javabeandatasourceconnection.java

iReport-0.4.1-src是iReport的源代码,iReport是一个开源的报表项目,可以生成PDF等格式报表

/*
 * JRCustomDataSource.java
 *
 *  iReport  --  Visual designer for generating JasperReports Documents
 *  Copyright (C) 2002-2003  Giulio Toffoli [e-mail]
 *
 *  This program is free software; you can redistribute  and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  Giulio Toffoli
 *  Via T.Aspetti, 233
 *  35100 Padova ITALY
 *  [e-mail]
 *
 *
 * Created on 4 giugno 2003, 18.15
 */

package it.businesslogic.ireport.connection;
import it.businesslogic.ireport.*;
import it.businesslogic.ireport.util.*;
import java.sql.*;
import javax.swing.*;
/**
 *
 * @author  Administrator
 */
public class JavaBeanDataSourceConnection extends it.businesslogic.ireport.IReportConnection {
    
    public static String BEAN_ARRAY = "BEAN_ARRAY";
    public static String BEAN_COLLECTION = "BEAN_COLLECTION";
    
    private String name;
    
    private String factoryClass;
    
    private String methodToCall;
    
    private String type = "BEAN_COLLECTION";
    
    /** Creates a new instance of JDBCConnection */
    
    
    public JavaBeanDataSourceConnection() {
    }
    
    /**  This method return an instanced connection to the database.
     *  If isJDBCConnection() return false => getConnection() return null
     *
     */
    public java.sql.Connection getConnection() {       
            return null;
    }
    
    public boolean isJDBCConnection() {
        return false;
    }
    
    /*
     *  This method return all properties used by this connection
     */
    public java.util.HashMap getProperties()
    {    
        java.util.HashMap map = new java.util.HashMap();
        map.put("FactoryClass", Misc.nvl(this.getFactoryClass() ,"") );
        map.put("MethodToCall", Misc.nvl(this.getMethodToCall(),""));
        map.put("Type", Misc.nvl(this.getType(),""));
       
        return map;
    }
    
    public void loadProperties(java.util.HashMap map)
    {
        this.setFactoryClass( (String)map.get("FactoryClass"));
        this.setMethodToCall( (String)map.get("MethodToCall"));
    }
    
    public String getDescription(){ return "JavaBean set datasource"; }
    
    /** Getter for property methodToCall.
     * @return Value of property methodToCall.
     *
     */
    public java.lang.String getMethodToCall() {
        return methodToCall;
    }
    
    /** Setter for property methodToCall.
     * @param methodToCall New value of property methodToCall.
     *
     */
    public void setMethodToCall(java.lang.String methodToCall) {
        this.methodToCall = methodToCall;
    }
    
    /** Getter for property factoryClass.
     * @return Value of property factoryClass.
     *
     */
    public java.lang.String getFactoryClass() {
        return factoryClass;
    }
    
    /** Setter for property factoryClass.
     * @param factoryClass New value of property factoryClass.
     *
     */
    public void setFactoryClass(java.lang.String factoryClass) {
        this.factoryClass = factoryClass;
    }
    
    /**
     * Getter for property type.
     * @return Value of property type.
     */
    public java.lang.String getType() {
        return type;
    }    
   
    /**
     * Setter for property type.
     * @param type New value of property type.
     */
    public void setType(java.lang.String type) {
        this.type = type;
    }    
    
        /**
     *  This method return an instanced JRDataDource to the database.
     *  If isJDBCConnection() return true => getJRDataSource() return false
     */
    public net.sf.jasperreports.engine.JRDataSource getJRDataSource()
    { 
        try {
	        Object obj = Class.forName( factoryClass ).newInstance();
       		Object return_obj = obj.getClass().getMethod( methodToCall, new Class[0]).invoke(null,new Object[0]);   
       		
       		if (return_obj != null) 
       		{
	       		if (Misc.nvl(this.getType(),"").equals(BEAN_ARRAY) )
	       		{			
       				return new net.sf.jasperreports.engine.data.JRBeanArrayDataSource((Object[]) return_obj);
       			}
       			else if (Misc.nvl(this.getType(),"").equals(BEAN_COLLECTION) )
       			{
       				return new net.sf.jasperreports.engine.data.JRBeanCollectionDataSource((java.util.Collection) return_obj);	
       			}
       		}
       		return new net.sf.jasperreports.engine.JREmptyDataSource();
       		             
        } catch (Exception ex)
        {
            return super.getJRDataSource();
        }
    }
}