Class DataSourceFinder
- Object
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- DataSourceFinder
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public final class DataSourceFinder extends Object
Enable programs to find all availableDataSourceFactorySpi
implementations.In addition to implementing this interface data souces should have a services file:
META-INF/services/org.geotools.data.jdbc.DataSourceFactorySpi
The file should contain a single line which gives the full name of the implementing class.
Example:
org.geotools.data.jdbc.DBCPDataSourceFactory
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static Iterator<DataSourceFactorySpi>
getAvailableDataSources()
Finds all implementations of DataStoreFactory which have registered using the services mechanism, and that have the appropriate libraries on the classpath.static DataSource
getDataSource(Map<String,?> params)
Checks each available datasource implementation in turn and returns the first one which claims to support the resource identified by the params object.static UnWrapper
getUnWrapper(Connection conn)
Checks each available datasource implementation in turn and returns the first one which claims to support the resource identified by the params object.static UnWrapper
getUnWrapper(Statement st)
Checks each availableUnWrapper
implementation in turn and returns the first one which claims to support the resource identified by the params object.static Iterator<UnWrapper>
getUnWrappers()
Finds all implementations of UnWrapper which have registered using the services mechanism, and that have the appropriate libraries on the classpath.static void
scanForPlugins()
Scans for factory plug-ins on the application class path.
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Field Detail
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LOGGER
protected static final Logger LOGGER
The logger for the filter module.
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Method Detail
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getDataSource
public static DataSource getDataSource(Map<String,?> params) throws IOException
Checks each available datasource implementation in turn and returns the first one which claims to support the resource identified by the params object.- Parameters:
params
- A Map object which contains a defenition of the resource to connect to. for file based resources the property 'url' should be set within this Map.- Returns:
- The first datasource which claims to process the required resource, returns null if none can be found.
- Throws:
IOException
- If a suitable loader can be found, but it can not be attached to the specified resource without errors.
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getUnWrapper
public static UnWrapper getUnWrapper(Connection conn) throws IOException
Checks each available datasource implementation in turn and returns the first one which claims to support the resource identified by the params object.- Returns:
- The first datasource which claims to process the required resource, returns null if none can be found.
- Throws:
IOException
- If a suitable loader can be found, but it can not be attached to the specified resource without errors.
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getUnWrapper
public static UnWrapper getUnWrapper(Statement st) throws IOException
Checks each availableUnWrapper
implementation in turn and returns the first one which claims to support the resource identified by the params object.- Returns:
- The first datasource which claims to process the required resource, returns null if none can be found.
- Throws:
IOException
- If a suitable loader can be found, but it can not be attached to the specified resource without errors.
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getAvailableDataSources
public static Iterator<DataSourceFactorySpi> getAvailableDataSources()
Finds all implementations of DataStoreFactory which have registered using the services mechanism, and that have the appropriate libraries on the classpath.- Returns:
- An iterator over all discovered DataStores which have registered factories, and whose available method returns true.
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getUnWrappers
public static Iterator<UnWrapper> getUnWrappers()
Finds all implementations of UnWrapper which have registered using the services mechanism, and that have the appropriate libraries on the classpath.- Returns:
- An iterator over all discovered UnWrapper which have registered factories
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scanForPlugins
public static void scanForPlugins()
Scans for factory plug-ins on the application class path. This method is needed because the application class path can theoretically change, or additional plug-ins may become available. Rather than re-scanning the classpath on every invocation of the API, the class path is scanned automatically only on the first invocation. Clients can call this method to prompt a re-scan. Thus this method need only be invoked by sophisticated applications which dynamically make new plug-ins available at runtime.
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