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/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */
package org.apache.poi.xssf.usermodel;
import static org.apache.poi.ooxml.POIXMLTypeLoader.DEFAULT_XML_OPTIONS;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Date;
import javax.xml.namespace.QName;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.ss.SpreadsheetVersion;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.Name;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.AreaReference;
import org.apache.poi.ss.util.CellReference;
import org.apache.poi.util.Beta;
import org.apache.poi.util.Internal;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlOptions;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCacheField;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCacheFields;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTPivotCacheDefinition;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorksheetSource;
public class XSSFPivotCacheDefinition extends POIXMLDocumentPart{
private CTPivotCacheDefinition ctPivotCacheDefinition;
@Beta
public XSSFPivotCacheDefinition(){
super();
ctPivotCacheDefinition = CTPivotCacheDefinition.Factory.newInstance();
createDefaultValues();
}
/**
* Creates an XSSFPivotCacheDefintion representing the given package part and relationship.
* Should only be called when reading in an existing file.
*
* @param part - The package part that holds xml data representing this pivot cache definition.
*
* @since POI 3.14-Beta1
*/
@Beta
protected XSSFPivotCacheDefinition(PackagePart part) throws IOException {
super(part);
readFrom(part.getInputStream());
}
@Beta
public void readFrom(InputStream is) throws IOException {
try {
XmlOptions options = new XmlOptions(DEFAULT_XML_OPTIONS);
//Removing root element
options.setLoadReplaceDocumentElement(null);
ctPivotCacheDefinition = CTPivotCacheDefinition.Factory.parse(is, options);
} catch (XmlException e) {
throw new IOException(e.getLocalizedMessage(), e);
}
}
@Beta
@Internal
public CTPivotCacheDefinition getCTPivotCacheDefinition() {
return ctPivotCacheDefinition;
}
@Beta
private void createDefaultValues() {
ctPivotCacheDefinition.setCreatedVersion(XSSFPivotTable.CREATED_VERSION);
ctPivotCacheDefinition.setMinRefreshableVersion(XSSFPivotTable.MIN_REFRESHABLE_VERSION);
ctPivotCacheDefinition.setRefreshedVersion(XSSFPivotTable.UPDATED_VERSION);
ctPivotCacheDefinition.setRefreshedBy("Apache POI");
ctPivotCacheDefinition.setRefreshedDate(new Date().getTime());
ctPivotCacheDefinition.setRefreshOnLoad(true);
}
@Beta
@Override
protected void commit() throws IOException {
PackagePart part = getPackagePart();
OutputStream out = part.getOutputStream();
XmlOptions xmlOptions = new XmlOptions(DEFAULT_XML_OPTIONS);
//Sets the pivotCacheDefinition tag
xmlOptions.setSaveSyntheticDocumentElement(new QName(CTPivotCacheDefinition.type.getName().
getNamespaceURI(), "pivotCacheDefinition"));
ctPivotCacheDefinition.save(out, xmlOptions);
out.close();
}
/**
* Find the 2D base data area for the pivot table, either from its direct reference or named table/range.
* @return AreaReference representing the current area defined by the pivot table
* @throws IllegalArgumentException if the ref attribute is not contiguous or the name attribute is not found.
*/
@Beta
public AreaReference getPivotArea(Workbook wb) throws IllegalArgumentException {
final CTWorksheetSource wsSource = ctPivotCacheDefinition.getCacheSource().getWorksheetSource();
final String ref = wsSource.getRef();
final String name = wsSource.getName();
if (ref == null && name == null) {
throw new IllegalArgumentException("Pivot cache must reference an area, named range, or table.");
}
// this is the XML format, so tell the reference that.
if (ref != null) {
return new AreaReference(ref, SpreadsheetVersion.EXCEL2007);
}
assert (name != null);
// named range or table?
final Name range = wb.getName(name);
if (range != null) {
return new AreaReference(range.getRefersToFormula(), SpreadsheetVersion.EXCEL2007);
}
// not a named range, check for a table.
// do this second, as tables are sheet-specific, but named ranges are not, and may not have a sheet name given.
final XSSFSheet sheet = (XSSFSheet) wb.getSheet(wsSource.getSheet());
for (XSSFTable table : sheet.getTables()) {
// TODO: case-sensitive?
if (name.equals(table.getName())) {
return new AreaReference(table.getStartCellReference(), table.getEndCellReference(),
SpreadsheetVersion.EXCEL2007);
}
}
throw new IllegalArgumentException("Name '" + name + "' was not found.");
}
/**
* Generates a cache field for each column in the reference area for the pivot table.
* @param sheet The sheet where the data i collected from
*/
@Beta
protected void createCacheFields(Sheet sheet) {
//Get values for start row, start and end column
AreaReference ar = getPivotArea(sheet.getWorkbook());
CellReference firstCell = ar.getFirstCell();
CellReference lastCell = ar.getLastCell();
int columnStart = firstCell.getCol();
int columnEnd = lastCell.getCol();
Row row = sheet.getRow(firstCell.getRow());
CTCacheFields cFields;
if(ctPivotCacheDefinition.getCacheFields() != null) {
cFields = ctPivotCacheDefinition.getCacheFields();
} else {
cFields = ctPivotCacheDefinition.addNewCacheFields();
}
//For each column, create a cache field and give it en empty sharedItems
for(int i=columnStart; i<=columnEnd; i++) {
CTCacheField cf = cFields.addNewCacheField();
if(i==columnEnd){
cFields.setCount(cFields.sizeOfCacheFieldArray());
}
//General number format
cf.setNumFmtId(0);
Cell cell = row.getCell(i);
cell.setCellType(CellType.STRING);
cf.setName(row.getCell(i).getStringCellValue());
cf.addNewSharedItems();
}
}
}