luciad::AttributeResolver Class Reference

Concrete implementation of the luciad::IAttributeResolver. More...

#include <luciad/layers/styles/expressions/IAttributeResolver.h>

Inheritance diagram for luciad::AttributeResolver:

Public Member Functions
AttributeValue	resolve (const Feature &feature) override
	Resolves the attribute value for the provided feature. More...
Public Member Functions inherited from luciad::IAttributeResolver
virtual	~IAttributeResolver ()=default
virtual AttributeValue	resolve (const Feature &feature)=0
	Resolves the attribute value for the provided feature. More...

Static Public Member Functions
static std::shared_ptr< IAttributeResolver >	create (DataPropertyPath propertyPath, double defaultValue)
	Creates an attribute resolver that retrieves a given property from the feature and returns it as attribute value. More...
static std::shared_ptr< IAttributeResolver >	create (std::string propertyName, double defaultValue)
	Creates an attribute resolver that retrieves a given property from the feature and returns it as attribute value. More...
Static Public Member Functions inherited from luciad::IAttributeResolver
static std::shared_ptr< IAttributeResolver >	create (std::function< AttributeValue(const Feature &)> resolverFn)
	Creates an attribute resolver that delegates the retrieval or computation of the attribute value to a given function. More...

Detailed Description

Concrete implementation of the luciad::IAttributeResolver.

You can provide attribute resolvers when creating attribute style expressions using luciad::StyleExpressionFactory::doubleAttribute, luciad::StyleExpressionFactory::colorAttribute or luciad::StyleExpressionFactory::coordinateAttribute.

Since

2025.0

Member Function Documentation

create() [1/2]

static std::shared_ptr< IAttributeResolver > luciad::AttributeResolver::create ( DataPropertyPath  propertyPath, double  defaultValue  )

static

Creates an attribute resolver that retrieves a given property from the feature and returns it as attribute value.

The property must be of one of the following types: int32_t, int64_t, float, double. The resulting attribute value will be of type double.

Parameters

propertyPath	the path to the property within the feature.
defaultValue	default value returned by the resolver if the property is not present.

Returns

The attribute resolver.

create() [2/2]

static std::shared_ptr< IAttributeResolver > luciad::AttributeResolver::create ( std::string  propertyName, double  defaultValue  )

static

Creates an attribute resolver that retrieves a given property from the feature and returns it as attribute value.

The property must be of one of the following types: int32_t, int64_t, float, double. The resulting attribute value will be of type double.

Parameters

propertyName	name of the property within the feature.
defaultValue	default value returned by the resolver if the property is not present.

Returns

the attribute resolver.

resolve()

AttributeValue luciad::AttributeResolver::resolve ( const Feature &  feature )

overridevirtual

Resolves the attribute value for the provided feature.

Parameters

feature

the feature for which the attribute value should be resolved.

Returns

the attribute value for the given feature.

Implements luciad::IAttributeResolver.