98 lines
3.7 KiB
Java
Executable File
98 lines
3.7 KiB
Java
Executable File
/*
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* Copyright (C) 2001-2004 Red Hat Inc. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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package com.arsdigita.bebop.demo;
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import com.arsdigita.bebop.Label;
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import com.arsdigita.bebop.event.PrintEvent;
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import com.arsdigita.bebop.event.PrintListener;
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import com.arsdigita.db.ConnectionManager;
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import java.sql.Connection;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import org.apache.log4j.Logger;
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public class HelloDate extends com.arsdigita.bebop.Label {
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private static final Logger s_log =
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Logger.getLogger(HelloDate.class.getName());
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/**
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* Hello-date is a special-case label.
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*/
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public HelloDate() {
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// set the label text via a print listener, because we
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// want to query Oracle for the date on each request.
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super(new HelloDatePrintListener());
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}
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private static class HelloDatePrintListener implements PrintListener {
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public void prepare(PrintEvent pevt) {
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Label target = (Label)pevt.getTarget();
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// we're setting the label text dynamically
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// <bebop:label>Hello, tody's date is ...</bebop:label>
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// where the date comes from Oracle's "select
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// sysdate from dual"
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//
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// we're counting on whatever stylesheet we have available
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// knowing what to do with "bebop:label"
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target.setLabel(makeHelloString());
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}
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/**
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* Get the message we want to display from the database
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*/
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private String makeHelloString() {
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StringBuffer result = new StringBuffer(100);
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// get sysdate from Oracle
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Connection conn = null;
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try {
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// XXX: you could also use persistence layer
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// here, we're just using JDBC for now.
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// This use of straight JDBC is obsolete, do not
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// use it as a good example.
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conn = ConnectionManager.getConnection();
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Statement stmt = conn.createStatement();
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ResultSet rs = stmt.executeQuery
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("select to_char(sysdate, 'Month dd, yyyy'), "
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+ "to_char(sysdate, 'HH24:MI') from dual");
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// here you would put in "obj.getProperty(...)" instead
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// of directly referencing a result set
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rs.next();
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result.append("Hello! Today's date is ")
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.append(rs.getString(1))
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.append(". It is now ")
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.append(rs.getString(2))
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.append(".");
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rs.close();
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stmt.close();
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} catch (SQLException e) {
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s_log.error(e);
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try {ConnectionManager.returnConnection(conn); }
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catch (SQLException e2) {
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s_log.error(e2);
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}
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result.append("WARNING: Failed to get date from database.");
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}
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return result.toString();
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}
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}
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}
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