Package org.geotools.data.complex

Class IndexedMappingFeatureIterator

Object

IndexedMappingFeatureIterator

All Implemented Interfaces:

Closeable, AutoCloseable, Iterator<Feature>, IMappingFeatureIterator, FeatureIterator<Feature>

Direct Known Subclasses:

PartialIndexedMappingFeatureIterator, TotalIndexedMappingFeatureIterator

public abstract class IndexedMappingFeatureIterator
extends Object
implements IMappingFeatureIterator

Base class for Indexed Iterators

Author:

Fernando Miño (Geosolutions

Field Summary

Fields

Modifier and Type	Field	Description
protected FilterFactory	ff
protected IndexIdIterator	indexIterator
protected IndexQueryManager	indexModeProc
protected FeatureTypeMapping	mapping
protected Query	query
protected IndexQueryManager.QueryIndexCoverage	queryMode
protected FeatureIterator<? extends Feature>	sourceIterator
protected AppSchemaDataAccess	store
protected Transaction	transaction
protected Filter	unrolledFilter

Constructor Summary

Constructors

Constructor	Description
IndexedMappingFeatureIterator(AppSchemaDataAccess store, FeatureTypeMapping mapping, Query query, Filter unrolledFilter, Transaction transaction, IndexQueryManager indexModeProcessor)

Method Summary

Modifier and Type	Method	Description
AttributeMapping	getFidAttrMap()
String	getFidIndexName()
XPathUtil.StepList	getFidStepList()
protected static AttributeMapping	getIndexedAttribute(FeatureTypeMapping mapping, String xpath)	Search for indexed attribute, including on Nested Features
protected IndexIdIterator	getIndexIterator()
protected List<PropertyName>	getIndexQueryProperties()
protected List<String>	getNextSourceIdList()	Extracts next id list from index iterator
protected void	initializeIndexIterator()	Initialize the index FeatureCollection and iterator
protected boolean	isDenormalized()
protected void	selectExecutionPlan()	Analyze query and select a plan: 1.- All fields indexed, execute all query on index layer 2.- Mixed fields indexed and not, execute indexed operators and re-map query to database
protected Query	transformQueryToIdsOnly()	Convert query to retrieve only id field, no other fields
protected Filter	unrollFilter(Filter filter)
static PropertyName	unrollIndex(PropertyName expression, FeatureTypeMapping mapping)
protected Query	unrollIndexes(Query query)
protected SortBy[]	unrollSortBy(SortBy[] sortArray)

Methods inherited from class Object

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

Methods inherited from interface FeatureIterator

close, hasNext, next

Methods inherited from interface Iterator

forEachRemaining, hasNext, next, remove

Field Detail

ff

protected FilterFactory ff

store

protected final AppSchemaDataAccess store

mapping

protected final FeatureTypeMapping mapping

query

protected final Query query

unrolledFilter

protected final Filter unrolledFilter

transaction

protected final Transaction transaction

indexIterator

protected IndexIdIterator indexIterator

sourceIterator

protected FeatureIterator<? extends Feature> sourceIterator

indexModeProc

protected IndexQueryManager indexModeProc

queryMode

protected IndexQueryManager.QueryIndexCoverage queryMode

Constructor Detail

IndexedMappingFeatureIterator

public IndexedMappingFeatureIterator(AppSchemaDataAccess store,
                                     FeatureTypeMapping mapping,
                                     Query query,
                                     Filter unrolledFilter,
                                     Transaction transaction,
                                     IndexQueryManager indexModeProcessor)

Method Detail

selectExecutionPlan

protected void selectExecutionPlan()

Analyze query and select a plan: 1.- All fields indexed, execute all query on index layer 2.- Mixed fields indexed and not, execute indexed operators and re-map query to database

unrollIndexes

protected Query unrollIndexes(Query query)

unrollSortBy

protected SortBy[] unrollSortBy(SortBy[] sortArray)

unrollIndex

public static PropertyName unrollIndex(PropertyName expression,
                                       FeatureTypeMapping mapping)

unrollFilter

protected Filter unrollFilter(Filter filter)

getFidStepList

public XPathUtil.StepList getFidStepList()

getFidAttrMap

public AttributeMapping getFidAttrMap()

getFidIndexName

public String getFidIndexName()

isDenormalized

protected boolean isDenormalized()

getIndexIterator

protected IndexIdIterator getIndexIterator()

initializeIndexIterator

protected void initializeIndexIterator()
                                throws IOException

Initialize the index FeatureCollection and iterator

Throws:

IOException

transformQueryToIdsOnly

protected Query transformQueryToIdsOnly()

Convert query to retrieve only id field, no other fields

Returns:

converted Query

getIndexQueryProperties

protected List<PropertyName> getIndexQueryProperties()

getNextSourceIdList

protected List<String> getNextSourceIdList()

Extracts next id list from index iterator

Returns:

list of id string

getIndexedAttribute

protected static AttributeMapping getIndexedAttribute(FeatureTypeMapping mapping,
                                                      String xpath)

Search for indexed attribute, including on Nested Features

Returns:

indexed attribute xpath, or null if not found