JDBCDataStoreFactory (Geotools modules 21-SNAPSHOT API)

Object
- JDBCDataStoreFactory

All Implemented Interfaces:

DataAccessFactory, DataStoreFactorySpi, Factory

Direct Known Subclasses:

DB2NGDataStoreFactory, GeoPkgDataStoreFactory, H2DataStoreFactory, JDBCJNDIDataStoreFactory, MBTilesDataStoreFactory, MySQLDataStoreFactory, OracleNGDataStoreFactory, PostgisNGDataStoreFactory, SpatiaLiteDataStoreFactory, SQLServerDataStoreFactory, TeradataDataStoreFactory
```
public abstract class JDBCDataStoreFactory
extends Object
implements DataStoreFactorySpi
```
Abstract implementation of DataStoreFactory for jdbc datastores.

Author:

Justin Deoliveira, The Open Planning Project

Nested Class Summary
- Nested classes/interfaces inherited from interface DataAccessFactory
  DataAccessFactory.Param

Field Summary

Fields
Modifier and Type	Field and Description
`static DataAccessFactory.Param`	`BATCH_INSERT_SIZE` If different from one, the JDBCInsertFeatureWriter will buffer the features and insert them in batches
`static DataAccessFactory.Param`	`CALLBACK_FACTORY` JDBC callback factory
`static DataAccessFactory.Param`	`DATABASE` parameter for database instance
`static DataAccessFactory.Param`	`DATASOURCE` parameter for data source
`static DataAccessFactory.Param`	`DBTYPE` parameter for database type
`static DataAccessFactory.Param`	`EVICTOR_TESTS_PER_RUN` Number of connections checked during a single evictor run *
`static DataAccessFactory.Param`	`EXPOSE_PK` expose primary key columns as attributes
`static DataAccessFactory.Param`	`FETCHSIZE` Number of records read
`static DataAccessFactory.Param`	`HOST` parameter for database host
`static DataAccessFactory.Param`	`MAX_OPEN_PREPARED_STATEMENTS` Number of prepared statements cached per connection (this param is exposed only by factories supporting prepared statements *
`static DataAccessFactory.Param`	`MAXCONN` Maximum number of connections in the connection pool
`static DataAccessFactory.Param`	`MAXWAIT` Maximum amount of time the pool will wait when trying to grab a new connection *
`static DataAccessFactory.Param`	`MIN_EVICTABLE_TIME` Min time for a connection to be idle in order to be evicted *
`static DataAccessFactory.Param`	`MINCONN` Minimum number of connections in the connection pool
`static DataAccessFactory.Param`	`NAMESPACE` parameter for namespace of the datastore
`static DataAccessFactory.Param`	`PASSWD` parameter for database password
`static DataAccessFactory.Param`	`PK_METADATA_TABLE` Metadata table providing information about primary keys *
`static DataAccessFactory.Param`	`PORT` parameter for database port
`static DataAccessFactory.Param`	`SCHEMA` parameter for database schema
`static DataAccessFactory.Param`	`SQL_ON_BORROW` SQL executed when the session begins
`static DataAccessFactory.Param`	`SQL_ON_RELEASE` SQL executed when the session ends
`static DataAccessFactory.Param`	`TEST_WHILE_IDLE` If IDLE connections should be validated before using them *
`static DataAccessFactory.Param`	`TIME_BETWEEN_EVICTOR_RUNS` Idle object evictor periodicity *
`static DataAccessFactory.Param`	`USER` parameter for database user
`static DataAccessFactory.Param`	`VALIDATECONN` If connections should be validated before using them

Constructor Summary

Constructors
Constructor and Description

JDBCDataStoreFactory()

