com.redhat.lightblue.assoc

Class CompositeFindImpl

java.lang.Object

com.redhat.lightblue.assoc.CompositeFindImpl

All Implemented Interfaces:

Finder

public class CompositeFindImpl
extends Object
implements Finder

Finder for searches involving composite entities This implementation builds a search and retrieval plan based on the query plan. The generation of search plan is optional, if it discovers that the entities can be searched and retrieve with a single plan, it only generates a retrieval plan. The retrieval plan has the same structure as the entity composite metadata. First the documents for the root entity are retrieved, then, recursively, the associated documents. The search plan, if exists, has a different structure than the document structure. It is based on the request query, and terminates as soon as the root entity documents are retrieved. Once the root documents are retrieved, that list is used to execute the retrieval plan.

Constructor Summary

Constructors

Constructor and Description
CompositeFindImpl(CompositeMetadata md)

Method Summary

Modifier and Type	Method and Description
void	explain(OperationContext ctx, CRUDFindRequest req)
CRUDFindResponse	find(OperationContext ctx, CRUDFindRequest req)
void	setParallelism(int n) Set maximum number of threads that can run in parallel.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeFindImpl

public CompositeFindImpl(CompositeMetadata md)

Method Detail

setParallelism

public void setParallelism(int n)

Set maximum number of threads that can run in parallel. There's a hard limit on 10

explain

public void explain(OperationContext ctx,
                    CRUDFindRequest req)

Specified by:

explain in interface Finder

find

public CRUDFindResponse find(OperationContext ctx,
                             CRUDFindRequest req)

Specified by:

find in interface Finder