import java.io.StringReader;
import java.util.Iterator;
import java.util.List;
+
import javax.xml.namespace.NamespaceContext;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.helpers.XSSFSingleXmlCell;
import org.apache.poi.xssf.usermodel.helpers.XSSFXmlColumnPr;
+import org.apache.xml.utils.PrefixResolver;
+import org.apache.xml.utils.PrefixResolverDefault;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
-import com.sun.org.apache.xml.internal.utils.PrefixResolver;
-import com.sun.org.apache.xml.internal.utils.PrefixResolverDefault;
-
-
/**
*
- * Imports data from an external XML to an XLSX to an XML according to one of the mapping defined.
- *
- * The output XML Schema must respect this limitations:
- *
- * - the input XML must be valid according to the XML Schema used in the mapping
- * - denormalized table mapping is not supported (see OpenOffice part 4: chapter 3.5.1.7)
- * - all the namespaces used in the document must be declared in the root node
- *
- *
- * @author Roberto Manicardi
- *
+ * Imports data from an external XML to an XLSX according to one of the mappings
+ * defined.The output XML Schema must respect this limitations:
+ * <ul>
+ * <li>the input XML must be valid according to the XML Schema used in the mapping</li>
+ * <li>denormalized table mapping is not supported (see OpenOffice part 4: chapter 3.5.1.7)</li>
+ * <li>all the namespaces used in the document must be declared in the root node</li>
+ * </ul>
*/
public class XSSFImportFromXML {
-
- private XSSFMap map;
-
- private static POILogger logger = POILogFactory.getLogger(XSSFImportFromXML.class);
-
- public XSSFImportFromXML(XSSFMap map){
-
- this.map = map;
-
-
- }
-
- /**
- * Imports an XML into the XLSX using the Custom XML mapping defined
- *
- * @param xmlInputString the XML to import
- * @throws SAXException raised if error occurs during XML parsing
- * @throws XPathExpressionException raised if error occurs during XML navigation
- */
- public void importFromXML(String xmlInputString) throws SAXException, XPathExpressionException{
-
- try{
-
- DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
- factory.setNamespaceAware(true);
- DocumentBuilder builder = factory.newDocumentBuilder();
-
- Document doc = builder.parse(new InputSource(new StringReader(xmlInputString.trim())));
-
- List<XSSFSingleXmlCell> singleXmlCells = map.getRelatedSingleXMLCell();
-
- List<Table> tables = map.getRelatedTables();
-
- XPathFactory xpathFactory = XPathFactory.newInstance();
- XPath xpath = xpathFactory.newXPath();
-
-
-
- // Setting namespace context to XPath
- // Assuming that the namespace prefix in the mapping xpath is the same as the one used in the document
- final PrefixResolver resolver = new PrefixResolverDefault(doc.getDocumentElement());
-
- NamespaceContext ctx = new NamespaceContext() {
-
- public String getNamespaceURI(String prefix) {
- return resolver.getNamespaceForPrefix(prefix);
- }
- // Dummy implementation - not used!
- public Iterator getPrefixes(String val) {
- return null;
- }
- // Dummy implemenation - not used!
- public String getPrefix(String uri) {
- return null;
- }
- };
- xpath.setNamespaceContext(ctx);
-
-
-
-
- for(XSSFSingleXmlCell singleXmlCell :singleXmlCells ){
-
-
-
- String xpathString = singleXmlCell.getXpath();
-
- Node result = (Node) xpath.evaluate(xpathString,doc, XPathConstants.NODE);
- String textContent = result.getTextContent();
- logger.log(POILogger.DEBUG,"Extracting with xpath "+xpathString+" : value is '"+textContent+"'");
- XSSFCell cell = singleXmlCell.getReferencedCell();
- logger.log(POILogger.DEBUG,"Setting '"+textContent+"' to cell "+cell.getColumnIndex()+"-"+cell.getRowIndex()+" in sheet "+cell.getSheet().getSheetName());
- cell.setCellValue(textContent);
-
-
-
-
- }
-
- for(Table table : tables){
-
- String commonXPath = table.getCommonXpath();
-
- NodeList result = (NodeList) xpath.evaluate(commonXPath,doc, XPathConstants.NODESET);
-
- int rowOffset = table.getStartCellReference().getRow()+1;//the first row contains the table header
- int columnOffset = table.getStartCellReference().getCol()-1;
-
- for(int i = 0; i< result.getLength();i++){
-
- // TODO: implement support for denormalized XMLs (see OpenOffice part 4: chapter 3.5.1.7)
-
- for(XSSFXmlColumnPr xmlColumnPr: table.getXmlColumnPrs()){
-
- int localColumnId = (int)xmlColumnPr.getId();
-
- int rowId = rowOffset+i;
- int columnId = columnOffset+localColumnId;
-
-
- String localXPath = xmlColumnPr.getLocalXPath();
- localXPath = localXPath.substring(localXPath.substring(1).indexOf('/')+1);
-
- // Build an XPath to select the right node (assuming that the commonXPath != "/")
- String nodeXPath = commonXPath+"["+(i+1)+"]"+localXPath;
-
-
-
- // TODO: convert the data to the cell format
- String value = (String) xpath.evaluate(nodeXPath,result.item(i), XPathConstants.STRING);
