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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.xddf.usermodel.chart;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.CellValue;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.util.Beta;
import org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTAxDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumData;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTStrData;
/**
* Class {@code XDDFDataSourcesFactory} is a factory for {@link XDDFDataSource} instances.
*/
@Beta
public class XDDFDataSourcesFactory {
private XDDFDataSourcesFactory() {
}
public static XDDFCategoryDataSource fromDataSource(final CTAxDataSource categoryDS) {
return new XDDFCategoryDataSource() {
private CTStrData category = (CTStrData) categoryDS.getStrRef().getStrCache().copy();
@Override
public boolean isNumeric() {
return false;
}
@Override
public boolean isReference() {
return true;
}
@Override
public int getPointCount() {
return (int) category.getPtCount().getVal();
}
@Override
public String getPointAt(int index) {
return category.getPtArray(index).getV();
}
@Override
public String getDataRangeReference() {
return categoryDS.getStrRef().getF();
}
@Override
public int getColIndex() {
return 0;
}
};
}
public static XDDFNumericalDataSource fromDataSource(final CTNumDataSource valuesDS) {
return new XDDFNumericalDataSource() {
private CTNumData values = (CTNumData) valuesDS.getNumRef().getNumCache().copy();
private String formatCode = values.isSetFormatCode() ? values.getFormatCode() : null;
@Override
public String getFormatCode() {
return formatCode;
}
@Override
public void setFormatCode(String formatCode) {
this.formatCode = formatCode;
}
@Override
public boolean isNumeric() {
return true;
}
@Override
public boolean isReference() {
return true;
}
@Override
public int getPointCount() {
return (int) values.getPtCount().getVal();
}
@Override
public Double getPointAt(int index) {
return Double.valueOf(values.getPtArray(index).getV());
}
@Override
public String getDataRangeReference() {
return valuesDS.getNumRef().getF();
}
@Override
public int getColIndex() {
return 0;
}
};
}
public static XDDFNumericalDataSource fromArray(T[] elements, String dataRange) {
return new NumericalArrayDataSource(elements, dataRange);
}
public static XDDFCategoryDataSource fromArray(String[] elements, String dataRange) {
return new StringArrayDataSource(elements, dataRange);
}
public static XDDFNumericalDataSource fromArray(T[] elements, String dataRange, int col) {
return new NumericalArrayDataSource(elements, dataRange, col);
}
public static XDDFCategoryDataSource fromArray(String[] elements, String dataRange, int col) {
return new StringArrayDataSource(elements, dataRange, col);
}
public static XDDFNumericalDataSource fromNumericCellRange(XSSFSheet sheet,
CellRangeAddress cellRangeAddress) {
return new NumericalCellRangeDataSource(sheet, cellRangeAddress);
}
public static XDDFCategoryDataSource fromStringCellRange(XSSFSheet sheet, CellRangeAddress cellRangeAddress) {
return new StringCellRangeDataSource(sheet, cellRangeAddress);
}
private abstract static class AbstractArrayDataSource implements XDDFDataSource {
private final T[] elements;
private final String dataRange;
private int col = 0;
public AbstractArrayDataSource(T[] elements, String dataRange) {
this.elements = elements.clone();
this.dataRange = dataRange;
}
public AbstractArrayDataSource(T[] elements, String dataRange, int col) {
this.elements = elements.clone();
this.dataRange = dataRange;
this.col = col;
}
@Override
public int getPointCount() {
return elements.length;
}
@Override
public T getPointAt(int index) {
return elements[index];
}
@Override
public boolean isReference() {
return dataRange != null;
}
@Override
public boolean isNumeric() {
Class arrayComponentType = elements.getClass().getComponentType();