Constructors
Constructor and Description
`JDBCDataStoreFactory()`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`canProcess(Map params)` Default implementation verifies the Map against the Param information.
`protected boolean`	`checkDBType(Map params)`
`protected boolean`	`checkDBType(Map params, String dbtype)`
`BasicDataSource`	`createDataSource(Map params)` DataSource access allowing SQL use: intended to allow client code to query available schemas.
`protected DataSource`	`createDataSource(Map params, SQLDialect dialect)` Creates the datasource for the data store.
`JDBCDataStore`	`createDataStore(Map params)` Construct a live data source using the params specifed.
`protected JDBCDataStore`	`createDataStoreInternal(JDBCDataStore dataStore, Map params)` Subclass hook to do additional initialization of a newly created datastore.
`DataStore`	`createNewDataStore(Map params)`
`protected abstract SQLDialect`	`createSQLDialect(JDBCDataStore dataStore)` Creates the dialect that the datastore uses for communication with the underlying database.
`protected abstract String`	`getDatabaseID()` Returns a string to identify the type of the database.
`String`	`getDisplayName()` Name suitable for display to end user.
`protected abstract String`	`getDriverClassName()` Returns the fully qualified class name of the jdbc driver.
`Map<RenderingHints.Key,?>`	`getImplementationHints()` Returns the implementation hints for the datastore.
`protected String`	`getJDBCUrl(Map params)` Builds up the JDBC url in a jdbc:://:/ Override if you need a different setup
`DataAccessFactory.Param[]`	`getParametersInfo()` MetaData about the required Parameters (for createDataStore).
`protected abstract String`	`getValidationQuery()` Override this to return a good validation query (a very quick one, such as one that asks the database what time is it) or return null if the factory does not support validation.
`boolean`	`isAvailable()` Determines if the datastore is available.
`protected void`	`setupParameters(Map parameters)` Sets up the database connection parameters.

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface DataAccessFactory
getDescription

- Field Detail
  - DBTYPE
```
public static final DataAccessFactory.Param DBTYPE
```
    parameter for database type
  - HOST
```
public static final DataAccessFactory.Param HOST
```
    parameter for database host
  - PORT
```
public static final DataAccessFactory.Param PORT
```
    parameter for database port
  - DATABASE
```
public static final DataAccessFactory.Param DATABASE
```
    parameter for database instance
  - SCHEMA
```
public static final DataAccessFactory.Param SCHEMA
```
    parameter for database schema
  - USER
```
public static final DataAccessFactory.Param USER
```
    parameter for database user
  - PASSWD
```
public static final DataAccessFactory.Param PASSWD
```
    parameter for database password
  - NAMESPACE
```
public static final DataAccessFactory.Param NAMESPACE
```
    parameter for namespace of the datastore
  - DATASOURCE
```
public static final DataAccessFactory.Param DATASOURCE
```
    parameter for data source
  - MAXCONN
```
public static final DataAccessFactory.Param MAXCONN
```
    Maximum number of connections in the connection pool
  - MINCONN
```
public static final DataAccessFactory.Param MINCONN
```
    Minimum number of connections in the connection pool
  - VALIDATECONN
```
public static final DataAccessFactory.Param VALIDATECONN
```
    If connections should be validated before using them
  - FETCHSIZE
```
public static final DataAccessFactory.Param FETCHSIZE
```
    Number of records read
  - BATCH_INSERT_SIZE
```
public static final DataAccessFactory.Param BATCH_INSERT_SIZE
```
    If different from one, the JDBCInsertFeatureWriter will buffer the features and insert them in batches
  - MAXWAIT
```
public static final DataAccessFactory.Param MAXWAIT
```
    Maximum amount of time the pool will wait when trying to grab a new connection *
  - TEST_WHILE_IDLE
```
public static final DataAccessFactory.Param TEST_WHILE_IDLE
```
    If IDLE connections should be validated before using them *
  - TIME_BETWEEN_EVICTOR_RUNS
```
public static final DataAccessFactory.Param TIME_BETWEEN_EVICTOR_RUNS
```
    Idle object evictor periodicity *
  - MIN_EVICTABLE_TIME
```
public static final DataAccessFactory.Param MIN_EVICTABLE_TIME
```
    Min time for a connection to be idle in order to be evicted *
  - EVICTOR_TESTS_PER_RUN
```
public static final DataAccessFactory.Param EVICTOR_TESTS_PER_RUN
```
    Number of connections checked during a single evictor run *
  - PK_METADATA_TABLE
```
public static final DataAccessFactory.Param PK_METADATA_TABLE
```
    Metadata table providing information about primary keys *
  - MAX_OPEN_PREPARED_STATEMENTS
```
public static final DataAccessFactory.Param MAX_OPEN_PREPARED_STATEMENTS
```
    Number of prepared statements cached per connection (this param is exposed only by factories supporting prepared statements *
  - EXPOSE_PK
```
public static final DataAccessFactory.Param EXPOSE_PK
```
    expose primary key columns as attributes
  - SQL_ON_BORROW
```
public static final DataAccessFactory.Param SQL_ON_BORROW
```
    SQL executed when the session begins
  - SQL_ON_RELEASE
```
public static final DataAccessFactory.Param SQL_ON_RELEASE
```
    SQL executed when the session ends
  - CALLBACK_FACTORY
```
public static final DataAccessFactory.Param CALLBACK_FACTORY
```
    JDBC callback factory
- Constructor Detail
  - JDBCDataStoreFactory
```
public JDBCDataStoreFactory()
```
- Method Detail
  - getDisplayName
```
public String getDisplayName()
```
    Description copied from interface: DataAccessFactory
    
