Package org.apache.druid.math.expr

Class Exprs

java.lang.Object

org.apache.druid.math.expr.Exprs

public class Exprs
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final byte	EXPR_CACHE_KEY

Constructor Summary

Constructors

Constructor	Description
Exprs()

Method Summary

Modifier and Type	Method	Description
static Expr.BindingAnalysis	analyzeBindings(List<Expr> args)	Return a Expr.BindingAnalysis that represents an analysis of all provided args.
static UnsupportedOperationException	cannotVectorize()
static UnsupportedOperationException	cannotVectorize(String msg)
static UnsupportedOperationException	cannotVectorize(Expr expr)
static UnsupportedOperationException	cannotVectorize(Function function)
static List<Expr>	decomposeAnd(Expr expr)	Decomposes any expr into a list of exprs that, if ANDed together, are equivalent to the input expr.
static Optional<Equality>	decomposeEquals(Expr expr, String rightPrefix)	Decomposes an equality expr into an Equality.

Methods inherited from class java.lang.Object

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

Field Details

EXPR_CACHE_KEY

public static final byte EXPR_CACHE_KEY

See Also:

• Constant Field Values

Constructor Details

Exprs

public Exprs()

Method Details

cannotVectorize

public static UnsupportedOperationException cannotVectorize(Expr expr)

cannotVectorize

public static UnsupportedOperationException cannotVectorize(Function function)

cannotVectorize

public static UnsupportedOperationException cannotVectorize()

cannotVectorize

public static UnsupportedOperationException cannotVectorize(String msg)

analyzeBindings

public static Expr.BindingAnalysis analyzeBindings(List<Expr> args)

Return a Expr.BindingAnalysis that represents an analysis of all provided args.

decomposeAnd

public static List<Expr> decomposeAnd(Expr expr)

Decomposes any expr into a list of exprs that, if ANDed together, are equivalent to the input expr.

Parameters:

expr - any expr

Returns:

list of exprs that, if ANDed together, are equivalent to the input expr

decomposeEquals

public static Optional<Equality> decomposeEquals(Expr expr,
 String rightPrefix)

Decomposes an equality expr into an Equality. Used by join-related code to identify equi-joins.

Returns:

decomposed equality, or empty if the input expr was not an equality expr