Bug 176436 Charts Imported from Libraries do not update when libraries change
During a live presentation of BIRT at EclipseCon, we came across a rather embarassing issue. When charts are included in a library, and imported into a report design from a library, any changes to the library instance of the chart do not reflect in the report itself.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
if ( designerState.getContentAsBlob( ) != null )
			{
				byte[] data = base.encode( designerState.getContentAsBlob( ) );
				String value = new String( data, OdaDesignerState.CHARSET );
				if ( value.length( ) < IndentableXMLWriter.MAX_CHARS_PER_LINE )
					writeEntry( DesignSchemaConstants.PROPERTY_TAG,
							OdaDesignerState.CONTENT_AS_BLOB_MEMBER, value,
							false );
				else
					writeLongIndentText( DesignSchemaConstants.PROPERTY_TAG,
							OdaDesignerState.CONTENT_AS_BLOB_MEMBER, value );
			}
		}
		catch ( UnsupportedEncodingException e )
		{
			assert false;
		}
		writer.endElement( );
	}
	/**
	 * Writes the content tree out to the file.
	 * 
	 * @param tree
	 *            the tree to write out
	 */
	protected void writeContentTree( ContentTree tree )
	{
		if ( tree == null || tree.isEmpty( ) )
			return;
		List children = tree.getChildren( );