org.geotools.data.joining

Class JoiningNestedAttributeMapping

Object

AttributeMapping

NestedAttributeMapping

JoiningNestedAttributeMapping

public class JoiningNestedAttributeMapping
extends NestedAttributeMapping

Nested attribute mapping used for joining system

Author:

Niels Charlier (Curtin University of Technology)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	JoiningNestedAttributeMapping.Instance Instance that holds temporary data for going through the features, for each 'caller' (any object going through the features) there is one.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<Object,JoiningNestedAttributeMapping.Instance>	instances The instances.

Fields inherited from class NestedAttributeMapping

filterFac, nestedFeatureType, nestedTargetXPath

Fields inherited from class AttributeMapping

sourceExpression, targetXPath

Constructor Summary

Constructors

Constructor and Description
JoiningNestedAttributeMapping(Expression idExpression, Expression parentExpression, XPathUtil.StepList targetXPath, boolean isMultiValued, Map<Name,Expression> clientProperties, Expression sourceElement, XPathUtil.StepList sourcePath, NamespaceSupport namespaces) Constructor

Method Summary

Modifier and Type	Method and Description
void	close(Object caller) Close the instance of this caller.
List<Feature>	getFeatures(Object caller, Object foreignKeyValue, List<Object> idValues, CoordinateReferenceSystem reprojection, Object feature, List<PropertyName> selectedProperties, boolean includeMandatory, int resolveDepth, Integer resolveTimeOut) Get the maching built features that are stored in this mapping using a supplied link value
List<Feature>	getInputFeatures(Object foreignKeyValue, FeatureTypeMapping fMapping) Get matching input features that are stored in this mapping using a supplied link value.
List<Feature>	getInputFeatures(Object caller, Object foreignKeyValue, List<Object> idValues, Object feature, CoordinateReferenceSystem reprojection, List<PropertyName> selectedProperties, boolean includeMandatory) Get matching input features that are stored in this mapping using a supplied link value.
Map<Name,DataAccessMappingFeatureIterator>	getNestedFeatureIterators(Object caller) For testing purposes only: exposes the nested feature iterators to calling code.
DataAccessMappingFeatureIterator	initSourceFeatures(JoiningNestedAttributeMapping.Instance instance, Name featureTypeName, CoordinateReferenceSystem reprojection, List<PropertyName> selectedProperties, boolean includeMandatory, int resolveDepth, Integer resolveTimeOut, Transaction transaction) Initialise a new iterator (for polymorphism, there could be multiple per instance)
void	open(Object caller, Query baseTableQuery, FeatureTypeMapping mapping) Open an instance (cursor) for a specific caller.
void	skip(Object caller, Object foreignKeyValue, List<Object> idValues) If we have decided not to build the parent feature, we need to skip all rows that were returned to build it
protected void	skipFeatures(DataAccessMappingFeatureIterator featureIterator, Expression nestedSourceExpression, Object foreignKeyValue, List<Object> idValues)

Methods inherited from class NestedAttributeMapping

getFeatures, getFeatureTypeMapping, getMapping, getMappingSource, getNamespaces, getNestedFeatureType, isConditional, isNestedAttribute, isSameSource

Methods inherited from class AttributeMapping

encodeIfEmpty, equals, getClientProperties, getIdentifierExpression, getInstanceXpath, getLabel, getParentLabel, getSourceExpression, getSourceIndex, getTargetNodeInstance, getTargetXPath, hashCode, isList, isMultiValued, setEncodeIfEmpty, setIdentifierExpression, setInstanceXpath, setLabel, setList, setParentLabel, toString

Methods inherited from class Object

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

Field Detail

instances

protected Map<Object,JoiningNestedAttributeMapping.Instance> instances

The instances.

