Package io.deephaven.server.table.ops.filter

Class FlipNonReferenceMatchExpression

java.lang.Object

io.deephaven.server.table.ops.filter.AbstractNormalizeFilters

io.deephaven.server.table.ops.filter.FlipNonReferenceMatchExpression

All Implemented Interfaces:

FilterVisitor<Condition>

public class FlipNonReferenceMatchExpression
extends AbstractNormalizeFilters

Enforces that all IN-type expressions have a reference on the left side and only literals on the right side. Any non-reference on the left or reference on the right will trigger the entire IN-type expression being replaced with an OR or AND, with a sub-IN for each expression on the right side. Examples: o ColumnA in 1, 2, 3 - left as-is o ColumnA in 1, 2, ColumnB - rewritten as (ColumnA in 1 OR ColumnA in 2 OR ColumnA in ColumnB) o 1 in 3, 4, 5 - will be rewritten as (3 in 1 OR 4 in 1 OR 5 in 1). This is a silly case, but we're not judging. At this step. o 1 in ColumnA, 4, 5 - will be rewritten as (ColumnA in 1 OR 4 in 1 OR 5 in 1) o 1 in ColumnA - will be rewritten as ColumnA in 1 o ColumnA in ColumnB - will be rewritten as ColumnB in ColumnA. Note that like the second example, this isn't productive on its own, but as a pair with a reference on the right, it will be noticed by ConvertInvalidInExpressions. It is assumed that some time after this step, related "in" expressions will be merged together, and that these one-off expressions will get checked later.

Constructor Summary

Constructors

Constructor	Description
FlipNonReferenceMatchExpression()

Method Summary

Modifier and Type	Method	Description
static Condition	exec(Condition filter)
Condition	onIn(Value target, List<Value> candidatesList, CaseSensitivity caseSensitivity, MatchType matchType)

Methods inherited from class io.deephaven.server.table.ops.filter.AbstractNormalizeFilters

onAnd, onComparison, onContains, onInvoke, onIsNull, onMatches, onNot, onOr, onSearch

Methods inherited from class java.lang.Object

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

Constructor Details

FlipNonReferenceMatchExpression

public FlipNonReferenceMatchExpression()

Method Details

exec

public static Condition exec(Condition filter)

onIn

public Condition onIn(Value target,
 List<Value> candidatesList,
 CaseSensitivity caseSensitivity,
 MatchType matchType)

Specified by:

onIn in interface FilterVisitor<Condition>

Overrides:

onIn in class AbstractNormalizeFilters