com.wles.blm
Class BLMRuleManager

java.lang.Object
  com.wles.blm.BLMRuleManager

public class BLMRuleManager

extends java.lang.Object

Manages operations on rules. Rules are used to control a subject's access to a resource. Rules can either GRANT, DENY, or DELEGATE rights on resources. Both privilege and role access can be managed via rules. Rules have the following format: effect(action(s), resource(s), subject(s) [,delegator]) if constraint; where effect may be GRANT, DENY, DELEGATE, action may be one or more privileges or roles, resource can be one or more resources, and subjects can be one or more users, groups, or roles. The constraint is a series of boolean operations over attribute values which can be used to further limit the applicability of the rule. You may make use of the wles.util.RuleParser to construct and parse rules using Java objects rather then directly dealing with the above format. Use a BLMContextManager to obtain an instance of a BLMRuleManager.

See Also:

BLMContextManager, RuleParser

Field Summary

static java.lang.String	EFFECT_TYPE_ALL Specifies rules with any effect.
static java.lang.String	EFFECT_TYPE_DELEGATE Specifies rules with a DELEGATE effect.
static java.lang.String	EFFECT_TYPE_DENY Specifies rules with a DENY effect.
static java.lang.String	EFFECT_TYPE_GRANT Specifies rules with a GRANT effect.
static java.lang.String	FILTER_OPERATOR_AND Specifies a filter search operator of AND.
static java.lang.String	FILTER_OPERATOR_OR Specifies a filter search operator of OR.
static int	ORDER_BY_DELEGATOR
static int	ORDER_BY_EFFECT Specifies the order type of queryPolicy method.
static int	ORDER_BY_PRIVILEGE
static int	ORDER_BY_RESOURCE
static int	ORDER_BY_ROLE
static int	ORDER_BY_SUBJECT
static java.lang.String	RULE_COMPOUND
static java.lang.String	RULE_FLAT Specifies the result type of queryPolicy method.

Method Summary

void	createRule(java.lang.String text) Create rule from rule text.
void	deleteQuery(QueryDescription queryDescription) To delete a saved Policy Inquiry query.
java.lang.String	filter(RuleTypeEnum ruleType, java.lang.String effectType, java.lang.String[] actions, java.lang.String[] resources, java.lang.String[] subjects, java.lang.String[] delegators, java.lang.String conditionPattern, java.lang.String filterSearchOperator) Finds rules according to the selection criteria.
boolean	findRule(java.lang.String cID, java.lang.String ruleText) Searches for a rule in a rule collection.
int	getCount(java.lang.String cID) Gets the size of a rule collection.
java.lang.String[]	getReport(java.lang.String cID) Returns a report on a rule collection.
java.lang.String[]	getReport(java.lang.String cID, int iStart, int iCount) Returns a report on a subset of a rule collection.
QueryDescription[]	listQueries(RuleTypeEnum ruleType, java.lang.String owner, int start, int numRecords) Returns an array of QueryDescription of the saved Policy queries.
void	modifyRule(java.lang.String oldRuleText, java.lang.String newRuleText) Modifies a rule by rule text.
java.lang.String	queryPolicy(PolicyQuery policyQuery) Returns a string that is an ID pointing to the collection of rules retrieved.
PolicyQuery	readQuery(QueryDescription queryDescription) Returns a PolicyQuery of the the content of a saved Policy Inquiry query.
void	release(java.lang.String cID) Releases a rule collection.
void	removeRule(java.lang.String ruleText) Removes a rule by rule text.
void	saveQuery(QueryDescription queryDescription, PolicyQuery policyQuery, boolean overwrite) To create (save) a Policy query if the query does not exist.

Methods inherited from class java.lang.Object

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

Field Detail

EFFECT_TYPE_ALL

public static final java.lang.String EFFECT_TYPE_ALL

Specifies rules with any effect.

See Also:

Constant Field Values

EFFECT_TYPE_DELEGATE

public static final java.lang.String EFFECT_TYPE_DELEGATE

Specifies rules with a DELEGATE effect.

See Also:

Constant Field Values

EFFECT_TYPE_DENY

public static final java.lang.String EFFECT_TYPE_DENY

Specifies rules with a DENY effect.

