Package org.evrete

Class KnowledgeService

java.lang.Object

org.evrete.KnowledgeService

public class KnowledgeService
extends Object

KnowledgeService is a root element of every Evrete-based application. It holds initial Configuration, security settings, references to all required SPI implementations, and an instance of Java ExecutorService.

Constructor Summary

Constructors

Constructor	Description
KnowledgeService()
KnowledgeService(Configuration conf)

Method Summary

Modifier and Type	Method	Description
ClassLoader	getClassLoader()
Configuration	getConfiguration()
org.evrete.runtime.async.ForkJoinExecutor	getExecutor()
ExpressionResolverProvider	getExpressionResolverProvider()
LiteralRhsCompiler	getLiteralRhsCompiler()
MemoryFactoryProvider	getMemoryFactoryProvider()
SourceSecurity	getSecurity()
TypeResolverProvider	getTypeResolverProvider()
Knowledge	newKnowledge()
Knowledge	newKnowledge(String dsl, InputStream... resources)
Knowledge	newKnowledge(String dsl, Reader... resources)
Knowledge	newKnowledge(String dsl, Class<?>... resources)	This is a convenience method.
Knowledge	newKnowledge(String dsl, String... resources)
Knowledge	newKnowledge(String dsl, URL... resources)
Knowledge	newKnowledge(String dsl, TypeResolver typeResolver, InputStream... resources)
Knowledge	newKnowledge(String dsl, TypeResolver typeResolver, Reader... resources)
Knowledge	newKnowledge(String dsl, TypeResolver typeResolver, Class<?>... resources)	This is a convenience method.
Knowledge	newKnowledge(String dsl, TypeResolver typeResolver, URL... resources)
Knowledge	newKnowledge(TypeResolver typeResolver)
StatefulSession	newStatefulSession()	This method is a shorthand for newKnowledge().newStatefulSession() which returns an empty session instance.
StatelessSession	newStatelessSession()	This method is a shorthand for newKnowledge().newStatelessSession() which returns an empty session instance.
TypeResolver	newTypeResolver()
void	setClassLoader(ClassLoader classLoader)
void	shutdown()

Methods inherited from class java.lang.Object

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

Constructor Details

KnowledgeService

public KnowledgeService(Configuration conf)

KnowledgeService

public KnowledgeService()

Method Details

getSecurity

public SourceSecurity getSecurity()

getClassLoader

public ClassLoader getClassLoader()

setClassLoader

public void setClassLoader(ClassLoader classLoader)

newKnowledge

public Knowledge newKnowledge()

Returns:

an empty Knowledge instance

newKnowledge

public Knowledge newKnowledge(TypeResolver typeResolver)

Returns:

an empty Knowledge instance

newTypeResolver

public TypeResolver newTypeResolver()

newKnowledge

public Knowledge newKnowledge(String dsl,
 URL... resources)
                       throws IOException

Parameters:

dsl - DSL name

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 TypeResolver typeResolver,
 URL... resources)
                       throws IOException

Parameters:

dsl - DSL name

typeResolver - TypeResolver to use

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 Reader... resources)
                       throws IOException

Parameters:

dsl - DSL name

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 TypeResolver typeResolver,
 Reader... resources)
                       throws IOException

Parameters:

dsl - DSL name

typeResolver - TypeResolver to use

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 InputStream... resources)
                       throws IOException

Parameters:

dsl - DSL name

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 TypeResolver typeResolver,
 InputStream... resources)
                       throws IOException

Parameters:

dsl - DSL name

typeResolver - TypeResolver to use

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 Class<?>... resources)
                       throws IOException

This is a convenience method. The implementation gets URLs of each class and calls newKnowledge(String, URL...)

Parameters:

dsl - DSL name

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

newKnowledge

public Knowledge newKnowledge(String dsl,
 TypeResolver typeResolver,
 Class<?>... resources)
                       throws IOException

This is a convenience method. The implementation gets URLs of each class and calls newKnowledge(String, TypeResolver, URL...)

Parameters:

dsl - DSL name

typeResolver - TypeResolver to use

resources - DSL resources

Returns:

a Knowledge instance built by DSL provider from given resources.

Throws:

IOException

shutdown

public void shutdown()

getExecutor

public org.evrete.runtime.async.ForkJoinExecutor getExecutor()

getConfiguration

public Configuration getConfiguration()

getMemoryFactoryProvider

public MemoryFactoryProvider getMemoryFactoryProvider()

getExpressionResolverProvider

public ExpressionResolverProvider getExpressionResolverProvider()

getLiteralRhsCompiler

public LiteralRhsCompiler getLiteralRhsCompiler()

getTypeResolverProvider

public TypeResolverProvider getTypeResolverProvider()

newKnowledge

public Knowledge newKnowledge(String dsl,
 String... resources)
                       throws IOException

Throws:

IOException

newStatefulSession

public StatefulSession newStatefulSession()

This method is a shorthand for newKnowledge().newStatefulSession() which returns an empty session instance.

Returns:

an empty StatefulSession

newStatelessSession

public StatelessSession newStatelessSession()

This method is a shorthand for newKnowledge().newStatelessSession() which returns an empty session instance.

Returns:

an empty StatelessSession