org.deegree.feature.persistence.postgis
Class PostGISFeatureStore

java.lang.Object
  org.deegree.feature.persistence.postgis.PostGISFeatureStore

All Implemented Interfaces:

FeatureStore, SQLFeatureStore

public class PostGISFeatureStore
extends java.lang.Object
implements SQLFeatureStore

FeatureStore implementation that uses a PostGIS/PostgreSQL database as backend.

Version:

$Revision: 27868 $, $Date: 2010-11-09 12:09:59 +0100 (Di, 09. Nov 2010) $

Author:

Markus Schneider, last edited by: $Author: mschneider $

See Also:

FeatureStore

Method Summary

FeatureStoreTransaction	acquireTransaction() Acquires transactional access to the feature store.
void	destroy() Called by the container to indicate that this FeatureStore instance is being taken out of service.
java.lang.String	getConnId() Returns the JDBC connection id.
java.lang.String[]	getDDL() Returns the SQL statements for creating the database tables.
Envelope	getEnvelope(javax.xml.namespace.QName ftName) Returns the envelope for all stored features of the given type.
LockManager	getLockManager() Returns the associated LockManager.
GMLObject	getObjectById(java.lang.String id) Retrieves the stored object with a certain id.
MappedApplicationSchema	getSchema() Returns the application schema that this FeatureStore serves.
void	init() Called by the container to indicate that this FeatureStore instance is being placed into service.
boolean	isAvailable() Returns whether the store is currently able to perform operations.
FeatureResultSet	query(Query query) Performs the given query and returns the matching features as a FeatureResultSet.
FeatureResultSet	query(Query[] queries) Performs the given queries and returns the matching features as a FeatureResultSet.
int	queryHits(Query query) Returns the number of features that are matched by the given query.
int	queryHits(Query[] queries) Returns the number of features that are matched by the given queries.

Methods inherited from class java.lang.Object

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

Method Detail

getConnId

public java.lang.String getConnId()

Description copied from interface: SQLFeatureStore

Returns the JDBC connection id.

Specified by:

getConnId in interface SQLFeatureStore

Returns:

the JDBC connection id, never null

acquireTransaction

public FeatureStoreTransaction acquireTransaction()
                                           throws FeatureStoreException

Description copied from interface: FeatureStore

Acquires transactional access to the feature store.

Specified by:

acquireTransaction in interface FeatureStore

Returns:

transaction object that allows to perform transactions operations on the datastore, never null

Throws:

FeatureStoreException - if the transactional access could not be acquired or is not implemented for this FeatureStore

destroy

public void destroy()

Description copied from interface: FeatureStore

Called by the container to indicate that this FeatureStore instance is being taken out of service.

Specified by:

destroy in interface FeatureStore

getEnvelope

public Envelope getEnvelope(javax.xml.namespace.QName ftName)
                     throws FeatureStoreException

Description copied from interface: FeatureStore

Returns the envelope for all stored features of the given type.

Specified by:

getEnvelope in interface FeatureStore

Parameters:

ftName - name of the feature type, must not be null and must be served by this store

Returns:

the envelope (using the storage CRS), or null if the feature type does not have an envelope (no geometry properties or no instances)

Throws:

FeatureStoreException

getLockManager

public LockManager getLockManager()
                           throws FeatureStoreException

Description copied from interface: FeatureStore

Returns the associated LockManager.

Specified by:

getLockManager in interface FeatureStore

Returns:

the associated LockManager instance, never null

Throws:

FeatureStoreException - if the FeatureStore does not implement locking

getObjectById

public GMLObject getObjectById(java.lang.String id)
                        throws FeatureStoreException

Description copied from interface: FeatureStore

Retrieves the stored object with a certain id.

Specified by:

getObjectById in interface FeatureStore

Parameters:

id - identifier of the object to be retrieved

Returns:

the stored object (currently either a Feature or a Geometry) or null if no object with the given id is known

Throws:

FeatureStoreException - if the query could not be performed

getSchema

public MappedApplicationSchema getSchema()

Description copied from interface: FeatureStore

Returns the application schema that this FeatureStore serves.

Specified by:

getSchema in interface FeatureStore

Returns:

the served application schema, never null

init

public void init()
          throws FeatureStoreException

Description copied from interface: FeatureStore

Called by the container to indicate that this FeatureStore instance is being placed into service.

Specified by:

init in interface FeatureStore

Throws:

FeatureStoreException - if the initialization fails

isAvailable

public boolean isAvailable()

Description copied from interface: FeatureStore

Returns whether the store is currently able to perform operations.

Specified by:

isAvailable in interface FeatureStore

Returns:

true, if the store is functional, false otherwise

query

public FeatureResultSet query(Query query)
                       throws FeatureStoreException,
                              FilterEvaluationException

Description copied from interface: FeatureStore

Performs the given query and returns the matching features as a FeatureResultSet.

Specified by:

query in interface FeatureStore

Parameters:

query - query to be performed, must not be null

Returns:

matching features, never null

Throws:

FeatureStoreException - if the query could not be performed

FilterEvaluationException - if the filter contained in the query could not be evaluated

query

public FeatureResultSet query(Query[] queries)
                       throws FeatureStoreException,
                              FilterEvaluationException

Description copied from interface: FeatureStore

Performs the given queries and returns the matching features as a FeatureResultSet.

Specified by:

query in interface FeatureStore

Parameters:

queries - queries to be performed, must not be null and contain at least one entry

Returns:

matching features, never null

Throws:

FeatureStoreException - if the query could not be performed

FilterEvaluationException - if the filter contained in the query could not be evaluated

queryHits

public int queryHits(Query query)
              throws FeatureStoreException,
                     FilterEvaluationException

Description copied from interface: FeatureStore

Returns the number of features that are matched by the given query.

Specified by:

queryHits in interface FeatureStore

Parameters:

query - query to be performed, must not be null

Returns:

number of matching featuress

Throws:

FeatureStoreException - if the query could not be performed

FilterEvaluationException - if the filter contained in the query could not be evaluated

queryHits

public int queryHits(Query[] queries)
              throws FeatureStoreException,
                     FilterEvaluationException

Description copied from interface: FeatureStore

Returns the number of features that are matched by the given queries.

Specified by:

queryHits in interface FeatureStore

Parameters:

queries - queries to be performed, must not be null and contain at least one entry

Returns:

number of matching features

Throws:

FeatureStoreException - if the query could not be performed

FilterEvaluationException - if the filter contained in the query could not be evaluated

getDDL

public java.lang.String[] getDDL()

Description copied from interface: SQLFeatureStore

Returns the SQL statements for creating the database tables.

Specified by:

getDDL in interface SQLFeatureStore

Returns:

the SQL statements for creating the database tables, never null