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6.3 A Front End to Various Search Engines

139

Listing 6.2 SearchSpec.java 

package coreservlets;

/** Small class that encapsulates how to construct a

 *  search string for a particular search engine.

 */

class SearchSpec {

  private String name, baseURL, numResultsSuffix;

  private static SearchSpec[] commonSpecs =

    { new SearchSpec("google",

                     "http://www.google.com/search?q=",

                     "&num="),

      new SearchSpec("infoseek",

                     "http://infoseek.go.com/Titles?qt=",

                     "&nh="),

      new SearchSpec("lycos",

                     "http://lycospro.lycos.com/cgi bin/" +

                        "pursuit?query=",

                     "&maxhits="),

      new SearchSpec("hotbot",

                     "http://www.hotbot.com/?MT=",

                     "&DC=")

    };

  public SearchSpec(String name,

                    String baseURL,

                    String numResultsSuffix) {

    this.name = name;

    this.baseURL = baseURL;

    this.numResultsSuffix = numResultsSuffix;

  }

  public String makeURL(String searchString,

                        String numResults) {

    return(baseURL + searchString +

           numResultsSuffix + numResults);

  }

  public String getName() {

    return(name);

  }

  public static SearchSpec[] getCommonSpecs() {

    return(commonSpecs);

  }

}

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