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Removed uses of internal JDK classes.

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Removed @author tag.
Dealt with exceprions properly.
General reformatting.

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@827905 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Ugo Cei 2009-10-21 07:11:00 +00:00
parent ebc7f3cb26
commit 3e82ec8035
1 changed files with 122 additions and 155 deletions
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127
src/ooxml/java/org/apache/poi/xssf/extractor/XSSFImportFromXML.java
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@ -21,6 +21,7 @@ import java.io.IOException;
import java.io.StringReader; import java.io.StringReader;
import java.util.Iterator; import java.util.Iterator;
import java.util.List; import java.util.List;
import javax.xml.namespace.NamespaceContext; import javax.xml.namespace.NamespaceContext;
import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilderFactory;
@ -38,29 +39,23 @@ import org.apache.poi.xssf.usermodel.XSSFMap;
import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.helpers.XSSFSingleXmlCell; import org.apache.poi.xssf.usermodel.helpers.XSSFSingleXmlCell;
import org.apache.poi.xssf.usermodel.helpers.XSSFXmlColumnPr; 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.Document;
import org.w3c.dom.Node; import org.w3c.dom.Node;
import org.w3c.dom.NodeList; import org.w3c.dom.NodeList;
import org.xml.sax.InputSource; import org.xml.sax.InputSource;
import org.xml.sax.SAXException; 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. * Imports data from an external XML to an XLSX according to one of the mappings
* * defined.The output XML Schema must respect this limitations:
* 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>
* - the input XML must be valid according to the XML Schema used in the mapping * <li>denormalized table mapping is not supported (see OpenOffice part 4: chapter 3.5.1.7)</li>
* - denormalized table mapping is not supported (see OpenOffice part 4: chapter 3.5.1.7) * <li>all the namespaces used in the document must be declared in the root node</li>
* - all the namespaces used in the document must be declared in the root node * </ul>
*
*
* @author Roberto Manicardi
*
*/ */
public class XSSFImportFromXML { public class XSSFImportFromXML {
@ -68,23 +63,20 @@ public class XSSFImportFromXML {
private static POILogger logger = POILogFactory.getLogger(XSSFImportFromXML.class); private static POILogger logger = POILogFactory.getLogger(XSSFImportFromXML.class);
public XSSFImportFromXML(XSSFMap map){ public XSSFImportFromXML(XSSFMap map) {
this.map = map; this.map = map;
} }
/** /**
* Imports an XML into the XLSX using the Custom XML mapping defined * Imports an XML into the XLSX using the Custom XML mapping defined
* *
* @param xmlInputString the XML to import * @param xmlInputString the XML to import
* @throws SAXException raised if error occurs during XML parsing * @throws SAXException if error occurs during XML parsing
* @throws XPathExpressionException raised if error occurs during XML navigation * @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{ public void importFromXML(String xmlInputString) throws SAXException, XPathExpressionException, ParserConfigurationException, IOException {
try{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true); factory.setNamespaceAware(true);
@ -99,10 +91,9 @@ public class XSSFImportFromXML {
XPathFactory xpathFactory = XPathFactory.newInstance(); XPathFactory xpathFactory = XPathFactory.newInstance();
XPath xpath = xpathFactory.newXPath(); XPath xpath = xpathFactory.newXPath();
// Setting namespace context to XPath // Setting namespace context to XPath
// Assuming that the namespace prefix in the mapping xpath is the same as the one used in the document // 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()); final PrefixResolver resolver = new PrefixResolverDefault(doc.getDocumentElement());
NamespaceContext ctx = new NamespaceContext() { NamespaceContext ctx = new NamespaceContext() {
@ -110,10 +101,12 @@ public class XSSFImportFromXML {
public String getNamespaceURI(String prefix) { public String getNamespaceURI(String prefix) {
return resolver.getNamespaceForPrefix(prefix); return resolver.getNamespaceForPrefix(prefix);
} }
// Dummy implementation - not used! // Dummy implementation - not used!
public Iterator getPrefixes(String val) { public Iterator getPrefixes(String val) {
return null; return null;
} }
// Dummy implemenation - not used! // Dummy implemenation - not used!
