edu.umd.cs.psl.model.atom

Class PersistedAtomManager

java.lang.Object

edu.umd.cs.psl.model.atom.PersistedAtomManager

All Implemented Interfaces:

AtomManager

public class PersistedAtomManager
extends Object
implements AtomManager

Implements the AtomManager with a twist: this AtomManager will only return RandomVariableAtoms that were persisted in the Database at instantiation.

All other types of Atoms are returned normally.

Author:

Eric Norris

Constructor Summary

Constructors

Constructor and Description
PersistedAtomManager(Database db) Constructs a PersistedAtomManager with a built-in set of all the database's persisted RandomVariableAtoms.

Method Summary

Methods

Modifier and Type	Method and Description
ResultList	executeQuery(DatabaseQuery query) Calls Database.executeQuery(DatabaseQuery) on the encapsulated Database.
GroundAtom	getAtom(Predicate p, GroundTerm... arguments) Returns the GroundAtom for the given Predicate and GroundTerms.
Iterable<RandomVariableAtom>	getPersistedRVAtoms()
boolean	isClosed(StandardPredicate predicate) Calls Database.isClosed(StandardPredicate) on the encapsulated Database.

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistedAtomManager

public PersistedAtomManager(Database db)

Constructs a PersistedAtomManager with a built-in set of all the database's persisted RandomVariableAtoms.

Parameters:

db - the Database to query for all getAtom() calls.

Method Detail

getAtom

public GroundAtom getAtom(Predicate p,
                 GroundTerm... arguments)

Description copied from interface: AtomManager

Returns the GroundAtom for the given Predicate and GroundTerms.

This method must call Database.getAtom(Predicate, GroundTerm...) to actually retrieve the GroundAtom.

Specified by:

getAtom in interface AtomManager

Parameters:

p - the Predicate of the Atom

arguments - the GroundTerms of the Atom

Returns:

the Atom

executeQuery

public ResultList executeQuery(DatabaseQuery query)

Description copied from interface: AtomManager

Calls Database.executeQuery(DatabaseQuery) on the encapsulated Database.

Specified by:

executeQuery in interface AtomManager

Parameters:

query - the query to execute

Returns:

the query results exactly as returned by the Database

isClosed

public boolean isClosed(StandardPredicate predicate)

Description copied from interface: AtomManager

Calls Database.isClosed(StandardPredicate) on the encapsulated Database.

Specified by:

isClosed in interface AtomManager

Parameters:

predicate - the predicate to check

Returns:

TRUE if predicate is closed in the Database

getPersistedRVAtoms

public Iterable<RandomVariableAtom> getPersistedRVAtoms()