org.apache.flink.table.catalog

Class FunctionCatalog

java.lang.Object

org.apache.flink.table.catalog.FunctionCatalog

@Internal
public final class FunctionCatalog
extends Object

Simple function catalog to store FunctionDefinitions in catalogs.

Note: This class can be cleaned up a lot once we drop the methods deprecated as part of FLIP-65. In the long-term, the class should be a part of catalog manager similar to DataTypeFactory.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FunctionCatalog.InlineCatalogFunction The CatalogFunction which holds an instantiated UDF.

Constructor Summary

Constructors

Constructor and Description
FunctionCatalog(org.apache.flink.configuration.ReadableConfig config, ResourceManager resourceManager, CatalogManager catalogManager, ModuleManager moduleManager)

Method Summary

Modifier and Type	Method and Description
FunctionLookup	asLookup(java.util.function.Function<String,org.apache.flink.table.catalog.UnresolvedIdentifier> parser) Creates a FunctionLookup to this FunctionCatalog.
boolean	dropCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier, boolean ignoreIfNotExist) Drops a catalog function by also considering temporary catalog functions.
org.apache.flink.table.catalog.CatalogFunction	dropTempCatalogFunction(org.apache.flink.table.catalog.ObjectIdentifier identifier, boolean ignoreIfNotExist) Drop a temporary catalog function.
boolean	dropTemporaryCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier, boolean ignoreIfNotExist) Drops a temporary catalog function.
boolean	dropTemporarySystemFunction(String name, boolean ignoreIfNotExist) Drops a temporary system function.
String[]	getFunctions() Get names of all functions, including temp system functions, system functions, temp catalog functions and catalog functions in the current catalog and current database.
String[]	getUserDefinedFunctions() Get names of all user defined functions, including temp system functions, temp catalog functions and catalog functions in the current catalog and current database.
Set<org.apache.flink.table.functions.FunctionIdentifier>	getUserDefinedFunctions(String catalogName, String databaseName) Get names of all user including temp system functions, temp catalog * functions and catalog functions in the specified catalog and specified database.
boolean	hasTemporaryCatalogFunction(org.apache.flink.table.catalog.ObjectIdentifier functionIdentifier) Check whether a temporary catalog function is already registered.
boolean	hasTemporarySystemFunction(String functionName) Check whether a temporary system function is already registered.
Optional<ContextResolvedFunction>	lookupFunction(org.apache.flink.table.catalog.UnresolvedIdentifier identifier)
void	registerCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier, Class<? extends org.apache.flink.table.functions.UserDefinedFunction> functionClass, boolean ignoreIfExists) Registers a catalog function by also considering temporary catalog functions.
void	registerFunctionJarResources(String functionName, List<org.apache.flink.table.resource.ResourceUri> resourceUris)
void	registerTempCatalogScalarFunction(org.apache.flink.table.catalog.ObjectIdentifier oi, org.apache.flink.table.functions.ScalarFunction function) Deprecated. Use registerTemporaryCatalogFunction(UnresolvedIdentifier, FunctionDefinition, boolean) instead.
void	registerTemporaryCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier, org.apache.flink.table.catalog.CatalogFunction catalogFunction, boolean ignoreIfExists) Registers a uninstantiated temporary catalog function.
void	registerTemporaryCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier, org.apache.flink.table.functions.FunctionDefinition definition, boolean ignoreIfExists) Registers a temporary catalog function.
void	registerTemporarySystemFunction(String name, org.apache.flink.table.catalog.CatalogFunction function, boolean ignoreIfExists)
void	registerTemporarySystemFunction(String name, org.apache.flink.table.functions.FunctionDefinition definition, boolean ignoreIfExists) Registers a temporary system function.
void	registerTemporarySystemFunction(String name, String fullyQualifiedName, org.apache.flink.table.catalog.FunctionLanguage language, boolean ignoreIfExists) Registers a uninstantiated temporary system function.
<T,ACC> void	registerTempSystemAggregateFunction(String name, org.apache.flink.table.functions.ImperativeAggregateFunction<T,ACC> function, org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType, org.apache.flink.api.common.typeinfo.TypeInformation<ACC> accType) Deprecated. Use registerTemporarySystemFunction(String, FunctionDefinition, boolean) instead.
void	registerTempSystemScalarFunction(String name, org.apache.flink.table.functions.ScalarFunction function) Deprecated. Use registerTemporarySystemFunction(String, FunctionDefinition, boolean) instead.
<T> void	registerTempSystemTableFunction(String name, org.apache.flink.table.functions.TableFunction<T> function, org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType) Deprecated. Use registerTemporarySystemFunction(String, FunctionDefinition, boolean) instead.
void	setPlannerTypeInferenceUtil(PlannerTypeInferenceUtil plannerTypeInferenceUtil)

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionCatalog

public FunctionCatalog(org.apache.flink.configuration.ReadableConfig config,
                       ResourceManager resourceManager,
                       CatalogManager catalogManager,
                       ModuleManager moduleManager)

Method Detail

setPlannerTypeInferenceUtil

public void setPlannerTypeInferenceUtil(PlannerTypeInferenceUtil plannerTypeInferenceUtil)

registerTemporarySystemFunction

public void registerTemporarySystemFunction(String name,
                                            org.apache.flink.table.functions.FunctionDefinition definition,
                                            boolean ignoreIfExists)

Registers a temporary system function.

