com.sas.storage.olap.sasmdx
Class OLAPDataSet

com.sas.storage.olap.sasmdx.OLAPDataSet

All Implemented Interfaces:

OLAPDataSetInterface, ResultSetInterface

public class OLAPDataSet
implements OLAPDataSetInterface

Contains the client side implementation for com.sas.storage.olap.OLAPDataSetInterface and the PerformanceTuningInterface. This implementation uses the IOM/OLAP interfaces provided by the SAS OLAP server.

Field Summary

Fields inherited from interface com.sas.storage.olap.OLAPDataSetInterface

DEFAULT_CONTEXT_TYPE, NO_CONTEXT_TYPE

Fields inherited from interface com.sas.storage.olap.ResultSetInterface

DEFAULT_END_CELL, DEFAULT_ENDCELL

Constructor Summary

OLAPDataSet()
default constructor

OLAPDataSet(java.lang.Object connection)
Create a OLAPDataSet object with the connection that is IMDXServer or ISession object

OLAPDataSet(java.lang.Object connection, java.util.Locale locale, java.lang.String queryStatement)
Create an OLAPDataSet with the passed in connection and query

OLAPDataSet(java.lang.Object connection, java.util.Locale locale, java.lang.String queryStatement, int contextType)
Create an OLAPDataSet with the passed in connection and query

OLAPDataSet(java.lang.Object connection, java.lang.String queryStatement)
Create an OLAPDataSet with the passed in connection and query

OLAPDataSet(java.lang.Object connection, java.lang.String queryStatement, int contextType)
Create an OLAPDataSet with the passed in connection and query

OLAPDataSet(java.lang.Object connection, java.lang.String queryStatement, java.lang.String queryId)
Create an OLAPDataSet with the passed in connection and query

OLAPDataSet(java.lang.String host, int port, java.lang.String username, java.lang.String password)
Create an OLAPDataSet with passed in connection properties.

OLAPDataSet(java.lang.String host, int port, java.lang.String username, java.lang.String password, java.util.Locale locale, java.lang.String queryStatement)
Create an OLAPDataSet with passed in connection properties.

OLAPDataSet(java.lang.String host, int port, java.lang.String username, java.lang.String password, java.lang.String queryStatement)
Create an OLAPDataSet with passed in connection properties.

Method Summary

void	cancelQuery()
void	close() Closes the result set and clears the cache
void	executeQuery() Executes a query that is set, using the setQueryStatement.
void	executeQuery(java.lang.String queryStatement) Execute a passed in query.
void	executeQuery(java.lang.String queryStatement, java.lang.String queryId) QueryStatement should have queryID appended to it otherwise the id will be ignored.
long	getCellCount() Get the number of cells for the query.
java.lang.Object[]	getCells(long startCell, long endCell) Get the unformatted cells starting at the start Ordinal upto end ordinal.
java.lang.Object	getConnection() Get the connection(IMDXServer) or session(ISession) object set on this class.
int	getContextType() Get the context type for this md dataset
java.lang.String	getCubeName() Get the cubename for this query.
MetadataInterface	getDatabaseMetadata() This method returns an instance of the MetadataInterface which defines all of the Cubes' metadata on the OLAP Server to which the model is connected.
java.lang.String[]	getFormattedCells(long startCell, long endCell) Get the formatted cells starting at the start Ordinal upto end ordinal.
java.util.Locale	getLocale() Return the locale used to create a session object
PerformanceTuning	getPerformanceTuning() This method returns a performanceTuning object on the model.
java.lang.String	getQueryId()
java.lang.String	getQueryStatement() Returns the most recent query statement.
ResultSetMetadataInterface	getResultSetMetadata() Returns the metadata that defines the structure of the ResultSet
boolean	isReadOnly() This implementation will always return true.
void	setCells(long startCell, long endCell, java.lang.Object[] cellValues) This method is not supported
void	setConnection(java.lang.Object connection) This method can use a connection object or a session object associated with a connection.
void	setContextType(int contextType) Set the contextType for this dataSet.
void	setFormattedCells(long startCell, long endCell, java.lang.String[] cellValues) This is not supported
void	setLocale(java.util.Locale locale) Set the Locale used to create the session.
void	setPerformanceTuning(PerformanceTuning performanceTuning) Set the PerformanceTuning Object on this model.
void	setQueryStatement(java.lang.String queryStatement) Set the query statement.
void	setQueryStatement(java.lang.String queryStatement, java.lang.String queryID)
void	setReadOnly(boolean readOnly) The readOnly state may only be set to true.

