com.geoway.mobile.datasources

类 GeoPkgDataSource

java.lang.Object

com.geoway.mobile.datasources.VectorDataSource

com.geoway.mobile.datasources.GeoPkgDataSource

public class GeoPkgDataSource
extends VectorDataSource

字段概要

从类继承的字段 com.geoway.mobile.datasources.VectorDataSource

swigCMemOwn

构造器概要

构造器

构造器和说明
GeoPkgDataSource(long cPtr, boolean cMemoryOwn)
GeoPkgDataSource(Projection projection, StyleSelector styleSelector, java.lang.String fileName) Constructs a new OGR data source given style selector and OGR supported data file.

方法概要

限定符和类型	方法和说明
void	delete()
protected void	finalize()
java.lang.String	getCodePage() Returns the current code page used for decoding DBF text data.
static java.lang.String	getConfigOption(java.lang.String name) Returns the value of global OGR configuration option.
static long	getCPtr(GeoPkgDataSource obj)
MapBounds	getDataExtent() Returns the extent of this data source.
int	getFeatureCount() 获取要素的总数
StringVector	getFieldNames() 获取字段名称列表
GeometrySimplifier	getGeometrySimplifier() Returns the active geometry simplifier of the data source.
OGRGeometryType	getGeometryType() 获取几何类型
void	intersection(VectorElement input, VectorElementVector listOutPut)
void	intersection(VectorElement input, VectorElementVector listInput, VectorElementVector listOutPut)
VectorData	loadElements(CullState cullState) Loads all the elements within the defined envelope.
VectorElementVector	query(java.lang.String strSql, int limit) 基于Sql查询满足条件的元素
void	select(VectorElement input, VectorElementVector listOutPut) i查询点击地图返回多边形要素
void	setCodePage(java.lang.String codePage) Specifies the code page to use for decoding DBF text data.
static void	setConfigOption(java.lang.String name, java.lang.String value) Sets global OGR configuration option.
void	setGeometrySimplifier(GeometrySimplifier simplifier) Attaches geometry simplifier to the data source.
static GeoPkgDataSource	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()
boolean	testCapability(java.lang.String capability) Tests the data source capability.

从类继承的方法 com.geoway.mobile.datasources.VectorDataSource

getCPtr, getProjection, notifyElementChanged, notifyElementsChanged, notifyElementsChanged

从类继承的方法 java.lang.Object

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

构造器详细资料

GeoPkgDataSource

public GeoPkgDataSource(long cPtr,
                        boolean cMemoryOwn)

GeoPkgDataSource

public GeoPkgDataSource(Projection projection,
                        StyleSelector styleSelector,
                        java.lang.String fileName)

Constructs a new OGR data source given style selector and OGR supported data file.
If the file contains multiple layers, only the first layer is used. Note: data source is opened in read-only mode.

参数:

projection - The projection to use for data coordinates. Note that if actual data is in different coordinates, coordinates will be re-projected.

styleSelector - The style selector to use when loading geometry from OGR file.

fileName - The full path of the data file

抛出:

java.lang.Exception - If the file could not be opened.

方法详细资料

getCPtr

public static long getCPtr(GeoPkgDataSource obj)

finalize

protected void finalize()

覆盖:

finalize 在类中 VectorDataSource

delete

public void delete()

覆盖:

delete 在类中 VectorDataSource

swigDirectorDisconnect

protected void swigDirectorDisconnect()

覆盖:

swigDirectorDisconnect 在类中 VectorDataSource

swigReleaseOwnership

public void swigReleaseOwnership()

覆盖:

swigReleaseOwnership 在类中 VectorDataSource

swigTakeOwnership

public void swigTakeOwnership()

覆盖:

swigTakeOwnership 在类中 VectorDataSource

swigCreatePolymorphicInstance

public static GeoPkgDataSource 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.

getCodePage

public java.lang.String getCodePage()

Returns the current code page used for decoding DBF text data. The default is ISO-8859-1.

返回:

The current code page for text data.

setCodePage

public void setCodePage(java.lang.String codePage)

Specifies the code page to use for decoding DBF text data.

参数:

codePage - The codepage to use (for example, "CP1254", or any other iconv encoding)

getGeometrySimplifier

public GeometrySimplifier getGeometrySimplifier()

Returns the active geometry simplifier of the data source.

返回:

The current geometry simplifier (can be null)

setGeometrySimplifier

public void setGeometrySimplifier(GeometrySimplifier simplifier)

Attaches geometry simplifier to the data source. If the specified simplifier is null, detaches any active simplifier.

参数:

simplifier - The new geometry simplifier to use (can be null).

getDataExtent

public MapBounds getDataExtent()

Returns the extent of this data source. Extent is the minimal bounding box encompassing all the elements.

返回:

The minimal bounding box for the elements.

getFeatureCount

public int getFeatureCount()

获取要素的总数

返回:

要素的总数

getGeometryType

public OGRGeometryType getGeometryType()

获取几何类型

返回:

几何类型

getFieldNames

public StringVector getFieldNames()

获取字段名称列表

返回:

字段名称列表

query

public VectorElementVector query(java.lang.String strSql,
                                 int limit)

基于Sql查询满足条件的元素

参数:

strSql - Sql语句

limit - 返回的最大条数

返回:

元素列表

loadElements

public VectorData loadElements(CullState cullState)

从类复制的说明: VectorDataSource

Loads all the elements within the defined envelope.

覆盖:

loadElements 在类中 VectorDataSource

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.

testCapability

public boolean testCapability(java.lang.String capability)

Tests the data source capability.

参数:

capability - The name of the capability (for example, "CreateFeature", "DeleteFeature", etc)

返回:

True when the capability exists, false otherwise.

setConfigOption

public static void setConfigOption(java.lang.String name,
                                   java.lang.String value)

Sets global OGR configuration option. This method can be used to redefine default locale, for example.

参数:

name - The name of the option parameter to set ("SHAPE_ENCODING", for example)

value - The value of the parameter.

getConfigOption

public static java.lang.String getConfigOption(java.lang.String name)

Returns the value of global OGR configuration option.

参数:

name - The name of the the option parameter to read.

返回:

The value of the specified option parameter.

intersection

public void intersection(VectorElement input,
                         VectorElementVector listOutPut)

intersection

public void intersection(VectorElement input,
                         VectorElementVector listInput,
                         VectorElementVector listOutPut)

select

public void select(VectorElement input,
                   VectorElementVector listOutPut)

i查询点击地图返回多边形要素

参数:

input - i查询点击的point

listOutPut - 查询到的多边形要素列表

swigGetClassName

public java.lang.String swigGetClassName()

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

覆盖:

swigGetClassName 在类中 VectorDataSource

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.

覆盖:

swigGetDirectorObject 在类中 VectorDataSource

返回:

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