Uses of Interface
org.apache.drill.exec.planner.index.FunctionalIndexInfo

Packages that use FunctionalIndexInfo

Package	Description
org.apache.drill.exec.planner.index
org.apache.drill.exec.planner.index.generators

Uses of FunctionalIndexInfo in org.apache.drill.exec.planner.index

Methods in org.apache.drill.exec.planner.index that return FunctionalIndexInfo

Modifier and Type	Method	Description
FunctionalIndexInfo	DrillIndexDescriptor.getFunctionalInfo()
FunctionalIndexInfo	IndexDescriptor.getFunctionalInfo()	Get the functional index information associated with this index (Functional indexes are indexes involving expressions e.g CAST(a as INT).

Methods in org.apache.drill.exec.planner.index with parameters of type FunctionalIndexInfo

Modifier and Type	Method	Description
static org.apache.calcite.rel.RelCollation	IndexPlanUtils.buildCollationLowerProject(List<org.apache.calcite.rex.RexNode> projectRexs, org.apache.calcite.rel.RelNode input, FunctionalIndexInfo indexInfo)	Build collation property for the 'lower' project, the one closer to the Scan
static org.apache.calcite.rel.RelCollation	IndexPlanUtils.buildCollationProject(List<org.apache.calcite.rex.RexNode> projectRexs, DrillProjectRelBase project, org.apache.calcite.rel.RelNode input, FunctionalIndexInfo indexInfo, IndexCallContext context)	Build collation property for project, the one closer to the Scan
static org.apache.calcite.rel.RelCollation	IndexPlanUtils.buildCollationUpperProject(List<org.apache.calcite.rex.RexNode> projectRexs, org.apache.calcite.rel.RelCollation inputCollation, FunctionalIndexInfo indexInfo, Map<Integer,List<org.apache.calcite.rex.RexNode>> collationFilterMap)	Build collation property for the 'upper' project, the one above the filter
static org.apache.calcite.rex.RexNode	FunctionalIndexHelper.convertConditionForIndexScan(org.apache.calcite.rex.RexNode idxCondition, org.apache.calcite.rel.RelNode origScan, org.apache.calcite.rel.type.RelDataType idxRowType, org.apache.calcite.rex.RexBuilder builder, FunctionalIndexInfo functionInfo)
static org.apache.calcite.rel.type.RelDataType	FunctionalIndexHelper.convertRowTypeForIndexScan(DrillScanRelBase origScan, IndexableExprMarker idxMarker, IndexGroupScan idxScan, FunctionalIndexInfo functionInfo)	For IndexScan in non-covering case, rowType to return contains only row_key('_id') of primary table.
static boolean	IndexPlanUtils.isCoveringIndex(IndexCallContext indexContext, FunctionalIndexInfo functionInfo)	For a particular table scan for table T1 and an index on that table, find out if it is a covering index
static org.apache.calcite.rex.RexNode	IndexPlanUtils.rewriteFunctionalRex(IndexCallContext indexContext, DrillParseContext parseContext, DrillProjectRelBase project, org.apache.calcite.rel.RelNode scan, org.apache.calcite.rex.RexNode toRewriteRex, org.apache.calcite.rel.type.RelDataType newRowType, FunctionalIndexInfo functionInfo)	A RexNode forest with three RexNodes for expressions "cast(a.q as int) * 2, b+c, concat(a.q, " world")" on Scan RowType('a', 'b', 'c') will be like this: (0)Call:"*" Call:"concat" / \ / \ (1)Call:CAST 2 Call:"+" (5)Call:ITEM ' world' / \ / \ / \ (2)Call:ITEM TYPE:INT (3)$1 (4)$2 $0 'q' / \ $0 'q' So for above expressions, when visiting the RexNode trees using PathInExpr, we could mark indexed expressions in the trees, as shown in the diagram above are the node (1), then collect the schema paths in the indexed expression but found out of the indexed expression -- node (5), and other regular schema paths (3) (4)
static org.apache.calcite.rel.type.RelDataType	FunctionalIndexHelper.rewriteFunctionalRowType(org.apache.calcite.rel.RelNode origScan, IndexCallContext indexContext, FunctionalIndexInfo functionInfo)
static org.apache.calcite.rel.type.RelDataType	FunctionalIndexHelper.rewriteFunctionalRowType(org.apache.calcite.rel.RelNode origScan, IndexCallContext indexContext, FunctionalIndexInfo functionInfo, Collection<SchemaPath> addedPaths)	if a field in rowType serves only the to-be-replaced column(s), we should replace it with new name "$1", otherwise we should keep this dataTypeField and add a new one for "$1"
static List<SchemaPath>	IndexPlanUtils.rewriteFunctionColumn(List<SchemaPath> paths, FunctionalIndexInfo functionInfo, List<SchemaPath> addedPaths)	For IndexGroupScan, if a column is only appeared in the should-be-renamed function, this column is to-be-replaced column, we replace that column(schemaPath) from 'a.b' to '$1' in the list of SchemaPath.

Uses of FunctionalIndexInfo in org.apache.drill.exec.planner.index.generators

Fields in org.apache.drill.exec.planner.index.generators declared as FunctionalIndexInfo

Modifier and Type	Field	Description
protected final FunctionalIndexInfo	CoveringIndexPlanGenerator.functionInfo
protected final FunctionalIndexInfo	CoveringPlanNoFilterGenerator.functionInfo
protected final FunctionalIndexInfo	NonCoveringIndexPlanGenerator.functionInfo

Constructors in org.apache.drill.exec.planner.index.generators with parameters of type FunctionalIndexInfo

Modifier	Constructor	Description
	CoveringIndexPlanGenerator(IndexLogicalPlanCallContext indexContext, FunctionalIndexInfo functionInfo, IndexGroupScan indexGroupScan, org.apache.calcite.rex.RexNode indexCondition, org.apache.calcite.rex.RexNode remainderCondition, org.apache.calcite.rex.RexBuilder builder, PlannerSettings settings)
	CoveringPlanNoFilterGenerator(IndexCallContext indexContext, FunctionalIndexInfo functionInfo, boolean isSingleton, PlannerSettings settings)