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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.math;

import java.util.ArrayList;

import com.scudata.common.MessageManager;
import com.scudata.common.RQException;
import com.scudata.dm.Context;
import com.scudata.dm.Sequence;
import com.scudata.expression.Function;
import com.scudata.expression.IParam;
import com.scudata.resources.EngineMessage;
import com.scudata.util.Variant;

/**
 * ?????г?Ա????С??????,????ֵ??Ա?????ԣ???ֵ??Ա???Զ?ȡ????????С?ڵ???0?ĳ?Ա???ش???ֵ0
 * @author yanjing
 *
 */
public class Lcm extends Function {
	/**
	 * ??????ʽ????Ч?ԣ???Ч???׳??쳣
	 */
	public void checkValidity() {
		if (param == null) {
			MessageManager mm = EngineMessage.get();
			throw new RQException("lcm" + mm.getMessage("function.missingParam"));
		} else if (param.isLeaf()) {
			MessageManager mm = EngineMessage.get();
			throw new RQException("lcm" + mm.getMessage("function.invalidParam"));
		}
	}

	public Object calculate(Context ctx) {
		int size = param.getSubSize();
		ArrayList num=new ArrayList();
		for(int j=0;j