Package org.apache.druid.query.expression

Class TimestampExtractExprMacro.TimestampExtractExpr

java.lang.Object

org.apache.druid.math.expr.ExprMacroTable.BaseMacroFunctionExpr

org.apache.druid.math.expr.ExprMacroTable.BaseScalarMacroFunctionExpr

org.apache.druid.query.expression.TimestampExtractExprMacro.TimestampExtractExpr

All Implemented Interfaces:

Cacheable, Expr, ExprMacroTable.ExprMacroFunctionExpr

Enclosing class:

TimestampExtractExprMacro

public class TimestampExtractExprMacro.TimestampExtractExpr
extends ExprMacroTable.BaseScalarMacroFunctionExpr

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.druid.math.expr.Expr

Expr.BindingAnalysis, Expr.InputBindingInspector, Expr.ObjectBinding, Expr.Shuttle, Expr.VectorInputBinding, Expr.VectorInputBindingInspector

Field Summary

Fields inherited from class org.apache.druid.math.expr.ExprMacroTable.BaseMacroFunctionExpr

args, macro

Fields inherited from interface org.apache.druid.math.expr.Expr

ARG_JOINER, NULL_LITERAL

Method Summary

Modifier and Type	Method	Description
ExprEval	eval(Expr.ObjectBinding bindings)	Evaluate the Expr with the bindings which supply IdentifierExpr with their values, producing an ExprEval with the result.
ExpressionType	getOutputType(Expr.InputBindingInspector inspector)	Given an Expr.InputBindingInspector, compute what the output ExpressionType will be for this expression.

Methods inherited from class org.apache.druid.math.expr.ExprMacroTable.BaseScalarMacroFunctionExpr

supplyAnalyzeInputs

Methods inherited from class org.apache.druid.math.expr.ExprMacroTable.BaseMacroFunctionExpr

analyzeInputs, asVectorProcessor, canVectorize, equals, getArgs, hashCode, stringify, toString, visit

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.druid.math.expr.Expr

asColumnIndexSupplier, asSingleThreaded, canFallbackVectorize, decorateCacheKeyBuilder, getBindingIfIdentifier, getCacheKey, getIdentifierExprIfIdentifierExpr, getIdentifierIfIdentifier, getLiteralValue, isIdentifier, isLiteral, isNullLiteral

Method Detail

eval

@Nonnull
public ExprEval eval(Expr.ObjectBinding bindings)

Description copied from interface: Expr

Evaluate the Expr with the bindings which supply IdentifierExpr with their values, producing an ExprEval with the result.

getOutputType

@Nullable
public ExpressionType getOutputType(Expr.InputBindingInspector inspector)

Description copied from interface: Expr

Given an Expr.InputBindingInspector, compute what the output ExpressionType will be for this expression. In the vectorized expression engine, if Expr.canVectorize(InputBindingInspector) returns true, a return value of null MUST ONLY indicate that the expression has all null inputs (non-existent columns) or null constants for the entire expression. Otherwise, all vectorizable expressions must produce an output type to correctly operate with the vectorized engine. Outside the context of vectorized expressions, a return value of null can also indicate that the given type information was not enough to resolve the output type, so the expression must be evaluated using default Expr.eval(org.apache.druid.math.expr.Expr.ObjectBinding) handling where types are only known after evaluation, through ExprEval.type(), such as transform expressions at ingestion time