net.sf.saffron.core
Class SaffronTypeFactoryImpl.TypeImpl

java.lang.Object
  |
  +--net.sf.saffron.core.SaffronTypeFactoryImpl.TypeImpl

All Implemented Interfaces:

SaffronType

Direct Known Subclasses:

OJTypeFactoryImpl.OJScalarType, SaffronTypeFactoryImpl.CrossType, SaffronTypeFactoryImpl.JavaType, SaffronTypeFactoryImpl.RecordType

Enclosing class:

SaffronTypeFactoryImpl

protected abstract class SaffronTypeFactoryImpl.TypeImpl

extends Object

implements SaffronType

Abstract implementation for SaffronType. Useful if the type contains a set of fields.

Identity is based upon the digest field, which each derived class should set during construction.

Field Summary

protected String	digest
protected SaffronField[]	fields

Constructor Summary

protected

SaffronTypeFactoryImpl.TypeImpl(SaffronField[] fields)

Method Summary

protected abstract String	computeDigest()
boolean	equals(Object obj)
boolean	equalsSansNullability(SaffronType type) Whether this type is identical to another, save for differences in nullability.
void	format(Object value, PrintWriter pw) Prints a value of this type.
SaffronType	getArrayType() Returns an array type with this type as the component.
SaffronType	getComponentType() Returns the component type if type is a collection, otherwise null.
SaffronTypeFactory	getFactory()
SaffronField	getField(String fieldName)
int	getFieldCount() Returns the number of columns.
int	getFieldOrdinal(String fieldName)
SaffronField[]	getFields() Returns the columns.
SaffronType[]	getJoinTypes() Returns the component types of a join type.
int	hashCode()
boolean	isJoin() Whether the type represents a cartesian product of regular types.
boolean	isProject()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

fields

protected final SaffronField[] fields

digest

protected String digest

Constructor Detail

SaffronTypeFactoryImpl.TypeImpl

protected SaffronTypeFactoryImpl.TypeImpl(SaffronField[] fields)

Method Detail

getFactory

public SaffronTypeFactory getFactory()

Specified by:

getFactory in interface SaffronType

getField

public SaffronField getField(String fieldName)

Specified by:

getField in interface SaffronType

getFieldCount

public int getFieldCount()

Description copied from interface: SaffronType

Returns the number of columns.

Specified by:

getFieldCount in interface SaffronType

getFieldOrdinal

public int getFieldOrdinal(String fieldName)

Specified by:

getFieldOrdinal in interface SaffronType

getFields

public SaffronField[] getFields()

Description copied from interface: SaffronType

Returns the columns.

Specified by:

getFields in interface SaffronType

getComponentType

public SaffronType getComponentType()

Description copied from interface: SaffronType

Returns the component type if type is a collection, otherwise null.

Specified by:

getComponentType in interface SaffronType

getArrayType

public SaffronType getArrayType()

Description copied from interface: SaffronType

Returns an array type with this type as the component.

Specified by:

getArrayType in interface SaffronType

isJoin

public boolean isJoin()

Description copied from interface: SaffronType

Whether the type represents a cartesian product of regular types.

Specified by:

isJoin in interface SaffronType

getJoinTypes

public SaffronType[] getJoinTypes()

Description copied from interface: SaffronType

Returns the component types of a join type.

Specified by:

getJoinTypes in interface SaffronType

isProject

public boolean isProject()

Specified by:

isProject in interface SaffronType

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

computeDigest

protected abstract String computeDigest()

equalsSansNullability

public boolean equalsSansNullability(SaffronType type)

Description copied from interface: SaffronType

Whether this type is identical to another, save for differences in nullability.

Specified by:

equalsSansNullability in interface SaffronType

format

public void format(Object value,
                   PrintWriter pw)

Description copied from interface: SaffronType

Prints a value of this type.

Specified by:

format in interface SaffronType