RestClientBuilder.java

package org.rest.rapa;

import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.List;

import net.sf.ehcache.Cache;
import net.sf.ehcache.CacheManager;

import org.apache.commons.httpclient.auth.AuthPolicy;
import org.rest.rapa.formatter.FormatHandler;
import org.rest.rapa.formatter.JAXB.XMLHandler;

public class RestClientBuilder {
	private String url;
	private String password = "";
	private String username = "";
	private String scheme = "";
	private String realm = "";
	private boolean formatAsExtenstion;
	private List<String> authenticationPrefefences = new ArrayList<String>();
	private FormatHandler formatHandler = new XMLHandler();

	public RestClientBuilder withUrl(String url) {
		this.url = url;
		return this;
	}

	public RestClientBuilder withUserName(String username) {
		this.username = username;
		return this;
	}

	public RestClientBuilder withPassword(String password) {
		this.password = password;
		return this;
	}

	public RestClientBuilder withScheme(String scheme) {
		this.scheme = scheme;
		return this;
	}

	public RestClientBuilder withRealm(String realm) {
		this.realm = realm;
		return this;
	}

	public RestClientBuilder withBasicAuthentication() {
		this.authenticationPrefefences.add(AuthPolicy.BASIC);
		return this;
	}

	public RestClientBuilder withDigestAuthentication() {
		this.authenticationPrefefences.add(AuthPolicy.DIGEST);
		return this;
	}

	public RestClientBuilder withNTLMAuthentication() {
		this.authenticationPrefefences.add(AuthPolicy.NTLM);
		return this;
	}

	public RestClientBuilder withFormatHandler(FormatHandler formatHandler) {
		this.formatHandler = formatHandler;
		return this;
	}

	public RestClientBuilder useFormatAsExtension() {
		this.formatAsExtenstion = true;
		return this;
	}

	public RestClient build() throws MalformedURLException {
		HttpClientAdapterImpl httpClientAdapter = new HttpClientAdapterImpl(
				username, password, host(), port(), realm, scheme,
				authenticationPrefefences);
		HttpMethodProvider httpMethodProvider = new HttpMethodProvider();

		CacheManager singletonCacheManager = CacheManager.getInstance();
		singletonCacheManager.addCache("client cache");
		Cache clientCache = singletonCacheManager.getCache("client cache");

		HttpMethodExecutor httpMethodExecutor = new HttpMethodExecutor(
				httpClientAdapter, httpMethodProvider, clientCache,
				singletonCacheManager);
		Url resourceUrl = new Url(url, formatHandler.getExtension(),
				formatAsExtenstion);

		return new RestClient(resourceUrl, formatHandler, httpMethodExecutor);
	}

	private String host() throws MalformedURLException {
		return new Url(url, "", false).getHostName();
	}

	private int port() throws MalformedURLException {
		return new Url(url, "", false).getPort();
	}

}