PrologBindings.java

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/* 
 * Copyright (c) 2010, Moritz Tenorth
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

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

import java.util.HashMap;
import java.util.Vector;

import jpl.Term;

import edu.tum.cs.ias.knowrob.json_prolog.JSONQuery.InvalidJSONQuery;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.util.JSONUtils;


public class PrologBindings {

        
        private HashMap<String, PrologValue> bdgs_;
        

        public PrologBindings() {
                bdgs_ = new HashMap<String, PrologValue>();
        }
        
        static public PrologBindings parseJSONBindings(String json_bdgs) {
                
                PrologBindings res = new PrologBindings();              
                if(json_bdgs!=null) {

                        JSONObject json_obj = JSONObject.fromObject(json_bdgs);
                        for(Object k : json_obj.keySet()) {
                                
                                Object bdg = json_obj.get(k.toString());
                                
                                try {

                                        PrologValue r = new PrologValue();

                                        if(JSONUtils.isArray(bdg)) {
                                                
                                                Term[] objs = JSONQuery.decodeJSONArray(JSONArray.fromObject(bdg));
                                                
                                                Vector<PrologValue> values = new Vector<PrologValue>(); 
                                                for(Term o : objs) {
                                                        values.add(new PrologValue(o.toString()));
                                                }
                                                r = new PrologValue(values);

                                        } else if(JSONUtils.isObject(bdg)) {
                                                Term obj = JSONQuery.decodeJSONValue(JSONObject.fromObject(bdg));
                                                r = new PrologValue(obj.toString());
                                                
                                        } else if(JSONUtils.isString(bdg)) {
                                                r = new PrologValue(bdg.toString());
                                                
                                        } else if(JSONUtils.isNumber(bdg)) {
                                                r = new PrologValue(Double.valueOf(bdg.toString()));
                                                
                                        }
                                        res.bdgs_.put(k.toString(), r); 
                                        
                                } catch (InvalidJSONQuery e) {
                                        e.printStackTrace();
                                }
                                        
                        }
                        
                }
                return res;
        }


        public HashMap<String, PrologValue> getBdgs_() {
                return bdgs_;
        }


        public void setBdgs_(HashMap<String, PrologValue> bdgs) {
                bdgs_ = bdgs;
        }


        class VariableUnbound extends Exception {

                private static final long serialVersionUID = -5329179598962011281L;

                public VariableUnbound(String var_name) {
                        super(var_name);
                }
        };


        class JSONParseError extends Exception {

                private static final long serialVersionUID = 6704618653787680364L;

                public JSONParseError(String msg) {
                        super(msg);
                }
        };

        
}