com.geoway.mobile.datasources

类 VectorDataSource

java.lang.Object

com.geoway.mobile.datasources.VectorDataSource

直接已知子类:

GeoPkgDataSource, LocalVectorDataSource, OGRVectorDataSource, ShpFileDataSource

public class VectorDataSource
extends java.lang.Object

Abstract base class for envelope based vector data sources. It provides default implementation
for listener registration and other common data source methods.
Subclasses need to define their own implementations of loadElements method.

The draw order of vector elements within the data source is undefined.

字段概要

字段

限定符和类型	字段和说明
protected boolean	swigCMemOwn

构造器概要

构造器

限定符	构造器和说明
	VectorDataSource(long cPtr, boolean cMemoryOwn)
protected	VectorDataSource(Projection projection) Constructs an abstract VectorDataSource object.

方法概要

限定符和类型	方法和说明
void	delete()
protected void	finalize()
static long	getCPtr(VectorDataSource obj)
Projection	getProjection() Returns the projection used by this data source.
VectorData	loadElements(CullState cullState) Loads all the elements within the defined envelope.
void	notifyElementChanged(VectorElement element)
void	notifyElementsChanged() Notifies listeners that all vector elements have changed.
void	notifyElementsChanged(VectorElementVector elements)
static VectorDataSource	swigCreatePolymorphicInstance(long cPtr, boolean cMemoryOwn) Creates a polymorphic instance of the given native object.
protected void	swigDirectorDisconnect()
java.lang.String	swigGetClassName() Returns the actual class name of this object.
java.lang.Object	swigGetDirectorObject() Returns the connected director object.
void	swigReleaseOwnership()
void	swigTakeOwnership()

从类继承的方法 java.lang.Object

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

字段详细资料

swigCMemOwn

protected boolean swigCMemOwn

构造器详细资料

VectorDataSource

public VectorDataSource(long cPtr,
                        boolean cMemoryOwn)

VectorDataSource

protected VectorDataSource(Projection projection)

Constructs an abstract VectorDataSource object.

参数:

projection - The projection used by this data source.

方法详细资料

getCPtr

public static long getCPtr(VectorDataSource obj)

finalize

protected void finalize()

覆盖:

finalize 在类中 java.lang.Object

delete

public void delete()

swigDirectorDisconnect

protected void swigDirectorDisconnect()

swigReleaseOwnership

public void swigReleaseOwnership()

swigTakeOwnership

public void swigTakeOwnership()

swigCreatePolymorphicInstance

public static VectorDataSource swigCreatePolymorphicInstance(long cPtr,
                                                             boolean cMemoryOwn)

Creates a polymorphic instance of the given native object. This is used internally by the SDK.

参数:

cPtr - The native pointer of the instance.

cMemoryOwn - The ownership flag.

返回:

The created instance.

getProjection

public Projection getProjection()

Returns the projection used by this data source.

返回:

The projection used by this data source.

loadElements

public VectorData loadElements(CullState cullState)

Loads all the elements within the defined envelope.

参数:

cullState - State for describing view parameters and conservative view envelope.

返回:

The vector of loaded vector elements. If no elements are available, null may be returned.

notifyElementsChanged

public void notifyElementsChanged()

Notifies listeners that all vector elements have changed. This method refreshes all the existing
vector elements in the data source.

notifyElementChanged

public void notifyElementChanged(VectorElement element)

notifyElementsChanged

public void notifyElementsChanged(VectorElementVector elements)

swigGetClassName

public java.lang.String swigGetClassName()

Returns the actual class name of this object. This is used internally by the SDK.

返回:

The class name of this object.

swigGetDirectorObject

public java.lang.Object swigGetDirectorObject()

Returns the connected director object. This is used internally by the SDK.

返回:

The connected director object or null if director is not connected.