Package io.delta.kernel.internal.util

Class ExpressionUtils

Object

io.delta.kernel.internal.util.ExpressionUtils

public class ExpressionUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
ExpressionUtils()

Method Summary

Modifier and Type	Method	Description
static Predicate	asPredicate(Expression expression)	Return an expression cast as a predicate, throw an error if it is not a predicate
static Predicate	createPredicate(String name, Expression left, Expression right, Optional<CollationIdentifier> collationIdentifier)	Utility method to create a binary predicate with an optional collation identifier
static Predicate	createPredicate(String name, List<Expression> children, Optional<CollationIdentifier> collationIdentifier)	Utility method to create a predicate with an optional collation identifier
static Expression	getLeft(Expression expression)	Utility method to return the left child of the binary input expression
static Expression	getRight(Expression expression)	Utility method to return the right child of the binary input expression
static Expression	getUnaryChild(Expression expression)	Utility method to return the single child of the unary input expression

Methods inherited from class java.lang.Object

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

Constructor Details

ExpressionUtils

public ExpressionUtils()

Method Details

asPredicate

public static Predicate asPredicate(Expression expression)

Return an expression cast as a predicate, throw an error if it is not a predicate

getLeft

public static Expression getLeft(Expression expression)

Utility method to return the left child of the binary input expression

getRight

public static Expression getRight(Expression expression)

Utility method to return the right child of the binary input expression

getUnaryChild

public static Expression getUnaryChild(Expression expression)

Utility method to return the single child of the unary input expression

createPredicate

public static Predicate createPredicate(String name,
 List<Expression> children,
 Optional<CollationIdentifier> collationIdentifier)

Utility method to create a predicate with an optional collation identifier

createPredicate

public static Predicate createPredicate(String name,
 Expression left,
 Expression right,
 Optional<CollationIdentifier> collationIdentifier)

Utility method to create a binary predicate with an optional collation identifier