org.geotools.feature

Class TypeBuilder

Object

TypeBuilder

public class TypeBuilder
extends Object

Makes building types easier by maintaining state.

For reference the builder captures the following state:

State		Property				Complex	Feature		Builder
scope	state	descriptor()	attribute()	geometry()	association()	complex()	feature()	collection()	init()	reset()	clear()
naming	namespace	x	x	x	x	x	x	x	x
	name	x	x	x	x	x	x	x	x	x
	isIdentified		x	x	x	x	x	x	x
	description		x	x	x	x	x	x	x	x
type	isAbstract		x	x	x	x	x	x	x
	superType		x	x	x	x	x	x	x
	restriction*		x	x	x	x	x	x	x
association	referenceType				x				x
descriptor	minOccurs	x							x		x
	maxOccurs	x							x		x
	isNillable	x							x		x
	propertyType	x							x
atomic	binding		x	x					x
complex	properties*					x	x	x	x	x
spatial	crs			x			x	x	x
	defaultGeom						x	x	x	x
collection	members*							x	x	x

* collection implementation may be specified

There are five state control methods:

• init( PropertyType ) - completly load settings from type
• init( PropertyDescriptor ) - completly load settings from descriptor
• init() - completly replace settings with builder defaults
  • reset() - called after a type creation methods to reset common type settings
  • clear() - called after an descriptor create method (or add methods) to clear common descriptor settings

For examples of using this class please see the following type creation methods:

• attribute()
• geometry()
• association()
• complex()
• feature()
• collection()

Author:

Justin Deoliveira, Jody Garnett

Field Summary

Fields

Modifier and Type	Field and Description
protected Collection<PropertyDescriptor>	members Members of a collection()

Constructor Summary

Constructors

Constructor and Description
TypeBuilder(FeatureTypeFactory factory)

