org.apache.calcite.sql.type

Class SqlTypeAssignmentRules

java.lang.Object

org.apache.calcite.sql.type.SqlTypeAssignmentRules

public class SqlTypeAssignmentRules
extends Object

Rules that determine whether a type is assignable from another type.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	SqlTypeAssignmentRules.Builder Keeps state while maps are building build.

Field Summary

Fields

Modifier and Type	Field and Description
private static SqlTypeAssignmentRules	COERCE_INSTANCE
private static SqlTypeAssignmentRules	INSTANCE
private Map<SqlTypeName,com.google.common.collect.ImmutableSet<SqlTypeName>>	map

Constructor Summary

Constructors

Modifier	Constructor and Description
private	SqlTypeAssignmentRules(Map<SqlTypeName,com.google.common.collect.ImmutableSet<SqlTypeName>> map)

Method Summary

Modifier and Type	Method and Description
boolean	canCastFrom(SqlTypeName to, SqlTypeName from) Returns whether it is valid to cast a value of from type from to type to.
boolean	canCastFrom(SqlTypeName to, SqlTypeName from, boolean coerce) Deprecated.
static SqlTypeAssignmentRules	instance() Returns an instance that does not coerce.
static SqlTypeAssignmentRules	instance(boolean coerce) Returns an instance.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

private static final SqlTypeAssignmentRules INSTANCE

COERCE_INSTANCE

private static final SqlTypeAssignmentRules COERCE_INSTANCE

map

private final Map<SqlTypeName,com.google.common.collect.ImmutableSet<SqlTypeName>> map

Constructor Detail

SqlTypeAssignmentRules

private SqlTypeAssignmentRules(Map<SqlTypeName,com.google.common.collect.ImmutableSet<SqlTypeName>> map)

Method Detail

instance

public static SqlTypeAssignmentRules instance()

Returns an instance that does not coerce.

instance

public static SqlTypeAssignmentRules instance(boolean coerce)

Returns an instance.

canCastFrom

@Deprecated
public boolean canCastFrom(SqlTypeName to,
                                       SqlTypeName from,
                                       boolean coerce)

Deprecated.

canCastFrom

public boolean canCastFrom(SqlTypeName to,
                           SqlTypeName from)

Returns whether it is valid to cast a value of from type from to type to.