Package 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	Description
static interface	CqnAnalyzer.CqnAnalyzerSPI	Service Provider Interface for the CqnAnalyzer.

Method Summary

Modifier and Type	Method	Description
AnalysisResult	analyze(CqnFilterableStatement statement)	Analyzes the ref and where condition of the given CqnFilterableStatement.
AnalysisResult	analyze(CqnStructuredTypeRef ref)	Analyzes the Segment(s) of the given CqnStructuredTypeRef.
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 Details

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(CqnFilterableStatement statement)

Analyzes the ref and where condition of the given CqnFilterableStatement.

Parameters:

statement - the CqnFilterableStatement statement to be analyzed (CqnDelete, CqnUpdate, or CqnSelect)

Returns:

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

resolveRefItems

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