com.davisor.data.stream
Class PivotDataStream

java.lang.Object
  com.davisor.data.VoidData
      com.davisor.data.stream.IteratorDataStream
          com.davisor.data.stream.PivotDataStream

All Implemented Interfaces:

Data, DataStream

public class PivotDataStream

extends IteratorDataStream

PivotDataStream represents a data stream that has the processed results of PivotDataSource. The elements in the stream are DataValues.

Since:

JDK1.2

Field Summary

static boolean	DEBUG
protected java.util.TreeSet	M_allCategoryLabels All category labels (not including possible null one).
protected java.util.TreeMap	M_allSeriesNames All series names (not including possible null one).
protected java.lang.Boolean	M_nullCategoryLabel Has there been a null category label (defaults to false).
protected java.util.HashMap	M_nullSeriesName Values for null series name (may be null).
protected java.lang.String	M_seriesColumnId Base id for series.
protected Type	M_seriesValueType Type for series values.
protected java.lang.String	SERIES Default name for series.

Fields inherited from class com.davisor.data.stream.IteratorDataStream

M_hasNext, M_index, M_iterator, M_metaData, M_nextData

Fields inherited from class com.davisor.data.VoidData

M_type

Fields inherited from interface com.davisor.data.stream.DataStream

INITIAL_INDEX

Constructor Summary

PivotDataStream(java.util.TreeMap allSeriesNames, java.util.TreeSet allCategoryLabels, java.util.HashMap nullSeriesName, java.lang.Boolean nullCategoryLabel, Type seriesValueType, java.lang.String seriesColumnId)
Creates a data stream from the given data structures.

Methods inherited from class com.davisor.data.stream.IteratorDataStream

close, getIndex, hasNext, init, next, toString

Methods inherited from class com.davisor.data.VoidData

equals, getDataValue, getType, hashCode, setType

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.davisor.data.Data

getType

Field Detail

DEBUG

public static final boolean DEBUG

See Also:

Constant Field Values

M_allSeriesNames

protected java.util.TreeMap M_allSeriesNames

All series names (not including possible null one).

M_allCategoryLabels

protected java.util.TreeSet M_allCategoryLabels

All category labels (not including possible null one).

M_nullSeriesName

protected java.util.HashMap M_nullSeriesName

Values for null series name (may be null).

M_nullCategoryLabel

protected java.lang.Boolean M_nullCategoryLabel

Has there been a null category label (defaults to false).

M_seriesValueType

protected Type M_seriesValueType

Type for series values.

M_seriesColumnId

protected java.lang.String M_seriesColumnId

Base id for series.

SERIES

protected java.lang.String SERIES

Default name for series.

Constructor Detail

PivotDataStream

public PivotDataStream(java.util.TreeMap allSeriesNames,
                       java.util.TreeSet allCategoryLabels,
                       java.util.HashMap nullSeriesName,
                       java.lang.Boolean nullCategoryLabel,
                       Type seriesValueType,
                       java.lang.String seriesColumnId)
                throws InvalidDataException

Creates a data stream from the given data structures. At least one series name must be given and at least one category label must be given. Null series name counts as a series name. The existence of null category label counts as a category label.

The type for series values is needed because all values might be null. In that case, determining correct type for values is not possible.

Keys in the allSeriesNames are assumed to be DataValues and values are assumed to be HashMaps. Values in this HashMap as in the HashMap of nullSeriesName are assumed to be DataValues. Keys in allCategoryLabels are assumed to be DataValues.

Parameters:

allSeriesNames - Series names (not including possible null one).

allCategoryLabels - Category labels(not including possible null one).

nullSeriesName - Values for null series name.

nullCategoryLabel - Has there been a null category label.

seriesValueType - Type for series values.

seriesColumnId - Base id for series (may be null).

Throws:

InvalidDataException - If the data does not fulfill expectations.