All Superinterfaces:

Factory

All Known Implementing Classes:

AbstractDataSourceFactorySpi, DBCPDataSourceFactory, JNDIDataSourceFactory
```
public interface DataSourceFactorySpi
extends Factory
```
Constructs a live DataSource from a set of parameters.
An instance of this interface should exist for all DataSource providers, common examples being JNDI, DBCP, C3P0. In addition to implementing this interface data source providers should have a services file:
META-INF/services/org.geotools.data.DataSourceFactorySpi
The file should contain a single line which gives the full name of the implementing class.
example:
e.g. org.geotools.data.dbpc.DBCPDataSourceFactory
The factories are never called directly by client code, instead the DataSourceFinder class is used.
The following example shows how a user might setup a DBCP connection pool::
```
 HashMap params = new HashMap();
 params.put("url","jdbc:postgresql://localhost/dbname");
 params.put("driverClassName","org.postgresql.Driver");
 params.put("username", "5432");
 params.put("password","postgis_test");
 params.put("maxActive", "10");

 DataSource ds = DataSourceFinder.getDataSource(params);
 
```
Author:

Andrea Aime - TOPP

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`canProcess(Map<String,?> params)`	Test to see if this factory is suitable for processing the data pointed to by the params map.
`DataSource`	`createDataSource(Map<String,?> params)`	Construct a live data source using the params specifed.
`DataSource`	`createNewDataSource(Map<String,?> params)`	Same as `createDataSource(Map)`, but forces the creation of a new DataSource
`String`	`getDescription()`	Describe the nature of the data source constructed by this factory.
`String`	`getDisplayName()`	Name suitable for display to end user.
`DataAccessFactory.Param[]`	`getParametersInfo()`	MetaData about the required Parameters (for `createDataSource(Map)`).
`boolean`	`isAvailable()`	Test to see if this data source is available, if it has all the appropriate libraries to construct a datastore.

Methods inherited from interface Factory
getImplementationHints

- Method Detail
  - createDataSource
```
DataSource createDataSource(Map<String,?> params)
                     throws IOException
```
    Construct a live data source using the params specifed. The returned DataSource may be pooled.
    
    Parameters:
    
    params - The full set of information needed to construct a live DataSource.
    
    Returns:
    
    The created DataSource, this may be null if the required resource was not found or if insufficent parameters were given. Note that canProcess() should have returned false if the problem is to do with insuficent parameters.
    
    Throws:
    
    IOException - if there were any problems setting up (creating or connecting) the datasource.
  - createNewDataSource
```
DataSource createNewDataSource(Map<String,?> params)
                        throws IOException
```
    Same as createDataSource(Map), but forces the creation of a new DataSource
    
    Throws:
    
    IOException
  - getDisplayName
```
String getDisplayName()
```
    Name suitable for display to end user.
    A non localized display name for this data source type.
    
    Returns:
    
    A short name suitable for display in a user interface.
  - getDescription
```
String getDescription()
```
    Describe the nature of the data source constructed by this factory.
    A non localized description of this data store type.
    
    Returns:
    
    A human readable description that is suitable for inclusion in a list of available datasources.
  - getParametersInfo
```
DataAccessFactory.Param[] getParametersInfo()
```
    MetaData about the required Parameters (for createDataSource(Map)).
    
    Returns:
    
    Param array describing the Map for createDataStore
  - canProcess
```
boolean canProcess(Map<String,?> params)
```
    Test to see if this factory is suitable for processing the data pointed to by the params map.
    If this data source requires a number of parameters then this mehtod should check that they are all present and that they are all valid.
    
    Parameters:
    
    params - The full set of information needed to construct a live data source.
    
    Returns:
    
    booean true if and only if this factory can process the resource indicated by the param set and all the required params are pressent.
  - isAvailable
```
boolean isAvailable()
```
    Test to see if this data source is available, if it has all the appropriate libraries to construct a datastore.
    
    Returns:
    
    true if and only if this factory has all the appropriate jars on the classpath to create DataSource.

Interface DataSourceFactorySpi

Method Summary

Methods inherited from interface Factory

Method Detail

createDataSource

createNewDataSource

getDisplayName

getDescription

getParametersInfo

canProcess

isAvailable