See Also:

Constant Field Values

EFFECT_TYPE_GRANT

public static final java.lang.String EFFECT_TYPE_GRANT

Specifies rules with a GRANT effect.

See Also:

Constant Field Values

FILTER_OPERATOR_AND

public static final java.lang.String FILTER_OPERATOR_AND

Specifies a filter search operator of AND.

See Also:

Constant Field Values

FILTER_OPERATOR_OR

public static final java.lang.String FILTER_OPERATOR_OR

Specifies a filter search operator of OR.

See Also:

Constant Field Values

ORDER_BY_DELEGATOR

public static final int ORDER_BY_DELEGATOR

See Also:

Constant Field Values

ORDER_BY_EFFECT

public static final int ORDER_BY_EFFECT

Specifies the order type of queryPolicy method.

See Also:

Constant Field Values

ORDER_BY_PRIVILEGE

public static final int ORDER_BY_PRIVILEGE

See Also:

Constant Field Values

ORDER_BY_RESOURCE

public static final int ORDER_BY_RESOURCE

See Also:

Constant Field Values

ORDER_BY_ROLE

public static final int ORDER_BY_ROLE

See Also:

Constant Field Values

ORDER_BY_SUBJECT

public static final int ORDER_BY_SUBJECT

See Also:

Constant Field Values

RULE_COMPOUND

public static final java.lang.String RULE_COMPOUND

See Also:

Constant Field Values

RULE_FLAT

public static final java.lang.String RULE_FLAT

Specifies the result type of queryPolicy method.

See Also:

Constant Field Values

Method Detail

createRule

public void createRule(java.lang.String text)
                throws BLMException,
                       RuleParser.ParsingException

Create rule from rule text.

Parameters:

text - text of the Rule

Throws:

BLMException

RuleParser.ParsingException

See Also:

RuleParser.ParsedRule.generateRuleText()

deleteQuery

public void deleteQuery(QueryDescription queryDescription)
                 throws BLMException

To delete a saved Policy Inquiry query. The permission to delete is checked against wles policy.

Parameters:

queryDescription - a description of Policy query, please see QueryDescription for detailed inforamtion

Throws:

BLMException

filter

public java.lang.String filter(RuleTypeEnum ruleType,
                               java.lang.String effectType,
                               java.lang.String[] actions,
                               java.lang.String[] resources,
                               java.lang.String[] subjects,
                               java.lang.String[] delegators,
                               java.lang.String conditionPattern,
                               java.lang.String filterSearchOperator)
                        throws BLMException

Finds rules according to the selection criteria. Returns a rule collection ID.

Parameters:

ruleType - rule type, one of: RuleTypeEnum.Policy, RuleTypeEnum.RoleMapping

effectType - one of: EFFECT_TYPE_GRANT, EFFECT_TYPE_DENY, EFFECT_TYPE_DELEGATE, EFFECT_TYPE_ALL

actions - array of privilege or role names as strings. An empty or null array is allowed and will match any action.

resources - array of resources as strings. An empty or null array is allowed and will match any resource.

subjects - array of subjects as strings. An empty or null array is allowed and will match any subject.

delegators - array of delegators as strings (cannot be more than one for AND search). An empty or null array is allowed and will match any delegator.

conditionPattern - condition String. Unlike the other fields in the filter method, the condition filed supports pattern matching, with the use of the * character. An empty or null value is allowed, and will match any condition.

filterSearchOperator - one of: FILTER_OPERATOR_OR, FILTER_OPERATOR_AND

Returns:

Collection ID

Throws:

BLMException

See Also:

getReport(String cID), getReport(String cID, int iStart, int iCount), getCount(String CID), release(String cID), findRule(String cID, String name), EFFECT_TYPE_GRANT, EFFECT_TYPE_DENY, EFFECT_TYPE_DELEGATE, FILTER_OPERATOR_OR, FILTER_OPERATOR_AND

findRule

public boolean findRule(java.lang.String cID,
                        java.lang.String ruleText)
                 throws BLMException,
                        RuleParser.ParsingException

Searches for a rule in a rule collection.

