package com.easyjf.util.regx;
/**
 * 過濾器實現
 * @author 
 *
 */
public class RegexFilter implements Filter {
	protected String regex = "";

	protected String rpStr = "";

	protected String source = "";

	protected String tempSource = "";

	protected Filter filter = null;

	public RegexFilter() {
	}

	public RegexFilter(String regex, String rpStr, String source) {
		this.regex = regex;
		this.rpStr = rpStr;
		this.source = source;
		this.tempSource = source;
		this.applyFilter();
	}

	protected RegexFilter(String source) {
		this.source = source;
		this.tempSource = source;
	}

	protected void applyFilter() {
		FilterBuilder builder = new RegFilterBuilder(regex, rpStr, tempSource);
		FilterDirector direct = new FilterDirector(builder);
		direct.construct();

		this.filter = builder.getFilter();
	}

	public String getFilteredStr() {
		return filter.getFilteredStr();
	}

	protected void doFiltration() {
		this.applyFilter();
		this.tempSource = filter.getFilteredStr();
	}

}