org.deegree.observation.persistence.binary
Class BinarySQLDatastore

java.lang.Object
  org.deegree.observation.persistence.SQLObservationDatastore
      org.deegree.observation.persistence.simple.SimpleObservationDatastore
          org.deegree.observation.persistence.binary.BinarySQLDatastore

All Implemented Interfaces:

ObservationDatastore

public class BinarySQLDatastore
extends SimpleObservationDatastore

This datastore is able to manage data with a high sampling rate. The data is read from DB records with SQL byte arrays. The current implementation allows each record to store measurements that occurred within one second. The number of measurements per seconds and the time interval between them can be configured with the ms_per_record and number_of_records options. (e.g. if you have 10ms sampling rate: number_of_records = 100, ms_per_record=10)

Version:

$Revision: 26739 $, $Date: 2010-09-14 16:30:04 +0200 (Tue, 14 Sep 2010) $

Author:

Oliver Tonnhofer, last edited by: $Author: aionita $

Field Summary

Fields inherited from class org.deegree.observation.persistence.simple.SimpleObservationDatastore

procColumn, timeColumn

Fields inherited from class org.deegree.observation.persistence.SQLObservationDatastore

columnMap, jdbcId, optionMap, properties, tableName

Constructor Summary

BinarySQLDatastore(String jdbcId, String tableName, Map<String,String> columnMap, Map<String,String> optionMap, List<Property> properties)

Method Summary

Observation	getObservation(FilterCollection filter, Offering offering) Get measurements from the datastore.
SamplingTime	getSamplingTime() Get the time span (sampling time) of all observations in this datastore.
protected PreparedStatement	getStatement(FilterCollection filter, Collection<String> collection, Connection conn, Offering offering) Create the sql statement.

Methods inherited from class org.deegree.observation.persistence.simple.SimpleObservationDatastore

getFilterConverter, getProcedure, getPropertyMap

Methods inherited from class org.deegree.observation.persistence.SQLObservationDatastore

getJdbcId, getProperties

Methods inherited from class java.lang.Object

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

Constructor Detail

BinarySQLDatastore

public BinarySQLDatastore(String jdbcId,
                          String tableName,
                          Map<String,String> columnMap,
                          Map<String,String> optionMap,
                          List<Property> properties)

Parameters:

dsConfig -

Method Detail

getSamplingTime

public SamplingTime getSamplingTime()

Description copied from interface: ObservationDatastore

Get the time span (sampling time) of all observations in this datastore.

Specified by:

getSamplingTime in interface ObservationDatastore

Overrides:

getSamplingTime in class SimpleObservationDatastore

Returns:

the sampling time of the datastore

getObservation

public Observation getObservation(FilterCollection filter,
                                  Offering offering)
                           throws ObservationDatastoreException

Description copied from interface: ObservationDatastore

Get measurements from the datastore.

Specified by:

getObservation in interface ObservationDatastore

Overrides:

getObservation in class SimpleObservationDatastore

Returns:

the resulting measurements

Throws:

ObservationDatastoreException

getStatement

protected PreparedStatement getStatement(FilterCollection filter,
                                         Collection<String> collection,
                                         Connection conn,
                                         Offering offering)
                                  throws SQLException,
                                         FilterException

Description copied from class: SimpleObservationDatastore

Create the sql statement.

Overrides:

getStatement in class SimpleObservationDatastore

Returns:

the sql select statement with where clauses

Throws:

SQLException

FilterException