Parameters:

cID - collection ID of the rule collection

ruleText - text of rule

Returns:

boolean found = true

Throws:

BLMException

RuleParser.ParsingException

See Also:

RuleParser.ParsedRule.generateRuleText()

getCount

public int getCount(java.lang.String cID)
             throws BLMException

Gets the size of a rule collection.

Parameters:

cID - ID of the collection

Returns:

the count in the collection

Throws:

BLMException

getReport

public java.lang.String[] getReport(java.lang.String cID)
                             throws BLMException

Returns a report on a rule collection.

Parameters:

cID - ID of the collection

Returns:

A String array of rules in text format from the collection.

Throws:

BLMException

See Also:

RuleParser.parseRule(String ruleText)

getReport

public java.lang.String[] getReport(java.lang.String cID,
                                    int iStart,
                                    int iCount)
                             throws BLMException

Returns a report on a subset of a rule collection.

Parameters:

cID - ID of the collection

iStart - index of the start of the subset

iCount - size of the subset

Returns:

A String array of rules in text format from the collection.

Throws:

BLMException

See Also:

RuleParser.parseRule(String ruleText)

listQueries

public QueryDescription[] listQueries(RuleTypeEnum ruleType,
                                      java.lang.String owner,
                                      int start,
                                      int numRecords)
                               throws BLMException

Returns an array of QueryDescription of the saved Policy queries.

Parameters:

ruleType - an enumeration representing the type of query, can be RuleTypeEnum.Policy or RuleTypeEnum.RoleMapping, see RuleTypeEnum for detailed information.

owner - a String representing the owner of the query, like //user/wles/asiadmin/.

start - skipping this int number of records in the returned result.

numRecords - int number of records requested. A zero (0) represents all records.

Returns:

an array of QueryDescription which includes owner and query name.

Throws:

BLMException - if no record found, it will throw a BLMException which message is "No saved policy inquiry query is found"

See Also:

QueryDescription

modifyRule

public void modifyRule(java.lang.String oldRuleText,
                       java.lang.String newRuleText)
                throws BLMException,
                       RuleParser.ParsingException

Modifies a rule by rule text.

Parameters:

oldRuleText - the old rule

newRuleText - the new rule

Throws:

BLMException

RuleParser.ParsingException

See Also:

RuleParser.ParsedRule.generateRuleText()

queryPolicy

public java.lang.String queryPolicy(PolicyQuery policyQuery)
                             throws BLMException

Returns a string that is an ID pointing to the collection of rules retrieved. If no rules matches the query the ID will point to an empty collection. Rules type is Policy or RoleMapping.

Parameters:

policyQuery - a query which includes all criteria. Please see class PolicyQuery for detailed information.

Returns:

String ID to the collection

Throws:

BLMException

See Also:

PolicyQuery

readQuery

public PolicyQuery readQuery(QueryDescription queryDescription)
                      throws BLMException

Returns a PolicyQuery of the the content of a saved Policy Inquiry query. Please see PolicyQuery for detailed information.

Parameters:

queryDescription - a QueryDescription which includes owner and query name.

Returns:

a PolicyQuery which represents the query data

Throws:

BLMException

See Also:

PolicyQuery, QueryDescription

release

public void release(java.lang.String cID)
             throws BLMException

Releases a rule collection. Supplying a null collection id will cause all held collections to be released.

Parameters:

cID - ID of the collection

Returns:

void

Throws:

BLMException

removeRule

public void removeRule(java.lang.String ruleText)
                throws BLMException,
                       RuleParser.ParsingException

Removes a rule by rule text.

Parameters:

ruleText - the rule text for the rule remove

Returns:

void

Throws:

BLMException

RuleParser.ParsingException

See Also:

RuleParser.ParsedRule.generateRuleText()

saveQuery

public void saveQuery(QueryDescription queryDescription,
                      PolicyQuery policyQuery,
                      boolean overwrite)
               throws BLMException

To create (save) a Policy query if the query does not exist. To modify a Policy query if the query already exists. The permission to create/modify is checked against wles policy.

Parameters:

queryDescription - a description of Policy query. Please see QueryDescription for detailed inforamtion.

policyQuery - a PolicyQuery which representing the query data. Please see PolicyQuery for detailed inforamtion.

overwrite - true/false to overwrite the query if it already exists.

Throws:

BLMException