Constructor Detail

OLAPDataSet

public OLAPDataSet()
            throws OLAPException

default constructor

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.Object connection)
            throws OLAPException

Create a OLAPDataSet object with the connection that is IMDXServer or ISession object

Parameters:

connection - OLAPConnection

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.Object connection,
                   java.lang.String queryStatement)
            throws OLAPException

Create an OLAPDataSet with the passed in connection and query

Parameters:

connection - OLAPConnection associated with this OLAPDataSet or ISession associated with the connection

queryStatement - query for this OLAPDataSet

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.Object connection,
                   java.lang.String queryStatement,
                   java.lang.String queryId)
            throws OLAPException

Create an OLAPDataSet with the passed in connection and query

Parameters:

connection - OLAPConnection associated with this OLAPDataSet or ISession associated with the connection

queryStatement - query for this OLAPDataSet

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.String host,
                   int port,
                   java.lang.String username,
                   java.lang.String password)
            throws OLAPException

Create an OLAPDataSet with passed in connection properties.

Parameters:

host - connection host

port - connection port

username - connection username

password - connection password

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.String host,
                   int port,
                   java.lang.String username,
                   java.lang.String password,
                   java.lang.String queryStatement)
            throws OLAPException

Create an OLAPDataSet with passed in connection properties.

Parameters:

host - connection host

port - connection port

username - connection username

password - connection password

queryStatement - query for this dataset

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.Object connection,
                   java.util.Locale locale,
                   java.lang.String queryStatement)
            throws OLAPException

Create an OLAPDataSet with the passed in connection and query

Parameters:

connection - a connection associated with this OLAPDataSet. The connection can be IMDXServer or ISession object.

Locale - to be used with the connection

queryStatement - query for this OLAPDataSet

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.String host,
                   int port,
                   java.lang.String username,
                   java.lang.String password,
                   java.util.Locale locale,
                   java.lang.String queryStatement)
            throws OLAPException

Create an OLAPDataSet with passed in connection properties.

Parameters:

host - connection host

port - connection port

username - connection username

password - connection password

Locale - to be used with the connection

queryStatement - query for this dataset

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.Object connection,
                   java.util.Locale locale,
                   java.lang.String queryStatement,
                   int contextType)
            throws OLAPException

Create an OLAPDataSet with the passed in connection and query

Parameters:

connection - a connection associated with this OLAPDataSet. The connection can be IMDXServer or ISession object.

Locale - to be used with the connection

queryStatement - query for this OLAPDataSet

Throws:

OLAPException

OLAPDataSet

public OLAPDataSet(java.lang.Object connection,
                   java.lang.String queryStatement,
                   int contextType)
            throws OLAPException

Create an OLAPDataSet with the passed in connection and query

Parameters:

connection - OLAPConnection associated with this OLAPDataSet or ISession associated with the connection

queryStatement - query for this OLAPDataSet

Throws:

OLAPException

Method Detail

setContextType

public void setContextType(int contextType)
                    throws OLAPException

Set the contextType for this dataSet. The contextType determines whether to return the tuples with context or without context

Specified by:

setContextType in interface OLAPDataSetInterface

Parameters:

contextType - Currently only two context types defined, DEFAULT_CONTEXT_TYPE and NO_CONTEXT_TYPE

Throws:

OLAPException

getContextType

public int getContextType()
                   throws OLAPException

Get the context type for this md dataset

Specified by:

getContextType in interface OLAPDataSetInterface

Returns:

contextType Currently only two context types defined, DEFAULT_CONTEXT_TYPE and NO_CONTEXT_TYPE

Throws:

OLAPException

setLocale

public void setLocale(java.util.Locale locale)
               throws OLAPException

Set the Locale used to create the session. Setting the Locale after the connection has been established will not take effect until the connection is closed and recreated. If not locale is set, the connection will use the default locale.

Specified by:

setLocale in interface OLAPDataSetInterface

Throws:

OLAPException - if a database error occurs

getLocale

public java.util.Locale getLocale()
                           throws OLAPException

Return the locale used to create a session object

Specified by:

getLocale in interface OLAPDataSetInterface

Returns:

Locale used to create the session object or null if the connection is not established and locale is not set by the user.

