org.jpc.engine.prolog

Class PrologEngineProxy

java.lang.Object

org.jpc.engine.prolog.AbstractPrologEngine

org.jpc.engine.prolog.PrologEngineProxy

All Implemented Interfaces:

PrologDatabase, PrologEngine

Direct Known Subclasses:

LogtalkEngine

public class PrologEngineProxy
extends AbstractPrologEngine

Field Summary

Fields inherited from class org.jpc.engine.prolog.AbstractPrologEngine

ALL_RESULTS_VAR

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PrologEngineProxy() To allows descendants to instantiate the proxied Prolog engines in a custom way
	PrologEngineProxy(PrologEngine proxiedEngine)

Method Summary

Modifier and Type	Method and Description
Term	asTerm(String termString, Jpc context)
Query	basicQuery(Term term, boolean errorHandledQuery, Jpc context)
void	close() Close the logic engine and free associated resources.
PrologEngine	getPrologEngine()
boolean	isCloseable()
protected void	setPrologEngine(PrologEngine proxiedEngine)
ThreadModel	threadModel()

Methods inherited from class org.jpc.engine.prolog.AbstractPrologEngine

abolish, allSucceed, asLogtalkEngine, asserta, asserta, assertz, assertz, asTerm, asTerms, asTerms, bagof, bagof, cd, cd, clause, command, command, command, command, currentOp, currentPrologFlag, currentPrologFlag, currentPrologFlag, ensureLoaded, ensureLoaded, ensureLoaded, findall, findall, flushOutput, forall, getOperatorsContext, isBinaryOperator, isUnaryOperator, loadJpc, loadJpcForLogtalk, loadLogtalkFiles, loadPrologFiles, prologDialect, query, query, query, query, query, query, query, query, retract, retractAll, setof, setof, setPrologFlag, setPrologFlag, unify, unify, withLogtalk

Methods inherited from class java.lang.Object

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

Constructor Detail

PrologEngineProxy

public PrologEngineProxy(PrologEngine proxiedEngine)

PrologEngineProxy

protected PrologEngineProxy()

To allows descendants to instantiate the proxied Prolog engines in a custom way

Method Detail

setPrologEngine

protected void setPrologEngine(PrologEngine proxiedEngine)

getPrologEngine

public PrologEngine getPrologEngine()

isCloseable

public boolean isCloseable()

Returns:

true if the Prolog engine can be closed (i.e., its resources can be freed). false otherwise.

threadModel

public ThreadModel threadModel()

Returns:

the thread model of the Prolog engine. This specifies if the engine can manage or not concurrent requests.

basicQuery

public Query basicQuery(Term term,
                        boolean errorHandledQuery,
                        Jpc context)

Returns:

a non-instrumented query

asTerm

public Term asTerm(String termString,
                   Jpc context)

close

public void close()

Description copied from interface: PrologEngine

Close the logic engine and free associated resources. Once the session is not required it can be closed. However, some drivers do not allow this and will throw an UnsupportedOperationException instead

Specified by:

close in interface PrologEngine

Specified by:

close in class AbstractPrologEngine