Method Summary

Modifier and Type	Method and Description
TypeBuilder	add(PropertyDescriptor descriptor) Add provided descriptor to the type to be created.
void	addAttribute(Name name, AttributeType type)
void	addAttribute(Name name, Class binding)
void	addAttribute(String name, AttributeType type)
void	addAttribute(String name, Class binding)
void	addAttribute(String name, String namespaceURI, AttributeType type)
void	addAttribute(String uri, String name, Class binding)
void	addBinding(Class binding, AttributeType type) Used to provide a specific type for provided binding.
void	addMemberType(Name name, AssociationType memberType) Creates a association descriptor and adds to collection members.
void	addMemberType(String name, AssociationType memberType) Creates a association descriptor and adds to collection members.
void	addMemberType(String namespaceURI, String name, AssociationType memberType) Creates a association descriptor and adds to collection members.
void	addRestriction(Filter restriction)
AssociationType	association() Create AssociationType
TypeBuilder	association(Name name, AssociationType type)
TypeBuilder	association(String name, AssociationType type)
TypeBuilder	association(String namespaceURI, String name, AssociationType type)
AssociationDescriptor	associationDescriptor() Create an AssociationDesctiptor, define relationships between ComplexAttribtues (in particular FeatureCollection to members).
AttributeType	attribute() Creation method for AttributeType.
TypeBuilder	attribute(Name name, AttributeType type)
TypeBuilder	attribute(Name name, Class binding)
TypeBuilder	attribute(String name, AttributeType type)
TypeBuilder	attribute(String name, Class binding) Add a descriptor with a provided name, with the binding
TypeBuilder	attribute(String name, String namespaceURI, AttributeType type)
TypeBuilder	attribute(String namespaceURI, String name, Class binding) Add a descriptor with a provided name, with the binding
AttributeDescriptor	attributeDescriptor() Create an AttributeDesctiptor, useful for fine grain control.
TypeBuilder	bind(Class<?> binding)
protected Map<Class<?>,AttributeType>	bindings() Accessor for bindings.
TypeBuilder	cardinality(int min, int max)
void	clear()
ComplexType	complex() Create a complex attribute, made up of other attributes.
static boolean	contains(Collection collection, PropertyDescriptor descriptor)
protected Name	createName(String ns, String local) Template method for creating an attribute name.
protected List<Filter>	createRestrictionSet() Template method to enable subclasses to customize the set implementation used for restrictions.
protected Name	createTypeName(String ns, String local) Template method for creating a type name.
TypeBuilder	crs(CoordinateReferenceSystem crs)
TypeBuilder	crs(String SRS) Uses CRS utility class with buildres TypeFactory.getCRSFactory to look up a CoordinateReferenceSystem based on the provied srs.
protected GeometryDescriptor	defaultGeometry() Convenience method for getting the descriptor of the default geometry type.
TypeBuilder	defaultGeometry(String name)
FeatureType	feature() Create feature.
GeometryType	geometry() Create GeometryType.
AssociationType	getAssociationSuper()
Class<?>	getBinding()
AttributeType	getBinding(Class binding) Used to lookup AttributeType for provided binding.
CoordinateReferenceSystem	getCRS()
Name	getDefaultGeometry()
InternationalString	getDescription()
int	getMaxOccurs()
Collection	getMembers() Access to members used by builder.
int	getMinOccurs()
String	getName()
String	getNamespaceURI()
Collection<PropertyDescriptor>	getProperties() Access to properties used by builder.
PropertyType	getPropertyType()
AttributeType	getReferenceType()
List<Filter>	getRestrictions()
AttributeType	getSuper()
FeatureTypeFactory	getTypeFactory()
void	init() Initialize this builder.
void	init(PropertyDescriptor descriptor)
void	init(PropertyType type)
boolean	isAbstract()
boolean	isIdentified()
boolean	isNillable()
void	load(Schema schema) Load the indicated schema to map Java class to your Type System.
TypeBuilder	member(AssociationDescriptor memberOf)
TypeBuilder	member(Name name, AssociationType type) Creates a association descriptor and adds to collection members.
TypeBuilder	member(String name, AssociationType type) Creates a association descriptor and adds to collection members.
protected Collection<PropertyDescriptor>	members() Grab member collection as an argument to factory method.
TypeBuilder	name(String name)
protected <T> Collection<T>	newCollection() Template method to enable subclasses to customize the collection implementation used by "default".
protected <T> Collection<T>	newCollection(Collection<T> origional) Provides an empty copy of the provided origional collection.
TypeBuilder	nillable(boolean isNillable)
protected Collection<PropertyDescriptor>	properties() Grab property collection as an argument to factory method.
TypeBuilder	property(PropertyType type) Used as a the target for attributeDescriptor or associatioDescriptor().
TypeBuilder	referenceType(AttributeType reference)
void	reset() Reset is called after creation a "new" type.
protected List<Filter>	restrictions() Accessor for restructions which does the null check and creation if necessary.
void	setAbstract(boolean isAbstract)
void	setBinding(Class<?> binding)
void	setCRS(CoordinateReferenceSystem crs)
void	setDefaultGeometry(Name name)
void	setDefaultGeometry(String name)
void	setDefaultGeometry(String name, String namespaceURI)
void	setDescription(InternationalString description)
void	setIdentified(boolean isIdentified)
void	setMaxOccurs(int maxOccurs)
void	setMembers(Collection<PropertyDescriptor> members) Provide collection class used organize collection members
void	setMinOccurs(int minOccurs)
void	setName(String name)
void	setNamespaceURI(String namespace)
void	setNillable(boolean isNillable)
void	setProperties(Collection<PropertyDescriptor> properties) Allow for user supplied collection implementaion used for properties.
void	setPropertyType(PropertyType type)
void	setReferenceType(AttributeType reference) Allows you to indicate the reference type to be used with Association to be created.
void	setRestrictions(List<Filter> restrictions)
void	setSuper(PropertyType superType)
void	setTypeFactory(FeatureTypeFactory factory)
protected Name	typeName() Accessor which returns type banme as follows: If typeName has been set, its value is returned.

Methods inherited from class Object

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

Field Detail

members

protected Collection<PropertyDescriptor> members

Members of a collection()

Constructor Detail

TypeBuilder

public TypeBuilder(FeatureTypeFactory factory)

Method Detail

getTypeFactory

public FeatureTypeFactory getTypeFactory()

setTypeFactory

public void setTypeFactory(FeatureTypeFactory factory)

reset

public void reset()

Reset is called after creation a "new" type.

