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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.olap.xmla;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.olap.result.JROlapCell;
import net.sf.jasperreports.olap.result.JROlapResult;
import net.sf.jasperreports.olap.result.JROlapResultAxis;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Lucian Chirita ([email protected])
*/
public class JRXmlaResult implements JROlapResult
{
private final static Log log = LogFactory.getLog(JRXmlaResult.class);
public static final String EXCEPTION_MESSAGE_KEY_XMLA_AXIS_POSITIONS_NUMBER_ERROR = "data.olap.xmla.axis.positions.number.error";
private List axesList = new ArrayList();
private JRXmlaResultAxis[] axes;
private int[] cellOrdinalFactors;
private final List cells = new ArrayList();
@Override
public JROlapResultAxis[] getAxes()
{
return ensureAxisArray();
}
@Override
public JROlapCell getCell(int[] axisPositions)
{
int cellOrdinal = getCellOrdinal(axisPositions);
// Mpenningroth Nov 14th 2008
// Modified to check size of array. Was throwing index exception
// for queries that return fewer cells than expected.
// The xmla spec (version 1.1 CellData section page 26) indicates that cell elements
// can be missing.
if (cellOrdinal < cells.size()) {
return cells.get(cellOrdinal);
}
else {
return null;
}
}
protected int getCellOrdinal(int[] axisPositions)
{
ensureCellOrdinalFactors();
if (axisPositions.length != axes.length)
{
throw
new JRRuntimeException(
EXCEPTION_MESSAGE_KEY_XMLA_AXIS_POSITIONS_NUMBER_ERROR,
new Object[]{axisPositions.length, axes.length});
}
int ordinal = 0;
for (int i = 0; i < axisPositions.length; ++i)
{
ordinal += cellOrdinalFactors[i] * axisPositions[i];
}
return ordinal;
}
public void addAxis(JRXmlaResultAxis axis)
{
axesList.add(axis);
resetAxisArray();
}
public JRXmlaResultAxis getAxisByName(String name)
{
JRXmlaResultAxis axis = null;
for (Iterator iter = axesList.iterator(); axis == null && iter.hasNext();)
{
JRXmlaResultAxis ax = iter.next();
if (ax.getAxisName().equals(name))
{
axis = ax;
}
}
return axis;
}
protected JRXmlaResultAxis[] ensureAxisArray()
{
if (axes == null)
{
axes = new JRXmlaResultAxis[axesList.size()];
axes = axesList.toArray(axes);
}
return axes;
}
protected void ensureCellOrdinalFactors()
{
ensureAxisArray();
if (cellOrdinalFactors == null)
{
int axisCount = axes.length;
cellOrdinalFactors = new int[axisCount];
cellOrdinalFactors[0] = 1;
for (int i = 1; i < axisCount; ++i)
{
cellOrdinalFactors[i] = cellOrdinalFactors[i - 1] * axes[i - 1].getTupleCount();
}
}
}
protected void resetAxisArray()
{
axes = null;
cellOrdinalFactors = null;
}
public void setCell(JRXmlaCell cell, int cellOrdinal)
{
int cellsCount = cells.size();
if (cellOrdinal == -1 || cellOrdinal == cellsCount)
{
cells.add(cell);
}
else if (cellOrdinal > cellsCount)
{
for (int i = cellsCount; i < cellOrdinal; ++i)
{
cells.add(null);
}
cells.add(cell);
}
else
{
if (log.isWarnEnabled())
{
log.warn("Overwriting cell at ordinal " + cellOrdinal);
}
cells.set(cellOrdinal, cell);
}
}
}