    Name suitable for display to end user.
    A non localized display name for this data store type.
    
    Specified by:
    
    getDisplayName in interface DataAccessFactory
    
    Returns:
    
    A short name suitable for display in a user interface.
  - canProcess
```
public boolean canProcess(Map params)
```
    Default implementation verifies the Map against the Param information.
    It will ensure that:
    - params is not null
    - Everything is of the correct type (or upcovertable to the correct type without Error)
    - Required Parameters are present
    Specified by:
    
    canProcess in interface DataAccessFactory
    
    Parameters:
    
    params -
    
    Returns:
    
    true if params is in agreement with getParametersInfo and checkDBType
  - checkDBType
```
protected boolean checkDBType(Map params)
```
  - checkDBType
```
protected final boolean checkDBType(Map params,
                                    String dbtype)
```
  - createDataStore
```
public final JDBCDataStore createDataStore(Map params)
                                    throws IOException
```
    Description copied from interface: DataStoreFactorySpi
    Construct a live data source using the params specifed.
    You can think of this as setting up a connection to the back end data source.
    Magic Params: the following params are magic and are honoured by convention by the GeoServer and uDig application.
    - "user": is taken to be the user name
    - "passwd": is taken to be the password
    - "namespace": is taken to be the namespace prefix (and will be kept in sync with GeoServer namespace management.
    When we eventually move over to the use of OpperationalParam we will have to find someway to codify this convention.
    Specified by:
    
    createDataStore in interface DataAccessFactory
    
    Specified by:
    
    createDataStore in interface DataStoreFactorySpi
    
    Parameters:
    
    params - The full set of information needed to construct a live data store. Typical key values for the map include: url - location of a resource, used by file reading datasources. dbtype - the type of the database to connect to, e.g. postgis, mysql
    
    Returns:
    
    The created DataStore, 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.
  - createDataStoreInternal
```
protected JDBCDataStore createDataStoreInternal(JDBCDataStore dataStore,
                                                Map params)
                                         throws IOException
```
    Subclass hook to do additional initialization of a newly created datastore.
    Typically subclasses will want to override this method in the case where they provide additional datastore parameters, those should be processed here.
    This method is provided with an instance of the datastore. In some cases subclasses may wish to create a new instance of the datastore, for instance in order to wrap the original instance. This is supported but the new datastore must be returned from this method. If not is such the case this method should still return the original passed in.
    
    Parameters:
    
    dataStore - The newly created datastore.
    
    params - THe datastore parameters.
    