- logger.log(POILogger.DEBUG,"Extracting with xpath "+nodeXPath+" : value is '"+value+"'");
- XSSFRow row = table.getXSSFSheet().getRow(rowId);
- if(row==null){
- row = table.getXSSFSheet().createRow(rowId);
- }
-
- XSSFCell cell = row.getCell(columnId);
- if(cell==null){
- cell = row.createCell(columnId);
- }
- logger.log(POILogger.DEBUG,"Setting '"+value+"' to cell "+cell.getColumnIndex()+"-"+cell.getRowIndex()+" in sheet "+table.getXSSFSheet().getSheetName());
- cell.setCellValue(value.trim());
-
- }
-
-
-
- }
-
-
-
- }
- }catch(IOException e){
- //Thrown by StringReader
- e.printStackTrace();
- }catch(ParserConfigurationException e){
- //Thrown by DocumentBuilderFactory
- e.printStackTrace();
- }
-
- }
-
+ private XSSFMap map;
+
+ private static POILogger logger = POILogFactory.getLogger(XSSFImportFromXML.class);
+
+ public XSSFImportFromXML(XSSFMap map) {
+ this.map = map;
+ }
+
+ /**
+ * Imports an XML into the XLSX using the Custom XML mapping defined
+ *
+ * @param xmlInputString the XML to import
+ * @throws SAXException if error occurs during XML parsing
+ * @throws XPathExpressionException if error occurs during XML navigation
+ * @throws ParserConfigurationException if there are problems with XML parser configuration
+ * @throws IOException if there are problems reading the input string
+ */
+ public void importFromXML(String xmlInputString) throws SAXException, XPathExpressionException, ParserConfigurationException, IOException {
+
+ DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+ factory.setNamespaceAware(true);
+ DocumentBuilder builder = factory.newDocumentBuilder();
+
+ Document doc = builder.parse(new InputSource(new StringReader(xmlInputString.trim())));
+
+ List<XSSFSingleXmlCell> singleXmlCells = map.getRelatedSingleXMLCell();
+
+ List<Table> tables = map.getRelatedTables();
+
+ XPathFactory xpathFactory = XPathFactory.newInstance();
+ XPath xpath = xpathFactory.newXPath();
+
+ // Setting namespace context to XPath
+ // Assuming that the namespace prefix in the mapping xpath is the
+ // same as the one used in the document
+ final PrefixResolver resolver = new PrefixResolverDefault(doc.getDocumentElement());
+
+ NamespaceContext ctx = new NamespaceContext() {
+
+ public String getNamespaceURI(String prefix) {
+ return resolver.getNamespaceForPrefix(prefix);
+ }
+
+ // Dummy implementation - not used!
+ public Iterator getPrefixes(String val) {
+ return null;
+ }
+
+ // Dummy implemenation - not used!
+ public String getPrefix(String uri) {
+ return null;
+ }
+ };
+ xpath.setNamespaceContext(ctx);
+
+ for (XSSFSingleXmlCell singleXmlCell : singleXmlCells) {
+
+ String xpathString = singleXmlCell.getXpath();
+ Node result = (Node) xpath.evaluate(xpathString, doc, XPathConstants.NODE);
+ String textContent = result.getTextContent();
+ logger.log(POILogger.DEBUG, "Extracting with xpath " + xpathString + " : value is '" + textContent + "'");
+ XSSFCell cell = singleXmlCell.getReferencedCell();
+ logger.log(POILogger.DEBUG, "Setting '" + textContent + "' to cell " + cell.getColumnIndex() + "-" + cell.getRowIndex() + " in sheet "
+ + cell.getSheet().getSheetName());
+ cell.setCellValue(textContent);
+ }
+
+ for (Table table : tables) {
+
+ String commonXPath = table.getCommonXpath();
+ NodeList result = (NodeList) xpath.evaluate(commonXPath, doc, XPathConstants.NODESET);
+ int rowOffset = table.getStartCellReference().getRow() + 1;// the first row contains the table header
+ int columnOffset = table.getStartCellReference().getCol() - 1;
+
+ for (int i = 0; i < result.getLength(); i++) {
+
+ // TODO: implement support for denormalized XMLs (see
+ // OpenOffice part 4: chapter 3.5.1.7)
+
+ for (XSSFXmlColumnPr xmlColumnPr : table.getXmlColumnPrs()) {
+
+ int localColumnId = (int) xmlColumnPr.getId();
+ int rowId = rowOffset + i;
+ int columnId = columnOffset + localColumnId;
+ String localXPath = xmlColumnPr.getLocalXPath();
+ localXPath = localXPath.substring(localXPath.substring(1).indexOf('/') + 1);
+
+ // Build an XPath to select the right node (assuming
+ // that the commonXPath != "/")
+ String nodeXPath = commonXPath + "[" + (i + 1) + "]" + localXPath;
+
+ // TODO: convert the data to the cell format
+ String value = (String) xpath.evaluate(nodeXPath, result.item(i), XPathConstants.STRING);
+ logger.log(POILogger.DEBUG, "Extracting with xpath " + nodeXPath + " : value is '" + value + "'");
+ XSSFRow row = table.getXSSFSheet().getRow(rowId);
+ if (row == null) {
+ row = table.getXSSFSheet().createRow(rowId);
+ }
+
+ XSSFCell cell = row.getCell(columnId);
+ if (cell == null) {
+ cell = row.createCell(columnId);
+ }
+ logger.log(POILogger.DEBUG, "Setting '" + value + "' to cell " + cell.getColumnIndex() + "-" + cell.getRowIndex() + " in sheet "
+ + table.getXSSFSheet().getSheetName());
+ cell.setCellValue(value.trim());
+
+ }
+
+ }
+
+ }
+
+ }
}
projects / poi.git / commitdiff