Constructor Detail

JoiningNestedAttributeMapping

public JoiningNestedAttributeMapping(Expression idExpression,
                                     Expression parentExpression,
                                     XPathUtil.StepList targetXPath,
                                     boolean isMultiValued,
                                     Map<Name,Expression> clientProperties,
                                     Expression sourceElement,
                                     XPathUtil.StepList sourcePath,
                                     NamespaceSupport namespaces)
                              throws IOException

Constructor

Parameters:

idExpression -

parentExpression -

targetXPath -

isMultiValued -

clientProperties -

sourceElement -

sourcePath -

namespaces -

Throws:

IOException

Method Detail

getInputFeatures

public List<Feature> getInputFeatures(Object foreignKeyValue,
                                      FeatureTypeMapping fMapping)

Description copied from class: NestedAttributeMapping

Get matching input features that are stored in this mapping using a supplied link value.

Overrides:

getInputFeatures in class NestedAttributeMapping

Returns:

The matching input feature

initSourceFeatures

public DataAccessMappingFeatureIterator initSourceFeatures(JoiningNestedAttributeMapping.Instance instance,
                                                           Name featureTypeName,
                                                           CoordinateReferenceSystem reprojection,
                                                           List<PropertyName> selectedProperties,
                                                           boolean includeMandatory,
                                                           int resolveDepth,
                                                           Integer resolveTimeOut,
                                                           Transaction transaction)
                                                    throws IOException

Initialise a new iterator (for polymorphism, there could be multiple per instance)

Parameters:

instance -

featureTypeName -

reprojection -

selectedProperties -

includeMandatory -

Returns:

Throws:

IOException

open

public void open(Object caller,
                 Query baseTableQuery,
                 FeatureTypeMapping mapping)
          throws IOException

Open an instance (cursor) for a specific caller. An instance holds a cursor and any additional information to move through the features.

Parameters:

caller -

baseTableQuery -

Throws:

IOException

close

public void close(Object caller)

Close the instance of this caller.

Parameters:

caller -

getInputFeatures

public List<Feature> getInputFeatures(Object caller,
                                      Object foreignKeyValue,
                                      List<Object> idValues,
                                      Object feature,
                                      CoordinateReferenceSystem reprojection,
                                      List<PropertyName> selectedProperties,
                                      boolean includeMandatory)
                               throws IOException

Get matching input features that are stored in this mapping using a supplied link value.

Overrides:

getInputFeatures in class NestedAttributeMapping

Parameters:

foreignKeyValue -

Returns:

The matching input feature

Throws:

IOException

IOException

getFeatures

public List<Feature> getFeatures(Object caller,
                                 Object foreignKeyValue,
                                 List<Object> idValues,
                                 CoordinateReferenceSystem reprojection,
                                 Object feature,
                                 List<PropertyName> selectedProperties,
                                 boolean includeMandatory,
                                 int resolveDepth,
                                 Integer resolveTimeOut)
                          throws IOException

Get the maching built features that are stored in this mapping using a supplied link value

Overrides:

getFeatures in class NestedAttributeMapping

Parameters:

foreignKeyValue -

reprojection - Reprojected CRS or null

selectedProperties - list of properties to get

Returns:

The matching simple features

Throws:

IOException

skipFeatures

protected void skipFeatures(DataAccessMappingFeatureIterator featureIterator,
                            Expression nestedSourceExpression,
                            Object foreignKeyValue,
                            List<Object> idValues)
                     throws IOException

Throws:

IOException

skip

public void skip(Object caller,
                 Object foreignKeyValue,
                 List<Object> idValues)
          throws IOException

If we have decided not to build the parent feature, we need to skip all rows that were returned to build it

Parameters:

caller -

foreignKeyValue -

Throws:

IOException

getNestedFeatureIterators

public Map<Name,DataAccessMappingFeatureIterator> getNestedFeatureIterators(Object caller)

For testing purposes only: exposes the nested feature iterators to calling code.

Parameters:

caller - the object going through the features

Returns:

a map of nested feature iterators, keyed by nested feature type name