org.apache.derby.impl.sql.execute
Class GrantRoleConstantAction

java.lang.Object
  org.apache.derby.impl.sql.execute.DDLConstantAction
      org.apache.derby.impl.sql.execute.GrantRoleConstantAction

All Implemented Interfaces:

ConstantAction

 class GrantRoleConstantAction
extends DDLConstantAction

This class performs actions that are ALWAYS performed for a GRANT role statement at execution time. Descriptors corresponding to the grants are stored in the SYS.SYSROLES table, along with the role definitions, cf CreateRoleConstantAction.

Field Summary

private java.util.List	grantees
private java.util.List	roleNames
private boolean	withAdminOption

Constructor Summary

GrantRoleConstantAction(java.util.List roleNames, java.util.List grantees)
Make the ConstantAction for a CREATE ROLE statement.

Method Summary

private void	checkCircularity(java.lang.String role, java.lang.String grantee, java.lang.String grantor, TransactionController tc, DataDictionary dd) Check that allowing this grant to go ahead does nto create a circularity in the GRANT role relation graph, cf.
void	executeConstantAction(Activation activation) This is the guts of the Execution-time logic for GRANT role.
java.lang.String	toString()

Methods inherited from class org.apache.derby.impl.sql.execute.DDLConstantAction

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

Methods inherited from class java.lang.Object

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

Field Detail

roleNames

private java.util.List roleNames

grantees

private java.util.List grantees

withAdminOption

private final boolean withAdminOption

See Also:

Constant Field Values

Constructor Detail

GrantRoleConstantAction

public GrantRoleConstantAction(java.util.List roleNames,
                               java.util.List grantees)

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

Parameters:

roleNames - List of the names of the roles being granted

grantees - List of the authorization ids granted to role

Method Detail

executeConstantAction

public void executeConstantAction(Activation activation)
                           throws StandardException

This is the guts of the Execution-time logic for GRANT role.

Parameters:

activation - The execution environment for this constant action.

Throws:

StandardException - Thrown on failure

See Also:

ConstantAction.executeConstantAction(org.apache.derby.iapi.sql.Activation)

checkCircularity

private void checkCircularity(java.lang.String role,
                              java.lang.String grantee,
                              java.lang.String grantor,
                              TransactionController tc,
                              DataDictionary dd)
                       throws StandardException

Check that allowing this grant to go ahead does nto create a circularity in the GRANT role relation graph, cf. Section 12.5, Syntax rule 1 of ISO/IEC 9075-2 2003.

Parameters:

role - The role about to be granted

grantee - The role to which role is to be granted

grantor - Who does the granting

Throws:

StandardException - normal error policy. Throws AUTH_ROLE_GRANT_CIRCULARITY if a circularity is detected.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object