org.fcrepo.server.security.xacml.pdp.data
Class DbXmlPolicyIndex

java.lang.Object
  org.fcrepo.server.security.xacml.pdp.data.PolicyIndexBase
      org.fcrepo.server.security.xacml.pdp.data.XPathPolicyIndex
          org.fcrepo.server.security.xacml.pdp.data.DbXmlPolicyIndex

All Implemented Interfaces:

PolicyIndex

public class DbXmlPolicyIndex
extends XPathPolicyIndex
implements PolicyIndex

Encapsulates indexed access to policies stored in DbXml. See DbXmlPolicyStore for CRUD operations on policies in DbXml.

Version:

$Id$

Author:

Stephen Bayliss

Field Summary

Fields inherited from class org.fcrepo.server.security.xacml.pdp.data.PolicyIndexBase

ACTION_KEY, ENVIRONMENT_KEY, indexed, indexMap, m_policyReader, METADATA_POLICY_NS, namespaces, RESOURCE_KEY, SUBJECT_KEY

Fields inherited from interface org.fcrepo.server.security.xacml.pdp.data.PolicyIndex

XACML_RESOURCE_ID, XACML20_POLICY_NS

Constructor Summary

DbXmlPolicyIndex(PolicyReader policyReader)

Method Summary

String	addPolicy(String name, String document) Generates a policy based on the string data provided and the name.
boolean	clear() Clear the policy index completely
void	close()
boolean	contains(String policyName) Check if the policy identified by policyName exists.
boolean	deletePolicy(String name) Removes the policy given by name from the data store.
long	getLastUpdate()
Map<String,com.sun.xacml.AbstractPolicy>	getPolicies(com.sun.xacml.EvaluationCtx eval, com.sun.xacml.finder.PolicyFinder policyFinder) Extracts a list of policies from the Policy Index that are relevant to the given Evaluation Context.
com.sun.xacml.AbstractPolicy	getPolicy(String name, com.sun.xacml.finder.PolicyFinder policyFinder) Obtains the policy with the provided name from the Policy Store.
void	init()
void	setContainer(String container)
void	setDatabaseDirectory(String databaseDirectory)
void	setLastUpdate(long lastUpdate)
boolean	updatePolicy(String name, String newDocument) Generates a new policy based for the given policy name and replaces the old policy in the Policy Store with it.

Methods inherited from class org.fcrepo.server.security.xacml.pdp.data.XPathPolicyIndex

getXpath, getXpathVariables

Methods inherited from class org.fcrepo.server.security.xacml.pdp.data.PolicyIndexBase

getAttributeMap, handleDocument, makeComponents, setActionAttributes, setAttributeMap, setEnvironmentAttributes, setResourceAttributes, setSubjectAttributes

Methods inherited from class java.lang.Object

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

Constructor Detail

DbXmlPolicyIndex

public DbXmlPolicyIndex(PolicyReader policyReader)
                 throws PolicyIndexException

Throws:

PolicyIndexException

Method Detail

setDatabaseDirectory

public void setDatabaseDirectory(String databaseDirectory)

setContainer

public void setContainer(String container)

init

public void init()
          throws PolicyIndexException

Throws:

PolicyIndexException

close

public void close()

getPolicies

public Map<String,com.sun.xacml.AbstractPolicy> getPolicies(com.sun.xacml.EvaluationCtx eval,
                                                            com.sun.xacml.finder.PolicyFinder policyFinder)
                                                     throws PolicyIndexException

Description copied from interface: PolicyIndex

Extracts a list of policies from the Policy Index that are relevant to the given Evaluation Context. Note that this returns a set that still has to be further filtered by the PolicyFinder to find policies that match 100%. This merely eliminates the need to match every policy, just the most likely ones to apply.

Specified by:

getPolicies in interface PolicyIndex

Parameters:

eval - the Evaluation Context from which to match policies against

Returns:

the List of potential policies

Throws:

PolicyIndexException

addPolicy

public String addPolicy(String name,
                        String document)
                 throws PolicyIndexException

Description copied from interface: PolicyIndex

Generates a policy based on the string data provided and the name. The policy is then added to the Policy Store.

Specified by:

addPolicy in interface PolicyIndex

document - the policy as a String

Returns:

the name of the added policy

Throws:

PolicyIndexException

deletePolicy

public boolean deletePolicy(String name)
                     throws PolicyIndexException

Description copied from interface: PolicyIndex

Removes the policy given by name from the data store.

Specified by:

deletePolicy in interface PolicyIndex

Parameters:

name - the name of the policy

Returns:

true if policy was deleted

Throws:

PolicyIndexException

updatePolicy

public boolean updatePolicy(String name,
                            String newDocument)
                     throws PolicyIndexException

Description copied from interface: PolicyIndex

Generates a new policy based for the given policy name and replaces the old policy in the Policy Store with it. An exception is thrown if the policy with the given name cannot be found.

Specified by:

updatePolicy in interface PolicyIndex

Parameters:

name - the name of the policy to update

newDocument - the new policy as a String

Returns:

true if policy was updated

Throws:

PolicyIndexException

getPolicy

public com.sun.xacml.AbstractPolicy getPolicy(String name,
                                              com.sun.xacml.finder.PolicyFinder policyFinder)
                                       throws PolicyIndexException

Description copied from interface: PolicyIndex

Obtains the policy with the provided name from the Policy Store.

Specified by:

getPolicy in interface PolicyIndex

Parameters:

name - the name of the policy to return

Returns:

the policy as an array of bytes

Throws:

PolicyIndexException

contains

public boolean contains(String policyName)
                 throws PolicyIndexException

Check if the policy identified by policyName exists.

Specified by:

contains in interface PolicyIndex

Parameters:

policyName -

Returns:

true iff the policy store contains a policy identified as policyName

Throws:

PolicyStoreException

PolicyIndexException

getLastUpdate

public long getLastUpdate()

setLastUpdate

public void setLastUpdate(long lastUpdate)

Parameters:

lastUpdate - the lastUpdate to set

clear

public boolean clear()
              throws PolicyIndexException

Description copied from interface: PolicyIndex

Clear the policy index completely

Specified by:

clear in interface PolicyIndex

Returns:

Throws:

PolicyIndexException