com.visioglobe.libVisioDevKit

Class VgIDatabase

java.lang.Object

com.visioglobe.libVisioDevKit.VgIDatabase

public class VgIDatabase
extends java.lang.Object

The VgIDatabase interface is used to load and select the data that will be displayed in the 3D view. This interface depends on how databases are bundled. First, the data structure, with all available datasets, is described in a configuration file. This file must be loaded (using the VgIDatabase::loadConfiguration method), then a particular dataset can be selected to be displayed in the 3D view (using the VgIDatabase::selectDataset method). Example:

Interface:

VgEngine::VgIDatabase

Date:

25/02/2010

Method Summary

Methods

Modifier and Type	Method and Description
void	delete()
boolean	getCachedLicenseFilenameForConfiguration(java.lang.String pConfigFilename, java.lang.String[] pOutLicenseFilename)
VgIDatabaseDatasetDescriptor	getCurrentDatasetDescriptor() Retrieves the descriptor of the current dataset.
VgIDatabaseDatasetDescriptorVector	getDatasetDescriptors() Retrieves the vector of all available datasets.
boolean	loadConfiguration(java.lang.String pConfigFilename, long pSecretKey)
boolean	loadConfiguration(java.lang.String pConfigFilename, long pSecretKey, java.lang.String pLicenseGeneratorURL) Loads a database configuration from a mass storage.
boolean	selectDataset(int pIndex) Selects a dataset using its index.
boolean	selectDataset(java.lang.String pDatasetName) Selects a dataset using its name.
void	unloadConfiguration() unloads the current configuration if there is one.

Methods inherited from class java.lang.Object

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

Method Detail

delete

public void delete()

loadConfiguration

public boolean loadConfiguration(java.lang.String pConfigFilename,
                        long pSecretKey,
                        java.lang.String pLicenseGeneratorURL)

Loads a database configuration from a mass storage.

Parameters:

pConfigFilename - The path of the configuration file to be loaded. This parameter may be either an abosolute path or (on iOS only) it may be a path relative to the application directory: {APPLICATIONS_DIRECTORY}/{GUID_DIRECTORY}/{NAME_OF_APP}.app/

pSecretKey - The secret key that matches the secret key that was used to generate the associated licence xml file's hash code.

pLicenseGeneratorURL - The URL that will be reached to get the license if missing.

Returns:

true if the configuration file was loaded successfully, otherwise false.

Remark:

If loadConfiguration() returns false, the VgIEngine::getLastError() and VgIEngine::getErrorString() can be used in conjunction to find the reason., If loadConfiguration() needs to update the license file from the network it will create a cached license. This filename can be retrieved with bool getCachedLicenseFilenameForConfiguration()

loadConfiguration

public boolean loadConfiguration(java.lang.String pConfigFilename,
                        long pSecretKey)

unloadConfiguration

public void unloadConfiguration()

unloads the current configuration if there is one. It releases the resources and stops any threads created

getCachedLicenseFilenameForConfiguration

public boolean getCachedLicenseFilenameForConfiguration(java.lang.String pConfigFilename,
                                               java.lang.String[] pOutLicenseFilename)

selectDataset

public boolean selectDataset(java.lang.String pDatasetName)

Selects a dataset using its name. Visual data will be rendered on the view during the preceding display.

Parameters:

pDatasetName - The name of the dataset. Needs to match the name of a dataset defined within the currently loaded configuration file.

Returns:

true if a new dataset was loaded, otherwise false. In case of failure, the previous dataset remains active.

selectDataset

public boolean selectDataset(int pIndex)

Selects a dataset using its index. Visual data will be rendered on the view during the preceding display.

Parameters:

pIndex - Index of dataset, indicated by it's position relative to other datasets within the configuration file (starting at 0).

Returns:

true if a new dataset was loaded, otherwise false. In case of failure, the previous dataset is still active.

getCurrentDatasetDescriptor

public VgIDatabaseDatasetDescriptor getCurrentDatasetDescriptor()

Retrieves the descriptor of the current dataset.

Returns:

Descriptor of the currently loaded dataset. If there isn't a valid current database dataset descriptor, then NULL will be returned.

getDatasetDescriptors

public VgIDatabaseDatasetDescriptorVector getDatasetDescriptors()

Retrieves the vector of all available datasets.

Returns:

Vector of descriptors for all available datasets.