org.apache.calcite.rel

Interface RelReferentialConstraint

All Known Implementing Classes:

RelReferentialConstraintImpl

public interface RelReferentialConstraint

Interface for a referential constraint, i.e., Foreign-Key - Unique-Key relationship, between two tables.

Method Summary

Modifier and Type	Method and Description
List<IntPair>	getColumnPairs() The (source, target) column ordinals.
default int	getNumColumns() Deprecated. Use getColumnPairs().size()
List<String>	getSourceQualifiedName() The qualified name of the referencing table, e.g.
List<String>	getTargetQualifiedName() The qualified name of the referenced table, e.g.

Method Detail

getNumColumns

@Deprecated
default int getNumColumns()

Deprecated. Use getColumnPairs().size()

Returns the number of columns in the keys.

getSourceQualifiedName

List<String> getSourceQualifiedName()

The qualified name of the referencing table, e.g. DEPT.

getTargetQualifiedName

List<String> getTargetQualifiedName()

The qualified name of the referenced table, e.g. EMP.

getColumnPairs

List<IntPair> getColumnPairs()

The (source, target) column ordinals.