org.embl.ebi.escience.scuflui.facets
Class PropertyFetcher

java.lang.Object
  org.embl.ebi.escience.scuflui.facets.PropertyFetcher

All Implemented Interfaces:

FacetFinderSPI

public class PropertyFetcher
extends java.lang.Object
implements FacetFinderSPI

Author:

Matthew Pocock

Nested Class Summary

static class

PropertyFetcher.Closure

Nested classes/interfaces inherited from interface org.embl.ebi.escience.scuflui.spi.FacetFinderSPI

FacetFinderSPI.ColumnID

Constructor Summary

PropertyFetcher()

Method Summary

boolean	canMakeFacets(DataThing dataThing) Indicate if this facet finder can decompose this DataThing.
DataThing	getFacet(DataThing dataThing, FacetFinderSPI.ColumnID colID) Get the value associated with a particular column of a data object.
java.lang.String	getName() Get a human readable name for this facetiser.
java.util.Set	getStandardColumns(DataThing dataThing) Get a Set of columns this facet finder can use on any data.
boolean	hasColumn(FacetFinderSPI.ColumnID colID) Indicate if this facet finder can return data for this column.
FacetFinderSPI.ColumnID	newColumn(DataThing dataThing) Get a new, independant column for a data item.

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyFetcher

public PropertyFetcher()

Method Detail

canMakeFacets

public boolean canMakeFacets(DataThing dataThing)

Description copied from interface: FacetFinderSPI

Indicate if this facet finder can decompose this DataThing.

Specified by:

canMakeFacets in interface FacetFinderSPI

Parameters:

dataThing - the object to decompose

Returns:

true if it can, false otherwise

getStandardColumns

public java.util.Set getStandardColumns(DataThing dataThing)

Description copied from interface: FacetFinderSPI

Get a Set of columns this facet finder can use on any data. The returned Set should be immutable, and should not change. Users of this API should make a copy of this if they want to edit it. Calling mutators on the column ID should not affect the columns returned by previous or future invocations.

Specified by:

getStandardColumns in interface FacetFinderSPI

Parameters:

dataThing - the dataThing to get standard columns for, or null if default columns should be returned

Returns:

a Set (never null) containing the standard columns

hasColumn

public boolean hasColumn(FacetFinderSPI.ColumnID colID)

Description copied from interface: FacetFinderSPI

Indicate if this facet finder can return data for this column.

Specified by:

hasColumn in interface FacetFinderSPI

Parameters:

colID - the ColumnID identifying the column

Returns:

true if the colID is known by this facet finder, false otherwise

newColumn

public FacetFinderSPI.ColumnID newColumn(DataThing dataThing)

Description copied from interface: FacetFinderSPI

Get a new, independant column for a data item. Call this method to get a column ID that can then be customised.

Specified by:

newColumn in interface FacetFinderSPI

Parameters:

dataThing - the data item to work with

Returns:

a new column ID

getFacet

public DataThing getFacet(DataThing dataThing,
                          FacetFinderSPI.ColumnID colID)

Description copied from interface: FacetFinderSPI

Get the value associated with a particular column of a data object.

Specified by:

getFacet in interface FacetFinderSPI

Parameters:

dataThing - the object to decompose

colID - the column identifier

Returns:

a DataThing holding the value of that facet, or null if that column ID could not be fetched for dataThing

getName

public java.lang.String getName()

Description copied from interface: FacetFinderSPI

Get a human readable name for this facetiser.

Specified by:

getName in interface FacetFinderSPI

Returns:

the name