Package dev.frostlake.metastore.model

Class Function

java.lang.Object

dev.frostlake.metastore.SqlObject

dev.frostlake.metastore.model.Function

All Implemented Interfaces:

Taggable

public class Function
extends SqlObject

Field Summary

Fields inherited from class dev.frostlake.metastore.SqlObject

comment, createdTime, name, owner

Constructor Summary

Constructors

Constructor	Description
Function(String name, List<Parameter> parameters, DataType returnType, String body, boolean isTableFunction)
Function(String name, List<Parameter> parameters, DataType returnType, String body, boolean isTableFunction, String language)
Function(String name, List<Parameter> parameters, DataType returnType, String body, boolean isTableFunction, String language, String handler, String runtimeVersion)
Function(String name, List<Parameter> parameters, DataType returnType, List<Parameter> returnColumns, String body, boolean isTableFunction, String language, String handler, String runtimeVersion)

Method Summary

Modifier and Type	Method	Description
String	getBody()
String	getHandler()
List<String>	getImports()
String	getLanguage()	The declared language as its canonical uppercase name (e.g.
String	getNullHandling()
String	getObjectType()	Get the type of this SQL object (e.g., "TABLE", "VIEW", "DATABASE") Subclasses should override to provide their specific type
List<Parameter>	getParameters()
List<Parameter>	getReturnColumns()
DataType	getReturnType()
String	getRuntimeVersion()
UdfLanguage	getUdfLanguage()	The declared language as a typed UdfLanguage (for runtime dispatch); UdfLanguage.SQL by default.
String	getVolatility()
boolean	isMemoizable()	MEMOIZABLE, which the account reports in SHOW FUNCTIONS and INFORMATION_SCHEMA.FUNCTIONS.
boolean	isSecure()
boolean	isTableFunction()
boolean	isTemporary()	A TEMPORARY (TEMP / VOLATILE) function lives only as long as the session that created it, the same lifetime Frostlake gives a temporary table.
void	rename(String newName)	Rename this SQL object Note: Subclasses may override to add validation or mark as unsupported
void	setImports(List<String> imports)
void	setMemoizable(boolean memoizable)
void	setNullHandling(String v)
void	setSecure(boolean secure)
void	setTemporary(boolean temporary)
void	setVolatility(String v)

Methods inherited from class dev.frostlake.metastore.SqlObject

equals, getComment, getCreatedTime, getName, getOwner, getTagValue, getTagValues, hashCode, setComment, setName, setOwner, setTag, toString, unsetTag, withoutTrailingSemicolon

Methods inherited from class java.lang.Object

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

Constructor Details

Function

public Function(String name,
 List<Parameter> parameters,
 DataType returnType,
 String body,
 boolean isTableFunction)

Function

public Function(String name,
 List<Parameter> parameters,
 DataType returnType,
 String body,
 boolean isTableFunction,
 String language)

Function

public Function(String name,
 List<Parameter> parameters,
 DataType returnType,
 String body,
 boolean isTableFunction,
 String language,
 String handler,
 String runtimeVersion)

Function

public Function(String name,
 List<Parameter> parameters,
 DataType returnType,
 List<Parameter> returnColumns,
 String body,
 boolean isTableFunction,
 String language,
 String handler,
 String runtimeVersion)

Method Details

getParameters

public List<Parameter> getParameters()

getReturnColumns

public List<Parameter> getReturnColumns()

getReturnType

public DataType getReturnType()

getBody

public String getBody()

isTableFunction

public boolean isTableFunction()

getLanguage

public String getLanguage()

The declared language as its canonical uppercase name (e.g. "PYTHON"); "SQL" by default.

getUdfLanguage

public UdfLanguage getUdfLanguage()

The declared language as a typed UdfLanguage (for runtime dispatch); UdfLanguage.SQL by default.

getHandler

public String getHandler()

getRuntimeVersion

public String getRuntimeVersion()

getNullHandling

public String getNullHandling()

setNullHandling

public void setNullHandling(String v)

getVolatility

public String getVolatility()

setVolatility

public void setVolatility(String v)

isSecure

public boolean isSecure()

setSecure

public void setSecure(boolean secure)

isMemoizable

public boolean isMemoizable()

MEMOIZABLE, which the account reports in SHOW FUNCTIONS and INFORMATION_SCHEMA.FUNCTIONS. The result is not cached: for a deterministic body a cached and a recomputed result cannot be told apart.

setMemoizable

public void setMemoizable(boolean memoizable)

isTemporary

public boolean isTemporary()

A TEMPORARY (TEMP / VOLATILE) function lives only as long as the session that created it, the same lifetime Frostlake gives a temporary table. Live also makes it invisible to other sessions and lets it shadow a permanent object of the same name; Frostlake has one namespace per catalog, so it models the lifetime and not the isolation.

setTemporary

public void setTemporary(boolean temporary)

getImports

public List<String> getImports()

setImports

public void setImports(List<String> imports)

rename

public void rename(String newName)

Description copied from class: SqlObject

Rename this SQL object Note: Subclasses may override to add validation or mark as unsupported

Overrides:

rename in class SqlObject

Parameters:

newName - The new name for the object

getObjectType

public String getObjectType()

Description copied from class: SqlObject

Get the type of this SQL object (e.g., "TABLE", "VIEW", "DATABASE") Subclasses should override to provide their specific type

Specified by:

getObjectType in class SqlObject

Returns:

The object type as a string