Package org.apache.flink.table.expressions.resolver.rules

Class ResolverRules

java.lang.Object

org.apache.flink.table.expressions.resolver.rules.ResolverRules

@Internal
public final class ResolverRules
extends Object

Contains instances of ResolverRule.

Field Summary

Fields

Modifier and Type	Field	Description
static final ResolverRule	EXPAND_COLUMN_FUNCTIONS	Resolves column functions to corresponding fields of inputs.
static final ResolverRule	FIELD_RESOLVE	Resolves UnresolvedReferenceExpression.
static final ResolverRule	FLATTEN_STAR_REFERENCE	Resolves '*' expressions to corresponding fields of inputs.
static final ResolverRule	LOOKUP_CALL_BY_NAME	Looks up unresolved call by name.
static final ResolverRule	OVER_WINDOWS	Concatenates over aggregations with corresponding over window.
static final ResolverRule	QUALIFY_BUILT_IN_FUNCTIONS	Looks up unresolved calls of built-in functions to make them fully qualified.
static final ResolverRule	RESOLVE_CALL_BY_ARGUMENTS	Resolves call based on argument types.
static final ResolverRule	RESOLVE_SQL_CALL	Resolves SqlCallExpressions.
static final ResolverRule	UNWRAP_API_EXPRESSION	Unwraps all ApiExpression.

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

FIELD_RESOLVE

public static final ResolverRule FIELD_RESOLVE

Resolves UnresolvedReferenceExpression. See ReferenceResolverRule for details.

RESOLVE_SQL_CALL

public static final ResolverRule RESOLVE_SQL_CALL

Resolves SqlCallExpressions.

RESOLVE_CALL_BY_ARGUMENTS

public static final ResolverRule RESOLVE_CALL_BY_ARGUMENTS

Resolves call based on argument types. See ResolveCallByArgumentsRule for details.

LOOKUP_CALL_BY_NAME

public static final ResolverRule LOOKUP_CALL_BY_NAME

Looks up unresolved call by name. See LookupCallByNameRule for details.

OVER_WINDOWS

public static final ResolverRule OVER_WINDOWS

Concatenates over aggregations with corresponding over window. See OverWindowResolverRule for details.

FLATTEN_STAR_REFERENCE

public static final ResolverRule FLATTEN_STAR_REFERENCE

Resolves '*' expressions to corresponding fields of inputs. See StarReferenceFlatteningRule for details.

EXPAND_COLUMN_FUNCTIONS

public static final ResolverRule EXPAND_COLUMN_FUNCTIONS

Resolves column functions to corresponding fields of inputs. See ExpandColumnFunctionsRule for details.

QUALIFY_BUILT_IN_FUNCTIONS

public static final ResolverRule QUALIFY_BUILT_IN_FUNCTIONS

Looks up unresolved calls of built-in functions to make them fully qualified.

UNWRAP_API_EXPRESSION

public static final ResolverRule UNWRAP_API_EXPRESSION

Unwraps all ApiExpression.