com.nutiteq.datasources.vector

Class SpatialiteDataSource

java.lang.Object

com.nutiteq.vectordatasources.AbstractVectorDataSource<com.nutiteq.geometry.Geometry>

com.nutiteq.datasources.vector.SpatialiteDataSource

All Implemented Interfaces:

com.nutiteq.vectordatasources.VectorDataSource<com.nutiteq.geometry.Geometry>

Direct Known Subclasses:

EditableSpatialiteDataSource

public abstract class SpatialiteDataSource
extends com.nutiteq.vectordatasources.AbstractVectorDataSource<com.nutiteq.geometry.Geometry>

Abstract data source for local Spatialite databases. Instances need to define factory methods for creating style sets based on element metadata.

Author:

mark

Nested Class Summary

Nested classes/interfaces inherited from interface com.nutiteq.vectordatasources.VectorDataSource

com.nutiteq.vectordatasources.VectorDataSource.OnChangeListener

Field Summary

Fields

Modifier and Type	Field and Description
protected SpatialLiteDbHelper.DbLayer	dbLayer
protected SpatialLiteDbHelper	spatialLite

Fields inherited from class com.nutiteq.vectordatasources.AbstractVectorDataSource

projection

Constructor Summary

Constructors

Constructor and Description
SpatialiteDataSource(com.nutiteq.projections.Projection proj, SpatialLiteDbHelper spatialLiteDb, String tableName, String geomColumnName, String[] userColumns, String filter) Construct data source with the SpatialLiteDb already opened, and filters
SpatialiteDataSource(com.nutiteq.projections.Projection proj, String dbPath, String tableName, String geomColumnName, String[] userColumns, String filter) Default constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract com.nutiteq.ui.Label	createLabel(Map<String,String> userData)
protected abstract com.nutiteq.style.StyleSet<com.nutiteq.style.LineStyle>	createLineStyleSet(Map<String,String> userData, int zoom)
protected abstract com.nutiteq.style.StyleSet<com.nutiteq.style.PointStyle>	createPointStyleSet(Map<String,String> userData, int zoom)
protected abstract com.nutiteq.style.StyleSet<com.nutiteq.style.PolygonStyle>	createPolygonStyleSet(Map<String,String> userData, int zoom)
com.nutiteq.components.Envelope	getDataExtent()
Collection<com.nutiteq.geometry.Geometry>	loadElements(com.nutiteq.components.CullState cullState)
void	setAutoSimplify(float autoSimplifyPixels, int screenWidth) Set auto-simplification parameters for queries.
void	setMaxElements(int maxElements) Limit maximum objects returned by each query.

Methods inherited from class com.nutiteq.vectordatasources.AbstractVectorDataSource

addOnChangeListener, getProjection, notifyElementChanged, notifyElementsChanged, onElementChanged, removeOnChangeListener

Methods inherited from class java.lang.Object

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

Field Detail

spatialLite

protected final SpatialLiteDbHelper spatialLite

dbLayer

protected SpatialLiteDbHelper.DbLayer dbLayer

Constructor Detail

SpatialiteDataSource

public SpatialiteDataSource(com.nutiteq.projections.Projection proj,
                    String dbPath,
                    String tableName,
                    String geomColumnName,
                    String[] userColumns,
                    String filter)
                     throws IOException

Default constructor.

Parameters:

proj - data source projection

dbPath - path to Spatialite file

tableName - table from the database

geomColumnName - geometry column from the table

userColumns - load data from these columns as userData

filter - filter expression for queries

Throws:

IOException

SpatialiteDataSource

public SpatialiteDataSource(com.nutiteq.projections.Projection proj,
                    SpatialLiteDbHelper spatialLiteDb,
                    String tableName,
                    String geomColumnName,
                    String[] userColumns,
                    String filter)

Construct data source with the SpatialLiteDb already opened, and filters

Parameters:

proj - data source projection

spatialLiteDb - Spatialite database

tableName - table from the database

geomColumnName - geometry column from the table

userColumns - load data from these columns as userData

filter - SQL filter to select some objects, used for WHERE

Method Detail

setMaxElements

public void setMaxElements(int maxElements)

Limit maximum objects returned by each query.

Parameters:

maxElements - maximum objects

setAutoSimplify

public void setAutoSimplify(float autoSimplifyPixels,
                   int screenWidth)

Set auto-simplification parameters for queries.

Parameters:

autoSimplifyPixels - maximum allowed error resulting from simplification

screenWidth - target screen width in pixels

getDataExtent

public com.nutiteq.components.Envelope getDataExtent()

loadElements

public Collection<com.nutiteq.geometry.Geometry> loadElements(com.nutiteq.components.CullState cullState)

createLabel

protected abstract com.nutiteq.ui.Label createLabel(Map<String,String> userData)

createPointStyleSet

protected abstract com.nutiteq.style.StyleSet<com.nutiteq.style.PointStyle> createPointStyleSet(Map<String,String> userData,
                                                                           int zoom)

createLineStyleSet

protected abstract com.nutiteq.style.StyleSet<com.nutiteq.style.LineStyle> createLineStyleSet(Map<String,String> userData,
                                                                         int zoom)

createPolygonStyleSet

protected abstract com.nutiteq.style.StyleSet<com.nutiteq.style.PolygonStyle> createPolygonStyleSet(Map<String,String> userData,
                                                                               int zoom)