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

There is a newer version: 20240823

package com.scudata.expression;

import com.scudata.dm.Sequence;

/**
 * ???г?Ա????????
 * A.f()
 * @author RunQian
 *
 */
public abstract class SequenceFunction extends MemberFunction {
	protected Sequence srcSequence; // ????

	public boolean isLeftTypeMatch(Object obj) {
		return obj instanceof Sequence;
	}
	
	public void setDotLeftObject(Object obj) {
		srcSequence = (Sequence)obj;
	}
	
	/**
	 * ?ͷŽڵ????õĵ?????????Ķ???
	 */
	public void releaseDotLeftObject() {
		srcSequence = null;
	}

	/**
	 * ?жϵ?ǰ?ڵ??Ƿ??????к???
	 * ?????????????Ҳ?ڵ??????к????????ڵ?????????????Ҫ????ת??????
	 * @return
	 */
	public boolean isSequenceFunction() {
		return true;
	}
}