OWLThing.java

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package edu.tum.cs.ias.knowrob.owl;

import java.util.Hashtable;
import java.util.Random;

public class OWLThing implements Comparable<OWLThing> {
        
        
        protected static Hashtable<String, OWLThing> identifiers = new Hashtable<String, OWLThing>();
        
        protected String iri;
        
        protected String label;
        
        protected boolean readFromProlog = false;


        protected boolean saveToProlog = false;
        
        
        
        public static OWLThing getOWLThing(String iri, String label) {
                
                if(identifiers.containsKey(iri)) {

                        if(identifiers.get(iri).label != label)
                                identifiers.get(iri).setLabel(label);
                        
                        return identifiers.get(iri);
                        
                } else {
                        OWLThing res = new OWLThing(iri, label);
                        identifiers.put(iri, res);                      
                        return res;
                }
        }
        
        
        protected OWLThing(String iri, String label) {
                
                this.iri = iri;
                
                if(label!=null)
                        this.label = label;
                else 
                        this.label = getShortName();

        }
        
        
        public static OWLThing getOWLThingByShortname(String shortname) {
                
                for(String iri : identifiers.keySet()) {
                        if(iri.endsWith(shortname)) {
                                return identifiers.get(iri);
                        }
                }
                return null;
        }

        public static void removeOWLThing(String iri) {
                identifiers.remove(iri);
        }
        
        
        public String getIRI() {
                return iri;
        }

        
        public void setIri(String iri) {
                this.iri = iri;
        }

        public String getLabel() {
                return label;
        }
        
        public void setLabel(String label) {
                this.label = label;
        }
        
        
        public String getIRIPrefix(){
                return getPrefixOfIRI(iri);
        }



        public String getShortName(){ // name after hash sign
                return getShortNameOfIRI(iri);
        }
        
        
        public String getIRIFilename(){ // after last '/', before hash
                return getFilenameOfIRI(iri);
        }
        


        @Override
        public int compareTo(OWLThing o) {
                return this.iri.compareTo(o.getIRI());
        }
        
        
        public boolean equals(Object b) {
                if (b instanceof OWLThing) {
                        if(this.iri.equals(((OWLThing) b).getIRI()))
                                return true;
                        else
                                return false;
                }
                return false;
        }
        
        @Override
        public String toString() {
                return this.iri;
        }
        
        
    public static String removeSingleQuotes(String str) {
        if(str.startsWith("'"))
            str = str.substring(1);
        
        if(str.endsWith("'"))
            str = str.substring(0, str.length()-1);
        return str;
    }
    

    public static String addSingleQuotes(String str) {
        return "'"+removeSingleQuotes(str)+"'";
    }
    

    public static String getShortNameOfIRI(String iri) {

        String[] elem = iri.split("#");
        if(elem.length>1) {
                String res = elem[1].replaceAll("'", "");
                return res;
        }
        else return iri;
    }
        

        public static String getPrefixOfIRI(String iri) {
                
        String[] elem = iri.split("#");
        if(elem.length>1) {
            String res = elem[0].replaceAll("'", "");
            return res;
        }
        else return iri;
        }

        public static String getFilenameOfIRI(String iri) {
                
        String[] elem = iri.split("/");
        if(elem.length>1) {
                
            String after_slash = elem[elem.length-1].replaceAll("'", "");
            String[] elem2 = after_slash.split("#");
            
            if(elem2.length>1) {
                String res = elem2[0];
                return res;
            }
            else return after_slash;
        }
        else return iri;
        }

        public static String getUniqueID(String iri) {
                
                char[] chars = "abcdefghijklmnopqrstuvwxyzABSDEFGHIJKLMNOPQRSTUVWXYZ1234567890".toCharArray();
                Random r = new Random(System.currentTimeMillis());
                char[] id = new char[8];
                for (int i = 0;  i < 8;  i++) {
                    id[i] = chars[r.nextInt(chars.length)];
                }
                try { Thread.sleep(5); } catch (InterruptedException e) {
                        e.printStackTrace();
                }
                return iri + "_" + new String(id);
        } 
        
        public boolean isReadFromProlog() {
                return readFromProlog;
        }


        public void setReadFromProlog(boolean readFromProlog) {
                this.readFromProlog = readFromProlog;
        }


        public boolean needsSaveToProlog() {
                return saveToProlog;
        }


        public void setSaveToProlog(boolean saveToProlog) {
                this.saveToProlog = saveToProlog;
        }
        
}