Throws:

OLAPException - if a database error occurs

getConnection

public java.lang.Object getConnection()
                               throws OLAPException

Get the connection(IMDXServer) or session(ISession) object set on this class. The get method will return a session object if a session object is passed in, otherwise will return a connection object.

Specified by:

getConnection in interface OLAPDataSetInterface

Returns:

The connection to the OLAP server

Throws:

OLAPException - if a database error occurs

setConnection

public void setConnection(java.lang.Object connection)
                   throws OLAPException

This method can use a connection object or a session object associated with a connection. The connection type for this implementation is the com.sas.iom.SASMDX.IMDXServer. The session type for this implementation is com.sas.iom.SASMDX.ISession. The get method will return a session object if a session object is passed in, otherwise will return a conmnection object. This defines a connection to the SAS OLAP server.

Specified by:

setConnection in interface OLAPDataSetInterface

Parameters:

connection - the connection can be either IMDXServer or ISession

Throws:

OLAPException - if a database error occurs

getQueryId

public java.lang.String getQueryId()

executeQuery

public void executeQuery(java.lang.String queryStatement,
                         java.lang.String queryId)
                  throws OLAPException

QueryStatement should have queryID appended to it otherwise the id will be ignored.

Parameters:

queryStatement - a complete uery including the id

queryId - queryid to be used by sub queries (ancestor query)

Throws:

OLAPException

executeQuery

public void executeQuery(java.lang.String queryStatement)
                  throws OLAPException

Execute a passed in query. If the query is null, an exception is thrown

Specified by:

executeQuery in interface OLAPDataSetInterface

Parameters:

mdx - statement

Throws:

OLAPException - if a database error occurs

getCubeName

public java.lang.String getCubeName()
                             throws OLAPException

Get the cubename for this query. Currently the assumption is that the query can only conatin one cube name.

Specified by:

getCubeName in interface OLAPDataSetInterface

Returns:

name of the cube

Throws:

OLAPException - if the cubename cannot be

executeQuery

public void executeQuery()
                  throws OLAPException

Executes a query that is set, using the setQueryStatement.

Specified by:

executeQuery in interface OLAPDataSetInterface

Throws:

OLAPException - if a database error occurs

setQueryStatement

public void setQueryStatement(java.lang.String queryStatement)
                       throws OLAPException

Set the query statement. A query is not executed until executeQuery() method is called

Specified by:

setQueryStatement in interface OLAPDataSetInterface

Parameters:

queryStatement - The query to be executed

Throws:

OLAPException - if a database error occurs

setQueryStatement

public void setQueryStatement(java.lang.String queryStatement,
                              java.lang.String queryID)
                       throws OLAPException

Throws:

OLAPException

setReadOnly

public void setReadOnly(boolean readOnly)
                 throws OLAPException

The readOnly state may only be set to true. This implementation does not support updates.

Specified by:

setReadOnly in interface OLAPDataSetInterface

Parameters:

readOnly - The updateable state of the OLAPDataSet.

Throws:

OLAPException - If a database-access error occurs

getResultSetMetadata

public ResultSetMetadataInterface getResultSetMetadata()
                                                throws OLAPException

Description copied from interface: ResultSetInterface

Returns the metadata that defines the structure of the ResultSet

Specified by:

getResultSetMetadata in interface ResultSetInterface

Returns:

The ResultSetMetadata which defines the structure of the ResultSet.

Throws:

OLAPException - if a database error occurs

getQueryStatement

public java.lang.String getQueryStatement()
                                   throws OLAPException

Description copied from interface: ResultSetInterface

Returns the most recent query statement. This value should be used as a hint for the query that may have generated this ResultSet. It's possible that this value could be null or out of date if the ResultSet is not connected. It is also possible that this query is not in sync with the ResultSet. It could have been set, but not executed, in which case the ResultSet is not a product of this query.

Specified by:

getQueryStatement in interface ResultSetInterface

Returns:

The most recent query statement.

Throws:

OLAPException - if a database error occurs

isReadOnly

public boolean isReadOnly()
                   throws OLAPException

This implementation will always return true. The OLAPDataSet is not updateable.

