net.sf.reportengine.core.steps

Class FlatReportExtractTotalsDataInitStep

java.lang.Object

net.sf.reportengine.core.algorithm.steps.AbstractInitStep<U>

net.sf.reportengine.core.steps.AbstractReportInitStep<ArrayList<Integer>>

net.sf.reportengine.core.steps.FlatReportExtractTotalsDataInitStep

All Implemented Interfaces:

AlgorithmInitStep<ArrayList<Integer>>

Direct Known Subclasses:

IntermedReportExtractTotalsDataInitStep

public class FlatReportExtractTotalsDataInitStep
extends AbstractReportInitStep<ArrayList<Integer>>

extracts some useful data to be used by the next steps in the report. 1.The distribution of calculators among data columns this step constructs the distribution of calculators array which keeps track of the distribution of calculators in the dataColumns array. For example: We have a report with 6 data columns but only 3 of them have calculators (let's say the 2nd and the 4th and the 5th) In order to be able to retrieve the right calculator value for a given dataColumn index ( as set in the configuration of the report) we will fill this array with array index: 0 1 2 3 4 5 array value: NO_CALCULATOR 0 NO_CALCULATOR 1 2 NO_CALCULATOR Next time when we have the data column index and we need the result of the calculator (in a specific row of the matrix) we will call calculatorsDistributionInDataColumnsArray[dataColumIndex] and we will get the index of the column in the calculator matrix

Since:

0.4

Author:

dragos balan (dragos dot balan at gmail dot com)

Field Summary

Fields

Modifier and Type	Field and Description
static Integer	NO_CALCULATOR_ON_THIS_POSITION

Constructor Summary

Constructors

Constructor and Description
FlatReportExtractTotalsDataInitStep()

Method Summary

Modifier and Type	Method and Description
StepResult<ArrayList<Integer>>	init(StepInput stepInput) this method is called only once for a report and represents the construction step where you can define the keys and values used inside the execute method.

Methods inherited from class net.sf.reportengine.core.steps.AbstractReportInitStep

getDataColumns, getDataColumnsLength, getGroupColumns, getGroupColumnsLength, getReportInput, getShowGrandTotal, getShowTotals

Methods inherited from class java.lang.Object

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

Field Detail

NO_CALCULATOR_ON_THIS_POSITION

public static final Integer NO_CALCULATOR_ON_THIS_POSITION

Constructor Detail

FlatReportExtractTotalsDataInitStep

public FlatReportExtractTotalsDataInitStep()

Method Detail

init

public StepResult<ArrayList<Integer>> init(StepInput stepInput)

Description copied from interface: AlgorithmInitStep

this method is called only once for a report and represents the construction step where you can define the keys and values used inside the execute method. Warning: this is the only place where you can add keys to the report context