불친절한자수씨

	private String realizePermutation(TreeLogger logger,
			Property[] currentProps, String[] currentValues, int permNumber)
			throws UnableToCompleteException {
		String msg = "Analyzing permutation #" + permNumber;
		logger = logger.branch(TreeLogger.TRACE, msg, null);

		logProperties(logger, currentProps, currentValues);

		// Create a rebind oracle that will record decisions so that we can
		// cache
		// them and avoid future computations.
		//
		CompilationRebindOracle rebindOracle = new CompilationRebindOracle();

		// Tell the property provider above about the current property values.
		// Note that the rebindOracle is actually sensitive to these values
		// because
		// in its ctor is uses propOracle as its property oracle.
		//
		propOracle.setPropertyValues(currentProps, currentValues);

		// Check to see if we already have this compilation.
		// This will have the effect of filling the rebind oracle's cache.
		//
		String[] entryPts = module.getEntryPointTypeNames();
		Compilation cached = compilations.find(logger, rebindOracle, entryPts);
		if (cached != null) {
			msg = "Matches existing compilation " + cached.getStrongName();
			logger.log(TreeLogger.TRACE, msg, null);
			return cached.getStrongName();
		}

		// Now attach a compilation into which we can record the particular
		// inputs
		// and outputs used by this compile process.
		//
		Compilation compilation = new Compilation();
		rebindOracle.recordInto(compilation);

		// Create JavaScript.
		//
		String js = jjs.compile(logger, rebindOracle);

		// Create a wrapper and an unambiguous name for the file.
		//
		String strongName = writeHtmlAndJsWithStrongName(logger, js);

		// Write out a cache control file that correlates to this script.
		//
		compilation.setStrongName(strongName);
		writeCacheFile(logger, compilation);

		// Add this compilation to the list of known compilations.
		//
		compilations.add(compilation);
		return compilation.getStrongName();
	}

	private String realizePermutation(TreeLogger logger,
			Property[] currentProps, String[] currentValues, int permNumber)
			throws UnableToCompleteException {
		String msg = "Analyzing permutation #" + permNumber;
		logger = logger.branch(TreeLogger.TRACE, msg, null);

		logProperties(logger, currentProps, currentValues);

		// Create a rebind oracle that will record decisions so that we can
		// cache
		// them and avoid future computations.
		//
		CompilationRebindOracle rebindOracle = new CompilationRebindOracle();

		// Tell the property provider above about the current property values.
		// Note that the rebindOracle is actually sensitive to these values
		// because
		// in its ctor is uses propOracle as its property oracle.
		//
		propOracle.setPropertyValues(currentProps, currentValues);

		// Check to see if we already have this compilation.
		// This will have the effect of filling the rebind oracle's cache.
		//
		String[] entryPts = module.getEntryPointTypeNames();
		Compilation cached = compilations.find(logger, rebindOracle, entryPts);
		if (cached != null) {
			msg = "Matches existing compilation " + cached.getStrongName();
			logger.log(TreeLogger.TRACE, msg, null);
			return cached.getStrongName();
		}

		// Now attach a compilation into which we can record the particular
		// inputs
		// and outputs used by this compile process.
		//
		Compilation compilation = new Compilation();
		rebindOracle.recordInto(compilation);

		// Create JavaScript.
		//
		String js = jjs.compile(logger, rebindOracle);

		String entryPointName = entryPts[0].substring(entryPts[0]
				.lastIndexOf(".") + 1);
		String name = entryPointName + "_" + currentValues[2] + "_"
				+ currentValues[3];

		String strongName = writeHtmlAndJsWithStrongName(logger, js, name);

		compilation.setStrongName(strongName);
		writeCacheFile(logger, compilation);

		// Add this compilation to the list of known compilations.
		//
		compilations.add(compilation);
		return compilation.getStrongName();
	}

	private String writeHtmlAndJsWithStrongName(TreeLogger logger, String js,
			String strongName) throws UnableToCompleteException {
		try {

			byte[] scriptBytes = js.getBytes("UTF-8");
			{
				byte[] prefix = getHtmlPrefix().getBytes("UTF-8");
				byte[] suffix = getHtmlSuffix().getBytes("UTF-8");
				File outFile = new File(outDir, strongName + ".cache.html");
				Util.writeBytesToFile(logger, outFile, new byte[][] { prefix,
						scriptBytes, suffix });
				String msg = "Compilation written to "
						+ outFile.getAbsolutePath();
				logger.log(TreeLogger.TRACE, msg, null);
			}
			{
				byte[] prefix = getJsPrefix().getBytes("UTF-8");
				byte[] suffix = getJsSuffix().getBytes("UTF-8");
				File outFile = new File(outDir, strongName + ".cache.js");
				Util.writeBytesToFile(logger, outFile, new byte[][] { prefix,
						scriptBytes, suffix });
				String msg = "Compilation written to "
						+ outFile.getAbsolutePath();
				logger.log(TreeLogger.TRACE, msg, null);
			}
			return strongName;
		} catch (UnsupportedEncodingException e) {
			logger.log(TreeLogger.ERROR,
					"Unable to encode compiled script as UTF-8", e);
			throw new UnableToCompleteException();
		}
	}

LocalServer Module
출처: http://code.google.com/apis/gears/api_localserver.html

네트워크 연결이 끊긴 상태에서도 웹 어플리케이션의 HTTP 리소스들을 로컬에 저장하고 제공해주는 역할을 한다.

Resource Stores
 - ResourceStore : 자바스크립트를 이용하여 임시의 URL들을 캡쳐링
 - ManagedResourceStore : manifest 파일에 선언된 URL들을 캡쳐링

Updating of cached resources
 - ManagedResourceStore는 manifest 파일의 버전이 변경될 경우 자동적으로 업데이트를 한다.
   (checkForUpdate() 메소드를 이용)
 - ResourceStore는 웹 어플리케이션에 의해 변경된다. (자동 업데이트 X)

Local serving of cached resources
 - LocalServer는 HTTP/HTTPS 요청을 캐싱된 데이터를 이용하여 상황에 맞게 제공해준다.
 - 네트워크 상태와는 상관없이 요청된 URL이 캐싱된 경우에는 캐싱된 리소스들로 처리한다.

LocalServer Class
 로컬서버는 Gears Factory를 통하여 생성된다.
생성소스보기

<script type="text/javascript" src="gears_init.js"></script>
<script type="text/javascript">
var localServer = google.gears.factory.create('beta.localserver', '1.0');
</script>

{
	// version of the manifest file format
	"betaManifestVersion": 1,

	// version of the set of resources described in this manifest file
	"version": "my_version_string",

	// optional
	// If the store specifies a requiredCookie, when a request would hit
	// an entry contained in the manifest except the requiredCookie is
	// not present, the local server responds with a redirect to this URL.
	"redirectUrl": "login.html",
	// URLs to be cached (URLs are given relative to the manifest URL)
	"entries": [
		{ "url": "main.html", "src": "main_offline.html" },
		{ "url": ".", "redirect": "main.html" },
		{ "url": "main.js" }
		{ "url": "formHandler.html", "ignoreQuery": true },
	]
}