com.scudata.expression.fn.math.Digit 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.math;

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;


/**
 * digit(xi,??)	sum(2i-1*xi)??xi???ַ???ʱ??ת??????
	@h	sum(16i-1*xi)??xi???ַ???ʱ?Ȱ?ʮ????????λ????ת????
	@d	sum(10i-1*xi)??xi???ַ???ʱ??ת??????
	@n	sum(2i-1*if(xi,1,0))

 * @author yanjing
 *
 */
public class Digit extends Function {
	/**
	 * ??????ʽ????Ч?ԣ???Ч???׳??쳣
	 */
	public void checkValidity() {
		if (param == null) {
			MessageManager mm = EngineMessage.get();
			throw new RQException("digit" + mm.getMessage("function.missingParam"));
		} else if (param.isLeaf()) {
			MessageManager mm = EngineMessage.get();
			throw new RQException("digit" + mm.getMessage("function.invalidParam"));
		}
	}

	public Object calculate(Context ctx) {
		int size=param.getSubSize();
		Object[] result1=new Object[size];
		for(int j=0;j=0){//ʮ??????
			for(int j=0;j=0){//10????
			for(int j=0;j=0){//??1?ǿ?0
			for(int j=0;j