com.luciad.ogc.filter.model

LuciadLightspeedClass TLcdOGCSortBy

java.lang.Object

com.luciad.datamodel.TLcdDataObject

com.luciad.ogc.filter.model.TLcdOGCSortBy

All Implemented Interfaces:

ILcdDataObject, ILcdOGCSortBy, ILcdCloneable, ILcdDeepCloneable, Cloneable

public class TLcdOGCSortBy
extends TLcdDataObject
implements ILcdOGCSortBy

This class represents the <ogc:SortBy> element.

The <ogc:SortBy> element contains a list of properties that must be taken into account for sorting.

You can easily create instances using the comparing(com.luciad.ogc.filter.model.TLcdOGCPropertyName) and thenComparing(com.luciad.ogc.filter.model.TLcdOGCPropertyName) factory methods.

Example:

   TLcdOGCSortBy sortBy = comparing(property("AGE"), DESC).thenComparing(property("NAME"));
 

Note that while instances of this class are mutable, you should not modify them once in use.

Constructor Summary

Constructors

Constructor and Description
TLcdOGCSortBy() Default constructor.

Method Summary

Modifier and Type	Method and Description
void	addSortProperty(TLcdOGCSortProperty aSortProperty) Adds a sort property.
Comparator<Object>	asComparator(TLcdOGCFilterContext aFilterContext) Builds a comparator that can be used to sort collections of (OGC) features based on this TLcdOGCSortBy object.
static TLcdOGCSortBy	comparing(TLcdOGCPropertyName aPropertyName) Create a "sort by" based on the given property.
static TLcdOGCSortBy	comparing(TLcdOGCPropertyName aPropertyName, int aSortOrder) Create a "sort by" based on the given property.
boolean	equals(Object obj)
List<TLcdOGCSortProperty>	getSortProperties() Returns the list of sort properties.
TLcdOGCSortProperty	getSortProperty(int aIndex) Gets the sort property at a given position.
int	getSortPropertyCount() Gets the number of sort properties.
int	hashCode()
void	insertSortPropertyAt(TLcdOGCSortProperty aSortProperty, int aIndex) Inserts a sort property at a given position.
boolean	removeSortProperty(TLcdOGCSortProperty aSortProperty) Removes a given sort property.
TLcdOGCSortBy	thenComparing(TLcdOGCPropertyName aPropertyName) Create a new "sort by" that first sorts using this sort-by, then on the given property when two elements are considered equal by this sort-by.
TLcdOGCSortBy	thenComparing(TLcdOGCPropertyName aPropertyName, int aSortOrder) Create a new "sort by" that first sorts using this sort-by, then on the given property when two elements are considered equal by this sort-by.
String	toString()

Methods inherited from class com.luciad.datamodel.TLcdDataObject

clone, clone, getDataType, getValue, getValue, hasValue, hasValue, setValue, setValue

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

TLcdOGCSortBy

public TLcdOGCSortBy()

Default constructor.

Consider using the comparing(com.luciad.ogc.filter.model.TLcdOGCPropertyName) and thenComparing(com.luciad.ogc.filter.model.TLcdOGCPropertyName) factory methods instead of directly instantiating this.

Example:

   TLcdOGCSortBy sortBy = comparing(property("AGE"), DESC).thenComparing(property("NAME"));
 

Note that while instances of this class are mutable, you should not modify them once in use.

Method Detail

insertSortPropertyAt

public void insertSortPropertyAt(TLcdOGCSortProperty aSortProperty,
                                 int aIndex)

Inserts a sort property at a given position.

Parameters:

aSortProperty - the sort property to be inserted.

aIndex - the index of the given position.

getSortProperties

public List<TLcdOGCSortProperty> getSortProperties()

Returns the list of sort properties.

Returns:

the list of sort properties

addSortProperty

public void addSortProperty(TLcdOGCSortProperty aSortProperty)

Adds a sort property.

Parameters:

aSortProperty - the sort property to be added.

getSortPropertyCount

public int getSortPropertyCount()

Gets the number of sort properties.

Returns:

the number of sort properties.

removeSortProperty

public boolean removeSortProperty(TLcdOGCSortProperty aSortProperty)

Removes a given sort property.

Parameters:

aSortProperty - the sort property to be removed.

Returns:

true if the argument was a sort property of the list; false otherwise.

getSortProperty

public TLcdOGCSortProperty getSortProperty(int aIndex)

Gets the sort property at a given position.

Parameters:

aIndex - the index of the given position.

Returns:

the sort property.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class TLcdDataObject

comparing

public static TLcdOGCSortBy comparing(TLcdOGCPropertyName aPropertyName)

Create a "sort by" based on the given property.

The sort order is ascending.

You can sort on multiple properties by chaining with thenComparing(com.luciad.ogc.filter.model.TLcdOGCPropertyName).

Example:

   TLcdOGCSortBy sortBy = comparing(property("AGE")).thenComparing(property("NAME"));
 

Parameters:

aPropertyName - The property to sort on

Returns:

A sort-by that sorts on the given property, ascending.

Since:

2017.0

See Also:

comparing with specific sort order, thenComparing

comparing

public static TLcdOGCSortBy comparing(TLcdOGCPropertyName aPropertyName,
                                      int aSortOrder)

Create a "sort by" based on the given property.

You can sort on multiple properties by chaining with thenComparing(com.luciad.ogc.filter.model.TLcdOGCPropertyName).

Example:

   TLcdOGCSortBy sortBy = comparing(property("AGE"), DESC).thenComparing(property("NAME"));
 

Parameters:

aPropertyName - The property name to sort on

aSortOrder - The sorting order, must be ASC or DESC.

Returns:

A sort-by that sorts on the given property.

Since:

2017.0

See Also:

thenComparing

thenComparing

public final TLcdOGCSortBy thenComparing(TLcdOGCPropertyName aPropertyName)

Create a new "sort by" that first sorts using this sort-by, then on the given property when two elements are considered equal by this sort-by.

Example:

   TLcdOGCSortBy sortBy = comparing(property("AGE")).thenComparing(property("NAME"));
 

Parameters:

aPropertyName - The property to sort on (ascending) after sorting on this sort-by.

Returns:

A new sort-by.

Since:

2017.0

See Also:

thenComparing with specific sort order

thenComparing

public final TLcdOGCSortBy thenComparing(TLcdOGCPropertyName aPropertyName,
                                         int aSortOrder)

Create a new "sort by" that first sorts using this sort-by, then on the given property when two elements are considered equal by this sort-by.

Example:

   TLcdOGCSortBy sortBy = comparing(property("NAME")).thenComparing(property("AGE"), DESC);
 

Parameters:

aPropertyName - The property to sort on, if the existing sorting order is indeterminate.

Returns:

A new sort-by.

Since:

2017.0

asComparator

public final Comparator<Object> asComparator(TLcdOGCFilterContext aFilterContext)

Builds a comparator that can be used to sort collections of (OGC) features based on this TLcdOGCSortBy object.

Parameters:

aFilterContext - the context in which to create the filter. The context defines amongst others how a property is retrieved from an (OGC) feature.

Since:

2017.0