com.scudata.dw.NodeFilter Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of esproc Show documentation

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

The newest version!

package com.scudata.dw;

import com.scudata.dm.Context;
import com.scudata.dm.Param;
import com.scudata.expression.Expression;
import com.scudata.expression.Node;
import com.scudata.util.Variant;

public class NodeFilter extends IFilter {
	private Node node;
	private Param param;
	private Context ctx;

	public NodeFilter(ColumnMetaData column, int priority, Node node, Context ctx) {
		super(column, priority);
		
		this.node = node;
		this.exp = new Expression(node);
		this.ctx = ctx;
		
		param = ctx.getParam(column.getColName());
		if (param == null) {
			param = new Param(column.getColName(), Param.VAR, null);
			ctx.addParam(param);
		}
	}
	
	public boolean match(Object value) {
		param.setValue(value);
		return Variant.isTrue(node.calculate(ctx));
	}
	
	public boolean match(Object minValue, Object maxValue) {
		if (Variant.isEquals(minValue, maxValue)) {
			return match(minValue);
		} else {
			return true;
		}
	}
	
	public Node getNode() {
		return node;
	}
	
	public void setNode(Node node) {
		this.node = node;
	}
	
	public Param getParam() {
		return param;
	}

	public Context getCtx() {
		return ctx;
	}
}