com.technia.tvc.core.db.table.evaluator

Class DefaultDataHandler

java.lang.Object

com.technia.tvc.core.db.table.evaluator.DefaultDataHandler

All Implemented Interfaces:

DataHandler

public class DefaultDataHandler
extends java.lang.Object
implements DataHandler

Default implementation of the DataHandler interface.

Since:

5.1.3

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DENIED
static DefaultDataHandler	INSTANCE The singleton instance

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DefaultDataHandler()

Method Summary

Modifier and Type	Method and Description
Cell	createCell(Column column, EvaluatedData data) Create the cell
protected Cell	createCellImpl(Column col, EvaluatedData data, int dataType) Creates the cell without populating the cell with values.
protected java.util.Iterator<java.lang.String>	getAlternateOids(Column column, EvaluatedData data) Returns a list of alternate object IDs.
protected java.util.Iterator<java.lang.String>	getAlternateOidsModifyAccess(Column column, EvaluatedData data)
protected java.util.Iterator<java.lang.String>	getAlternatePolicies(Column column, EvaluatedData data) Returns a list of alternate policy.
protected java.util.Iterator<java.lang.String>	getAlternateTypes(Column column, EvaluatedData data) Returns a list of alternate types.
protected java.lang.String	getCellEditableExpressionStatement(Column column)
protected java.lang.String	getCellShowableExpressionStatement(Column column)
protected int	getDataType(Column column, EvaluatedData data) Returns the data type for the current column.
static DataHandler	getInstance() Returns the default DataHandler instance.
protected java.util.Iterator<java.lang.String>	getSelectValues(Column column, SelectedData data, java.lang.String statement)
protected Updater	getUpdater() Returns the updater instance, which will be used when updating a cell.
protected java.util.Iterator<java.lang.String>	getValues(Column column, EvaluatedData data) Default way to obtain the selected values for the current column.
protected java.util.Iterator<java.lang.String>	getValuesForExpression(Column column, EvaluatedData data, java.lang.String expression)
protected void	internalAddCellValues(Cell cell, java.util.Iterator<java.lang.String> cellValues, java.util.Iterator<java.lang.String> alternateOids, java.util.Iterator<java.lang.String> alternateTypes) Add cell values to cell.
protected void	internalAddCellValues(Cell cell, java.util.Iterator<java.lang.String> cellValues, java.util.Iterator<java.lang.String> alternateOids, java.util.Iterator<java.lang.String> alternateTypes, java.util.Iterator<java.lang.String> alternateModifyAccess) Add cell values to cell.
protected void	internalAddCellValues(Cell cell, java.util.Iterator<java.lang.String> cellValues, java.util.Iterator<java.lang.String> alternateOids, java.util.Iterator<java.lang.String> alternateTypes, java.util.Iterator<java.lang.String> alternateModifyAccess, java.util.Iterator<java.lang.String> alternatePolicies) Add cell values to cell.
protected boolean	isEditable(Column column, EvaluatedData data, int dataType) Determines whether or not the cell that is being created should be editable or not.
protected boolean	isSatisfied(Column column, java.lang.String statement, EvaluatedData data) Checks if a statement were evaluated to true.
void	populateCell(Cell cell, EvaluatedData data) Populates the cell
protected void	populateImpl(Cell cell, EvaluatedData data)
void	prepareEvaluation(Column column, EvaluationInput input) This method is invoked by the Evaluator as a first step in the evaluation process.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final DefaultDataHandler INSTANCE

The singleton instance

DENIED

public static final java.lang.String DENIED

See Also:

Constant Field Values

Constructor Detail

DefaultDataHandler

protected DefaultDataHandler()

Method Detail

getInstance

public static DataHandler getInstance()

Returns the default DataHandler instance.

Returns:

Returns the default DataHandler instance.

Since:

6.2.1

prepareEvaluation

public void prepareEvaluation(Column column,
                              EvaluationInput input)

Description copied from interface: DataHandler

This method is invoked by the Evaluator as a first step in the evaluation process.

The purpose is to allow to add the needed select statements and/or JPO programs, which are needed to be able to create the cells later on in the evaluation process.