public String getPrefix(String uri) { public String getPrefix(String uri) {
return null; return null;
@ -121,89 +114,63 @@ public class XSSFImportFromXML {
}; };
xpath.setNamespaceContext(ctx); xpath.setNamespaceContext(ctx);
for (XSSFSingleXmlCell singleXmlCell : singleXmlCells) {
for(XSSFSingleXmlCell singleXmlCell :singleXmlCells ){
String xpathString = singleXmlCell.getXpath(); String xpathString = singleXmlCell.getXpath();
Node result = (Node) xpath.evaluate(xpathString, doc, XPathConstants.NODE);
Node result = (Node) xpath.evaluate(xpathString,doc, XPathConstants.NODE);
String textContent = result.getTextContent(); String textContent = result.getTextContent();
logger.log(POILogger.DEBUG,"Extracting with xpath "+xpathString+" : value is '"+textContent+"'"); logger.log(POILogger.DEBUG, "Extracting with xpath " + xpathString + " : value is '" + textContent + "'");
XSSFCell cell = singleXmlCell.getReferencedCell(); XSSFCell cell = singleXmlCell.getReferencedCell();
logger.log(POILogger.DEBUG,"Setting '"+textContent+"' to cell "+cell.getColumnIndex()+"-"+cell.getRowIndex()+" in sheet "+cell.getSheet().getSheetName()); logger.log(POILogger.DEBUG, "Setting '" + textContent + "' to cell " + cell.getColumnIndex() + "-" + cell.getRowIndex() + " in sheet "
+ cell.getSheet().getSheetName());
cell.setCellValue(textContent); cell.setCellValue(textContent);
} }
for(Table table : tables){ for (Table table : tables) {
String commonXPath = table.getCommonXpath(); 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;
NodeList result = (NodeList) xpath.evaluate(commonXPath,doc, XPathConstants.NODESET); for (int i = 0; i < result.getLength(); i++) {
int rowOffset = table.getStartCellReference().getRow()+1;//the first row contains the table header // TODO: implement support for denormalized XMLs (see
int columnOffset = table.getStartCellReference().getCol()-1; // OpenOffice part 4: chapter 3.5.1.7)
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;
for (XSSFXmlColumnPr xmlColumnPr : table.getXmlColumnPrs()) {
int localColumnId = (int) xmlColumnPr.getId();
int rowId = rowOffset + i;
int columnId = columnOffset + localColumnId;
String localXPath = xmlColumnPr.getLocalXPath(); String localXPath = xmlColumnPr.getLocalXPath();
localXPath = localXPath.substring(localXPath.substring(1).indexOf('/')+1); 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;
// 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 // TODO: convert the data to the cell format
String value = (String) xpath.evaluate(nodeXPath,result.item(i), XPathConstants.STRING); String value = (String) xpath.evaluate(nodeXPath, result.item(i), XPathConstants.STRING);
logger.log(POILogger.DEBUG,"Extracting with xpath "+nodeXPath+" : value is '"+value+"'"); logger.log(POILogger.DEBUG, "Extracting with xpath " + nodeXPath + " : value is '" + value + "'");
XSSFRow row = table.getXSSFSheet().getRow(rowId); XSSFRow row = table.getXSSFSheet().getRow(rowId);
if(row==null){ if (row == null) {
row = table.getXSSFSheet().createRow(rowId); row = table.getXSSFSheet().createRow(rowId);
} }
XSSFCell cell = row.getCell(columnId); XSSFCell cell = row.getCell(columnId);
if(cell==null){ if (cell == null) {
cell = row.createCell(columnId); cell = row.createCell(columnId);
} }
logger.log(POILogger.DEBUG,"Setting '"+value+"' to cell "+cell.getColumnIndex()+"-"+cell.getRowIndex()+" in sheet "+table.getXSSFSheet().getSheetName()); logger.log(POILogger.DEBUG, "Setting '" + value + "' to cell " + cell.getColumnIndex() + "-" + cell.getRowIndex() + " in sheet "
+ table.getXSSFSheet().getSheetName());
cell.setCellValue(value.trim()); cell.setCellValue(value.trim());
} }
}
}
}catch(IOException e){
//Thrown by StringReader
e.printStackTrace();
}catch(ParserConfigurationException e){
//Thrown by DocumentBuilderFactory
e.printStackTrace();
} }
} }
}
} }