org.drools.leaps
Class LeapsRuleBase

java.lang.Object
  org.drools.common.AbstractRuleBase
      org.drools.leaps.LeapsRuleBase

All Implemented Interfaces:

java.io.Externalizable, InternalRuleBase, RuleBase, java.io.Serializable

public class LeapsRuleBase

extends AbstractRuleBase

This base class for the engine and analogous to Drool's RuleBase class. It has a similar interface adapted to the Leaps algorithm

See Also:

Serialized Form

Field Summary

Fields inherited from class org.drools.common.AbstractRuleBase

config, factHandleFactory, globals, packageClassLoader, pkgs, PRESENT, workingMemories

Fields inherited from interface org.drools.RuleBase

LEAPS, RETEOO

Constructor Summary

LeapsRuleBase()
Construct.

LeapsRuleBase(RuleBaseConfiguration config, FactHandleFactory factHandleFactory)
Construct.

Method Summary

void	addRule(Rule rule) Creates leaps rule wrappers and propagate rule to the working memories
void	assertObject(FactHandle handle, java.lang.Object object, PropagationContext context, ReteooWorkingMemory workingMemory) Assert a fact object.
void	modifyObject(FactHandle handle, PropagationContext context, ReteooWorkingMemory workingMemory)
WorkingMemory	newWorkingMemory() Create a new WorkingMemory session for this RuleBase.
WorkingMemory	newWorkingMemory(boolean keepReference) Create a new WorkingMemory session for this RuleBase.
void	readExternal(java.io.ObjectInput stream) Handles the read serialization of the Package.
void	removeRule(Rule rule)
void	retractObject(FactHandle handle, PropagationContext context, ReteooWorkingMemory workingMemory) Retract a fact object.
void	writeExternal(java.io.ObjectOutput stream) Handles the write serialization of the Package.

Methods inherited from class org.drools.common.AbstractRuleBase

addPackage, addWorkingMemory, disposeWorkingMemory, doReadExternal, doWriteExternal, getConfiguration, getFactHandleFactory, getGlobals, getPackages, getWorkingMemories, newFactHandleFactory, newWorkingMemory, newWorkingMemory, removePackage, removeRule

Methods inherited from class java.lang.Object

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

Constructor Detail

LeapsRuleBase

public LeapsRuleBase()
              throws PackageIntegrationException

Construct.

Throws:

PackageIntegrationException

LeapsRuleBase

public LeapsRuleBase(RuleBaseConfiguration config,
                     FactHandleFactory factHandleFactory)

Construct.

Throws:

PackageIntegrationException

java.lang.Exception

Parameters:

factHandleFactory - The fact handle factory.

Method Detail

newWorkingMemory

public WorkingMemory newWorkingMemory()

Description copied from interface: RuleBase

Create a new WorkingMemory session for this RuleBase. By default the RuleBase retains a weak reference to returned WorkingMemory.

The created WorkingMemory uses the default conflict resolution strategy.

Specified by:

newWorkingMemory in interface RuleBase

Overrides:

newWorkingMemory in class AbstractRuleBase

See Also:

RuleBase

newWorkingMemory

public WorkingMemory newWorkingMemory(boolean keepReference)

Description copied from interface: RuleBase

Create a new WorkingMemory session for this RuleBase. Optionally the RuleBase retains a weak reference to returned WorkingMemory.

The created WorkingMemory uses the default conflict resolution strategy.

Specified by:

newWorkingMemory in interface RuleBase

Specified by:

newWorkingMemory in class AbstractRuleBase

See Also:

RuleBase

addRule

public void addRule(Rule rule)
             throws FactException,
                    InvalidPatternException

Creates leaps rule wrappers and propagate rule to the working memories

Overrides:

addRule in class AbstractRuleBase

Throws:

FactException

InvalidPatternException

Parameters:

rule -

removeRule

public void removeRule(Rule rule)

Specified by:

removeRule in class AbstractRuleBase

writeExternal

public void writeExternal(java.io.ObjectOutput stream)
                   throws java.io.IOException

Handles the write serialization of the Package. Patterns in Rules may reference generated data which cannot be serialized by default methods. The Package uses PackageCompilationData to hold a reference to the generated bytecode. The generated bytecode must be restored before any Rules.

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput stream)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Handles the read serialization of the Package. Patterns in Rules may reference generated data which cannot be serialized by default methods. The Package uses PackageCompilationData to hold a reference to the generated bytecode; which must be restored before any Rules. A custom ObjectInputStream, able to resolve classes against the bytecode in the PackageCompilationData, is used to restore the Rules.

Throws:

java.io.IOException

java.lang.ClassNotFoundException

assertObject

public void assertObject(FactHandle handle,
                         java.lang.Object object,
                         PropagationContext context,
                         ReteooWorkingMemory workingMemory)
                  throws FactException

Description copied from interface: InternalRuleBase

Assert a fact object.

Throws:

FactException

Parameters:

handle - The handle.

object - The fact.

workingMemory - The working-memory.

modifyObject

public void modifyObject(FactHandle handle,
                         PropagationContext context,
                         ReteooWorkingMemory workingMemory)
                  throws FactException

Throws:

FactException

retractObject

public void retractObject(FactHandle handle,
                          PropagationContext context,
                          ReteooWorkingMemory workingMemory)
                   throws FactException

Description copied from interface: InternalRuleBase

Retract a fact object.

Throws:

FactException

Parameters:

handle - The handle.

workingMemory - The working-memory.