Android Open Source - sodf Sodf Tree

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License

The source code is released under:

Copyright (c) 2013 Lorenz Lehmann Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Sof...

Java Source Code

package lal.sodf.framework.ontology;
//ww w  .j  a  v a 2 s.co m
import lal.sodf.framework.parser.SodfParser;

public class SodfTree {
  /** The root of the tree, i.e. the object itself */
  private KeyNode root;
  
  /**
   * Build a SODF description tree
   * @param serialization The textual representation of the tree
   */
  public SodfTree(String serialization){
    //generate a new tree and set this trees root to the generated trees root
    root = SodfParser.deserializeTree(serialization).getRoot();
  }
  
  /**
   * Creates an empty SODF tree with the properties, functions, and metadata children  
   */
  public SodfTree(){
    //create a node with no content and no parent as root
    root = new KeyNode("");
    root.addChild(new PropertiesNode(root));
    root.addChild(new FunctionsNode(root));
    root.addChild(new MetadataNode(root));
  }
  
  /** Return the root of this SODF tree, i.e. the realworld object */
  public KeyNode getRoot(){
    return root;
  }
  
  /** Set the root of the tree */
  public void setRoot(KeyNode kn){
    root = kn;
  }
  
  /**
   * Get the subtree that contains all the properties
   * @return The properties subtree or null if the subtree does not exist
   */
  public PropertiesNode getPropertiesSubtree(){
    for (Node n : root.getChildren()){
      if (n instanceof PropertiesNode) return (PropertiesNode) n;
    }
    //if the properties subtree was not found return null
    return null;
  }
  
  /**
   * Get the subtree that contains all the functions
   * @return The functions subtree or null if the subtree does not exist
   */
  public FunctionsNode getFunctionsSubtree(){
    for (Node n : root.getChildren()){
      if (n instanceof FunctionsNode) return (FunctionsNode) n;
    }
    //if the functions subtree was not found return null
    return null;
  }
  
  /**
   * Get the subtree that contains all the metadata
   * @return The metadata subtree or null if the subtree does not exist
   */
  public MetadataNode getMetadataSubtree(){
    for (Node n : root.getChildren()){
      if (n instanceof MetadataNode) return (MetadataNode) n;
    }
    //if the metadata subtree was not found return null
    return null;
  }
  
  /** Get the serialized version of the SODF ontology */
  public String getSerialization(){
    return SodfParser.serializeTree(this);
  }
}

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