org.apache.derby.iapi.sql.dictionary
Class StatementTablePermission

java.lang.Object
  org.apache.derby.iapi.sql.dictionary.StatementPermission
      org.apache.derby.iapi.sql.dictionary.StatementTablePermission

Direct Known Subclasses:

StatementColumnPermission

public class StatementTablePermission
extends StatementPermission

This class describes a table permission required by a statement.

Field Summary

(package private) int	privType
(package private) UUID	tableUUID

Constructor Summary

StatementTablePermission(UUID tableUUID, int privType)
Constructor for StatementTablePermission.

Method Summary

void	check(LanguageConnectionContext lcc, boolean forGrant, Activation activation)
boolean	equals(java.lang.Object obj) Routine to check if another instance of access descriptor matches this.
PermissionsDescriptor	getPermissionDescriptor(java.lang.String authid, DataDictionary dd) Get the PermissionsDescriptor for the passed authorization id for this object.
java.lang.String	getPrivName() Return privilege needed for this access as string
int	getPrivType() Return privilege access requested for this access descriptor
protected TableDescriptor	getTableDescriptor(DataDictionary dd)
UUID	getTableUUID() Return table UUID for this access descriptor
int	hashCode() Return hash code for this instance
protected boolean	hasPermissionOnTable(LanguageConnectionContext lcc, Activation activation, boolean forGrant, ExecPreparedStatement ps) Check if current session has permission on the table (current user, PUBLIC or role) and, if applicable, register a dependency of ps on the current role.
protected boolean	oneAuthHasPermissionOnTable(DataDictionary dd, java.lang.String authorizationId, boolean forGrant)
java.lang.String	toString()

Methods inherited from class org.apache.derby.iapi.sql.dictionary.StatementPermission

genericCheck, getObjectType, getPrivilegedObject, isCorrectPermission

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

tableUUID

UUID tableUUID

privType

int privType

Constructor Detail

StatementTablePermission

public StatementTablePermission(UUID tableUUID,
                                int privType)

Constructor for StatementTablePermission. Creates an instance of table permission requested for the given access.

Parameters:

tableUUID - UUID of the table

privType - Access privilege requested

Method Detail

getPrivType

public int getPrivType()

Return privilege access requested for this access descriptor

Returns:

Privilege access

getTableUUID

public UUID getTableUUID()

Return table UUID for this access descriptor

Returns:

Table UUID

equals

public boolean equals(java.lang.Object obj)

Routine to check if another instance of access descriptor matches this. Used to ensure only one access descriptor for a table of given privilege is created. Otherwise, every column reference from a table may create a descriptor for that table.

Overrides:

equals in class java.lang.Object

Parameters:

obj - Another instance of StatementPermission

Returns:

true if match

hashCode

public int hashCode()

Return hash code for this instance

Overrides:

hashCode in class java.lang.Object

Returns:

Hashcode

check

public void check(LanguageConnectionContext lcc,
                  boolean forGrant,
                  Activation activation)
           throws StandardException

Specified by:

check in class StatementPermission

Parameters:

lcc - LanguageConnectionContext

activation - activation for statement needing check

Throws:

StandardException - if the permission has not been granted

See Also:

StatementPermission.check(org.apache.derby.iapi.sql.conn.LanguageConnectionContext, boolean, org.apache.derby.iapi.sql.Activation)

getTableDescriptor

protected TableDescriptor getTableDescriptor(DataDictionary dd)
                                      throws StandardException

Throws:

StandardException

hasPermissionOnTable

protected boolean hasPermissionOnTable(LanguageConnectionContext lcc,
                                       Activation activation,
                                       boolean forGrant,
                                       ExecPreparedStatement ps)
                                throws StandardException

Check if current session has permission on the table (current user, PUBLIC or role) and, if applicable, register a dependency of ps on the current role.

Parameters:

lcc - the current language connection context

activation - the activation of ps

forGrant - true if FOR GRANT is required

ps - the prepared statement for which we are checking necessary privileges

Throws:

StandardException

oneAuthHasPermissionOnTable

protected boolean oneAuthHasPermissionOnTable(DataDictionary dd,
                                              java.lang.String authorizationId,
                                              boolean forGrant)
                                       throws StandardException

Throws:

StandardException

getPermissionDescriptor

public PermissionsDescriptor getPermissionDescriptor(java.lang.String authid,
                                                     DataDictionary dd)
                                              throws StandardException

Description copied from class: StatementPermission

Get the PermissionsDescriptor for the passed authorization id for this object. This method gets called during the execution phase of create view/constraint/trigger. The return value of this method is saved in dependency system to keep track of views/constraints/triggers dependencies on required permissions. This happens in execution phase after it has been established that passed authorization id has all the permissions it needs to create that view/constraint/trigger. Which means that we can only get to writing into dependency system once all the required privileges are confirmed.

Specified by:

getPermissionDescriptor in class StatementPermission

Parameters:

authid - AuthorizationId

dd - DataDictionary

Returns:

PermissionsDescriptor The PermissionsDescriptor for the passed authorization id on this object

Throws:

StandardException

See Also:

StatementPermission.getPermissionDescriptor(java.lang.String, org.apache.derby.iapi.sql.dictionary.DataDictionary)

getPrivName

public java.lang.String getPrivName()

Return privilege needed for this access as string

Returns:

privilege string

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object