Package com.aquima.interactions.expressions.r7.parser.nodes

Class PredicateNode

java.lang.Object

com.aquima.interactions.expressions.parser.ParseNodeBase

com.aquima.interactions.expressions.r7.parser.nodes.PredicateNode

All Implemented Interfaces:

IParseNode

public class PredicateNode
extends ParseNodeBase

This node holds the information for the EACH and EXISTS predicate nodes.

Since:

6.5

Author:

F. van der Meer

Constructor Summary

Constructors

Constructor	Description
PredicateNode(PredicateType type, IParseNode fromNode, String alias, IParseNode whereNode)	Constructs the parse node with the required arguments.

Method Summary

Modifier and Type	Method	Description
String	getAlias()	This method returns the alias for object in the from expression.
IParseNode	getFrom()	This method returns the node that should be used to gather the objects from.
PredicateType	getType()	This method returns the type of the predicate node.
IParseNode	getWhere()	This method returns the condition that should be applied to object in the from expression.

Methods inherited from class com.aquima.interactions.expressions.parser.ParseNodeBase

getEndPosition, getPosition, setPosition

Methods inherited from class java.lang.Object

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

Constructor Detail

PredicateNode

public PredicateNode(PredicateType type,
                     IParseNode fromNode,
                     String alias,
                     IParseNode whereNode)

Constructs the parse node with the required arguments.

Parameters:

type - The type of the predicate (EXISTS or EACH).

fromNode - Node used to gather the objects

alias - Alias that should be used for each object in the from expression (optional).

whereNode - Expression that should be used to filter objects in the from expression (optional).

Method Detail

getFrom

public IParseNode getFrom()

This method returns the node that should be used to gather the objects from.

Returns:

the node that should be used to gather the objects from.

getAlias

public String getAlias()

This method returns the alias for object in the from expression.

Returns:

the alias for object in the from expression.

getWhere

public IParseNode getWhere()

This method returns the condition that should be applied to object in the from expression.

Returns:

the condition that should be applied to object in the from expression.

getType

public PredicateType getType()

This method returns the type of the predicate node.

Returns:

the type of the predicate node.