org.deegree.observation.persistence
Class ContinuousFilterConverter

java.lang.Object
  org.deegree.observation.persistence.GenericFilterConverter
      org.deegree.observation.persistence.ContinuousFilterConverter

All Implemented Interfaces:

SQLFilterConverter

public class ContinuousFilterConverter
extends GenericFilterConverter

This is a filter converter for datastores that does not store the time of each observation. The observations are stored in a fixed interval, the start time of the offering is known. The observations need a uniqe id that incerements with each new observation.

Version:

$Revision$, $Date$

Author:

Oliver Tonnhofer, last edited by: $Author$

Constructor Summary

ContinuousFilterConverter(Map<String,String> columnMap, String idField, Date begin, long interval, int firstID)

Method Summary

void	buildTimeClause(QueryBuilder q, List<TimeFilter> filters) Add time filter to the sql QueryBuilder.
Date	dateForRowID(int id) Calculates the date of the given row number.

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

buildProcedureClause, buildResultClause

Methods inherited from class java.lang.Object

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

Constructor Detail

ContinuousFilterConverter

public ContinuousFilterConverter(Map<String,String> columnMap,
                                 String idField,
                                 Date begin,
                                 long interval,
                                 int firstID)

Parameters:

dsConf -

idField - the column name of the id field

begin - the date of the first observation

firstID - the time span between two observations in ms

interval - the id of the first observation (with begin date)

Method Detail

buildTimeClause

public void buildTimeClause(QueryBuilder q,
                            List<TimeFilter> filters)

Description copied from interface: SQLFilterConverter

Add time filter to the sql QueryBuilder.

Specified by:

buildTimeClause in interface SQLFilterConverter

Overrides:

buildTimeClause in class GenericFilterConverter

Parameters:

q - the query builder

filters - a list of time filter

dateForRowID

public Date dateForRowID(int id)

Calculates the date of the given row number.

Parameters:

id - the row id

Returns:

the date