/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.resource.adapter.google.gdata;
import java.io.IOException;
import java.util.List;
import org.teiid.resource.adapter.google.SpreadsheetManagedConnectionFactory;
import org.teiid.resource.adapter.google.dataprotocol.GoogleDataProtocolAPI;
import org.teiid.translator.google.api.SpreadsheetOperationException;
import org.teiid.translator.google.api.metadata.Column;
import org.teiid.translator.google.api.metadata.SpreadsheetInfo;
import org.teiid.translator.google.api.metadata.Worksheet;
import com.google.gdata.data.spreadsheet.SpreadsheetEntry;
import com.google.gdata.data.spreadsheet.WorksheetEntry;
import com.google.gdata.util.ServiceException;
/**
* Creates metadata by using GData API.
*
* We retrieve worksheet names and possibly headers
* @author fnguyen
*
*/
public class SpreadsheetMetadataExtractor {
private GDataClientLoginAPI gdataAPI = null;
private GoogleDataProtocolAPI visualizationAPI= null;
public GoogleDataProtocolAPI getVisualizationAPI() {
return visualizationAPI;
}
public void setVisualizationAPI(GoogleDataProtocolAPI visualizationAPI) {
this.visualizationAPI = visualizationAPI;
}
public GDataClientLoginAPI getGdataAPI() {
return gdataAPI;
}
public void setGdataAPI(GDataClientLoginAPI gdataAPI) {
this.gdataAPI = gdataAPI;
}
public SpreadsheetInfo extractMetadata(String spreadsheetName, boolean isKey){
SpreadsheetEntry sentry = gdataAPI.getSpreadsheetEntry(spreadsheetName, isKey);
SpreadsheetInfo metadata = new SpreadsheetInfo(spreadsheetName);
metadata.setSpreadsheetKey(sentry.getKey());
try {
for (WorksheetEntry wentry : sentry.getWorksheets()) {
String title = wentry.getTitle().getPlainText();
Worksheet worksheet = metadata.createWorksheet(title);
worksheet.setId(wentry.getId().substring(wentry.getId().lastIndexOf('/')+1));
List<Column> cols = visualizationAPI.getMetadata(sentry.getKey(), title);
if(!cols.isEmpty()){
if(cols.get(0).getLabel()!=null){
worksheet.setHeaderEnabled(true);
}
}
for(Column c: cols){
worksheet.addColumn(c.getLabel()!=null ? c.getLabel(): c.getAlphaName(), c);
}
}
} catch (IOException ex) {
throw new SpreadsheetOperationException(
SpreadsheetManagedConnectionFactory.UTIL.gs("metadata_error"), ex); //$NON-NLS-1$
} catch (ServiceException ex) {
throw new SpreadsheetOperationException(
SpreadsheetManagedConnectionFactory.UTIL.gs("metadata_error"), ex); //$NON-NLS-1$
}
return metadata;
}
}