The following information is reset:

• name
• properties: structural properties (attributes and associations)
• members: collection members
• default geometry
• minOccurs
• maxOccurs

Note: type type of collection class is not reset, a new instanceof the existing collection class is used.

clear

public void clear()

init

public void init()

Initialize this builder.

This method cleans the builder of all contained state.

See Also:

reset

init

public void init(PropertyDescriptor descriptor)

init

public void init(PropertyType type)

attribute

public AttributeType attribute()

Creation method for AttributeType.

Example:

 AttributeType TEXT = builder.name("Text").bind(String.class).attribute();
 

Example:

 builder.setName("Interger");
 builder.setBinding(Integer.class);
 AttributeType INTEGER = builder.attribute();
 

Returns:

AttributeType created

association

public AssociationType association()

Create AssociationType

geometry

public GeometryType geometry()

Create GeometryType.

SFSQL Example JTS LineString.class:

 AttributeType ROUTE = builder.name("Route").bind(LineString.class).crs("EPSG:4326").geometry();
 

Shape Example Java Rectangle2D:

 builder.setName("Quad");
 builder.setBinding(Rectangle2D.class);
 builder.setCRS(crs);
 AttributeType QUAD = builder.geometry();
 

Use of GeoAPI Geometry interfaces is encouraged as implementations are made avaiable.

complex

public ComplexType complex()

Create a complex attribute, made up of other attributes.

Example using Set:

 builder.setName("FullName");
 builder.setProperties(new HasSet());
 builder.addAttribute("first", TEXT);
 builder.setMinOccurs(0);
 builder.setMaxOccurs(Integer.MAX_VALUE);
 builder.addAttribute("middle", TEXT);
 builder.addAttribute("last", TEXT);
 ComplexType FULLNAME = builder.complex();
 

Example using chaining:

 ComplexType FULLNAME = builder.name("FullName").attribute("first", TEXT).cardinality(0,
         Integer.MAX_VALUE).attribute("middle", TEXT).attribute("last", TEXT).complex();
 

Returns:

ComplexType

attributeDescriptor

public AttributeDescriptor attributeDescriptor()

Create an AttributeDesctiptor, useful for fine grain control.

Example:

 AttributeDescriptor name = build.name("name").property(TEXT).cardinality(1, 5)
         .attributeDescriptor();
 

Returns:

AttributeDescriptor used to define sturcture of ComplexAttribtues

associationDescriptor

public AssociationDescriptor associationDescriptor()

Create an AssociationDesctiptor, define relationships between ComplexAttribtues (in particular FeatureCollection to members).

Example:

 AttributeDescriptor contains = build.name("contains").property(ROAD).nillable(false).cardinality(0,
         Interger.MAX_VALUE).associationDescriptor();
 

Returns:

AttributeDescriptor used to define sturcture of ComplexAttribtues

feature

public FeatureType feature()

Create feature.

Returns:

FeatureType

setNamespaceURI

public void setNamespaceURI(String namespace)

getNamespaceURI

public String getNamespaceURI()

setName

public void setName(String name)

name

public TypeBuilder name(String name)

getName

public String getName()

setBinding

public void setBinding(Class<?> binding)

bind

public TypeBuilder bind(Class<?> binding)

getPropertyType

public PropertyType getPropertyType()

setPropertyType

public void setPropertyType(PropertyType type)

property

public TypeBuilder property(PropertyType type)

Used as a the target for attributeDescriptor or associatioDescriptor().

Returns:

TypeBuilder (for chaining).

getBinding

public Class<?> getBinding()

getDescription

public InternationalString getDescription()

setDescription

public void setDescription(InternationalString description)

setAbstract

public void setAbstract(boolean isAbstract)

isAbstract

public boolean isAbstract()

nillable

public TypeBuilder nillable(boolean isNillable)

setNillable

public void setNillable(boolean isNillable)

isNillable

public boolean isNillable()

setIdentified

public void setIdentified(boolean isIdentified)

isIdentified

public boolean isIdentified()

setSuper

public void setSuper(PropertyType superType)

getSuper

public AttributeType getSuper()

getAssociationSuper

public AssociationType getAssociationSuper()

addRestriction

public void addRestriction(Filter restriction)

getRestrictions

public List<Filter> getRestrictions()

setRestrictions

public void setRestrictions(List<Filter> restrictions)

restrictions

protected List<Filter> restrictions()

Accessor for restructions which does the null check and creation if necessary.

createRestrictionSet

protected List<Filter> createRestrictionSet()

Template method to enable subclasses to customize the set implementation used for restrictions.

