com.sap.ip.bi.sdk.dac.relational.query
Interface IBIQuery

All Superinterfaces:

IBIQueryRepository

public interface IBIQuery

extends IBIQueryRepository

A relational query model based on the Expressions package of the Common Warehouse Metamodel. The Expressions package supports the definition of arbitrary expression trees. Expression trees are based on a functional view of expressions, using the prefix notation to allow for simple representation within this package. For example, the expression a+b could be translated into sum(a,b).

This model is semantic-independent, meaning that the semantics of an expression -- for example, SQL generation -- are not part of this model, and are left to the consumer of an expression instance.

Since:

3.50

See Also:

"See the Common Warehouse Metamodel on the Internet"

Method Summary

ResultSet	execute() Retrieves the result set of the current query.
IBICommandProcessor	getCommandProcessor() Retrieves the command processor for this query.
Object	getExpression() Retrieves the current query expression, bypassing the Command Processor.
void	setExpression(Object expression) Sets the query expression, bypassing the Command Processor.
boolean	supports(IBIRelational.Supports feature) Checks whether this feature is supported.
void	synchronize() Synchronizes the command processor with the query.

Methods inherited from interface com.sap.ip.bi.sdk.dac.relational.query.IBIQueryRepository

getRefPackage

Method Detail

setExpression

public void setExpression(Object expression)
                   throws BIResourceException

Sets the query expression, bypassing the Command Processor.

Parameters:

expression - the query expression

Throws:

BIResourceException - if the type of the query expression is not supported

See Also:

getExpression()

getExpression

public Object getExpression()
                     throws BIResourceException

Retrieves the current query expression, bypassing the Command Processor.

Returns:

the query expression

Throws:

BIResourceException - if this operation fails

See Also:

setExpression(java.lang.Object)

execute

public ResultSet execute()
                  throws BIResourceException

Retrieves the result set of the current query.

Returns:

the result set

Throws:

BIResourceException - if the query execution fails

getCommandProcessor

public IBICommandProcessor getCommandProcessor()
                                        throws BIResourceException

Retrieves the command processor for this query.

Returns:

the command processor

Throws:

BIResourceException - if the command processor could not be instantiated

supports

public boolean supports(IBIRelational.Supports feature)

Checks whether this feature is supported.

Parameters:

feature - the feature

Returns:

true if this feature is supported; false otherwise

synchronize

public void synchronize()
                 throws BIResourceException

Synchronizes the command processor with the query.

Throws:

BIResourceException - if an error occurs during the generation of the expression