Package ch.tocco.nice2.reporting.impl.action.export.column

Class EntityExportColumn

java.lang.Object

ch.tocco.nice2.reporting.impl.action.export.column.AbstractExportColumn

ch.tocco.nice2.reporting.impl.action.export.column.EntityExportColumn

All Implemented Interfaces:

ExportColumn

public class EntityExportColumn
extends AbstractExportColumn

Column that points to a relation returns the default display of the referenced entity.

Nested Class Summary

Nested classes/interfaces inherited from interface ch.tocco.nice2.reporting.api.action.export.ExportColumn

ExportColumn.IndexRegistry

Field Summary

Fields inherited from class ch.tocco.nice2.reporting.impl.action.export.column.AbstractExportColumn

isToMany, label, path

Constructor Summary

Constructors

Constructor	Description
EntityExportColumn(Path path, String label, boolean isToMany, PersistenceService persistenceService, int displayPartitionSize)

Method Summary

Modifier and Type	Method	Description
protected String	evaluateStringValue(Object value)
Optional<TypedValue<?>>	getTypedValue(Object[] row, ExportColumn.IndexRegistry indexRegistry)
void	initialize(List<Object[]> allRows, ExportColumn.IndexRegistry indexRegistry)	Collect keys to retrieve and cache multiple entities in one query (during evaluateStringValue(Object)).

Methods inherited from class ch.tocco.nice2.reporting.impl.action.export.column.AbstractExportColumn

getImportPath, getLabel, getQueryPath, getValueAsString

Methods inherited from class java.lang.Object

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

Constructor Details

EntityExportColumn

public EntityExportColumn(Path path,
 String label,
 boolean isToMany,
 PersistenceService persistenceService,
 int displayPartitionSize)

Method Details

initialize

public void initialize(List<Object[]> allRows,
 ExportColumn.IndexRegistry indexRegistry)

Collect keys to retrieve and cache multiple entities in one query (during evaluateStringValue(Object)). It's faster in one separate query than including it in the main query: If a lot of entity paths are exported, the selected columns list becomes massive, and the query becomes very slow. Note that this method called multiple times if big amounts of data are exported (once for every partition of rows).

getTypedValue

public Optional<TypedValue<?>> getTypedValue(Object[] row,
 ExportColumn.IndexRegistry indexRegistry)

evaluateStringValue

protected String evaluateStringValue(Object value)

Specified by:

evaluateStringValue in class AbstractExportColumn