Returns:

A HashSet.

typeName

protected Name typeName()

Accessor which returns type banme as follows:

1. If typeName has been set, its value is returned.
2. If name has been set, it + namespaceURI are returned.

createTypeName

protected Name createTypeName(String ns,
                              String local)

Template method for creating a type name.

Returns:

org.geotools.feature.iso.Types#typeName(String, String)

getBinding

public AttributeType getBinding(Class binding)

Used to lookup AttributeType for provided binding.

Returns:

AttributeType

Throws:

IllegalArgumentExcception - if class is not bound to a prototype

addBinding

public void addBinding(Class binding,
                       AttributeType type)

Used to provide a specific type for provided binding.

You can use this method to map the AttributeType used when addAttribute( String name, Class binding ) is called.

load

public void load(Schema schema)

Load the indicated schema to map Java class to your Type System. (please us a profile to prevent binding conflicts).

getMinOccurs

public int getMinOccurs()

cardinality

public TypeBuilder cardinality(int min,
                               int max)

setMinOccurs

public void setMinOccurs(int minOccurs)

getMaxOccurs

public int getMaxOccurs()

setMaxOccurs

public void setMaxOccurs(int maxOccurs)

attribute

public TypeBuilder attribute(String name,
                             Class binding)

Add a descriptor with a provided name, with the binding

Parameters:

name - Name of descriptor (combined with uri for a Name)

binding - Used to look up a bound AttributeType

Returns:

this builder for additional chaining

attribute

public TypeBuilder attribute(String namespaceURI,
                             String name,
                             Class binding)

Add a descriptor with a provided name, with the binding

Parameters:

name - Name of descriptor (combined with uri for a Name)

binding - Used to look up a bound AttributeType

Returns:

this builder for additional chaining

attribute

public TypeBuilder attribute(Name name,
                             Class binding)

attribute

public TypeBuilder attribute(String name,
                             String namespaceURI,
                             AttributeType type)

attribute

public TypeBuilder attribute(String name,
                             AttributeType type)

attribute

public TypeBuilder attribute(Name name,
                             AttributeType type)

addAttribute

public void addAttribute(String name,
                         Class binding)

addAttribute

public void addAttribute(String uri,
                         String name,
                         Class binding)

addAttribute

public void addAttribute(Name name,
                         Class binding)

addAttribute

public void addAttribute(String name,
                         AttributeType type)

addAttribute

public void addAttribute(String name,
                         String namespaceURI,
                         AttributeType type)

addAttribute

public void addAttribute(Name name,
                         AttributeType type)

setReferenceType

public void setReferenceType(AttributeType reference)

Allows you to indicate the reference type to be used with Association to be created.

referenceType

public TypeBuilder referenceType(AttributeType reference)

getReferenceType

public AttributeType getReferenceType()

association

public TypeBuilder association(String name,
                               AssociationType type)

association

public TypeBuilder association(String namespaceURI,
                               String name,
                               AssociationType type)

association

public TypeBuilder association(Name name,
                               AssociationType type)

add

public TypeBuilder add(PropertyDescriptor descriptor)

Add provided descriptor to the type to be created.

Please note that you may not have two types with the same name, depending on the factory being used the order of the structural content may be signficant - this builder will preserve order although the factory may or may not make use of this fact.

contains

public static boolean contains(Collection collection,
                               PropertyDescriptor descriptor)

getProperties

public Collection<PropertyDescriptor> getProperties()

Access to properties used by builder.

You can use this method to perform collection opperations before construction. This is most useful when initializing the builder with a known type, performing modifications, and then creating a derrived type.

setProperties

public void setProperties(Collection<PropertyDescriptor> properties)

Allow for user supplied collection implementaion used for properties.

