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package io.odysz.semantics;

import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import io.odysz.anson.Anson;
import io.odysz.semantics.meta.TableMeta;
import io.odysz.transact.x.TransException;

/**
 * The semantics data returned by transaction as the commitment result.
 * 
 * @author [email protected]
 */
public class SemanticObject extends Anson {

	protected HashMap props;
	public HashMap props() { return props; }

	/**@param prop
	 * @return null if the property doesn't exists
	 */
	public Class getType (String prop) {
		if (prop == null || props == null || !props.containsKey(prop))
			return null;

		Object p = props.get(prop);
		return p == null
				? Object.class // has key, no value
				: p.getClass();
	}

	public boolean has(String prop) {
		return props != null && props.containsKey(prop) && props.get(prop) != null;
	}

	public Object get(String prop) {
		return props == null ? null : props.get(prop);
	}

	public String getString(String prop) {
		return props == null ? null : (String) props.get(prop);
	}

	public SemanticObject data() {
		return (SemanticObject) get("data");
	}

	public SemanticObject data(SemanticObject data) {
		return put("data", data);
	}
	
	public void clear() {
		props.clear();
	}
	
	public String port() {
		return (String) get("port");
	}

	public SemanticObject code(String c) {
		return put("code", c);
	}
	
	public String code() {
		return (String) get("code");
	}
	
	public SemanticObject port(String port) {
		return put("port", port);
	}

	public String msg() {
		return (String) get("msg");
	}
	
	public SemanticObject msg(String msg, Object... args) {
		if (args == null || args.length == 0)
			return put("msg", msg);
		else
			return put("msg", String.format(msg, args));
	}

	/**Put result set (AnResultset) into "rs", which is a 3d array.
	 * @param resultset
	 * @param total 
	 * @return this
	 * @throws TransException
	 */
	public SemanticObject rs(Object resultset, int total) throws TransException {
		add("total", total);
		return add("rs", resultset);
	}

	public Object rs(int i) {
		return ((ArrayList)get("rs")).get(i);
	}
	
	@SuppressWarnings("unchecked")
	public int total(int i) {
		if (get("total") == null)
			return -1;
		ArrayList