com.scudata.expression.fn.CreateCanvas Maven / Gradle / Ivy

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SPL(Structured Process Language) A programming language specially for structured data computing.

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package com.scudata.expression.fn;

import com.scudata.common.*;
import com.scudata.dm.*;
import com.scudata.expression.*;
import com.scudata.resources.EngineMessage;

/**
 * ???ɻ??????? canvas()
 * ???????ж??廭????ֱ???ڵ?Ԫ????ʹ??canvas()??????
 * ?????Ļ?ͼ?????п???ֱ???õ?Ԫ?????Ƶ??û????????趨??ͼ???????߻?ͼ??
 * @author runqian
 *
 */
public class CreateCanvas extends Function {

	public Object calculate(Context ctx) {
		if (param != null) {
			MessageManager mm = EngineMessage.get();
			throw new RQException("canvas" + mm.getMessage("function.invalidParam"));
		}

		return new Canvas();
	}

	public Node optimize(Context ctx) {
		return this;
	}
}