OcciRequest.java

package be.edmonds.occi;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CharStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.RecognitionException;
import org.json.JSONException;
import org.json.JSONObject;

public class OcciRequest {

	private static final String ACTIONS = "actions";
	private static final String ATTRIBUTES = "attributes";
	private static final String LOCATION = "location";
	private static final String REL = "rel";
	private static final String TITLE = "title";
	private static final String CLASS = "class";
	private static final String SCHEME = "scheme";
	private static final String TERM = "term";
	private static final String CATEGORY = "category";

	public static void main(String[] args) throws RecognitionException{

		String occiCatHeader = "Category: " +
									"myterm; " +
									"scheme=\"http://myscheme\"; " +
									"class=\"mixin\"; " +
									"title=\"Mytitle\"; " +
									"rel=\"itisrel\"; " +
									"location=\"backyard\"; " +
									"attributes=\"attr.one attr.two attr.three\"; " +
									"actions=\"http://action http://action\", "+
									"myterm; " +
									"scheme=\"http://myscheme\"; " +
									"class=\"mixin\"; " +
									"title=\"Mytitle\"; " +
									"rel=\"itisrel\"; " +
									"location=\"backyard\"; " +
									"attributes=\"attr.one attr.two attr.three\"; " +
									"actions=\"http://action http://action\"\n";
		String occiLinkHeader = "Link: " +
									"</home/andy>; " +
									"rel=\"tosomething\"; " +
									"self=\"andy\"; " +
									"category=\"yo\"; " +
									"int.attr=12; " +
									"str.attr=\"weeeee\", " +
									"</home/andy>; " +
									"rel=\"tosomething\"; " +
									"self=\"andy\"; " +
									"category=\"yo\"; " +
									"int.attr=12; " +
									"str.attr=\"weeeee\"\n";
		String occiAttributeHeader = "X-OCCI-Attribute: occi.computearchitechture=\"test\", another.me=12\n";
		String occiLocationHeader = "X-OCCI-Location: http://hey, http://way\n";

		String occiRequest = occiCatHeader + occiLinkHeader + occiAttributeHeader + occiLocationHeader;
		System.out.println("Will parse:\n" + occiRequest + "\n");
		occi_http_textParser parser = getParser(occiRequest);
		String json = parser.occi_request();

		if(parser.getNumberOfSyntaxErrors() == 0){

			System.out.println("Generated intermediatry JSON representation:");
			System.out.println("\t"+json+"\n");

			System.out.println("Now parsing and extracting values with JSON parser:");
			try {

				JSONObject o = new JSONObject(json);

				System.out.println("\tterm: \t\t" + o.getJSONObject(CATEGORY).getString(TERM));
				System.out.println("\tscheme: \t" + o.getJSONObject(CATEGORY).getString(SCHEME));
				System.out.println("\tclass: \t\t" + o.getJSONObject(CATEGORY).getString(CLASS));
				System.out.println("\ttitle: \t\t" + o.getJSONObject(CATEGORY).getString(TITLE));
				System.out.println("\trel: \t\t" + o.getJSONObject(CATEGORY).getString(REL));
				System.out.println("\tlocation: \t" + o.getJSONObject(CATEGORY).getString(LOCATION));
				System.out.println("\tattributes: \t" + o.getJSONObject(CATEGORY).getString(ATTRIBUTES));
				System.out.println("\tactions: \t" + o.getJSONObject(CATEGORY).getString(ACTIONS));

			} catch (JSONException e) {
				e.printStackTrace();
			}
		}
		else{
			System.out.println("Failed to parse the text representation.");
		}
	}

	private static occi_http_textParser getParser(String occiCatHeader) {

		CharStream stream = new ANTLRStringStream(occiCatHeader);
		occi_http_textLexer lexer = new occi_http_textLexer(stream);
		CommonTokenStream tokenStream = new CommonTokenStream(lexer);
		occi_http_textParser parser = new occi_http_textParser(tokenStream);
		return parser;
	}
}