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/*
* Copyright 2004-2013 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.glowroot.shaded.h2.engine;
import java.util.HashMap;
import org.glowroot.shaded.h2.table.Table;
import org.glowroot.shaded.h2.util.New;
/**
* A right owner (sometimes called principal).
*/
public abstract class RightOwner extends DbObjectBase {
/**
* The map of granted roles.
*/
private HashMap grantedRoles;
/**
* The map of granted rights.
*/
private HashMap grantedRights;
protected RightOwner(Database database, int id, String name,
String traceModule) {
initDbObjectBase(database, id, name, traceModule);
}
/**
* Check if a role has been granted for this right owner.
*
* @param grantedRole the role
* @return true if the role has been granted
*/
public boolean isRoleGranted(Role grantedRole) {
if (grantedRole == this) {
return true;
}
if (grantedRoles != null) {
for (Role role : grantedRoles.keySet()) {
if (role == grantedRole) {
return true;
}
if (role.isRoleGranted(grantedRole)) {
return true;
}
}
}
return false;
}
/**
* Check if a right is already granted to this object or to objects that
* were granted to this object.
*
* @param table the table to check
* @param rightMask the right mask to check
* @return true if the right was already granted
*/
boolean isRightGrantedRecursive(Table table, int rightMask) {
Right right;
if (grantedRights != null) {
right = grantedRights.get(table);
if (right != null) {
if ((right.getRightMask() & rightMask) == rightMask) {
return true;
}
}
}
if (grantedRoles != null) {
for (RightOwner role : grantedRoles.keySet()) {
if (role.isRightGrantedRecursive(table, rightMask)) {
return true;
}
}
}
return false;
}
/**
* Grant a right for the given table. Only one right object per table is
* supported.
*
* @param table the table
* @param right the right
*/
public void grantRight(Table table, Right right) {
if (grantedRights == null) {
grantedRights = New.hashMap();
}
grantedRights.put(table, right);
}
/**
* Revoke the right for the given table.
*
* @param table the table
*/
void revokeRight(Table table) {
if (grantedRights == null) {
return;
}
grantedRights.remove(table);
if (grantedRights.size() == 0) {
grantedRights = null;
}
}
/**
* Grant a role to this object.
*
* @param role the role
* @param right the right to grant
*/
public void grantRole(Role role, Right right) {
if (grantedRoles == null) {
grantedRoles = New.hashMap();
}
grantedRoles.put(role, right);
}
/**
* Remove the right for the given role.
*
* @param role the role to revoke
*/
void revokeRole(Role role) {
if (grantedRoles == null) {
return;
}
Right right = grantedRoles.get(role);
if (right == null) {
return;
}
grantedRoles.remove(role);
if (grantedRoles.size() == 0) {
grantedRoles = null;
}
}
/**
* Get the 'grant table' right of this object.
*
* @param table the granted table
* @return the right or null if the right has not been granted
*/
public Right getRightForTable(Table table) {
if (grantedRights == null) {
return null;
}
return grantedRights.get(table);
}
/**
* Get the 'grant role' right of this object.
*
* @param role the granted role
* @return the right or null if the right has not been granted
*/
public Right getRightForRole(Role role) {
if (grantedRoles == null) {
return null;
}
return grantedRoles.get(role);
}
}