return (Number.class.isAssignableFrom(arrayComponentType));
}
@Override
public String getDataRangeReference() {
if (dataRange == null) {
throw new UnsupportedOperationException("Literal data source can not be expressed by reference.");
} else {
return dataRange;
}
}
@Override
public int getColIndex() {
return col;
}
}
private static class NumericalArrayDataSource extends AbstractArrayDataSource
implements XDDFNumericalDataSource {
private String formatCode;
public NumericalArrayDataSource(T[] elements, String dataRange) {
super(elements, dataRange);
}
public NumericalArrayDataSource(T[] elements, String dataRange, int col) {
super(elements, dataRange, col);
}
@Override
public String getFormatCode() {
return formatCode;
}
@Override
public void setFormatCode(String formatCode) {
this.formatCode = formatCode;
}
}
private static class StringArrayDataSource extends AbstractArrayDataSource
implements XDDFCategoryDataSource {
public StringArrayDataSource(String[] elements, String dataRange) {
super(elements, dataRange);
}
public StringArrayDataSource(String[] elements, String dataRange, int col) {
super(elements, dataRange, col);
}
}
private abstract static class AbstractCellRangeDataSource implements XDDFDataSource {
private final XSSFSheet sheet;
private final CellRangeAddress cellRangeAddress;
private final int numOfCells;
private XSSFFormulaEvaluator evaluator;
protected AbstractCellRangeDataSource(XSSFSheet sheet, CellRangeAddress cellRangeAddress) {
this.sheet = sheet;
// Make copy since CellRangeAddress is mutable.
this.cellRangeAddress = cellRangeAddress.copy();
this.numOfCells = this.cellRangeAddress.getNumberOfCells();
this.evaluator = sheet.getWorkbook().getCreationHelper().createFormulaEvaluator();
}
@Override
public int getPointCount() {
return numOfCells;
}
@Override
public boolean isReference() {
return true;
}
@Override
public int getColIndex() {
return cellRangeAddress.getFirstColumn();
}
@Override
public String getDataRangeReference() {
return cellRangeAddress.formatAsString(sheet.getSheetName(), true);
}
protected CellValue getCellValueAt(int index) {
if (index < 0 || index >= numOfCells) {
throw new IndexOutOfBoundsException(
"Index must be between 0 and " + (numOfCells - 1) + " (inclusive), given: " + index);
}
int firstRow = cellRangeAddress.getFirstRow();
int firstCol = cellRangeAddress.getFirstColumn();
int lastCol = cellRangeAddress.getLastColumn();
int width = lastCol - firstCol + 1;
int rowIndex = firstRow + index / width;
int cellIndex = firstCol + index % width;
XSSFRow row = sheet.getRow(rowIndex);
return (row == null) ? null : evaluator.evaluate(row.getCell(cellIndex));
}
}
private static class NumericalCellRangeDataSource extends AbstractCellRangeDataSource
implements XDDFNumericalDataSource {
protected NumericalCellRangeDataSource(XSSFSheet sheet, CellRangeAddress cellRangeAddress) {
super(sheet, cellRangeAddress);
}
private String formatCode;
@Override
public String getFormatCode() {
return formatCode;
}
@Override
public void setFormatCode(String formatCode) {
this.formatCode = formatCode;
}
@Override
public Double getPointAt(int index) {
CellValue cellValue = getCellValueAt(index);
if (cellValue != null && cellValue.getCellType() == CellType.NUMERIC) {
return Double.valueOf(cellValue.getNumberValue());
} else {
return null;
}
}
@Override
public boolean isNumeric() {
return true;
}
}
private static class StringCellRangeDataSource extends AbstractCellRangeDataSource
implements XDDFCategoryDataSource {
protected StringCellRangeDataSource(XSSFSheet sheet, CellRangeAddress cellRangeAddress) {
super(sheet, cellRangeAddress);
}
@Override
public String getPointAt(int index) {
CellValue cellValue = getCellValueAt(index);
if (cellValue != null && cellValue.getCellType() == CellType.STRING) {
return cellValue.getStringValue();
} else {
return null;
}
}
@Override
public boolean isNumeric() {
return false;
}
}
}