Package com.google.refine.browsing.util

Class ExpressionNominalValueGrouper

java.lang.Object

com.google.refine.browsing.util.ExpressionNominalValueGrouper

All Implemented Interfaces:

RecordVisitor, RowVisitor

public class ExpressionNominalValueGrouper
extends Object
implements RowVisitor, RecordVisitor

Visit matched rows or records and group them into facet choices based on the values computed from a given expression.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ExpressionNominalValueGrouper.IndexedNominalFacetChoice

Field Summary

Fields

Modifier and Type	Field	Description
protected final int	_cellIndex
protected final String	_columnName
protected final Evaluable	_evaluable
int	blankCount
final Map<Object,ExpressionNominalValueGrouper.IndexedNominalFacetChoice>	choices
int	errorCount
protected boolean	hasBlank
protected boolean	hasError

Constructor Summary

Constructors

Constructor	Description
ExpressionNominalValueGrouper(Evaluable evaluable, String columnName, int cellIndex)

Method Summary

Modifier and Type	Method	Description
void	end(Project project)	Called after all visit() calls.
protected Object	evalRow(Project project, int rowIndex, Row row, Properties bindings)
RowEvaluable	getChoiceCountRowEvaluable()
Integer	getChoiceValueCount(Object choiceValue)
Object	getChoiceValueCountMultiple(Object value)
protected void	processValue(Object value, int index)
void	start(Project project)	Called before any visit() call.
boolean	visit(Project project, int rowIndex, Row row)
boolean	visit(Project project, Record record)
protected void	visitRow(Project project, int rowIndex, Row row, Properties bindings, int index)

Methods inherited from class java.lang.Object

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

Field Details

_evaluable

protected final Evaluable _evaluable

_columnName

protected final String _columnName

_cellIndex

protected final int _cellIndex

choices

public final Map<Object,ExpressionNominalValueGrouper.IndexedNominalFacetChoice> choices

blankCount

public int blankCount

errorCount

public int errorCount

hasBlank

protected boolean hasBlank

hasError

protected boolean hasError

Constructor Details

ExpressionNominalValueGrouper

public ExpressionNominalValueGrouper(Evaluable evaluable,
 String columnName,
 int cellIndex)

Method Details

start

public void start(Project project)

Description copied from interface: RowVisitor

Called before any visit() call.

Specified by:

start in interface RecordVisitor

Specified by:

start in interface RowVisitor

end

public void end(Project project)

Description copied from interface: RowVisitor

Called after all visit() calls.

Specified by:

end in interface RecordVisitor

Specified by:

end in interface RowVisitor

visit

public boolean visit(Project project,
 int rowIndex,
 Row row)

Specified by:

visit in interface RowVisitor

Parameters:

project - project

rowIndex - zero-based row index

row - row

Returns:

true to abort visitation early - no further visit calls will be made

visit

public boolean visit(Project project,
 Record record)

Specified by:

visit in interface RecordVisitor

visitRow

protected void visitRow(Project project,
 int rowIndex,
 Row row,
 Properties bindings,
 int index)

evalRow

protected Object evalRow(Project project,
 int rowIndex,
 Row row,
 Properties bindings)

processValue

protected void processValue(Object value,
 int index)

getChoiceCountRowEvaluable

public RowEvaluable getChoiceCountRowEvaluable()

getChoiceValueCountMultiple

public Object getChoiceValueCountMultiple(Object value)

getChoiceValueCount

public Integer getChoiceValueCount(Object choiceValue)