Class CreateRoleConstantAction

java.lang.Object

org.apache.derby.impl.sql.execute.DDLConstantAction

org.apache.derby.impl.sql.execute.CreateRoleConstantAction

All Implemented Interfaces:

ConstantAction

class CreateRoleConstantAction
extends DDLConstantAction

This class performs actions that are ALWAYS performed for a CREATE ROLE statement at execution time. These SQL objects are stored in the SYS.SYSROLES table.

Field Summary

Fields

Modifier and Type	Field	Description
private String	roleName

Fields inherited from interface ConstantAction

WHEN_MATCHED_THEN_DELETE, WHEN_MATCHED_THEN_UPDATE, WHEN_NOT_MATCHED_THEN_INSERT

Constructor Summary

Constructors

Constructor	Description
CreateRoleConstantAction(String roleName)	Make the ConstantAction for a CREATE ROLE statement.

Method Summary

Modifier and Type	Method	Description
void	executeConstantAction(Activation activation)	This is the guts of the Execution-time logic for CREATE ROLE.
private boolean	knownUser(String roleName, String currentUser, LanguageConnectionContext lcc, DataDictionary dd, TransactionController tc)	Heuristically, try to determine is a proposed role identifier is already known to Derby as a user name.
String	toString()

Methods inherited from class DDLConstantAction

addColumnDependencies, adjustUDTDependencies, adjustUDTDependencies, constructToString, getAndCheckSchemaDescriptor, getSchemaDescriptorForCreate, lockTableForDDL, storeConstraintDependenciesOnPrivileges, storeViewTriggerDependenciesOnPrivileges

Methods inherited from class Object

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

Field Details

roleName

private String roleName

Constructor Details

CreateRoleConstantAction

public CreateRoleConstantAction(String roleName)

Make the ConstantAction for a CREATE ROLE statement. When executed, will create a role by the given name.

Parameters:

roleName - The name of the role being created

Method Details

executeConstantAction

public void executeConstantAction(Activation activation)
                           throws StandardException

This is the guts of the Execution-time logic for CREATE ROLE.

Parameters:

activation - The execution environment for this constant action.

Throws:

StandardException - Thrown on failure

See Also:

• ConstantAction.executeConstantAction(Activation)

toString

public String toString()

Overrides:

toString in class Object

knownUser

private boolean knownUser(String roleName,
 String currentUser,
 LanguageConnectionContext lcc,
 DataDictionary dd,
 TransactionController tc)
                   throws StandardException

Heuristically, try to determine is a proposed role identifier is already known to Derby as a user name. Method: If BUILTIN authentication is used, check if there is such a user. If external authentication is used, we lose. If there turns out to be collision, and we can't detect it here, we should block such a user from connecting (FIXME), since there is now a role with that name.

Throws:

StandardException