registerTemporarySystemFunction

public void registerTemporarySystemFunction(String name,
                                            String fullyQualifiedName,
                                            org.apache.flink.table.catalog.FunctionLanguage language,
                                            boolean ignoreIfExists)

Registers a uninstantiated temporary system function.

dropTemporarySystemFunction

public boolean dropTemporarySystemFunction(String name,
                                           boolean ignoreIfNotExist)

Drops a temporary system function. Returns true if a function was dropped.

registerTemporaryCatalogFunction

public void registerTemporaryCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier,
                                             org.apache.flink.table.functions.FunctionDefinition definition,
                                             boolean ignoreIfExists)

Registers a temporary catalog function.

registerTemporaryCatalogFunction

public void registerTemporaryCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier,
                                             org.apache.flink.table.catalog.CatalogFunction catalogFunction,
                                             boolean ignoreIfExists)

Registers a uninstantiated temporary catalog function.

dropTemporaryCatalogFunction

public boolean dropTemporaryCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier,
                                            boolean ignoreIfNotExist)

Drops a temporary catalog function. Returns true if a function was dropped.

registerCatalogFunction

public void registerCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier,
                                    Class<? extends org.apache.flink.table.functions.UserDefinedFunction> functionClass,
                                    boolean ignoreIfExists)

Registers a catalog function by also considering temporary catalog functions.

dropCatalogFunction

public boolean dropCatalogFunction(org.apache.flink.table.catalog.UnresolvedIdentifier unresolvedIdentifier,
                                   boolean ignoreIfNotExist)

Drops a catalog function by also considering temporary catalog functions. Returns true if a function was dropped.

getUserDefinedFunctions

public String[] getUserDefinedFunctions()

Get names of all user defined functions, including temp system functions, temp catalog functions and catalog functions in the current catalog and current database.

getUserDefinedFunctions

public Set<org.apache.flink.table.functions.FunctionIdentifier> getUserDefinedFunctions(String catalogName,
                                                                                        String databaseName)

Get names of all user including temp system functions, temp catalog * functions and catalog functions in the specified catalog and specified database.

getFunctions

public String[] getFunctions()

Get names of all functions, including temp system functions, system functions, temp catalog functions and catalog functions in the current catalog and current database.

hasTemporaryCatalogFunction

public boolean hasTemporaryCatalogFunction(org.apache.flink.table.catalog.ObjectIdentifier functionIdentifier)

Check whether a temporary catalog function is already registered.

Parameters:

functionIdentifier - the object identifier of function

Returns:

whether the temporary catalog function exists in the function catalog

hasTemporarySystemFunction

public boolean hasTemporarySystemFunction(String functionName)

Check whether a temporary system function is already registered.

Parameters:

functionName - the name of the function

Returns:

whether the temporary system function exists in the function catalog

asLookup

public FunctionLookup asLookup(java.util.function.Function<String,org.apache.flink.table.catalog.UnresolvedIdentifier> parser)

Creates a FunctionLookup to this FunctionCatalog.

Parameters:

parser - parser to use for parsing identifiers

lookupFunction

public Optional<ContextResolvedFunction> lookupFunction(org.apache.flink.table.catalog.UnresolvedIdentifier identifier)

registerTempSystemScalarFunction

@Deprecated
public void registerTempSystemScalarFunction(String name,
                                                         org.apache.flink.table.functions.ScalarFunction function)

Deprecated. Use registerTemporarySystemFunction(String, FunctionDefinition, boolean) instead.

registerTempSystemTableFunction

@Deprecated
public <T> void registerTempSystemTableFunction(String name,
                                                            org.apache.flink.table.functions.TableFunction<T> function,
                                                            org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType)

Deprecated. Use registerTemporarySystemFunction(String, FunctionDefinition, boolean) instead.

registerTempSystemAggregateFunction

@Deprecated
public <T,ACC> void registerTempSystemAggregateFunction(String name,
                                                                    org.apache.flink.table.functions.ImperativeAggregateFunction<T,ACC> function,
                                                                    org.apache.flink.api.common.typeinfo.TypeInformation<T> resultType,
                                                                    org.apache.flink.api.common.typeinfo.TypeInformation<ACC> accType)

Deprecated. Use registerTemporarySystemFunction(String, FunctionDefinition, boolean) instead.

registerTempCatalogScalarFunction

@Deprecated
public void registerTempCatalogScalarFunction(org.apache.flink.table.catalog.ObjectIdentifier oi,
                                                          org.apache.flink.table.functions.ScalarFunction function)

Deprecated. Use registerTemporaryCatalogFunction(UnresolvedIdentifier, FunctionDefinition, boolean) instead.

dropTempCatalogFunction

public org.apache.flink.table.catalog.CatalogFunction dropTempCatalogFunction(org.apache.flink.table.catalog.ObjectIdentifier identifier,
                                                                              boolean ignoreIfNotExist)

Drop a temporary catalog function.

Parameters:

identifier - identifier of the function

ignoreIfNotExist - Flag to specify behavior when the function does not exist: if set to false, throw an exception, if set to true, do nothing.

Returns:

the removed catalog function, which is null if function doesn't exist and ignoreIfNotExist is true.

registerTemporarySystemFunction

public void registerTemporarySystemFunction(String name,
                                            org.apache.flink.table.catalog.CatalogFunction function,
                                            boolean ignoreIfExists)

registerFunctionJarResources

public void registerFunctionJarResources(String functionName,
                                         List<org.apache.flink.table.resource.ResourceUri> resourceUris)