementKind.BEAN: Path.BeanNode
    • ElementKind.PROPERTY: Path.PropertyNode
    • ElementKind.METHOD: Path.MethodNode
    • ElementKind.CONSTRUCTOR: Path.ConstructorNode
    • ElementKind.PARAMETER: Path.ParameterNode
    • ElementKind.CROSS_PARAMETER: Path.CrossParameterNode
    • ElementKind.RETURN_VALUE: Path.ReturnValueNode

    This is useful to narrow down the Node type and access node specific information:

     switch(node.getKind() {
     case METHOD:
     name = node.getName();
     params = node.as(MethodNode.class).getParameterTypes();
     case PARAMETER:
     index = node.as(ParameterNode.class).getParameterIndex();
     [...]
     }
     

    Returns:

    the ElementKind

    Since:

    1.1

  • as

    <T extends Path.Node> T as(Class<T> nodeType)

    Narrows the type of this node down to the given type. The appropriate type should be checked before by calling getKind().

    Type Parameters:

    T - the type to narrow down to

    Parameters:

    nodeType - class object representing the descriptor type to narrow down to to

    Returns:

    this node narrowed down to the given type.

    Throws:

    ClassCastException - If this node is not assignable to the type T

    Since:

    1.1