com.redhat.lightblue.assoc.ep

Class Searches

java.lang.Object

com.redhat.lightblue.assoc.ep.Searches

public final class Searches
extends Object

This class contains the different variations of search and assembly algorithmss as static methods

Method Summary

Modifier and Type	Method and Description
static QueryExpression	and(List<QueryExpression> list)
static QueryExpression	and(QueryExpression... q) Combines queries with AND.
static void	associateDocs(ResultDocument parentDoc, ChildSlot parentSlot, List<ResultDocument> childDocs, AssociationQuery aq) Associate child documents with their parents.
static void	associateDocs(ResultDocument parentDoc, List<ResultDocument> childDocs, AssociationQuery aq) Associates child documents obtained from 'aq' to all the slots in the parent document
static QueryExpression	combine(NaryLogicalOperator op, List<QueryExpression> list)
static Map<ChildSlot,QueryExpression>	writeChildQueriesFromParentDoc(AssociationQuery aq, ResultDocument parentDocument) Given a parent document and an association query, returns a query for each slot that will be used to retrieve the child documents that will be attached to that slot
static List<QueryExpression>	writeQueriesForJoinTuple(JoinTuple tuple, ExecutionBlock childBlock) Writes queries form a join tuple

Methods inherited from class java.lang.Object

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

Method Detail

writeChildQueriesFromParentDoc

public static Map<ChildSlot,QueryExpression> writeChildQueriesFromParentDoc(AssociationQuery aq,
                                                                            ResultDocument parentDocument)

Given a parent document and an association query, returns a query for each slot that will be used to retrieve the child documents that will be attached to that slot

writeQueriesForJoinTuple

public static List<QueryExpression> writeQueriesForJoinTuple(JoinTuple tuple,
                                                             ExecutionBlock childBlock)

Writes queries form a join tuple

associateDocs

public static void associateDocs(ResultDocument parentDoc,
                                 List<ResultDocument> childDocs,
                                 AssociationQuery aq)

Associates child documents obtained from 'aq' to all the slots in the parent document

associateDocs

public static void associateDocs(ResultDocument parentDoc,
                                 ChildSlot parentSlot,
                                 List<ResultDocument> childDocs,
                                 AssociationQuery aq)

Associate child documents with their parents. The association query is for the association from the child to the parent, so caller must flip it before sending it in if necessary. The caller also make sure parentDocs is a unique stream.

Parameters:

parentDoc - The parent document

parentSlot - The slot in parent docuemnt to which the results will be attached

childDocs - The child documents

aq - The association query from parent to child. This may not be the same association query between the blocks. If the child block is before the parent block, a new aq must be constructed for the association from the parent to the child

and

public static QueryExpression and(QueryExpression... q)

Combines queries with AND. Queries can be null, but at least one of them must be non-null

and

public static QueryExpression and(List<QueryExpression> list)

combine

public static QueryExpression combine(NaryLogicalOperator op,
                                      List<QueryExpression> list)