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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.engine.util;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.TreeSet;
import net.sf.jasperreports.engine.JRException;
/**
* @author Teodor Danciu ([email protected])
*/
public abstract class AbstractSampleApp
{
/**
*
*/
public abstract void test() throws JRException;
/**
*
*/
public String usage()
{
StringBuilder sb = new StringBuilder();
String appName = this.getClass().getName();
sb.append(appName + " usage:" + "\n\tjava " + appName + " task" + "\n\tTasks : ");
TreeSet tasks = new TreeSet();
Method[] methods = getClass().getMethods();
for (Method method:methods)
{
if (
method.getDeclaringClass().getName().equals(getClass().getName())
&& ((method.getModifiers() & Modifier.STATIC) == 0)
)
{
tasks.add(method.getName());
}
}
for (String task:tasks)
{
sb.append(task).append(" | ");
}
return sb.toString().substring(0, sb.length() - 3);
}
/**
*
*/
public void executeTask(String taskName)
{
try
{
Method method = getClass().getMethod(taskName, new Class[]{});
method.invoke(this, new Object[]{});
}
catch (NoSuchMethodException e)
{
System.out.println(usage());
}
catch (IllegalAccessException e)
{
e.getCause().printStackTrace();
}
catch (InvocationTargetException e)
{
e.getCause().printStackTrace();
}
}
/**
*
*/
protected File[] getFiles(File parentFile, String extension)
{
List fileList = new ArrayList();
String[] files = parentFile.list();
if (files != null)
{
for(int i = 0; i < files.length; i++)
{
String reportFile = files[i];
if (reportFile.endsWith("." + extension))
{
fileList.add(new File(parentFile, reportFile));
}
}
}
return fileList.toArray(new File[fileList.size()]);
}
/**
*
*/
protected Connection getDemoHsqldbConnection() throws JRException
{
Connection conn;
try
{
//Change these settings according to your local configuration
String driver = "org.hsqldb.jdbcDriver";
String connectString = "jdbc:hsqldb:hsql://localhost";
String user = "sa";
String password = "";
Class.forName(driver);
conn = DriverManager.getConnection(connectString, user, password);
}
catch (ClassNotFoundException e)
{
throw new JRException(e);
}
catch (SQLException e)
{
throw new JRException(e);
}
return conn;
}
/**
*
*/
public static void main(AbstractSampleApp app, String[] args)
{
try
{
if(args.length != 1)
{
System.out.println(app.usage());
return;
}
app.executeTask(args[0]);
}
catch (Exception e)
{
e.printStackTrace();
}
}
}