org.bitbucket.gt_tech.spring.data.querydsl.value.operators

Class ExpressionProviderFactory

java.lang.Object

org.bitbucket.gt_tech.spring.data.querydsl.value.operators.ExpressionProviderFactory

public final class ExpressionProviderFactory
extends Object

Main entry point for library consumers. Factory class provides access to appropriate ExpressionProvider based on provided Path type.

Author:

gt_tech

Constructor Summary

Constructors

Constructor and Description
ExpressionProviderFactory()

Method Summary

Modifier and Type	Method and Description
static Optional<String>	findAlias(com.querydsl.core.types.Path path)
static Optional<com.querydsl.core.types.Predicate>	getPredicate(com.querydsl.core.types.Path path, Object value) Create a predicate based on implementation specific logic's processing of supplied value(s).
static Optional<ExpressionProvider>	getProvider(com.querydsl.core.types.Path path) Returns an Optional of ExpressionProvider if available for the provided Path instance.
static boolean	isSupportsUnTypedValues()
static void	registerAlias(com.querydsl.core.types.Path path, String alias) Method registers the new alias for given Path.
static void	setSupportsUnTypedValues(boolean supportsUnTypedValues) Sets whether experimental features are turned on, implying that untyped values are going to be made available to ExpressionProvider for non-string paths.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionProviderFactory

public ExpressionProviderFactory()

Method Detail

getProvider

public static Optional<ExpressionProvider> getProvider(com.querydsl.core.types.Path path)

Returns an Optional of ExpressionProvider if available for the provided Path instance.

Parameters:

path - Path for which ExpressionProvider is to be returned.

Returns:

Optional containing ExpressionProvider if available or else an empty optional.

getPredicate

public static Optional<com.querydsl.core.types.Predicate> getPredicate(com.querydsl.core.types.Path path,
                                                                       Object value)

Create a predicate based on implementation specific logic's processing of supplied value(s).

Parameters:

path - Path path

value - Input value(s) (Must not be Optional, can be a primitive or collection

Returns:

Optional of Predicate based on provided value.

registerAlias

public static void registerAlias(com.querydsl.core.types.Path path,
                                 String alias)

Method registers the new alias for given Path. It is assumed that QuerydslBindings.PathBinder available from QuerydslBindings is also updated with new alias prior to registering here.

Parameters:

path - Path on which alias is applied

alias - String alias value for supplied path

findAlias

public static Optional<String> findAlias(com.querydsl.core.types.Path path)

Parameters:

path - Path for which alias to be looked up from local registry.

Returns:

Optional of alias if available, otherwise empty Optional

isSupportsUnTypedValues

public static boolean isSupportsUnTypedValues()

Returns:

true when experimental features are turned on, implying that untyped values are going to be made available to ExpressionProvider for non-string paths, false is returned if experimental features are disabled

setSupportsUnTypedValues

public static void setSupportsUnTypedValues(boolean supportsUnTypedValues)

Sets whether experimental features are turned on, implying that untyped values are going to be made available to ExpressionProvider for non-string paths.

Parameters:

supportsUnTypedValues - Boolean indicating status of support of untyped values (aka. experimental features)