io.crate.analyze.relations

Class QuerySplitter

java.lang.Object

io.crate.analyze.relations.QuerySplitter

public class QuerySplitter
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
QuerySplitter()

Method Summary

Modifier and Type	Method and Description
static java.util.Map<java.util.Set<QualifiedName>,Symbol>	split(Symbol symbol) splits a (function) symbol into multiple symbols where each symbol has 2 or more relations.

Methods inherited from class java.lang.Object

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

Constructor Detail

QuerySplitter

public QuerySplitter()

Method Detail

split

public static java.util.Map<java.util.Set<QualifiedName>,Symbol> split(Symbol symbol)

splits a (function) symbol into multiple symbols where each symbol has 2 or more relations.

E.g.

     t1.x = t2.x and t2.x = t3.x
 

Will be split into:

     t1.x = t2.x  ->  t1, t2
     t2.x = t3.x  ->  t2, t3