AviatorScriptEngine.java

package com.googlecode.aviator.script;

import java.io.Reader;

import javax.script.AbstractScriptEngine;
import javax.script.Bindings;
import javax.script.Compilable;
import javax.script.CompiledScript;
import javax.script.ScriptContext;
import javax.script.ScriptEngineFactory;
import javax.script.ScriptException;
import javax.script.SimpleBindings;

import com.googlecode.aviator.AviatorEvaluator;


/**
 * Aviator Expression engine
 * 
 * @author libinsong1204@gmail.com
 * @date 2011-1-18 上午11:03:34
 * @version
 */
public class AviatorScriptEngine extends AbstractScriptEngine implements Compilable {

    // 缓存编译结果
    private boolean cached = true;
    private final AviatorScriptEngineFactory factory;


    public AviatorScriptEngine(AviatorScriptEngineFactory factory) {
        this.factory = factory;
    }


    public CompiledScript compile(String script) throws ScriptException {
        return new CompiledAviatorScript(this, AviatorEvaluator.compile(script, this.cached));
    }


    public CompiledScript compile(Reader script) throws ScriptException {
        throw new UnsupportedOperationException();
    }


    public Bindings createBindings() {
        return new SimpleBindings();
    }


    public Object eval(String script, ScriptContext context) throws ScriptException {
        return this.compile(script).eval(context);
    }


    public Object eval(Reader reader, ScriptContext context) throws ScriptException {
        throw new UnsupportedOperationException();
    }


    public ScriptEngineFactory getFactory() {
        return this.factory;
    }


    public boolean isCached() {
        return this.cached;
    }


    public void setCached(boolean cached) {
        this.cached = cached;
    }
}