com.bigdata.bop.join

Interface AccessPathJoinAnnotations

All Superinterfaces:

BOp.Annotations, BufferAnnotations, JoinAnnotations, PipelineOp.Annotations

All Known Subinterfaces:

DistinctTermScanOp.Annotations, FastRangeCountOp.Annotations, HashJoinOp.Annotations, HTreeHashJoinOp.Annotations, HTreeMergeJoin.Annotations, JVMHashJoinOp.Annotations, JVMMergeJoin.Annotations, PipelineJoin.Annotations

public interface AccessPathJoinAnnotations
extends JoinAnnotations

Interface declares additional annotations for joins against an IAccessPath (versus a subquery or temporary solution set).

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
static String	PREDICATE The IPredicate which is used to generate the IAccessPaths during the join.

Fields inherited from interface com.bigdata.bop.join.JoinAnnotations

CONSTRAINTS, DEFAULT_LIMIT, JOIN_TYPE, LIMIT, SELECT

Fields inherited from interface com.bigdata.bop.PipelineOp.Annotations

ALT_SINK_REF, DEFAULT_LAST_PASS, DEFAULT_MAX_MEMORY, DEFAULT_MAX_MESSAGES_PER_TASK, DEFAULT_MAX_PARALLEL, DEFAULT_PIPELINE_QUEUE_CAPACITY, DEFAULT_PIPELINED, DEFAULT_REORDER_SOLUTIONS, DEFAULT_SHARED_STATE, LAST_PASS, MAX_MEMORY, MAX_MESSAGES_PER_TASK, MAX_PARALLEL, PIPELINE_QUEUE_CAPACITY, PIPELINED, REORDER_SOLUTIONS, SHARED_STATE, SINK_REF

Fields inherited from interface com.bigdata.bop.BOp.Annotations

BOP_ID, CONTROLLER, DEFAULT_CONTROLLER, DEFAULT_EVALUATION_CONTEXT, DEFAULT_TIMEOUT, EVALUATION_CONTEXT, NAMESPACE, TIMEOUT

Fields inherited from interface com.bigdata.bop.BufferAnnotations

CHUNK_CAPACITY, CHUNK_OF_CHUNKS_CAPACITY, CHUNK_TIMEOUT, chunkTimeoutUnit, DEFAULT_CHUNK_CAPACITY, DEFAULT_CHUNK_OF_CHUNKS_CAPACITY, DEFAULT_CHUNK_TIMEOUT

Field Detail

PREDICATE

static final String PREDICATE

The IPredicate which is used to generate the IAccessPaths during the join.

Note: Scale-out relies on this annotation when mapping intermediate results across the shards on a cluster so they can be joined on the nodes which have the data for the shards on which the IAccessPath must read.