Examples of useful property collections:

• List - structured properties maintained in order
• Set - order of structured properties insignificant
• etc...

The collection class used here should be matched by content described by this type. Explicitly a FeatureType with getProperties() instanceof Set indicates that Features of that FeatureType should maintain a Set of properties where order is not significant.

Parameters:

properties - Collection implementation used to organize properties

newCollection

protected <T> Collection<T> newCollection()

Template method to enable subclasses to customize the collection implementation used by "default".

Considered moving this to the type interface but it would be in appropriate as the user may need to specifiy different collections for seperate types in the same schema.

Returns:

Collection (subclass may override)

newCollection

protected <T> Collection<T> newCollection(Collection<T> origional)

Provides an empty copy of the provided origional collection.

This method is used by reset for the following goals:

• use the user supplied collection directly by the TypeFactory,
• remember the user supplied collection type for subsequent builder use

This allows a user to indicate that properties are stored in a "LinkedList" once.

Parameters:

origional - Origional collection

Returns:

New instance of the originoal Collection

properties

protected Collection<PropertyDescriptor> properties()

Grab property collection as an argument to factory method.

This may return a copy as needed, since most calls to a factory method end up with a reset this seems not be needed at present.

bindings

protected Map<Class<?>,AttributeType> bindings()

Accessor for bindings.

createName

protected Name createName(String ns,
                          String local)

Template method for creating an attribute name.

Returns:

org.geotools.feature.Types#typeName(String, String)

setDefaultGeometry

public void setDefaultGeometry(String name)

setDefaultGeometry

public void setDefaultGeometry(String name,
                               String namespaceURI)

setDefaultGeometry

public void setDefaultGeometry(Name name)

defaultGeometry

public TypeBuilder defaultGeometry(String name)

getDefaultGeometry

public Name getDefaultGeometry()

defaultGeometry

protected GeometryDescriptor defaultGeometry()

Convenience method for getting the descriptor of the default geometry type. This method will first try to look up the supplied defaultGeom property, if it cant find, it will try to locate any added geometry.

setCRS

public void setCRS(CoordinateReferenceSystem crs)

crs

public TypeBuilder crs(CoordinateReferenceSystem crs)

crs

public TypeBuilder crs(String SRS)

Uses CRS utility class with buildres TypeFactory.getCRSFactory to look up a CoordinateReferenceSystem based on the provied srs.

A SpatialReferenceSystem can be one of the following:

• "AUTHORITY:CODE"
• Well Known Text

Returns:

TypeBuilder ready for chaining

Throws:

IllegalArgumentException - When SRS not understood

getCRS

public CoordinateReferenceSystem getCRS()

getMembers

public Collection getMembers()

Access to members used by builder.

You can use this method to perform collection opperations before construction. This is most useful when initializing the builder with a known type, performing modifications, and then creating a derrived type.

setMembers

public void setMembers(Collection<PropertyDescriptor> members)

Provide collection class used organize collection members

members

protected Collection<PropertyDescriptor> members()

Grab member collection as an argument to factory method.

This may return a copy as needed, since most calls to a factory method end up with a reset this seems not be needed at present.

addMemberType

public void addMemberType(String name,
                          AssociationType memberType)

Creates a association descriptor and adds to collection members.

Calls clear to reset cardinality after use.

addMemberType

public void addMemberType(String namespaceURI,
                          String name,
                          AssociationType memberType)

Creates a association descriptor and adds to collection members.

Calls clear to reset cardinality after use.

addMemberType

public void addMemberType(Name name,
                          AssociationType memberType)

Creates a association descriptor and adds to collection members.

Calls clear to reset cardinality after use.

member

public TypeBuilder member(String name,
                          AssociationType type)

Creates a association descriptor and adds to collection members.

Calls clear to reset cardinality after use.

Returns:

TypeBuilder for operation chaining

member

public TypeBuilder member(Name name,
                          AssociationType type)

Creates a association descriptor and adds to collection members.

Calls clear to reset cardinality after use.

Returns:

TypeBuilder for operation chaining

member

public TypeBuilder member(AssociationDescriptor memberOf)