Bug 321474 Refactor data set editor pages' codes[28816]
Build Identifier: 20100729 Refactor data set editor pages' codes. Reproducible: Always
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/data/ui/util/DataSetProvider.java
import org.eclipse.birt.report.model.api.ParamBindingHandle;
import org.eclipse.birt.report.model.api.PropertyHandle;
import org.eclipse.birt.report.model.api.ResultSetColumnHandle;
import org.eclipse.birt.report.model.api.ScriptLibHandle;
import org.eclipse.birt.report.model.api.activity.SemanticException;
import org.eclipse.birt.report.model.api.elements.DesignChoiceConstants;
import org.eclipse.birt.report.model.api.elements.structures.ComputedColumn;
import org.eclipse.birt.report.model.api.elements.structures.ResultSetColumn;
import org.eclipse.birt.report.model.api.metadata.PropertyValueException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.Platform;
import org.osgi.framework.Bundle;
/**
 * 
 * Utility class to get meta data and data from data set
 * 
 */
public final class DataSetProvider
{
	private static final String BIRT_SCRIPTLIB = "/birt/scriptlib";
	private static final String BIRT_CLASSES = "/birt/WEB-INF/classes/";
	private static final String VIEWER_NAMESPACE = "org.eclipse.birt.report.viewer";
	private static DataSetProvider instance = null;
	
	private transient Hashtable htColumns = new Hashtable( 10 );
	private static Hashtable htDataSourceExtensions = new Hashtable( 10 );
	private transient Hashtable sessionTable = new Hashtable( 10 );
	
	private static final char RENAME_SEPARATOR = '_';