com.antelmann.db
Class EntryAnalyzer<T extends DBEntry>

java.lang.Object
  com.antelmann.math.ObjectAnalyzer<T>
      com.antelmann.db.EntryAnalyzer<T>

All Implemented Interfaces:

TimeDataParser<T>, Iterable<T>

public class EntryAnalyzer<T extends DBEntry>
extends ObjectAnalyzer<T>

provides a convenient base and several methods to easily analyze aggregated DBEntry data; the underlying data can additionally be provided as a DBClassStore.

Since:

3. August 2007, 00:10

Author:

Holger Antelmann

Constructor Summary

EntryAnalyzer()
creates an instance that simply has no data (as a cached, empty list)

EntryAnalyzer(DBClassStore<T> store)

EntryAnalyzer(DBClassStore<T> store, Filter<? super T> filter)

EntryAnalyzer(Iterable<T> data)

EntryAnalyzer(Iterable<T> data, Filter<? super T> filter)

EntryAnalyzer(ValueRetriever<Enumeration<T>> retriever)

Method Summary

protected void	clearData() clears all data, so that another data source can be set
DataMatrix<T>	createLoadedMatrix(DataParser<? super T> parser, Monitor mon)
DBEnumeration<T>	enumerate() enumerates over the data; if the data is not based on a cached Collection but by a DBClassStore, transaction handling is required accordingly.
DBClassStore<T>	getStore() may be null if this instance works off an iterable or another retriever
void	loadGrid(TimeDataGrid<T> grid, Monitor mon)
void	setData(DBClassStore<T> store)
void	setData(DBClassStore<T> store, Filter<? super T> filter)

Methods inherited from class com.antelmann.math.ObjectAnalyzer

createLoadedTimeDataGrid, createLoadedTimeDataGrid, extractCriteria, extractDate, extractNumber, getCachedData, getDateExtractor, getDateInterval, getFilter, getFilterString, getGrouping, getNumberExtractor, getValueType, iterator, setData, setData, setData, setData, setDateExtractor, setDateInterval, setFilter, setFilterString, setGrouping, setGroupingMethod, setNumberExtractor, setValueType

Methods inherited from class java.lang.Object

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

Constructor Detail

EntryAnalyzer

public EntryAnalyzer()

creates an instance that simply has no data (as a cached, empty list)

EntryAnalyzer

public EntryAnalyzer(Iterable<T> data)

EntryAnalyzer

public EntryAnalyzer(Iterable<T> data,
                     Filter<? super T> filter)

EntryAnalyzer

public EntryAnalyzer(DBClassStore<T> store)

EntryAnalyzer

public EntryAnalyzer(DBClassStore<T> store,
                     Filter<? super T> filter)

EntryAnalyzer

public EntryAnalyzer(ValueRetriever<Enumeration<T>> retriever)

Method Detail

clearData

protected void clearData()

Description copied from class: ObjectAnalyzer

clears all data, so that another data source can be set

Overrides:

clearData in class ObjectAnalyzer<T extends DBEntry>

setData

public void setData(DBClassStore<T> store)

setData

public void setData(DBClassStore<T> store,
                    Filter<? super T> filter)

getStore

public DBClassStore<T> getStore()

may be null if this instance works off an iterable or another retriever

enumerate

public DBEnumeration<T> enumerate()
                                           throws IOException

enumerates over the data; if the data is not based on a cached Collection but by a DBClassStore, transaction handling is required accordingly. If a store is present, it will used along with the filter before super is called.

Overrides:

enumerate in class ObjectAnalyzer<T extends DBEntry>

Throws:

IOException

See Also:

DBUtils.runInTransaction(Task, com.antelmann.db.DBTransaction, boolean)

createLoadedMatrix

public DataMatrix<T> createLoadedMatrix(DataParser<? super T> parser,
                                        Monitor mon)
                                                 throws IOException

Overrides:

createLoadedMatrix in class ObjectAnalyzer<T extends DBEntry>

Throws:

IOException

loadGrid

public void loadGrid(TimeDataGrid<T> grid,
                     Monitor mon)
              throws IOException

Overrides:

loadGrid in class ObjectAnalyzer<T extends DBEntry>

Throws:

IOException