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Free Java Reporting Library
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2022 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.components.items.fill;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.jasperreports.components.items.Item;
import net.sf.jasperreports.components.items.ItemProperty;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.component.FillContextProvider;
import net.sf.jasperreports.engine.fill.JRFillExpressionEvaluator;
import net.sf.jasperreports.engine.fill.JRFillObjectFactory;
/**
* @author Teodor Danciu ([email protected])
*/
public abstract class FillItem implements Item
{
/**
*
*/
protected Item item;
protected Map evaluatedProperties;
protected FillContextProvider fillContextProvider;
/**
*
*/
public FillItem(
FillContextProvider fillContextProvider,
Item item,
JRFillObjectFactory factory
)
{
factory.put(item, this);
this.item = item;
this.fillContextProvider = fillContextProvider;
}
/**
*
*/
public void evaluateProperties(JRFillExpressionEvaluator evaluator, byte evaluation) throws JRException
{
List itemProperties = getProperties();
Map result = null;
if(itemProperties != null && !itemProperties.isEmpty())
{
result = new HashMap<>();
for(ItemProperty property : itemProperties)
{
result.put(property.getName(), getEvaluatedValue(property, evaluator, evaluation));
}
}
//if some of the item properties are conditioning each other
verifyValues(result);
evaluatedProperties = result;
}
@Override
public Object clone()
{
throw new UnsupportedOperationException();
}
@Override
public List getProperties()
{
return item.getProperties();
}
public Map getEvaluatedProperties()
{
return evaluatedProperties;
}
public Object getEvaluatedValue(ItemProperty property, JRFillExpressionEvaluator evaluator, byte evaluation) throws JRException
{
Object result = null;
if(
property.getValueExpression() == null
|| property.getValueExpression().getText() == null
|| property.getValueExpression().getText().trim().length() == 0
)
{
result = property.getValue();
}
else
{
result = evaluator.evaluate(property.getValueExpression(), evaluation);
}
verifyValue(property, result);
return result;
}
public abstract void verifyValue(ItemProperty property, Object value) throws JRException;
public abstract void verifyValues(Map result) throws JRException;
}