Package oracle.spatial.network.nfe.model.rule

Class NFERulesEngine

java.lang.Object

oracle.spatial.network.nfe.model.rule.NFERulesEngine

public class NFERulesEngine
extends java.lang.Object

NFE component in charge of enforcing connectivity and cardinality rules. It performs the process of determining if some rule is applicable for an interaction between feature elements and apply such rule.

Constructor Summary

Constructors

Constructor	Description
NFERulesEngine(NFERulesModel rulesModel)	Creates a new rules engine instance

Method Summary

Modifier and Type	Method	Description
void	applyConnectivityRules(java.util.List<Intersection<NFEFeatureElement>> intersections)	Runs the rule applicability process over the given intersections of feature elements
void	applyConnectivityRules(Intersection<NFEFeatureElement> intersection)	Runs the rule applicability process for the given intersection of feature elements
NFEExpressionAnalyzer	getExpressionAnalyzer()	Gets the current expression analyzer instance
NFERuleHandler	getHandler(NFEConnectivityRule rule)	Gets the appropriate handler for the given rule
boolean	isMatchingType(NFEFeatureElement featElem, long ruleFeatLayerId, long ruleFeatClassId, java.lang.String ruleAttrCond)	Tells whether a feature element matches the predicate of a rule.
void	lineLineConnectionPerformed(long lineLineRuleId, java.util.Collection<NFEFeatureElement> featElems)	Method called to notify the rules engine when a connection between the specified feature elements was performed using the given line-line rule.
void	linePointConnectionPerformed(long linePointRuleId, java.util.Collection<NFEFeatureElement> featElems)	Method called to notify the rules engine when a connection between the specified feature elements was performed using the given line-point rule.
void	setExpressionAnalyzer(NFEExpressionAnalyzer exprAnalyzer)	Sets the expression analyzer implementation to be used

Methods inherited from class java.lang.Object

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

Constructor Detail

NFERulesEngine

public NFERulesEngine(NFERulesModel rulesModel)

Creates a new rules engine instance

Parameters:

rulesModel - the current rules model. The rules model must belong already to an NFE model.

Method Detail

getExpressionAnalyzer

public NFEExpressionAnalyzer getExpressionAnalyzer()

Gets the current expression analyzer instance

Returns:

an expression analyzer object

setExpressionAnalyzer

public void setExpressionAnalyzer(NFEExpressionAnalyzer exprAnalyzer)

Sets the expression analyzer implementation to be used

Parameters:

exprAnalyzer - an expression analyzer object

applyConnectivityRules

public void applyConnectivityRules(java.util.List<Intersection<NFEFeatureElement>> intersections)

Runs the rule applicability process over the given intersections of feature elements

Parameters:

intersections - a list of feature elements intersections

applyConnectivityRules

public void applyConnectivityRules(Intersection<NFEFeatureElement> intersection)

Runs the rule applicability process for the given intersection of feature elements

Parameters:

intersection - a feature elements intersection

isMatchingType

public boolean isMatchingType(NFEFeatureElement featElem,
                              long ruleFeatLayerId,
                              long ruleFeatClassId,
                              java.lang.String ruleAttrCond)

Tells whether a feature element matches the predicate of a rule. The rule's predicate is given by one of its operands and it is formed by a feature layer id, a feature class id and a boolean expression which performs comparisons between attribute values.

Parameters:

featElem - the feature element which will be compared

ruleFeatLayerId - a feature layer id defined in a rule's operand

ruleFeatClassId - a feature class id defined in a rule's operand

ruleAttrCond - an attribute condition expression defined in a rule's operand

Returns:

true if the feature element matches the given rule's predicate

getHandler

public NFERuleHandler getHandler(NFEConnectivityRule rule)

Gets the appropriate handler for the given rule

Parameters:

rule - a connectivity rule objet (line-point or line-line)

Returns:

a rule handler object

linePointConnectionPerformed

public void linePointConnectionPerformed(long linePointRuleId,
                                         java.util.Collection<NFEFeatureElement> featElems)

Method called to notify the rules engine when a connection between the specified feature elements was performed using the given line-point rule. The rules engine eventually will create the rule instance and notify the rules model.

Parameters:

linePointRuleId - a line-point rule id that allows the connection

featElems - a collection of connected feature elements

lineLineConnectionPerformed

public void lineLineConnectionPerformed(long lineLineRuleId,
                                        java.util.Collection<NFEFeatureElement> featElems)

Method called to notify the rules engine when a connection between the specified feature elements was performed using the given line-line rule. The rules engine eventually will create the rule instance and notify the rules model.

Parameters:

lineLineRuleId - a line-line rule id that allows the connection

featElems - a collection of connected feature elements