iot.jcypher.query.factories.clause

Class RETURN

java.lang.Object

iot.jcypher.query.factories.clause.RETURN

public class RETURN
extends Object

JCYPHER CLAUSE

Constructor Summary

Constructors

Constructor and Description
RETURN()

Method Summary

Methods

Modifier and Type	Method and Description
static AggregateDistinct	aggregate() JCYPHER return the result of performing an aggregate function like sum(...), avg(...), ...
static RTerminal	ALL() JCYPHER return all nodes, relationships and paths found in a query, e.g.
static RElement<RElement<?>>	collection(ICollectExpression C) JCYPHER return the result of a collection expression Use Factory Class C to create a Collection Expressions e.g.
static RElement<RElement<?>>	collection(JcCollection collection) JCYPHER return a collection e.g.
static RCount	count() JCYPHER return the size of a collection e.g.
static RDistinct	DISTINCT() JCYPHER return unique results e.g.
static RElement<RElement<?>>	evalPredicate(Concatenator P) JCYPHER return the result of evaluating a Predicate Expression (true or false) Use Factory Class P to create a Predicate Expressions e.g.
static RElement<RElement<?>>	existsPattern(IElement X) JCYPHER try to match a pattern against the graph.
static RSortable	value(JcValue element) JCYPHER select a named (identified) value e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

RETURN

public RETURN()

Method Detail

ALL

public static RTerminal ALL()

JCYPHER

return all nodes, relationships and paths found in a query,

e.g. RETURN.ALL()

value

public static RSortable value(JcValue element)

JCYPHER

select a named (identified) value

e.g. RETURN.value(n)

or an expression like RETURN.value(n.property("age")) to be returned

evalPredicate

public static RElement<RElement<?>> evalPredicate(Concatenator P)

JCYPHER

return the result of evaluating a Predicate Expression (true or false)

Use Factory Class P to create a Predicate Expressions

e.g. RETURN.evalPredicate(P.valueOf(a.property("age")).GT(30))

existsPattern

public static RElement<RElement<?>> existsPattern(IElement X)

JCYPHER

try to match a pattern against the graph. If a match is found return true else return false

Use Factory Class X to create a Pattern Expressions

e.g. RETURN.existsPattern(X.node(n)...)

collection

public static RElement<RElement<?>> collection(ICollectExpression C)

JCYPHER

return the result of a collection expression

Use Factory Class C to create a Collection Expressions

e.g. RETURN.collection(C.COLLECT().property("name").from(nds))

collection

public static RElement<RElement<?>> collection(JcCollection collection)

JCYPHER

return a collection

e.g. RETURN.collection(p.nodes())

or RETURN.collection(n.labels())

aggregate

public static AggregateDistinct aggregate()

JCYPHER

return the result of performing an aggregate function like sum(...), avg(...), ...

e.g. RETURN.aggregate().sum(n.property(amount))

count

public static RCount count()

JCYPHER

return the size of a collection

e.g. RETURN.count().value(p.nodes())

DISTINCT

public static RDistinct DISTINCT()

JCYPHER

return unique results

e.g. RETURN.DISTINCT().collection(p.nodes())