Package org.hibernate.search.mapper.pojo.search.definition.binding.builtin

Class HighlightProjectionBinder

java.lang.Object

org.hibernate.search.mapper.pojo.search.definition.binding.builtin.HighlightProjectionBinder

All Implemented Interfaces:

ProjectionBinder

public final class HighlightProjectionBinder
extends Object
implements ProjectionBinder

Binds a constructor parameter to a projection to highlights, i.e. sequences of text that matched the query, extracted from the given field's value.

See Also:

SearchProjectionFactory.highlight(String), HighlightProjectionOptionsStep.highlighter(String), HighlightProjection

Method Summary

Modifier and Type	Method	Description
void	bind(ProjectionBindingContext context)	Binds a constructor parameter to a projection.
static HighlightProjectionBinder	create()	Creates a HighlightProjectionBinder to be passed to MethodParameterMappingStep.projection(ProjectionBinder).
static HighlightProjectionBinder	create(String fieldPath)	Creates a FieldProjectionBinder to be passed to MethodParameterMappingStep.projection(ProjectionBinder).
HighlightProjectionBinder	highlighter(String highlighterName)

Methods inherited from class java.lang.Object

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

Method Detail

create

public static HighlightProjectionBinder create()

Creates a HighlightProjectionBinder to be passed to MethodParameterMappingStep.projection(ProjectionBinder).

This method requires the projection constructor class to be compiled with the -parameters flag to infer the field path from the name of the constructor parameter being bound. If this compiler flag is not used, use create(String) instead and pass the field path explicitly.

Returns:

The binder.

create

public static HighlightProjectionBinder create(String fieldPath)

Creates a FieldProjectionBinder to be passed to MethodParameterMappingStep.projection(ProjectionBinder).

Parameters:

fieldPath - The path to the index field whose highlights will be extracted. When null, defaults to the name of the constructor parameter being bound, if it can be retrieved (requires the class to be compiled with the -parameters flag; otherwise a null fieldPath will lead to a failure).

Returns:

The binder.

highlighter

public HighlightProjectionBinder highlighter(String highlighterName)

Parameters:

highlighterName - The name of a highlighter defined on the query, or null to use the default highlighter.

Returns:

this, for method chaining.

See Also:

HighlightProjectionOptionsStep.highlighter(String)

bind

public void bind(ProjectionBindingContext context)

Description copied from interface: ProjectionBinder

Binds a constructor parameter to a projection.

The context passed in parameter provides various information about the constructor parameter being bound. Implementations are expected to take advantage of that information and to call one of the definition*(...) methods on the context to set the projection.

Specified by:

bind in interface ProjectionBinder

Parameters:

context - A context object providing information about the constructor parameter being bound, and expecting a call to one of its definition*(...) methods.