Features Deprecated in Virtual DataPort 7.0¶
Due to the introduction of new features or changes in existing ones, some features of Denodo that are available in previous versions have been deprecated.
Deprecated features are supported in the current version. However, they are not actively maintained and may be removed in the next major version of the Denodo Platform. We strongly recommend planning to stop using deprecated features.
This section lists the features that are currently deprecated in Virtual DataPort 7.0. This list is updated whenever a feature is marked as deprecated.
Last update of this list: Feb 22, 2021.
Data Type “Date”¶
Starting with Denodo 7.0, the data type “date” is deprecated, although is maintained for compatibility reasons. The fields with this data type will behave in the same way as in prior versions 6.0. Instead use the new types: localdate, time, timestamp or timestamptz.
Contains, Containsand, Containsor and Iscontained Operators¶
Starting with Denodo 7.0, the following operators are deprecated and will be removed from the next major version of Denodo (Denodo 8.0).
These operators do not belong to the SQL standard. Therefore, tools that generate SQL automatically (e.g. Business Intelligence tools) never use these operators.
contains can only be used in SQL queries that are pushed down to Google Search Engine, Aracne or custom wrappers that were developed
specifically to support this operator.
iscontained can be replaced with the function POSITION and the operator
field1 containsand ('AZ', 'CA')
POSITION(UPPER('AZ') IN UPPER(field1)) > 0 AND POSITION(UPPER('CA') IN UPPER(field1)) > 0
field1 containsor ('AZ', 'CA')
POSITION(UPPER('AZ') IN UPPER(field1)) > 0 OR POSITION(UPPER('CA') IN UPPER(field1)) > 0
field1 iscontained ('Cali', 'California');
POSITION(UPPER(field1) IN UPPER('Cali')) > 0 AND POSITION(UPPER(field1) IN UPPER('California')) > 0
These examples apply the function UPPER to the values involved because the operators containsand, containsor and iscontained are case-insensitive.
Starting with Denodo 6.0, the
SQLFRAGMENT clause of the
CREATE WRAPPER JDBC statement has
Syntax ALTER TABLE <base view name> ADD SEARCHMETHOD¶
Starting with Denodo 6.0, the syntax
ALTER TABLE <base view name>
ADD SEARCHMETHOD is
When creating a base view, define the search methods in the
CREATE TABLE statement instead of executing a
CREATE TABLE and
then, adding the search methods with the statement
This reduces the number of statements Virtual DataPort has to process.
For example, instead of running this:
CREATE TABLE internet_inc I18N us_est ( iinc_id:long, summary:text, ... ... ); ALTER TABLE internet_inc CACHE OFF TIMETOLIVEINCACHE DEFAULT ADD SEARCHMETHOD internet_inc( I18N us_est CONSTRAINTS ( ADD iinc_id (any) OPT ANY ADD summary (any) OPT ANY ... ... ) OUTPUTLIST (iinc_id, specific_field1, specific_field2, summary, taxid, ttime ) WRAPPER (jdbc internet_inc) );
Run the following (i.e. just one command)
CREATE TABLE internet_inc I18N us_est ( iinc_id:long, summary:text, ... ... ) CACHE OFF TIMETOLIVEINCACHE DEFAULT ADD SEARCHMETHOD internet_inc( I18N us_est CONSTRAINTS ( ADD iinc_id (any) OPT ANY ADD summary (any) OPT ANY ... ... ) OUTPUTLIST (iinc_id, specific_field1, specific_field2, summary, taxid, ttime ) WRAPPER (jdbc internet_inc) );
Parameters of the CONTEXT Clause of SELECT Statements¶
Starting with Denodo 5.5, the parameter
SELECTstatements is deprecated.
The only reason to use it is to specify at runtime the value of the parameter “begin delimiter” of a DF data source. Instead, enable the option Start delimiter from variable of the data source.
Starting with Denodo 7.0, the parameter
SELECTstatements is deprecated and it will be removed in the next major version (Denodo 8.0). Instead of using this parameter on the queries, set the query plan on the view.
Starting with Denodo 7.0, the following functions are deprecated and may be removed in future versions of the Denodo Platform:
Data Sources: Decrypt Filter¶
Starting with Denodo 7.0, the filter Decrypt (PBE with MD5 and DES) is deprecated. This is the filter you can set in the data sources DF, JSON and XML.
