org.eigenbase.sql.type
Class ObjectSqlType

java.lang.Object
  org.eigenbase.reltype.RelDataTypeImpl
      org.eigenbase.sql.type.AbstractSqlType
          org.eigenbase.sql.type.ObjectSqlType

All Implemented Interfaces:

Serializable, Cloneable, RelDataType, RelDataTypeFamily

public class ObjectSqlType
extends AbstractSqlType

ObjectSqlType represents an SQL structured user-defined type.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/sql/type/ObjectSqlType.java#11 $

Author:

John V. Sichi

See Also:

Serialized Form

Field Summary

private RelDataTypeComparability	comparability
private RelDataTypeFamily	family
private SqlIdentifier	sqlIdentifier

Fields inherited from class org.eigenbase.sql.type.AbstractSqlType

isNullable, typeName

Fields inherited from class org.eigenbase.reltype.RelDataTypeImpl

digest, fieldList, fields

Constructor Summary

ObjectSqlType(SqlTypeName typeName, SqlIdentifier sqlIdentifier, boolean nullable, RelDataTypeField[] fields, RelDataTypeComparability comparability)
Constructs an object type.

Method Summary

protected void	generateTypeString(StringBuilder sb, boolean withDetail) Generates a string representation of this type.
RelDataTypeComparability	getComparability()
RelDataTypeFamily	getFamily() Gets a canonical object representing the family of this type.
SqlIdentifier	getSqlIdentifier() Gets the SqlIdentifier associated with this type.
void	setFamily(RelDataTypeFamily family)

Methods inherited from class org.eigenbase.sql.type.AbstractSqlType

getPrecedenceList, getSqlTypeName, isNullable

Methods inherited from class org.eigenbase.reltype.RelDataTypeImpl

computeDigest, equals, getCharset, getCollation, getComponentType, getField, getFieldCount, getFieldList, getFieldOrdinal, getFields, getFullTypeString, getIntervalQualifier, getPrecision, getScale, hashCode, isStruct, toString

Methods inherited from class java.lang.Object

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

Field Detail

sqlIdentifier

private final SqlIdentifier sqlIdentifier

comparability

private final RelDataTypeComparability comparability

family

private RelDataTypeFamily family

Constructor Detail

ObjectSqlType

public ObjectSqlType(SqlTypeName typeName,
                     SqlIdentifier sqlIdentifier,
                     boolean nullable,
                     RelDataTypeField[] fields,
                     RelDataTypeComparability comparability)

Constructs an object type. This should only be called from a factory method.

Parameters:

typeName - SqlTypeName for this type (either Distinct or Structured)

sqlIdentifier - identifier for this type

nullable - whether type accepts nulls

fields - object attribute definitions

Method Detail

setFamily

public void setFamily(RelDataTypeFamily family)

getComparability

public RelDataTypeComparability getComparability()

Specified by:

getComparability in interface RelDataType

Overrides:

getComparability in class RelDataTypeImpl

Returns:

the category of comparison operators which make sense when applied to values of this type

getSqlIdentifier

public SqlIdentifier getSqlIdentifier()

Description copied from interface: RelDataType

Gets the SqlIdentifier associated with this type. For a predefined type, this is a simple identifier based on RelDataType.getSqlTypeName(). For a user-defined type, this is a compound identifier which uniquely names the type.

Specified by:

getSqlIdentifier in interface RelDataType

Overrides:

getSqlIdentifier in class RelDataTypeImpl

Returns:

SqlIdentifier, or null if this is not an SQL type

getFamily

public RelDataTypeFamily getFamily()

Description copied from interface: RelDataType

Gets a canonical object representing the family of this type. Two values can be compared if and only if their types are in the same family.

Specified by:

getFamily in interface RelDataType

Overrides:

getFamily in class AbstractSqlType

Returns:

canonical object representing type family

generateTypeString

protected void generateTypeString(StringBuilder sb,
                                  boolean withDetail)

Description copied from class: RelDataTypeImpl

Generates a string representation of this type.

Specified by:

generateTypeString in class RelDataTypeImpl

Parameters:

sb - StringBuffer into which to generate the string

withDetail - when true, all detail information needed to compute a unique digest (and return from getFullTypeString) should be included;