Package dev.frostlake.functions.table

Class PolicyReferencesFunction

java.lang.Object

dev.frostlake.functions.TableFunction

dev.frostlake.functions.table.PolicyReferencesFunction

public class PolicyReferencesFunction
extends TableFunction

INFORMATION_SCHEMA.POLICY_REFERENCES — every policy attached to one object, or every object one policy is attached to. It is THE readback surface for attachments: a masking or projection policy names its column in REF_COLUMN_NAME, while a row access or aggregation policy leaves that null and lists its argument columns in REF_ARG_COLUMN_NAMES.

It takes either POLICY_NAME => 'p' or the pair REF_ENTITY_NAME => 'o', REF_ENTITY_DOMAIN => 'TABLE'|'VIEW' — one of the two, never a mixture and never neither (live-verified, including the sentence that says so).

Constructor Summary

Constructors

Constructor	Description
PolicyReferencesFunction(Catalog catalog)

Method Summary

Modifier and Type	Method	Description
ResultSet	execute(List<Object> positionalArgs)	Execute the table function with positional arguments.
ResultSet	execute(Map<String,Object> namedArgs)	Execute the table function with named arguments
void	validateArgs(Map<String,Object> namedArgs)	Validate the arguments passed to the function

Methods inherited from class dev.frostlake.functions.TableFunction

getName

Methods inherited from class java.lang.Object

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

Constructor Details

PolicyReferencesFunction

public PolicyReferencesFunction(Catalog catalog)

Method Details

validateArgs

public void validateArgs(Map<String,Object> namedArgs)

Description copied from class: TableFunction

Validate the arguments passed to the function

Specified by:

validateArgs in class TableFunction

execute

public ResultSet execute(List<Object> positionalArgs)

Description copied from class: TableFunction

Execute the table function with positional arguments. Override this in user-defined table functions.

Overrides:

execute in class TableFunction

execute

public ResultSet execute(Map<String,Object> namedArgs)

Description copied from class: TableFunction

Execute the table function with named arguments

Specified by:

execute in class TableFunction