io.crate.analyze

Class EvaluatingNormalizer

java.lang.Object

io.crate.analyze.EvaluatingNormalizer

public class EvaluatingNormalizer
extends java.lang.Object

the normalizer does symbol normalization and reference resolving if possible

E.g.: The query

and(true, eq(column_ref, 'someliteral'))

will be changed to

eq(column_ref, 'someliteral')

Constructor Summary

Constructors

Constructor and Description
EvaluatingNormalizer(Functions functions, RowGranularity granularity, ReplaceMode replaceMode, ReferenceResolver<? extends Input<?>> referenceResolver, FieldResolver fieldResolver)

Method Summary

Modifier and Type	Method and Description
static EvaluatingNormalizer	functionOnlyNormalizer(Functions functions, ReplaceMode replaceMode)
java.util.List<Symbol>	normalize(java.util.List<Symbol> symbols, TransactionContext context) Normalizes all symbols of a List.
Symbol	normalize(Symbol symbol, TransactionContext context)
void	normalizeInplace(java.util.List<Symbol> symbols, TransactionContext context) Normalizes all symbols of a List in place

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluatingNormalizer

public EvaluatingNormalizer(Functions functions,
                            RowGranularity granularity,
                            ReplaceMode replaceMode,
                            @Nullable
                            ReferenceResolver<? extends Input<?>> referenceResolver,
                            @Nullable
                            FieldResolver fieldResolver)

Parameters:

functions - function resolver

granularity - the maximum row granularity the normalizer should try to normalize

replaceMode - defines if symbols like functions can be mutated or if they have to be copied

referenceResolver - reference resolver which is used to resolve paths

fieldResolver - optional field resolver to resolve fields

Method Detail

functionOnlyNormalizer

public static EvaluatingNormalizer functionOnlyNormalizer(Functions functions,
                                                          ReplaceMode replaceMode)

normalize

public java.util.List<Symbol> normalize(java.util.List<Symbol> symbols,
                                        TransactionContext context)

Normalizes all symbols of a List. Does not return a new list if no changes occur.

Parameters:

symbols - the list to be normalized

Returns:

a list with normalized symbols

normalizeInplace

public void normalizeInplace(@Nullable
                             java.util.List<Symbol> symbols,
                             @Nullable
                             TransactionContext context)

Normalizes all symbols of a List in place

Parameters:

symbols - the list to be normalized

normalize

public Symbol normalize(@Nullable
                        Symbol symbol,
                        @Nullable
                        TransactionContext context)