Package org.apache.calcite.sql.advise

Class SqlAdvisorGetHintsFunction2

java.lang.Object

org.apache.calcite.sql.advise.SqlAdvisorGetHintsFunction2

All Implemented Interfaces:

Function, ImplementableFunction, TableFunction

public class SqlAdvisorGetHintsFunction2
extends java.lang.Object
implements TableFunction, ImplementableFunction

Table function that returns completion hints for a given SQL statement. This function adds replacement string column to previously existed SqlAdvisorGetHintsFunction

Field Summary

Fields

Modifier and Type	Field	Description
private static Expression	ADVISOR
private static java.lang.reflect.Method	GET_COMPLETION_HINTS
private static CallImplementor	IMPLEMENTOR
private static java.util.List<FunctionParameter>	PARAMETERS

Constructor Summary

Constructors

Constructor	Description
SqlAdvisorGetHintsFunction2()

Method Summary

Modifier and Type	Method	Description
static Enumerable<SqlAdvisorHint2>	getCompletionHints(SqlAdvisor advisor, java.lang.String sql, int pos)	Returns completion hints for a given SQL statement.
java.lang.reflect.Type	getElementType(java.util.List<java.lang.Object> arguments)	Returns the row type of the table yielded by this function when applied to given arguments.
CallImplementor	getImplementor()	Returns implementor that translates the function to linq4j expression.
java.util.List<FunctionParameter>	getParameters()	Returns the parameters of this function.
RelDataType	getRowType(RelDataTypeFactory typeFactory, java.util.List<java.lang.Object> arguments)	Returns the record type of the table yielded by this function when applied to given arguments.

Methods inherited from class java.lang.Object

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

Field Detail

ADVISOR

private static final Expression ADVISOR

GET_COMPLETION_HINTS

private static final java.lang.reflect.Method GET_COMPLETION_HINTS

IMPLEMENTOR

private static final CallImplementor IMPLEMENTOR

PARAMETERS

private static final java.util.List<FunctionParameter> PARAMETERS

Constructor Detail

SqlAdvisorGetHintsFunction2

public SqlAdvisorGetHintsFunction2()

Method Detail

getImplementor

public CallImplementor getImplementor()

Description copied from interface: ImplementableFunction

Returns implementor that translates the function to linq4j expression.

Specified by:

getImplementor in interface ImplementableFunction

Returns:

implementor that translates the function to linq4j expression.

getRowType

public RelDataType getRowType(RelDataTypeFactory typeFactory,
                              java.util.List<java.lang.Object> arguments)

Description copied from interface: TableFunction

Returns the record type of the table yielded by this function when applied to given arguments. Only literal arguments are passed, non-literal are replaced with default values (null, 0, false, etc).

Specified by:

getRowType in interface TableFunction

Parameters:

typeFactory - Type factory

arguments - arguments of a function call (only literal arguments are passed, nulls for non-literal ones)

Returns:

row type of the table

getElementType

public java.lang.reflect.Type getElementType(java.util.List<java.lang.Object> arguments)

Description copied from interface: TableFunction

Returns the row type of the table yielded by this function when applied to given arguments. Only literal arguments are passed, non-literal are replaced with default values (null, 0, false, etc).

Specified by:

getElementType in interface TableFunction

Parameters:

arguments - arguments of a function call (only literal arguments are passed, nulls for non-literal ones)

Returns:

element type of the table (e.g. Object[].class)

getParameters

public java.util.List<FunctionParameter> getParameters()

Description copied from interface: Function

Returns the parameters of this function.

Specified by:

getParameters in interface Function

Returns:

Parameters; never null

getCompletionHints

public static Enumerable<SqlAdvisorHint2> getCompletionHints(SqlAdvisor advisor,
                                                             java.lang.String sql,
                                                             int pos)

Returns completion hints for a given SQL statement.

Typically this is called from generated code (via IMPLEMENTOR).

Parameters:

advisor - Advisor to produce completion hints

sql - SQL to complete

pos - Cursor position in SQL

Returns:

the table that contains completion hints for a given SQL statement