org.apache.calcite.sql.type

Class SqlTypeExplicitPrecedenceList

java.lang.Object

org.apache.calcite.sql.type.SqlTypeExplicitPrecedenceList

All Implemented Interfaces:

RelDataTypePrecedenceList

public class SqlTypeExplicitPrecedenceList
extends Object
implements RelDataTypePrecedenceList

SqlTypeExplicitPrecedenceList implements the RelDataTypePrecedenceList interface via an explicit list of SqlTypeName entries.

Field Summary

Fields

Modifier and Type	Field and Description
private static List<SqlTypeName>	COMPACT_NUMERIC_TYPES
private static List<SqlTypeName>	NUMERIC_TYPES
private static Map<SqlTypeName,SqlTypeExplicitPrecedenceList>	TYPE_NAME_TO_PRECEDENCE_LIST Map from SqlTypeName to corresponding precedence list.
private List<SqlTypeName>	typeNames

Constructor Summary

Constructors

Constructor and Description
SqlTypeExplicitPrecedenceList(Iterable<SqlTypeName> typeNames)

Method Summary

Modifier and Type	Method and Description
int	compareTypePrecedence(RelDataType type1, RelDataType type2) Compares the precedence of two types.
boolean	containsType(RelDataType type) Determines whether a type appears in this precedence list.
(package private) static RelDataTypePrecedenceList	getListForType(RelDataType type)
private static int	getListPosition(SqlTypeName type, List<SqlTypeName> list)
private static SqlTypeExplicitPrecedenceList	list(Iterable<SqlTypeName> typeNames)
private static SqlTypeExplicitPrecedenceList	list(SqlTypeName... typeNames)
private static SqlTypeExplicitPrecedenceList	numeric(SqlTypeName typeName)

Methods inherited from class java.lang.Object

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

Field Detail

NUMERIC_TYPES

private static final List<SqlTypeName> NUMERIC_TYPES

COMPACT_NUMERIC_TYPES

private static final List<SqlTypeName> COMPACT_NUMERIC_TYPES

TYPE_NAME_TO_PRECEDENCE_LIST

private static final Map<SqlTypeName,SqlTypeExplicitPrecedenceList> TYPE_NAME_TO_PRECEDENCE_LIST

Map from SqlTypeName to corresponding precedence list.

See Also:

SQL:2003 Part 2 Section 9.5

typeNames

private final List<SqlTypeName> typeNames

Constructor Detail

SqlTypeExplicitPrecedenceList

public SqlTypeExplicitPrecedenceList(Iterable<SqlTypeName> typeNames)

Method Detail

list

private static SqlTypeExplicitPrecedenceList list(SqlTypeName... typeNames)

list

private static SqlTypeExplicitPrecedenceList list(Iterable<SqlTypeName> typeNames)

numeric

private static SqlTypeExplicitPrecedenceList numeric(SqlTypeName typeName)

containsType

public boolean containsType(RelDataType type)

Description copied from interface: RelDataTypePrecedenceList

Determines whether a type appears in this precedence list.

Specified by:

containsType in interface RelDataTypePrecedenceList

Parameters:

type - type to check

Returns:

true iff this list contains type

compareTypePrecedence

public int compareTypePrecedence(RelDataType type1,
                                 RelDataType type2)

Description copied from interface: RelDataTypePrecedenceList

Compares the precedence of two types.

The list must contain both types.

Specified by:

compareTypePrecedence in interface RelDataTypePrecedenceList

Parameters:

type1 - first type to compare

type2 - second type to compare

Returns:

positive if type1 has higher precedence; negative if type2 has higher precedence; 0 if types have equal precedence

getListPosition

private static int getListPosition(SqlTypeName type,
                                   List<SqlTypeName> list)

getListForType

static RelDataTypePrecedenceList getListForType(RelDataType type)