com.yahoo.bard.webservice.application

Interface DimensionValueLoader

All Known Implementing Classes:

DruidDimensionValueLoader, SqlDimensionValueLoader

public interface DimensionValueLoader

The DimensionValueLoader provides a way to update dimension values.

Field Summary

Fields

Modifier and Type	Field and Description
static org.slf4j.Logger	LOG

Method Summary

Modifier and Type	Method and Description
default boolean	dimensionExistsInDataSource(Dimension dimension, DataSource dataSource) Checks if a Dimension exists in a DataSource.
Set<DataSource>	getDataSources() Gets the list of datasources to query against.
Set<Dimension>	getDimensions() Gets the list of dimensions to load.
default void	load() Start loading all dimensions.
void	query(Dimension dimension, DataSource dataSource) Queries for a specific Dimension against the given DataSource.
default void	queryDimension(Dimension dimension) Queries a specific dimension.
void	setErrorCallback(HttpErrorCallback errorCallback) Set a callback if an error occurs while querying.
void	setFailureCallback(FailureCallback failureCallback) Set a callback if an exception occurs while querying.
default void	updateDimension(Dimension dimension) Tell the dimension it's been updated.
default void	updateDimensionWithValue(Dimension dimension, DimensionRow dimensionRow) Adds dimension row values to a dimension.

Field Detail

LOG

static final org.slf4j.Logger LOG

Method Detail

dimensionExistsInDataSource

default boolean dimensionExistsInDataSource(Dimension dimension,
                                            DataSource dataSource)

Checks if a Dimension exists in a DataSource.

Parameters:

dimension - The dimension to look for in the datasource.

dataSource - The datasource to look through for the dimension.

Returns:

true if the dimension was found.

load

default void load()

Start loading all dimensions.

queryDimension

default void queryDimension(Dimension dimension)

Queries a specific dimension. This only queries against a DataSource if it's table contains the given Dimension.

Parameters:

dimension - The dimension to load values for.

query

void query(Dimension dimension,
           DataSource dataSource)

Queries for a specific Dimension against the given DataSource.

Parameters:

dimension - The dimension to load.

dataSource - The datasource to query values for.

setErrorCallback

void setErrorCallback(HttpErrorCallback errorCallback)

Set a callback if an error occurs while querying.

Parameters:

errorCallback - The callback to invoke on http errors.

setFailureCallback

void setFailureCallback(FailureCallback failureCallback)

Set a callback if an exception occurs while querying.

Parameters:

failureCallback - The callback to invoke on exceptions.

getDimensions

Set<Dimension> getDimensions()

Gets the list of dimensions to load.

Returns:

the list of dimensions.

getDataSources

Set<DataSource> getDataSources()

Gets the list of datasources to query against.

Returns:

the list of datasources.

updateDimension

default void updateDimension(Dimension dimension)

Tell the dimension it's been updated.

Parameters:

dimension - The dimension to update saying it's been loaded.

updateDimensionWithValue

default void updateDimensionWithValue(Dimension dimension,
                                      DimensionRow dimensionRow)

Adds dimension row values to a dimension.

Parameters:

dimension - The dimension to add the row to.

dimensionRow - The dimension row to be added.