Package org.drools.core.rule
Class SlidingLengthWindow
- java.lang.Object
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- org.drools.core.rule.SlidingLengthWindow
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- All Implemented Interfaces:
java.io.Externalizable
,java.io.Serializable
,java.lang.Cloneable
,org.drools.base.rule.Behavior
,org.drools.base.rule.RuleComponent
,BehaviorRuntime
public class SlidingLengthWindow extends java.lang.Object implements java.io.Externalizable, BehaviorRuntime
A length window behavior implementation- See Also:
- Serialized Form
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
SlidingLengthWindow.SlidingLengthWindowContext
A Context object for length windows
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Field Summary
Fields Modifier and Type Field Description protected int
size
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Constructor Summary
Constructors Constructor Description SlidingLengthWindow()
SlidingLengthWindow(int size)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
assertFact(java.lang.Object context, org.kie.api.runtime.rule.FactHandle handle, PropagationContext pctx, ReteEvaluator reteEvaluator)
Makes the behavior aware of the new fact entering behavior's scopeBehaviorContext
createContext()
Creates the context object associated with this behavior.void
expireFacts(java.lang.Object context, PropagationContext pctx, ReteEvaluator reteEvaluator)
A callback method that allows behaviors to expire factslong
getExpirationOffset()
Length windows don't change expiration offset, so always return -1long
getSize()
org.drools.base.rule.Behavior.BehaviorType
getType()
Returns the type of the behaviorvoid
readExternal(java.io.ObjectInput in)
void
retractFact(java.lang.Object context, org.kie.api.runtime.rule.FactHandle handle, PropagationContext pctx, ReteEvaluator reteEvaluator)
Removes a right tuple from the behavior's scopevoid
setSize(int size)
java.lang.String
toString()
void
writeExternal(java.io.ObjectOutput out)
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Method Detail
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readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
- Specified by:
readExternal
in interfacejava.io.Externalizable
- Throws:
java.io.IOException
java.lang.ClassNotFoundException
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writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
- Specified by:
writeExternal
in interfacejava.io.Externalizable
- Throws:
java.io.IOException
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getType
public org.drools.base.rule.Behavior.BehaviorType getType()
Description copied from interface:BehaviorRuntime
Returns the type of the behavior- Specified by:
getType
in interfaceorg.drools.base.rule.Behavior
- Specified by:
getType
in interfaceBehaviorRuntime
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getSize
public long getSize()
- Returns:
- the size
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setSize
public void setSize(int size)
- Parameters:
size
- the size to set
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createContext
public BehaviorContext createContext()
Description copied from interface:BehaviorRuntime
Creates the context object associated with this behavior. The object is given as a parameter in all behavior call backs.- Specified by:
createContext
in interfaceBehaviorRuntime
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assertFact
public boolean assertFact(java.lang.Object context, org.kie.api.runtime.rule.FactHandle handle, PropagationContext pctx, ReteEvaluator reteEvaluator)
Description copied from interface:BehaviorRuntime
Makes the behavior aware of the new fact entering behavior's scope- Specified by:
assertFact
in interfaceBehaviorRuntime
- Parameters:
context
- The behavior context objecthandle
- The new fact entering behavior's scope- Returns:
- true if the propagation should continue, false otherwise. I.e., the behaviour has veto power over the fact propagation, and prevents the propagation to continue if returns false on this method.
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retractFact
public void retractFact(java.lang.Object context, org.kie.api.runtime.rule.FactHandle handle, PropagationContext pctx, ReteEvaluator reteEvaluator)
Description copied from interface:BehaviorRuntime
Removes a right tuple from the behavior's scope- Specified by:
retractFact
in interfaceBehaviorRuntime
- Parameters:
context
- The behavior context objecthandle
- The fact leaving the behavior's scope
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expireFacts
public void expireFacts(java.lang.Object context, PropagationContext pctx, ReteEvaluator reteEvaluator)
Description copied from interface:BehaviorRuntime
A callback method that allows behaviors to expire facts- Specified by:
expireFacts
in interfaceBehaviorRuntime
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getExpirationOffset
public long getExpirationOffset()
Length windows don't change expiration offset, so always return -1- Specified by:
getExpirationOffset
in interfaceorg.drools.base.rule.Behavior
- Specified by:
getExpirationOffset
in interfaceBehaviorRuntime
- Returns:
- the expiration offset for this behavior or -1 if they don't have a time based expiration offset.
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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