QuoteBusiness.java

package com.idega.block.quote.business;

import javax.ejb.FinderException;

import com.idega.block.quote.data.QuoteEntity;
import com.idega.block.quote.data.QuoteEntityHome;
import com.idega.data.IDOException;
import com.idega.idegaweb.IWApplicationContext;
import com.idega.presentation.IWContext;
import com.idega.util.IWTimestamp;

public class QuoteBusiness {

	public static final String PARAMETER_QUOTE = "quote";
	public static final String PARAMETER_QUOTE_ID = "quote_id";
	public static final String PARAMETER_QUOTE_DATE = "quote_date";
	public static final String PARAMETER_LOCALE_ID = "locale_id";
	public static final String PARAMETER_QUOTE_TEXT = "quote_text";
	public static final String PARAMETER_QUOTE_AUTHOR = "quote_author";
	public static final String PARAMETER_QUOTE_ORIGIN = "quote_origin";
	public static final String PARAMETER_MODE = "mode";
	public static final String PARAMETER_NEW = "new";
	public static final String PARAMETER_DELETE = "delete";
	public static final String PARAMETER_EDIT = "edit";
	public static final String PARAMETER_SAVE = "save";
	public static final String PARAMETER_CLOSE = "close";
	public static final String PARAMETER_OBJECT_INSTANCE_ID = "qu_o_i_id";

	private static QuoteBusiness instance;

	private QuoteEntityHome quoteHome;

	private QuoteBusiness() {
	}

	public static QuoteBusiness getQuoteBusinessInstace() {
		if (instance == null) {
			instance = new QuoteBusiness();
		}
		return instance;
	}

	public QuoteHolder getRandomQuote(IWApplicationContext iwc, int localeID, int objectID, boolean fetchFromDatabase) {
		QuoteHolder holder = null;
		QuoteHolder newHolder = null;
		String date = null;
		String dateNow = new IWTimestamp().toSQLDateString();
		
		if(!fetchFromDatabase){
			try {
				holder = (QuoteHolder) iwc.getApplicationAttribute(PARAMETER_QUOTE + "_" + Integer.toString(localeID) + "_" + String.valueOf(objectID));
			}
			catch (Exception e) {
				holder = null;
			}
		
			date = (String) iwc.getApplicationAttribute(PARAMETER_QUOTE_DATE + "_" + Integer.toString(localeID) + "_" + String.valueOf(objectID));
		}
		
		
		if (!fetchFromDatabase && date != null && holder != null && date.equalsIgnoreCase(dateNow)) {
			return holder;
		}
		else {
			newHolder = getQuoteHolder(getRandomQuote(localeID));
			if (holder != null && getNumberOfQuotes(localeID) > 1) {
				while (holder.getQuoteID() == newHolder.getQuoteID()) {
					newHolder = getQuoteHolder(getRandomQuote(localeID));
				}
			}
			if (newHolder != null) {
				if(!fetchFromDatabase){
					iwc.setApplicationAttribute(PARAMETER_QUOTE + "_" + Integer.toString(localeID) + "_" + String.valueOf(objectID), newHolder);
					iwc.setApplicationAttribute(PARAMETER_QUOTE_DATE + "_" + Integer.toString(localeID) + "_" + String.valueOf(objectID), dateNow);
				}
				return newHolder;
			}
			return null;
		}
	}

	public int getNumberOfQuotes(int localeID) {
		try {
			return getQuoteHome().getNumberOfQuotes(localeID);
		}
		catch (IDOException ie) {
			return 0;
		}
		catch (FinderException fe) {
			return 0;	
		}
	}
	
	public void saveQuote(IWContext iwc, int objectID, int quoteID, int iLocaleID, String quoteOrigin, String quoteText, String quoteAuthor) {
		try {
			boolean update = false;
			if (quoteID != -1) {
				update = true;
			}
			QuoteEntityHome qhome = getQuoteHome();
			QuoteEntity quote = null;
			if (update) {
				quote = qhome.findByPrimaryKey(new Integer(quoteID));
				if (quote == null) {
					quote = qhome.create();
					update = false;
				}
			}
			else {
				quote = qhome.create();
			}

			if (quoteOrigin != null && quoteOrigin.length() == 0) {
				quote.setQuoteOrigin(quoteOrigin);
			}
			if (quoteText != null && quoteText.length() == 0) {
				quote.setQuoteText(quoteText);
			}
			if (quoteAuthor != null && quoteAuthor.length() == 0) {
				quote.setQuoteAuthor(quoteAuthor);
			}

			if (!update) {
				quote.setICLocaleID(iLocaleID);
			}

			try {
				quote.store();
				iwc.removeApplicationAttribute(PARAMETER_QUOTE + "_" + Integer.toString(iLocaleID) + "_" + String.valueOf(objectID));
				iwc.removeApplicationAttribute(PARAMETER_QUOTE_DATE + "_" + Integer.toString(iLocaleID) + "_" + String.valueOf(objectID));
			}
			catch (Exception e) {
				e.printStackTrace(System.err);
			}

		}
		catch (Exception e) {
			e.printStackTrace();
		}
	}

	public void deleteQuote(IWContext iwc, int objectID, int quoteID, int localeID) {
		try {
			if (quoteID != -1) {
				QuoteEntityHome qhome = getQuoteHome();
				QuoteEntity quote = qhome.findByPrimaryKey(new Integer(quoteID));
				quote.remove();
				iwc.removeApplicationAttribute(PARAMETER_QUOTE + "_" + Integer.toString(localeID) + "_" + String.valueOf(objectID));
				iwc.removeApplicationAttribute(PARAMETER_QUOTE_DATE + "_" + Integer.toString(localeID) + "_" + String.valueOf(objectID));
			}
		}
		catch (Exception e) {
			e.printStackTrace(System.err);
		}
	}

	public QuoteHolder getQuoteHolder(QuoteEntity quote) {
		QuoteHolder holder = null;
		if (quote != null) {
			holder = new QuoteHolder();
			holder.setQuoteID(((Integer) quote.getPrimaryKey()).intValue());
			holder.setAuthor(quote.getQuoteAuthor());
			holder.setOrigin(quote.getQuoteOrigin());
			holder.setText(quote.getQuoteText());
			holder.setLocaleID(quote.getICLocaleID());
		}
		return holder;
	}

	public QuoteHolder getQuoteHolder(int quoteID) {
		try {
			QuoteEntityHome qhome = this.getQuoteHome();
			QuoteEntity quote = qhome.findByPrimaryKey(new Integer(quoteID));
			return getQuoteHolder(quote);
		}
		catch (Exception e) {
			return null;
		}
	}

	public QuoteEntity getRandomQuote(int localeID) {
		try {
			java.util.Collection cQuotes;
			QuoteEntityHome qhome = getQuoteHome();
			cQuotes = qhome.findAllQuotesByLocale(localeID);

			QuoteEntity[] quotes = (QuoteEntity[]) cQuotes.toArray(new QuoteEntity[0]);
			if (quotes != null) {
				if (quotes.length > 0) {
					int quoteNumber = (int) Math.round(Math.random() * (quotes.length - 1));
					return quotes[quoteNumber];
				}
			}
			return null;
		}
		catch (Exception e) {
			return null;
		}
	}

	protected QuoteEntityHome getQuoteHome() {
		if (this.quoteHome == null) {
			try {
				this.quoteHome = (QuoteEntityHome) com.idega.data.IDOLookup.getHome(QuoteEntity.class);
			}
			catch (java.rmi.RemoteException rme) {
				rme.printStackTrace();
			}
		}
		return this.quoteHome;
	}

}