com.sap.cds.ql.cqn

Class CqnAnalyzer

java.lang.Object

com.sap.cds.ql.cqn.CqnAnalyzer

public final class CqnAnalyzer
extends Object

API to introspect CqnStructuredTypeRef(s) and CqnStatement(s)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	CqnAnalyzer.CqnAnalyzerSPI Service Provider Interface for the CqnAnalyzer.

Method Summary

Modifier and Type	Method and Description
AnalysisResult	analyze(CqnDelete delete) Analyzes the ref and where condition of the given CqnDelete.
AnalysisResult	analyze(CqnSelect select) Analyzes the ref and where condition of the given CqnSelect.
AnalysisResult	analyze(CqnStructuredTypeRef ref) Analyzes the Segment(s) of the given CqnStructuredTypeRef.
AnalysisResult	analyze(CqnUpdate update) Analyzes the ref and where condition of the given CqnUpdate.
static CqnAnalyzer	create(CdsModel model) Creates an instance of CqnAnalyzer.
static CqnAnalyzer	create(Supplier<CdsModel> modelSupplier) Creates an instance of CqnAnalyzer.
static boolean	isCountQuery(CqnStatement cqn) Returns true if the given CQN statement is a query with a single count item on the select list.
Iterable<ResolvedRefItem>	resolveRefItems(CqnSelect query)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isCountQuery

public static boolean isCountQuery(CqnStatement cqn)

Returns true if the given CQN statement is a query with a single count item on the select list.

Parameters:

cqn - the CQN statement

Returns:

true if the given statement is a count query

create

public static CqnAnalyzer create(CdsModel model)

Creates an instance of CqnAnalyzer.

Parameters:

model - the CdsModel

Returns:

the CqnAnalyzer instance

create

public static CqnAnalyzer create(Supplier<CdsModel> modelSupplier)

Creates an instance of CqnAnalyzer.

Parameters:

modelSupplier - the CdsModel supplier

Returns:

the CqnAnalyzer instance

analyze

public AnalysisResult analyze(CqnStructuredTypeRef ref)

Analyzes the Segment(s) of the given CqnStructuredTypeRef.

Parameters:

ref - the CqnStructuredTypeRef to be analyzed

Returns:

the AnalysisResult with information on the segments of the CqnStructuredTypeRef

analyze

public AnalysisResult analyze(CqnSelect select)

Analyzes the ref and where condition of the given CqnSelect.

Parameters:

select - the CqnSelect statement to be analyzed

Returns:

the AnalysisResult with information on the ref Segment(s) and where condition of the select

analyze

public AnalysisResult analyze(CqnUpdate update)

Analyzes the ref and where condition of the given CqnUpdate. The update data is not considered.

Parameters:

update - the CqnUpdate statement to be analyzed

Returns:

the AnalysisResult with information on the ref Segment(s) and where condition of the update

analyze

public AnalysisResult analyze(CqnDelete delete)

Analyzes the ref and where condition of the given CqnDelete.

Parameters:

delete - the CqnDelete statement to be analyzed

Returns:

the AnalysisResult with information on the ref Segment(s) and where condition of the delete

resolveRefItems

@Beta
public Iterable<ResolvedRefItem> resolveRefItems(CqnSelect query)