com.geoway.mobile.datasources

类 OGRVectorDataBase

java.lang.Object

com.geoway.mobile.datasources.OGRVectorDataBase

public class OGRVectorDataBase
extends java.lang.Object

High-level vector element data source that supports various OGR data formats.
Shapefiles, GeoJSON, KML files can be used using this data source.

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

构造器和说明
OGRVectorDataBase(long cPtr, boolean cMemoryOwn)
OGRVectorDataBase(java.lang.String fileName, boolean writable) Constructs a new OGR database instance given OGR supported data file.

方法概要

限定符和类型	方法和说明
boolean	createLayer(java.lang.String name, int epsgCode, OGRGeometryType geometryType) Creates a new layer on top of existing layers.
void	delete()
boolean	deleteLayer(int index) Deletes an existing layer.
protected void	finalize()
static java.lang.String	getConfigOption(java.lang.String name) Returns the value of global OGR configuration option.
static long	getCPtr(OGRVectorDataBase obj)
int	getLayerCount() Returns the total layer count for this database.
StringVector	getLayerNames() Returns the names of all layers in the database.
static void	setConfigOption(java.lang.String name, java.lang.String value) Sets global OGR configuration option.
static OGRVectorDataBase	swigCreatePolymorphicInstance(long cPtr, boolean cMemoryOwn) Creates a polymorphic instance of the given native object.
java.lang.String	swigGetClassName() Returns the actual class name of this object.
java.lang.Object	swigGetDirectorObject() Returns the connected director object.
boolean	testCapability(java.lang.String capability) Tests the database capability.

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

OGRVectorDataBase

public OGRVectorDataBase(long cPtr,
                         boolean cMemoryOwn)

OGRVectorDataBase

public OGRVectorDataBase(java.lang.String fileName,
                         boolean writable)
                  throws java.io.IOException

Constructs a new OGR database instance given OGR supported data file.

参数:

fileName - The full path of the data file

writable - True when the database supports write operations. False when only read-only access is needed.

抛出:

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

java.io.IOException

方法详细资料

getCPtr

public static long getCPtr(OGRVectorDataBase obj)

finalize

protected void finalize()

覆盖:

finalize 在类中 java.lang.Object

delete

public void delete()

swigCreatePolymorphicInstance

public static OGRVectorDataBase 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.

getLayerCount

public int getLayerCount()

Returns the total layer count for this database.

返回:

The layer count for the database.

getLayerNames

public StringVector getLayerNames()

Returns the names of all layers in the database.

返回:

The names of the layers contained in the database.

createLayer

public boolean createLayer(java.lang.String name,
                           int epsgCode,
                           OGRGeometryType geometryType)

Creates a new layer on top of existing layers.

参数:

name - The name for the new layer.

epsgCode - EPSG code for geometry data (3857, for example)

geometryType - The geometry type for the layer.

返回:

True when the layer was successfully created, false otherwise.

deleteLayer

public boolean deleteLayer(int index)

Deletes an existing layer.

参数:

index - The layer index to delete.

返回:

True when the layer was successfully deleted, false otherwise.

testCapability

public boolean testCapability(java.lang.String capability)

Tests the database capability.

参数:

capability - The name of the capability (for example, "CreateLayer", "DeleteLayer")

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.

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.