org.xidea.lite.LiteEngine Maven / Gradle / Ivy

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package org.xidea.lite;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Writer;
import java.net.URI;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.xidea.el.json.JSONDecoder;

public class LiteEngine implements TemplateEngine {
	private static final Log log = LogFactory.getLog(LiteEngine.class);
	protected URI compiledBase;
	/**
	 * WeakHashMap 回收的太快了?
	 */
	protected Map templateMap = new java.util.WeakHashMap();
	protected ExecutorService executorService = Executors.newScheduledThreadPool(8);//最多允许是个并发写装载的lazy_widget
	protected LiteEngine() {
	}

	public LiteEngine(URI compiledBase) {
		if (compiledBase != null) {
			this.compiledBase = compiledBase.normalize();
		}
	}
	public void render(String path, Object context, Writer out)
			throws IOException {
		getTemplate(path).render(context, out);
		out.flush();
	}

	public Template getTemplate(String path) throws IOException {
		Template template = templateMap.get(path);
		if (template == null) {
			template = createTemplate(path);
			templateMap.put(path, template);
			return template;
		} else {
			return template;
		}
	}

	public void clear(String path) {
		templateMap.remove(path);
	}

	@SuppressWarnings("unchecked")
	protected Template createTemplate(String path) throws IOException {
		// [resources,litecode,config]
		String litecode = getLitecode(path);
		if(litecode !=null){
			List