Package com.helix.core.parser.ast

Class RuleNode

java.lang.Object

com.helix.core.parser.ast.RuleNode

All Implemented Interfaces:

Rule, ExpressionNode

public class RuleNode
extends Object
implements Rule, ExpressionNode

Composite AST node encapsulating a complete compiled rule definition and its parsed AST root.

Constructor Summary

Constructors

Constructor	Description
RuleNode(String name, String expression, ExpressionNode rootNode)
RuleNode(String name, String version, String description, String category, String expression, Map<String,Class<?>> inputSchema, ExpressionNode rootNode)
RuleNode(String name, String expression, Map<String,Class<?>> inputSchema, ExpressionNode rootNode)

Method Summary

Modifier and Type	Method	Description
<R> R	accept(AstVisitor<R> visitor)	Accepts an AST visitor.
String	getCategory()
String	getDescription()	Gets a description of what the rule does.
String	getExpression()	Gets the raw expression string representing the rule logic.
Map<String,Class<?>>	getInputSchema()	Gets the expected input schema mapping parameter names to expected types.
String	getName()	Gets the unique name of the rule.
ExpressionNode	getRootNode()
String	getVersion()	Gets the version of the rule.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

RuleNode

public RuleNode(String name,
 String expression,
 ExpressionNode rootNode)

RuleNode

public RuleNode(String name,
 String expression,
 Map<String,Class<?>> inputSchema,
 ExpressionNode rootNode)

RuleNode

public RuleNode(String name,
 String version,
 String description,
 String category,
 String expression,
 Map<String,Class<?>> inputSchema,
 ExpressionNode rootNode)

Method Details

getName

public String getName()

Description copied from interface: Rule

Gets the unique name of the rule.

Specified by:

getName in interface Rule

Returns:

rule name

getVersion

public String getVersion()

Description copied from interface: Rule

Gets the version of the rule.

Specified by:

getVersion in interface Rule

Returns:

rule version

getDescription

public String getDescription()

Description copied from interface: Rule

Gets a description of what the rule does.

Specified by:

getDescription in interface Rule

Returns:

rule description

getCategory

public String getCategory()

getExpression

public String getExpression()

Description copied from interface: Rule

Gets the raw expression string representing the rule logic.

Specified by:

getExpression in interface Rule

Returns:

expression string

getInputSchema

public Map<String,Class<?>> getInputSchema()

Description copied from interface: Rule

Gets the expected input schema mapping parameter names to expected types.

Specified by:

getInputSchema in interface Rule

Returns:

map of variable name to type class

getRootNode

public ExpressionNode getRootNode()

accept

public <R> R accept(AstVisitor<R> visitor)

Description copied from interface: ExpressionNode

Accepts an AST visitor.

Specified by:

accept in interface ExpressionNode

Type Parameters:

R - return type

Parameters:

visitor - the visitor

Returns:

result from visitor

toString

public String toString()

Overrides:

toString in class Object