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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.components.table;
import java.util.List;
import net.sf.jasperreports.engine.JRElement;
import net.sf.jasperreports.engine.JRExpressionCollector;
/**
*
*
* @author Lucian Chirita ([email protected])
*/
public class ColumnExpressionCollector implements ColumnVisitor
{
private final JRExpressionCollector mainCollector;
private final JRExpressionCollector datasetCollector;
public ColumnExpressionCollector(JRExpressionCollector mainCollector,
JRExpressionCollector datasetCollector)
{
this.mainCollector = mainCollector;
this.datasetCollector = datasetCollector;
}
public void collectColumns(List columns)
{
for (BaseColumn column : columns)
{
column.visitColumn(this);
}
}
@Override
public Void visitColumn(Column column)
{
mainCollector.collectPropertyExpressions(column.getPropertyExpressions());
mainCollector.addExpression(column.getPrintWhenExpression());
collectCell(column.getTableHeader());
collectCell(column.getTableFooter());
collectGroupCells(column.getGroupHeaders());
collectGroupCells(column.getGroupFooters());
collectCell(column.getColumnHeader());
collectCell(column.getColumnFooter());
collectCell(column.getDetailCell());
// nothing
return null;
}
@Override
public Void visitColumnGroup(ColumnGroup columnGroup)
{
mainCollector.collectPropertyExpressions(columnGroup.getPropertyExpressions());
mainCollector.addExpression(columnGroup.getPrintWhenExpression());
collectCell(columnGroup.getTableHeader());
collectCell(columnGroup.getTableFooter());
collectGroupCells(columnGroup.getGroupHeaders());
collectGroupCells(columnGroup.getGroupFooters());
collectCell(columnGroup.getColumnHeader());
collectCell(columnGroup.getColumnFooter());
collectColumns(columnGroup.getColumns());
// nothing
return null;
}
protected void collectGroupCells(List groupCells)
{
if (groupCells != null)
{
for (GroupCell groupCell : groupCells)
{
collectCell(groupCell.getCell());
}
}
}
protected void collectCell(BaseCell cell)
{
if (cell == null)
{
return;
}
datasetCollector.collect(cell.getStyle());
JRElement[] elements = cell.getElements();
if (elements != null)
{
for (int i = 0; i < elements.length; i++)
{
elements[i].collectExpressions(datasetCollector);
}
}
}
}