CartoType::CType1MapDataBase Class Reference

#include <cartotype_type1_map_database.h>

Inheritance diagram for CartoType::CType1MapDataBase:

List of all members.

Classes
class	CLayerInfo
class	TDataSet
class	TRegion
Public Types
enum	TReadMapObjectStatus {   EValid, EError, EOutOfBounds, EBadAttribute,   EBadLabel, EHighestFirstAttributeValueExceeded, EUnsupportedDataType }
enum	{   EGlobalTable = 0, ELayerTable = 1, ELabelIndexTable = 2, EProjectionTable30 = 3,   EProjectionTable = 4, EStringTable = 5, ELowResolutionLayerTable = 6 }
Public Member Functions
CMapDataContext *	NewContext (TResult &aError)
uint32	GetTableOffset (int32 aTableId) const
CType1MapLabelIndex *	LabelIndex () const
CType1MapObject *	ReadMapObject (TResult &aError, TReadMapObjectStatus &aStatus, CMapDataLayer &aLayer, int32 aDefaultFirstAttribute, const CMapDataContext &aContext, CType1MapObject *aOldMapObject)
TRegion &	Region (int32 aFilePos)
void	SetClip (const TRect &aClip)
const TDataSet *	GetLayerData (int32 aLayerIndex, int32 aResolution) const
Static Public Member Functions
static CType1MapDataBase *	New (TResult &aError, MInputStream &aInputStream)

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Detailed Description

Database for type 1 map files.

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Member Enumeration Documentation

anonymous enum

Named table constants.

enum CartoType::CType1MapDataBase::TReadMapObjectStatus

Status codes returned by ReadMapObject.

Enumerator:

EValid	A valid map object was returned.
EError	There was a system error such as a memory allocation failure: the code is in aError.
EOutOfBounds	The map object was rejected because it was outside the clip bounds.
EBadAttribute	The map object was rejected because it failed to match an attribute in aCondition->iAttribute.
EBadLabel	The map object was rejected because it failed to match the label in aCondition->iLabel.
EHighestFirstAttributeValueExceeded	The map object was rejected because its first attribute exceeded all values required by the search.
EUnsupportedDataType	The map object was rejected as an unsupported data type.

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Member Function Documentation

const CType1MapDataBase::TDataSet * CType1MapDataBase::GetLayerData	(	int32	aLayerIndex,
		int32	aResolution
	)		const

Return the positions of the data for a specific layer.

uint32 CartoType::CType1MapDataBase::GetTableOffset

(

int32

aTableId

)

const [inline]

Return the byte offset in the input data of the specified table. Return 0 if the table doesn't exist.

CType1MapLabelIndex* CartoType::CType1MapDataBase::LabelIndex

(

)

const [inline]

Return the label index if it exists.

CType1MapDataBase * CType1MapDataBase::New	(	TResult &	aError,
		MInputStream &	aInputStream
	)		[static]

Create new type 1 map database from an input stream and read database information.

CMapDataContext * CType1MapDataBase::NewContext

(

TResult &

aError

)

[virtual]

Return new context for searching the map database.

Implements CartoType::CMapDataBase.

CType1MapObject * CType1MapDataBase::ReadMapObject	(	TResult &	aError,
		TReadMapObjectStatus &	aStatus,
		CMapDataLayer &	aLayer,
		int32	aDefaultFirstAttribute,
		const CMapDataContext &	aContext,
		CType1MapObject *	aOldMapObject
	)

Read the map object at the current position in the input stream and construct it. Return it only if it intersects aClip. Also, return it only if iCondition is null or one of the conditions in iCondition is true. Use aAttributes as a temporary location for the object's attributes before actually constructing the object. It is guaranteed to be large enough. If aOldMapObject is given reuse it if possible.

CType1MapDataBase::TRegion & CType1MapDataBase::Region

(

int32

aFilePos

)

Return a reference to a cached region, creating a new region object with no known data apart from the file position if necessary. The cache is guaranteed to contain at least one region object, so this function cannot fail.

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The documentation for this class was generated from the following files:

• cartotype_type1_map_database.h
• cartotype_type1_map_database.cpp