net.agmodel.physical
Class DataSetImpl

java.lang.Object
  |
  +--net.agmodel.physical.DataSetImpl

All Implemented Interfaces:

DataSet, Serializable, ServerResult

Direct Known Subclasses:

StationDataSetImpl

public class DataSetImpl

extends Object

implements DataSet, Serializable

A serializable implementation of DataSet which uses a HashMap to store Sequences.

See Also:

Serialized Form

Field Summary

protected Interval	interval
protected Duration	resolution
protected Map	sequences

Constructor Summary

DataSetImpl(Interval interval, Duration resolution)

Method Summary

void	addSequence(Object key, Sequence sequenceToAdd)
String	dumpDuration(DateFormat df, String delimiter, String rowTerminator, String timeHeader, String noData) Returns a string representation of the entire data set
Interval	getInterval() Gets the interval covered by the data set
int	getNumberOfRows() Gets the number of rows of data based on the data set's duration and resolution
int	getNumberOfSequences() Gets the number of data sequences
Duration	getResolution() Gets the resolution of the station data set
Sequence	getSequence(Object key) Gets the data, if it exists, for a particular weather element.
protected Sequence[]	getSequenceArray() Returns the sequences as a list (used in dumpDuration) May be overridden by descendant classes to order the output of dumpDuration.
String	toString() Returns a basic string representation of data set (without the actual data).

Methods inherited from class java.lang.Object

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

Field Detail

sequences

protected Map sequences

interval

protected Interval interval

resolution

protected Duration resolution

Constructor Detail

DataSetImpl

public DataSetImpl(Interval interval,
                   Duration resolution)

Method Detail

addSequence

public void addSequence(Object key,
                        Sequence sequenceToAdd)

getSequence

public Sequence getSequence(Object key)

Gets the data, if it exists, for a particular weather element.

Specified by:

getSequence in interface DataSet

Parameters:

key - an identifier for the required sequence.

Returns:

a concrete implementation of Sequence, or null if not data exists for that element.

toString

public String toString()

Returns a basic string representation of data set (without the actual data). See dumpDuration(java.text.DateFormat, java.lang.String, java.lang.String, java.lang.String, java.lang.String) for data output.

Overrides:

toString in class Object

Returns:

a string containing the station details

getInterval

public Interval getInterval()

Description copied from interface: DataSet

Gets the interval covered by the data set

Specified by:

getInterval in interface DataSet

Returns:

the interval

getResolution

public Duration getResolution()

Gets the resolution of the station data set

Specified by:

getResolution in interface DataSet

Returns:

the resolution (eg hourly or daily)

getNumberOfRows

public int getNumberOfRows()

Gets the number of rows of data based on the data set's duration and resolution

Specified by:

getNumberOfRows in interface DataSet

Returns:

the number of rows

getNumberOfSequences

public int getNumberOfSequences()

Gets the number of data sequences

Specified by:

getNumberOfSequences in interface DataSet

Returns:

the number of sequences

getSequenceArray

protected Sequence[] getSequenceArray()

Returns the sequences as a list (used in dumpDuration) May be overridden by descendant classes to order the output of dumpDuration.

Returns:

an array of sequences

dumpDuration

public String dumpDuration(DateFormat df,
                           String delimiter,
                           String rowTerminator,
                           String timeHeader,
                           String noData)

Description copied from interface: DataSet

Returns a string representation of the entire data set

Specified by:

dumpDuration in interface DataSet

Parameters:

df - a DateFormat to use for the dates and times

delimiter - the delimiter to put between the data items

rowTerminator - the string to use at the end of each row

timeHeader - a string to head the date/time column

noData - a string to show when there is no data

Returns:

a table of data, with colunn headings, and the first column being a date/time.