    Throws:
    
    IOException
  - createNewDataStore
```
public DataStore createNewDataStore(Map params)
                             throws IOException
```
    Specified by:
    
    createNewDataStore in interface DataStoreFactorySpi
    
    Throws:
    
    IOException
  - getParametersInfo
```
public final DataAccessFactory.Param[] getParametersInfo()
```
    Description copied from interface: DataAccessFactory
    MetaData about the required Parameters (for createDataStore).
    Interpretation of FeatureDescriptor values:
    - getDisplayName(): Gets the localized display name of this feature.
    - getName(): Gets the programmatic name of this feature (used as the key in params)
    - getShortDescription(): Gets the short description of this feature.
    This should be the same as:
```
 Object params = factory.getParameters();
 BeanInfo info = getBeanInfo( params );

 return info.getPropertyDescriptors();
 
```
    Specified by: getParametersInfo in interface DataAccessFactory Returns: Param array describing the Map for createDataStore
  setupParameters protected void setupParameters(Map parameters) Sets up the database connection parameters. Subclasses may extend, but should not override. This implementation registers the following parameters. HOST PORT DATABASE SCHEMA USER PASSWD Subclass implementation may remove any parameters from the map, or may overrwrite any parameters in the map. Parameters: parameters - Map of Param objects. isAvailable public boolean isAvailable() Determines if the datastore is available. Subclasses may with to override or extend this method. This implementation checks whether the jdbc driver class (provided by getDriverClassName() can be loaded. Specified by: isAvailable in interface DataAccessFactory Returns: true if and only if this factory has all the appropriate jars on the classpath to create DataStores. getImplementationHints public Map<RenderingHints.Key,?> getImplementationHints() Returns the implementation hints for the datastore. Subclasses may override, this implementation returns null. Specified by: getImplementationHints in interface Factory Returns: The map of hints, or an empty map if none. getDatabaseID protected abstract String getDatabaseID() Returns a string to identify the type of the database. Example: 'postgis'. getDriverClassName protected abstract String getDriverClassName() Returns the fully qualified class name of the jdbc driver. For example: org.postgresql.Driver createSQLDialect protected abstract SQLDialect createSQLDialect(JDBCDataStore dataStore) Creates the dialect that the datastore uses for communication with the underlying database. Parameters: dataStore - The datastore. createDataSource protected DataSource createDataSource(Map params, SQLDialect dialect) throws IOException Creates the datasource for the data store. This method creates a BasicDataSource instance and populates it as follows: poolPreparedStatements -> false driverClassName -> getDriverClassName() url -> 'jdbc:<getDatabaseID()>://<HOST>/<DATABASE>' username -> <USER> password -> <PASSWD> If different behaviour is needed, this method should be extended or overridden. Throws: IOException createDataSource public BasicDataSource createDataSource(Map params) throws IOException DataSource access allowing SQL use: intended to allow client code to query available schemas. This DataSource is the clients responsibility to close() when they are finished using it. Parameters: params - Map of connection parameter. Returns: DataSource for SQL use Throws: IOException getValidationQuery protected abstract String getValidationQuery() Override this to return a good validation query (a very quick one, such as one that asks the database what time is it) or return null if the factory does not support validation. Returns: getJDBCUrl protected String getJDBCUrl(Map params) throws IOException Builds up the JDBC url in a jdbc:://:/ Override if you need a different setup Parameters: params - Returns: Throws: IOException

Class JDBCDataStoreFactory

Nested Class Summary

Nested classes/interfaces inherited from interface DataAccessFactory

Field Summary

Constructor Summary

Method Summary

Methods inherited from class Object

Methods inherited from interface DataAccessFactory

Field Detail

DBTYPE

HOST

PORT

DATABASE

SCHEMA

USER

PASSWD

NAMESPACE

DATASOURCE

MAXCONN

MINCONN

VALIDATECONN

FETCHSIZE

BATCH_INSERT_SIZE

MAXWAIT

TEST_WHILE_IDLE

TIME_BETWEEN_EVICTOR_RUNS

MIN_EVICTABLE_TIME

EVICTOR_TESTS_PER_RUN

PK_METADATA_TABLE

MAX_OPEN_PREPARED_STATEMENTS

EXPOSE_PK

SQL_ON_BORROW

SQL_ON_RELEASE

CALLBACK_FACTORY

Constructor Detail

JDBCDataStoreFactory

Method Detail

getDisplayName

canProcess

checkDBType

checkDBType

createDataStore

createDataStoreInternal

createNewDataStore

getParametersInfo

setupParameters

isAvailable

getImplementationHints

getDatabaseID

getDriverClassName

createSQLDialect

createDataSource

createDataSource

getValidationQuery

getJDBCUrl