org.drools.semantics.java
Class JavaCondition

java.lang.Object
  org.drools.semantics.java.JavaCondition

All Implemented Interfaces:

java.io.Serializable, SemanticComponent, SemanticCondition, SemanticInvokeable, SemanticRule, Condition, RuleComponent

Direct Known Subclasses:

GroovyCondition

public class JavaCondition
extends java.lang.Object
implements java.io.Serializable, Condition, SemanticCondition

Java expression semantics Condition.

See Also:

Serialized Form

Field Summary

protected ConditionInvoker	conditionInvoker
protected java.lang.String	expression
protected java.lang.String	name
protected Declaration[]	requiredDeclarations
protected Rule	rule
protected java.lang.String	semanticType
protected java.lang.String	thrownException

Constructor Summary

protected

JavaCondition(java.lang.String name, java.lang.String expression, Declaration[] requiredDeclarations, Rule rule) Construct.

Method Summary

boolean	equals(java.lang.Object object)
java.lang.String	getName() Returns the name of the component
Declaration[]	getRequiredTupleMembers() Retrieve the Declaration s required for evaluating the expression.
SemanticRuleCompiler	getSemanticRuleCompiler()
java.lang.String	getSemanticType()
java.lang.String	getText()
java.lang.String	getThrownException()
int	hashCode()
boolean	isAllowed(Tuple tuple) Determine if the supplied Tuple is allowed by this condition.
boolean	isExceptionThrown()
void	setInvoker(Invoker invoker)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

semanticType

protected final java.lang.String semanticType

See Also:

Constant Field Values

name

protected final java.lang.String name

expression

protected final java.lang.String expression

rule

protected final Rule rule

requiredDeclarations

protected final Declaration[] requiredDeclarations

conditionInvoker

protected ConditionInvoker conditionInvoker

thrownException

protected final java.lang.String thrownException

See Also:

Constant Field Values

Constructor Detail

JavaCondition

protected JavaCondition(java.lang.String name,
                        java.lang.String expression,
                        Declaration[] requiredDeclarations,
                        Rule rule)
                 throws java.lang.Exception

Construct.

Parameters:

expression - The expression.

rule - The rule.

Throws:

javax.naming.ConfigurationException - If an error occurs while attempting to perform configuration.

java.lang.Exception

Method Detail

getSemanticType

public java.lang.String getSemanticType()

Specified by:

getSemanticType in interface SemanticComponent

isExceptionThrown

public boolean isExceptionThrown()

Specified by:

isExceptionThrown in interface SemanticInvokeable

getThrownException

public java.lang.String getThrownException()

Specified by:

getThrownException in interface SemanticInvokeable

getName

public java.lang.String getName()

Description copied from interface: SemanticComponent

Returns the name of the component

Specified by:

getName in interface SemanticComponent

getText

public java.lang.String getText()

Specified by:

getText in interface SemanticCondition

getRequiredTupleMembers

public Declaration[] getRequiredTupleMembers()

Retrieve the Declaration s required for evaluating the expression.

Specified by:

getRequiredTupleMembers in interface Condition

Returns:

The required declarations.

getSemanticRuleCompiler

public SemanticRuleCompiler getSemanticRuleCompiler()

Specified by:

getSemanticRuleCompiler in interface SemanticRule

setInvoker

public void setInvoker(Invoker invoker)

Specified by:

setInvoker in interface SemanticInvokeable

isAllowed

public boolean isAllowed(Tuple tuple)
                  throws ConditionException

Determine if the supplied Tuple is allowed by this condition.

Specified by:

isAllowed in interface Condition

Parameters:

tuple - The Tuple to test.

Returns:

true if the Tuple passes this condition, else false.

Throws:

ConditionException - if an error occurs during filtering.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object