contextobjectgenerator.java

一个基于sensor的中间件

package Utopia;

//~--- JDK imports ------------------------------------------------------------
import java.io.*;

import java.util.*;

public class ContextObjectGenerator {

    OntologyEventProvider eventProvider = new OntologyEventProvider();
    String queryRule[];
    String rule[];

    /**
     * This class is used to interpretion.
     */
    public ContextObjectGenerator() {
    }

    /**
     * should give an example of query
     * @param query need to explain what kind of query
     * @param cs ConThread
     * @return
     */
    public boolean ContextObjectGenerator(String query, ConThread cs) {
        StringTokenizer stringToken = new StringTokenizer(query, " ");    // 锟斤拷锟桔凤拷 锟斤拷锟铰筹拷锟斤拷; 锟斤拷锟斤拷 锟斤拷锟斤拷锟斤拷 stringToken锟斤拷 锟斤拷锟斤拷锟窖达拷.
        int tokenCount = stringToken.countTokens();

        queryRule = new String[tokenCount];

        int i = 0;
        int andCount = 0;

        while (stringToken.hasMoreTokens()) {
            queryRule[i] = stringToken.nextToken();

            if (queryRule[i].equals("and")) {
                andCount++;
            }

            i++;
        }

        i = 3;

        int returncount = 0;

        rule = new String[andCount + 1];

        for (int k = 0; k <= andCount; k++) {
            stringToken = new StringTokenizer(queryRule[i], ":(");
            i = i + 2;

            int j = 0;

            while (stringToken.hasMoreTokens()) {
                if (j == 1) {
                    eventProvider.OntologyEventProvider(stringToken.nextToken(), cs, query);

//                  System.out.println(stringToken.nextToken());
                    returncount++;

                    break;
                } else {
                    stringToken.nextToken();
                }

                j++;
            }
        }

        if (returncount == andCount + 1) {
            return true;
        } else {
            return false;
        }
    }
}


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