Module org.apache.jena.arq
Package org.apache.jena.riot.system

Class SyntaxLabels

java.lang.Object
org.apache.jena.riot.system.SyntaxLabels
public class SyntaxLabels extends Object
Factory for default policies for syntax labels to and from nodes. For label to node (parsing) we use a scalable hashing scheme (MD5 of a seed and the label)

For node to label (pretty labels output), we use a unique tracking scheme. Fully scalable writers use different polices and don't have short, pretty bNode labels.

These should be used pairs: 

     createNodeToLabel , createLabelToNode
     createNodeToLabelRT , createLabelToNodeRT
     createNodeToLabelAsGiven , createLabelToNodeAsGiven
"AsGiven" assumes that the label is valid syntax for the usage, no checking.
"RT" encodes the label into characters 0-9,A-Z.
See Also:

  • Constructor Details

    • SyntaxLabels

      public SyntaxLabels()

  • Method Details

    • createNodeToLabel

      public static NodeToLabel createNodeToLabel()
      Default setup - scope by document, relabel BNodes ids to short forms

    • createLabelToNode

      public static LabelToNode createLabelToNode()
      Default setup - scope by document, relabel BNodes ids to short forms

    • createNodeToLabelRT

      public static NodeToLabel createNodeToLabelRT()
      Round-trip setup

    • createLabelToNodeRT

      public static LabelToNode createLabelToNodeRT()
      Round-trip setup

    • createNodeToLabelAsGiven

      public static NodeToLabel createNodeToLabelAsGiven()
      Raw string label setup

    • createLabelToNodeAsGiven

      public static LabelToNode createLabelToNodeAsGiven()
      Raw string label setup