Package org.apache.drill.metastore.expressions

Interface FilterExpression

All Known Implementing Classes:

DoubleExpressionPredicate, DoubleExpressionPredicate.And, DoubleExpressionPredicate.Or, IsPredicate, IsPredicate.IsNotNull, IsPredicate.IsNull, ListPredicate, ListPredicate.In, ListPredicate.NotIn, SimplePredicate, SimplePredicate.Equal, SimplePredicate.GreaterThan, SimplePredicate.GreaterThanOrEqual, SimplePredicate.LessThan, SimplePredicate.LessThanOrEqual, SimplePredicate.NotEqual, SingleExpressionPredicate, SingleExpressionPredicate.Not

public interface FilterExpression

Interface which defines filter expression types by which Metastore data can be read or deleted.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	FilterExpression.Operator	Indicates list of supported operators that can be used in filter expressions.
static interface	FilterExpression.Visitor<T>	Transforms FilterExpression implementations into suitable for Metastore implementation representation.

Method Summary

Modifier and Type	Method	Description
<T> T	accept(FilterExpression.Visitor<T> visitor)
static FilterExpression	and(FilterExpression right, FilterExpression left)
static FilterExpression	and(FilterExpression right, FilterExpression left, FilterExpression... expressions)
static <T> FilterExpression	equal(MetastoreColumn column, T value)
static <T> FilterExpression	greaterThan(MetastoreColumn column, T value)
static <T> FilterExpression	greaterThanOrEqual(MetastoreColumn column, T value)
static <T> FilterExpression	in(MetastoreColumn column, List<T> values)
static <T> FilterExpression	in(MetastoreColumn column, T... values)
static FilterExpression	isNotNull(MetastoreColumn column)
static FilterExpression	isNull(MetastoreColumn column)
static <T> FilterExpression	lessThan(MetastoreColumn column, T value)
static <T> FilterExpression	lessThanOrEqual(MetastoreColumn column, T value)
static FilterExpression	not(FilterExpression expression)
static <T> FilterExpression	notEqual(MetastoreColumn column, T value)
static <T> FilterExpression	notIn(MetastoreColumn column, List<T> values)
static <T> FilterExpression	notIn(MetastoreColumn column, T... values)
FilterExpression.Operator	operator()
static FilterExpression	or(FilterExpression right, FilterExpression left)

Method Details

operator

FilterExpression.Operator operator()

accept

<T> T accept(FilterExpression.Visitor<T> visitor)

equal

static <T> FilterExpression equal(MetastoreColumn column,
 T value)

notEqual

static <T> FilterExpression notEqual(MetastoreColumn column,
 T value)

lessThan

static <T> FilterExpression lessThan(MetastoreColumn column,
 T value)

lessThanOrEqual

static <T> FilterExpression lessThanOrEqual(MetastoreColumn column,
 T value)

greaterThan

static <T> FilterExpression greaterThan(MetastoreColumn column,
 T value)

greaterThanOrEqual

static <T> FilterExpression greaterThanOrEqual(MetastoreColumn column,
 T value)

in

static <T> FilterExpression in(MetastoreColumn column,
 List<T> values)

in

@SafeVarargs
static <T> FilterExpression in(MetastoreColumn column,
 T... values)

notIn

static <T> FilterExpression notIn(MetastoreColumn column,
 List<T> values)

notIn

@SafeVarargs
static <T> FilterExpression notIn(MetastoreColumn column,
 T... values)

isNull

static FilterExpression isNull(MetastoreColumn column)

isNotNull

static FilterExpression isNotNull(MetastoreColumn column)

not

static FilterExpression not(FilterExpression expression)

and

static FilterExpression and(FilterExpression right,
 FilterExpression left)

and

static FilterExpression and(FilterExpression right,
 FilterExpression left,
 FilterExpression... expressions)

or

static FilterExpression or(FilterExpression right,
 FilterExpression left)