Specified by:

isReadOnly in interface ResultSetInterface

Returns:

Indicates whether this OLAPDataSet is updateable

Throws:

OLAPException - If a database-access error occurs

getCells

public java.lang.Object[] getCells(long startCell,
                                   long endCell)
                            throws OLAPException

Get the unformatted cells starting at the start Ordinal upto end ordinal. Since this returns a block of cells, the number of cells may not be the same as requested.

Specified by:

getCells in interface ResultSetInterface

Parameters:

startCell - A zero-based ordinal position for the starting cell.

endCell - A zero-based ordinal position for the ending cell where DEFAULT_ENDCELL can be used to indicate all remaining cells

Returns:

The data in its raw format.

Throws:

OLAPException - if a database error occurs

getFormattedCells

public java.lang.String[] getFormattedCells(long startCell,
                                            long endCell)
                                     throws OLAPException

Get the formatted cells starting at the start Ordinal upto end ordinal. Since this returns a block of cells, the number of cells may not be the same as requested.

Specified by:

getFormattedCells in interface ResultSetInterface

Parameters:

startCell - A zero-based ordinal position for the starting cell.

endCell - A zero-based ordinal position for the ending cell where DEFAULT_ENDCELL can be used to indicate all remaining cells

Returns:

The formatted data.

Throws:

OLAPException - if a database error occurs

getCellCount

public long getCellCount()
                  throws OLAPException

Get the number of cells for the query.

Specified by:

getCellCount in interface ResultSetInterface

Returns:

The total number of cells defined in the ResultSet.

Throws:

OLAPException - if a database error occurs

setCells

public void setCells(long startCell,
                     long endCell,
                     java.lang.Object[] cellValues)
              throws OLAPException

This method is not supported

Specified by:

setCells in interface ResultSetInterface

Parameters:

startCell - A zero-based ordinal position for the starting cell.

endCell - A zero-based ordinal position for the ending cell.

cellValues - Sets the values for the cells.

Throws:

OLAPException - if a database error occurs

setFormattedCells

public void setFormattedCells(long startCell,
                              long endCell,
                              java.lang.String[] cellValues)
                       throws OLAPException

This is not supported

Specified by:

setFormattedCells in interface ResultSetInterface

Parameters:

startCell - A zero-based ordinal position for the starting cell.

endCell - A zero-based ordinal position for the ending cell.

cellValues - Sets the formatted values for the cells.

Throws:

OLAPException - if a database error occurs

close

public void close()
           throws OLAPException

Closes the result set and clears the cache

Specified by:

close in interface ResultSetInterface

Throws:

OLAPException - if a database error occurs

getPerformanceTuning

public PerformanceTuning getPerformanceTuning()
                                       throws OLAPException

This method returns a performanceTuning object on the model. This can be null if the query has not been set. User can create a new PerformanceTuning object and set it on the model. The returned object may be a different than the set object, in case of it being set on multiple models. The model checks for an existence of model (property) on the passed in object and if there is one, it makes a copy of the passed in object and sets it on this model. In other words there is one to one relationship between model and the performance tuning object.

Specified by:

getPerformanceTuning in interface OLAPDataSetInterface

Returns:

performanceTuning object

Throws:

OLAPException

setPerformanceTuning

public void setPerformanceTuning(PerformanceTuning performanceTuning)
                          throws OLAPException

Set the PerformanceTuning Object on this model. Nothing will happen if the object is null. Since each instance of model has its own performance tuning, if this object is derived from another model or it is already set on another model, a copy of the perfroamnceTuning object will be made before setting it on this model. In other words, a get may not return the same object as the set.

Specified by:

setPerformanceTuning in interface OLAPDataSetInterface

Parameters:

perfromanceTuning - An Object that has performanceTuning properties set on it. Null will not have any effect.

Throws:

OLAPException

getDatabaseMetadata

public MetadataInterface getDatabaseMetadata()
                                      throws OLAPException

Description copied from interface: OLAPDataSetInterface

This method returns an instance of the MetadataInterface which defines all of the Cubes' metadata on the OLAP Server to which the model is connected. Implementations which do not support this MetadataInterface should return null.

Specified by:

getDatabaseMetadata in interface OLAPDataSetInterface

Returns:

metadata An instance of the MetadataInterface that shares the same connection as the Data Model

Throws:

OLAPException - If a database error occurs

cancelQuery

public void cancelQuery()
                 throws OLAPException

Throws:

OLAPException