org.apache.hudi.source

Class ExpressionPredicates

java.lang.Object

org.apache.hudi.source.ExpressionPredicates

public class ExpressionPredicates
extends Object

Tool to predicate the ResolvedExpressions.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExpressionPredicates.AlwaysNull A special predicate which is not possible to match any condition.
static class	ExpressionPredicates.And An AND predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.ColumnPredicate Column predicate which depends on the given field.
static class	ExpressionPredicates.Equals An EQUALS predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.GreaterThan A GREATER_THAN predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.GreaterThanOrEqual A GREATER_THAN_OR_EQUAL predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.In An IN predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.LessThan A LESS_THAN predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.LessThanOrEqual A LESS_THAN_OR_EQUAL predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.Not A NOT predicate to negate a predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.NotEquals A NOT_EQUALS predicate that can be evaluated by the FileInputFormat.
static class	ExpressionPredicates.Or An OR predicate that can be evaluated by the FileInputFormat.
static interface	ExpressionPredicates.Predicate A filter predicate that can be evaluated by the FileInputFormat.

Constructor Summary

Constructors

Constructor and Description
ExpressionPredicates()

Method Summary

Modifier and Type	Method and Description
static ExpressionPredicates.Predicate	fromExpression(org.apache.flink.table.expressions.CallExpression callExpression) Converts specific call expression to the predicate.
static List<ExpressionPredicates.Predicate>	fromExpression(List<org.apache.flink.table.expressions.ResolvedExpression> resolvedExpressions) Converts specific call expression list to the predicate list.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionPredicates

public ExpressionPredicates()

Method Detail

fromExpression

public static List<ExpressionPredicates.Predicate> fromExpression(List<org.apache.flink.table.expressions.ResolvedExpression> resolvedExpressions)

Converts specific call expression list to the predicate list.

Parameters:

resolvedExpressions - The resolved expressions to convert.

Returns:

The converted predicates.

fromExpression

public static ExpressionPredicates.Predicate fromExpression(org.apache.flink.table.expressions.CallExpression callExpression)

Converts specific call expression to the predicate.

Two steps to bind the call: 1. map the predicate instance; 2. bind the field reference;

Normalize the expression to simplify the subsequent decision logic: always put the literal expression in the RHS.

Parameters:

callExpression - The call expression to convert.

Returns:

The converted predicate.