package org.drools.core.beliefsystem.simple;
import org.drools.core.beliefsystem.BeliefSet;
import org.drools.core.common.InternalFactHandle;
import org.drools.core.common.InternalKnowledgeRuntime;
import org.drools.core.common.InternalWorkingMemory;
import org.drools.core.common.NamedEntryPoint;
import org.drools.core.common.WorkingMemoryAction;
import org.drools.core.impl.StatefulKnowledgeSessionImpl;
import org.drools.core.marshalling.impl.MarshallerReaderContext;
import org.drools.core.marshalling.impl.MarshallerWriteContext;
import org.drools.core.marshalling.impl.PersisterHelper;
import org.drools.core.marshalling.impl.ProtobufMessages;
import org.drools.core.reteoo.ObjectTypeConf;
import org.drools.core.rule.Rule;
import org.drools.core.spi.Activation;
import org.drools.core.spi.PropagationContext;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
public class BeliefSystemLogicalCallback
implements
WorkingMemoryAction {
private InternalFactHandle handle;
private PropagationContext context;
private Activation activation;
private boolean update;
private boolean fullyRetract;
public BeliefSystemLogicalCallback() {
}
public BeliefSystemLogicalCallback(final InternalFactHandle handle,
final PropagationContext context,
final Activation activation,
final boolean update,
final boolean fullyRetract) {
this.handle = handle;
this.context = context;
this.activation = activation;
this.update = update;
this.fullyRetract = fullyRetract;
}
public BeliefSystemLogicalCallback(MarshallerReaderContext context) throws IOException {
this.handle = context.handles.get( context.readInt() );
this.context = context.propagationContexts.get( context.readLong() );
this.activation = (Activation) context.terminalTupleMap.get( context.readInt() ).getObject();
}
public BeliefSystemLogicalCallback(MarshallerReaderContext context,
ProtobufMessages.ActionQueue.Action _action) {
ProtobufMessages.ActionQueue.LogicalRetract _retract = _action.getLogicalRetract();
this.handle = context.handles.get( _retract.getHandleId() );
this.activation = (Activation) context.filter
.getTuplesCache().get( PersisterHelper.createActivationKey(_retract.getActivation().getPackageName(),
_retract.getActivation().getRuleName(),
_retract.getActivation().getTuple()) ).getObject();
this.context = this.activation.getPropagationContext();
this.fullyRetract = _retract.getFullyRetract();
this.update = _retract.getUpdate();
}
public void write(MarshallerWriteContext context) throws IOException {
context.writeShort( WorkingMemoryAction.LogicalRetractCallback );
context.writeInt( this.handle.getId() );
context.writeLong( this.context.getPropagationNumber() );
context.writeInt( context.terminalTupleMap.get( this.activation.getTuple() ) );
}
public ProtobufMessages.ActionQueue.Action serialize(MarshallerWriteContext context) {
ProtobufMessages.ActionQueue.LogicalRetract _retract = ProtobufMessages.ActionQueue.LogicalRetract.newBuilder()
.setHandleId( this.handle.getId() )
.setActivation( PersisterHelper.createActivation( this.activation.getRule().getPackageName(),
this.activation.getRule().getName(),
this.activation.getTuple() ) )
.setFullyRetract( fullyRetract )
.setUpdate( update )
.build();
return ProtobufMessages.ActionQueue.Action.newBuilder()
.setType( ProtobufMessages.ActionQueue.ActionType.LOGICAL_RETRACT )
.setLogicalRetract( _retract )
.build();
}
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
handle = (InternalFactHandle) in.readObject();
context = (PropagationContext) in.readObject();
activation = (Activation) in.readObject();
fullyRetract = in.readBoolean();
update = in.readBoolean();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject( handle );
out.writeObject( context );
out.writeObject( activation );
out.writeBoolean( fullyRetract );
out.writeBoolean( update );
}
public boolean isUpdate() {
return update;
}
public void setUpdate(boolean update) {
this.update = update;
}
public boolean isFullyRetract() {
return fullyRetract;
}
public void setFullyRetract(boolean fullyRetract) {
this.fullyRetract = fullyRetract;
}
public void execute(InternalWorkingMemory workingMemory) {
NamedEntryPoint nep = (NamedEntryPoint) handle.getEntryPoint() ;
BeliefSet bs = handle.getEqualityKey().getBeliefSet();
bs.setWorkingMemoryAction( null );
if ( update ) {
if ( !bs.isEmpty() ) {
// We need the isEmpty check, in case the BeliefSet was made empty (due to retract) after this was scheduled
((NamedEntryPoint) handle.getEntryPoint() ).update( handle, true, handle.getObject(), Long.MAX_VALUE, Object.class, null );
}
} else {
if ( fullyRetract ) {
((NamedEntryPoint) handle.getEntryPoint()).delete( this.handle,
(Rule) context.getRuleOrigin(),
this.activation );
} else {
final ObjectTypeConf typeConf = nep.getObjectTypeConfigurationRegistry().getObjectTypeConf( nep.getEntryPoint(),
handle.getObject() );
((NamedEntryPoint) handle.getEntryPoint() ).getEntryPointNode().retractObject( handle,
context,
typeConf,
workingMemory );
}
}
}
public void execute(InternalKnowledgeRuntime kruntime) {
execute( ((StatefulKnowledgeSessionImpl) kruntime).getInternalWorkingMemory() );
}
}