/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.metadata;
import java.beans.BeanInfo;
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
import java.util.HashMap;
public class SharedBeanInfo {
private Class beanClass;
private BeanInfo beanInfo;
private HashMap<String, PropertyDescriptor> propertyDescriptors;
public SharedBeanInfo( final Class beanClass ) {
this.beanClass = beanClass;
}
public Class getBeanClass() {
return beanClass;
}
public BeanInfo getBeanInfo() {
if ( beanInfo == null ) {
this.propertyDescriptors = new HashMap<String, PropertyDescriptor>();
try {
beanInfo = Introspector.getBeanInfo( beanClass );
final PropertyDescriptor[] descriptors = beanInfo.getPropertyDescriptors();
for ( int i = 0; i < descriptors.length; i++ ) {
final PropertyDescriptor descriptor = descriptors[i];
propertyDescriptors.put( descriptor.getName(), descriptor );
}
} catch ( IntrospectionException e ) {
throw new IllegalStateException( "Cannot introspect specified " + beanClass );
}
}
return beanInfo;
}
public PropertyDescriptor getPropertyDescriptor( final String name ) {
if ( beanInfo == null ) {
// initialize propery map ..
getBeanInfo();
}
return propertyDescriptors.get( name );
}
}