This option is deprecated because the DES encryption algorithm is no longer considered secure and it should not be used.
Aracne Data Sources¶
Starting with Denodo 7.0, the Aracne module has been deprecated so the administration tool no longer supports creating Aracne data sources. However, if they have been imported from a previous version, they can be opened.
Starting with Denodo 7.0, the Google Search data sources have been deprecated.
Denodo Stored Procedures¶
The following stored procedures included out-of-the box in Virtual DataPort are deprecated:
These procedures have been replaced with new ones because the old ones only return information about the database you are currently connected to. The new ones (“GET_…”) can obtain the same information from any database.
Denodo Stored Procedures API: getNumOfAffectedRows Method¶
Starting with Denodo 6.0, the method
getNumOfAffectedRows() of the stored procedures API has
been deprecated. Do not override this method in new stored procedures.
Although it is deprecated, the method will probably not be removed from future versions of the API in order to maintain binary compatibility with old stored procedures.
Denodo Custom Wrappers API: Deprecated Methods¶
The following methods of the API for custom wrappers have been deprecated. We suggest you remove all the references to these methods and constants from the code of your custom wrappers.
Starting with Denodo 6.0:
Starting with Denodo 7.0:
The constructor CustomWrapperFieldExpression.CustomWrapperFieldExpression(String, List<CustomWrapperFieldExpression>)
You should use method
CustomWrapperResult.addRow(Object)instead because it performs better.
The methods and constants related to the comparison operator
contains. These are:
Denodo JDBC Driver¶
Starting with Denodo 7.0, the parameter
wanOptimizedCalls of the JDBC driver has been deprecated.
This parameter is deprecated because in Denodo 7.0 its default value is true and there is no reason to set it to false. In previous versions, the default value of this parameter is false. If true the driver reduces the number of remote calls it sends to the Server. In addition, when the application closes a result set, the driver only sends a cancel request to the Server if there are still pending results. If false, the driver always sends the cancel request.
Denodo Web Services¶
The Denodo Web Services created with Virtual DataPort 4.7 or earlier versions are deprecated. These web services provide SOAP and REST capabilities. They still work, its VQL statements can be loaded into Virtual DataPort 7.0 and can be edited from the administration tool. However, no new web services of this type can be created.
Starting with Denodo 5.0, SOAP web services and REST web services are different elements. The reason is that SOAP web services are operation-oriented and REST web services are resource-oriented.
Starting with Denodo 7.0, the feature of publishing widgets is deprecated. This includes Web Parts for Microsoft SharePoint, Portlets v1.0 (JSR-168) and Portlets 2.0 (JSR-268).
Starting with Denodo 5.5, the scripts <DENODO_HOME>/bin/export and <DENODO_HOME>/bin/import have several parameters that are deprecated:
Instead, use the parameter
Data Catalog: Roles “selfserviceadmin”, “selfserviceexporter”¶
In the next major version of Denodo, the roles “selfserviceadmin” and “selfserviceexporter” will be removed. These roles exist in Denodo 7.0 to keep backward compatibility with Denodo 6.0 but you should not grant them to users anymore. Instead, grant the new roles “data_catalog_admin” and “data_catalog_exporter”, which are equivalent to “selfserviceadmin” and “selfserviceexporter” respectively.
In Denodo 7.0, the “Information Self-Service Tool” has been rebranded to “Data Catalog” and so have been these two roles.
Launching Several Instances of a Virtual DataPort Server¶
Starting with Denodo 7.0, the feature Launching Several Virtual DataPort Instances of the Same Installation is deprecated.
We advise against beginning to use this feature if you are not doing so already.
If you are already using it, in the next major version of Denodo (Denodo 8.0), configure Virtual DataPort to store the metadata in an external database. This allows you to create a cluster of Virtual DataPort servers, in which all the servers share the same external database.
Note that this feature that has been deprecated is not about starting two Virtual DataPort servers from two different installations of the Denodo Platform running on the same computer. Running two Virtual DataPort servers of different installations on the same computer is fully supported.
The Denodo4Eclipse plugin is deprecated. Instead, developers should follow the instructions of the article How to debug Denodo custom extensions with Eclipse of the Denodo Knowledge Base.
The main goal of this plugin is to debug the extensions you develop for Denodo. This article explains how to do it without having to use Eclipse nor having to install the plugin. This article is focused on Eclipse but you can also debug your extensions for Denodo using IntelliJ IDEA.