Class Node

java.lang.Object
org.yaml.snakeyaml.nodes.Node
Direct Known Subclasses:
AnchorNode, CollectionNode, ScalarNode

public abstract class Node extends Object
Base class for all nodes.

The nodes form the node-graph described in the YAML Specification.

While loading, the node graph is usually created by the Composer, and later transformed into application specific Java classes by the classes from the org.yaml.snakeyaml.constructor package.

  • Field Details

    • tag

      private Tag tag
    • startMark

      private Mark startMark
    • endMark

      protected Mark endMark
    • type

      private Class<? extends Object> type
    • twoStepsConstruction

      private boolean twoStepsConstruction
    • anchor

      private String anchor
    • resolved

      protected boolean resolved
      true when the tag is assigned by the resolver
    • useClassConstructor

      protected Boolean useClassConstructor
  • Constructor Details

    • Node

      public Node(Tag tag, Mark startMark, Mark endMark)
  • Method Details

    • getTag

      public Tag getTag()
      Tag of this node.

      Every node has a tag assigned. The tag is either local or global.

      Returns:
      Tag of this node.
    • getEndMark

      public Mark getEndMark()
    • getNodeId

      public abstract NodeId getNodeId()
      For error reporting.
      Returns:
      scalar, sequence, mapping
      See Also:
      • "class variable 'id' in PyYAML"
    • getStartMark

      public Mark getStartMark()
    • setTag

      public void setTag(Tag tag)
    • equals

      public final boolean equals(Object obj)
      Node is only equal to itself
      Overrides:
      equals in class Object
    • getType

      public Class<? extends Object> getType()
    • setType

      public void setType(Class<? extends Object> type)
    • setTwoStepsConstruction

      public void setTwoStepsConstruction(boolean twoStepsConstruction)
    • isTwoStepsConstruction

      public boolean isTwoStepsConstruction()
      Indicates if this node must be constructed in two steps.

      Two-step construction is required whenever a node is a child (direct or indirect) of it self. That is, if a recursive structure is build using anchors and aliases.

      Set by Composer, used during the construction process.

      Only relevant during loading.

      Returns:
      true if the node is self referenced.
    • hashCode

      public final int hashCode()
      Overrides:
      hashCode in class Object
    • useClassConstructor

      public boolean useClassConstructor()
    • setUseClassConstructor

      public void setUseClassConstructor(Boolean useClassConstructor)
    • isResolved

      @Deprecated public boolean isResolved()
      Deprecated.
      Since v1.22. Absent in immediately prior versions, but present previously. Restored deprecated for backwards compatibility.
      Indicates if the tag was added by Resolver.
      Returns:
      true if the tag of this node was resolved
    • getAnchor

      public String getAnchor()
    • setAnchor

      public void setAnchor(String anchor)