org.gvsig.app.eventtheme.dal.feature

Class EventThemeTransform

java.lang.Object

org.gvsig.fmap.dal.feature.AbstractFeatureStoreTransform

org.gvsig.app.eventtheme.dal.feature.EventThemeTransform

All Implemented Interfaces:

Cloneable, FeatureStoreTransform, Persistent

public class EventThemeTransform
extends AbstractFeatureStoreTransform

This class implements a transformation for a events theme. The original DataStore have to have a couple of attributes, one with the X coordinate and the second one with the Y coordinate. The result of the transformation is a DataStore that has a new geometric attribute and its value is a point with the coordinates specified in the original DataStore.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_INI_FEATURES Max number of features used for initial estimation of extent.
static String	PERSISTENCE_DEFINITION_NAME

Fields inherited from class org.gvsig.fmap.dal.feature.AbstractFeatureStoreTransform

ABSTRACT_FEATURESTORE_DYNCLASS_NAME, descripcion, METADATA_DEFINITION_NAME, name

Constructor Summary

Constructors

Constructor and Description
EventThemeTransform()

Method Summary

Modifier and Type	Method and Description
void	applyTransform(Feature source, EditableFeature target) Applies this transform between two features, copying the source data to the target feature.
Object	getDynValue(String name)
FeatureType	getSourceFeatureTypeFrom(FeatureType targetFeatureType) Returns the original store FeatureType that replaces targetFeatureType of this FeatureStoreTransform's
boolean	hasDynValue(String name)
boolean	isTransformsOriginalValues() Retruns true if this make changes of any attributes values or false if only FeatureType definitions is changed.
void	loadFromState(PersistentState state) Set the state of the object from the state passed as parameter.
static void	registerPersistent()
void	saveToState(PersistentState state) Saves the internal state of the object on the provided PersistentState object.
void	setEnvelope(Envelope env)
void	setUp() This method must perform the necessary actions to set up the transformation.
void	setValues(FeatureStore store, String geometryFieldName, String xFieldName, String yFieldName, IProjection projection) This method initializes the transformation, sets the name of the parameters and sets the value of the FeatureType returned by the transformation.

Methods inherited from class org.gvsig.fmap.dal.feature.AbstractFeatureStoreTransform

clone, getDefaultFeatureType, getDescription, getFeatureStore, getFeatureTypes, getName, getSourceMetadata, setDynValue, setFeatureStore, setFeatureTypes, setSourceMetadata

Methods inherited from class java.lang.Object

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

Field Detail

PERSISTENCE_DEFINITION_NAME

public static final String PERSISTENCE_DEFINITION_NAME

See Also:

Constant Field Values

MAX_INI_FEATURES

public static int MAX_INI_FEATURES

Max number of features used for initial estimation of extent. Many other features will be ignored simply with "iter.next()"

Constructor Detail

EventThemeTransform

public EventThemeTransform()

Method Detail

setValues

public void setValues(FeatureStore store,
                      String geometryFieldName,
                      String xFieldName,
                      String yFieldName,
                      IProjection projection)
               throws DataException

This method initializes the transformation, sets the name of the parameters and sets the value of the FeatureType returned by the transformation.

Parameters:

store - The original store.

geometryFieldName - The field that contains the geometric attribute.

xFieldName - The field that contains the X coordinate.

yFieldName - The field that contains the Y coordinate.

projection -

Throws:

DataException

setUp

public void setUp()
           throws Exception

Description copied from interface: FeatureStoreTransform

This method must perform the necessary actions to set up the transformation. It is called automatically when adding the transformation to the store and when the store is retrieved from the persistence.

Throws:

Exception

setEnvelope

public void setEnvelope(Envelope env)

applyTransform

public void applyTransform(Feature source,
                           EditableFeature target)
                    throws DataException

Description copied from interface: FeatureStoreTransform

Applies this transform between two features, copying the source data to the target feature.

Parameters:

source - feature whose data will be used as source

target - feature in which the source data will be copied

Throws:

DataException

getSourceFeatureTypeFrom

public FeatureType getSourceFeatureTypeFrom(FeatureType targetFeatureType)

Description copied from interface: FeatureStoreTransform

Returns the original store FeatureType that replaces targetFeatureType of this FeatureStoreTransform's

Returns:

source FeatureType

isTransformsOriginalValues

public boolean isTransformsOriginalValues()

Description copied from interface: FeatureStoreTransform

Retruns true if this make changes of any attributes values or false if only FeatureType definitions is changed.

Specified by:

isTransformsOriginalValues in interface FeatureStoreTransform

Overrides:

isTransformsOriginalValues in class AbstractFeatureStoreTransform

Returns:

See Also:

FeatureStoreTransforms#isTransformsOriginalValues()}

registerPersistent

public static void registerPersistent()

saveToState

public void saveToState(PersistentState state)
                 throws PersistenceException

Description copied from interface: Persistent

Saves the internal state of the object on the provided PersistentState object.

Specified by:

saveToState in interface Persistent

Overrides:

saveToState in class AbstractFeatureStoreTransform

Throws:

PersistenceException

loadFromState

public void loadFromState(PersistentState state)
                   throws PersistenceException

Description copied from interface: Persistent

Set the state of the object from the state passed as parameter.

Specified by:

loadFromState in interface Persistent

Overrides:

loadFromState in class AbstractFeatureStoreTransform

Throws:

PersistenceException

getDynValue

public Object getDynValue(String name)
                   throws DynFieldNotFoundException

Specified by:

getDynValue in interface FeatureStoreTransform

Overrides:

getDynValue in class AbstractFeatureStoreTransform

Throws:

DynFieldNotFoundException

hasDynValue

public boolean hasDynValue(String name)

Specified by:

hasDynValue in interface FeatureStoreTransform

Overrides:

hasDynValue in class AbstractFeatureStoreTransform