Specified by:

prepareEvaluation in interface DataHandler

Parameters:

column - The current column

input - The evaluation input

createCell

public Cell createCell(Column column,
                       EvaluatedData data)

Create the cell

Specified by:

createCell in interface DataHandler

Parameters:

column - The column

data - The evaluated data

Returns:

The created cell

See Also:

Cell

populateCell

public void populateCell(Cell cell,
                         EvaluatedData data)

Populates the cell

Specified by:

populateCell in interface DataHandler

Parameters:

cell - The cell

data - The evaluated data

populateImpl

protected void populateImpl(Cell cell,
                            EvaluatedData data)

internalAddCellValues

protected void internalAddCellValues(Cell cell,
                                     java.util.Iterator<java.lang.String> cellValues,
                                     java.util.Iterator<java.lang.String> alternateOids,
                                     java.util.Iterator<java.lang.String> alternateTypes)

Add cell values to cell.

internalAddCellValues

protected void internalAddCellValues(Cell cell,
                                     java.util.Iterator<java.lang.String> cellValues,
                                     java.util.Iterator<java.lang.String> alternateOids,
                                     java.util.Iterator<java.lang.String> alternateTypes,
                                     java.util.Iterator<java.lang.String> alternateModifyAccess)

Add cell values to cell.

internalAddCellValues

protected void internalAddCellValues(Cell cell,
                                     java.util.Iterator<java.lang.String> cellValues,
                                     java.util.Iterator<java.lang.String> alternateOids,
                                     java.util.Iterator<java.lang.String> alternateTypes,
                                     java.util.Iterator<java.lang.String> alternateModifyAccess,
                                     java.util.Iterator<java.lang.String> alternatePolicies)

Add cell values to cell.

createCellImpl

protected Cell createCellImpl(Column col,
                              EvaluatedData data,
                              int dataType)

Creates the cell without populating the cell with values.

Parameters:

col - The current column.

data - The evaluated data

dataType - The data type

Returns:

The created cell

Throws:

java.lang.IllegalArgumentException - If the data type is unknown.

getDataType

protected int getDataType(Column column,
                          EvaluatedData data)

Returns the data type for the current column.

getValues

protected java.util.Iterator<java.lang.String> getValues(Column column,
                                                         EvaluatedData data)

Default way to obtain the selected values for the current column.

getUpdater

protected Updater getUpdater()

Returns the updater instance, which will be used when updating a cell. This method returns the DefaultUpdater.INSTANCE.

getAlternateOids

protected java.util.Iterator<java.lang.String> getAlternateOids(Column column,
                                                                EvaluatedData data)

Returns a list of alternate object IDs.

Parameters:

data - The data

getAlternateOidsModifyAccess

protected java.util.Iterator<java.lang.String> getAlternateOidsModifyAccess(Column column,
                                                                            EvaluatedData data)

getAlternateTypes

protected java.util.Iterator<java.lang.String> getAlternateTypes(Column column,
                                                                 EvaluatedData data)

Returns a list of alternate types.

Parameters:

column - The column

data - The data

getAlternatePolicies

protected java.util.Iterator<java.lang.String> getAlternatePolicies(Column column,
                                                                    EvaluatedData data)

Returns a list of alternate policy.

Parameters:

column - The column

data - The data

getValuesForExpression

protected java.util.Iterator<java.lang.String> getValuesForExpression(Column column,
                                                                      EvaluatedData data,
                                                                      java.lang.String expression)

getSelectValues

protected java.util.Iterator<java.lang.String> getSelectValues(Column column,
                                                               SelectedData data,
                                                               java.lang.String statement)

isEditable

protected boolean isEditable(Column column,
                             EvaluatedData data,
                             int dataType)

Determines whether or not the cell that is being created should be editable or not.

Parameters:

data -

dataType -

Returns:

True if the user has access

getCellShowableExpressionStatement

protected java.lang.String getCellShowableExpressionStatement(Column column)

Parameters:

column - The columns being evaluated.

Returns:

Returns the select statement that should be used to evaluate the expression.

Since:

6.0.0

getCellEditableExpressionStatement

protected java.lang.String getCellEditableExpressionStatement(Column column)

Parameters:

column - The columns being evaluated.

Returns:

Returns the select statement that should be used to evaluate the expression.

Since:

6.0.0

isSatisfied

protected boolean isSatisfied(Column column,
                              java.lang.String statement,
                              EvaluatedData data)

Checks if a statement were evaluated to true. IF the statement is null, true is returned since we then assume that the statement never needed to be evaluated.

Parameters:

column - The column

statement - The statement

data - The evaluated data.

Returns:

True if a statement were evaluated to true or no such statement were used.

Since:

6.0.0