Package org.apache.beam.sdk.schemas.utils

Class JavaBeanUtils

java.lang.Object

org.apache.beam.sdk.schemas.utils.JavaBeanUtils

public class JavaBeanUtils
extends Object

A set of utilities to generate getter and setter classes for JavaBean objects.

Field Summary

Fields

Modifier and Type	Field	Description
static final Map<ReflectUtils.TypeDescriptorWithSchema<?>,SchemaUserTypeCreator>	CACHED_CREATORS
static final String	GETTER_WITH_NULL_METHOD_ERROR
static final String	SETTER_WITH_NULL_METHOD_ERROR

Constructor Summary

Constructors

Constructor	Description
JavaBeanUtils()

Method Summary

Modifier and Type	Method	Description
static <T, K extends Comparable<? super K>> Comparator<T>	comparingNullFirst(Function<? super T,? extends @Nullable K> keyExtractor)
static <T> SchemaUserTypeCreator	createConstructorCreator(Class<T> clazz, Constructor<T> constructor, Schema schema, List<FieldValueTypeInformation> types, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)
static <ObjectT extends @NonNull Object, ValueT> FieldValueGetter<ObjectT,ValueT>	createGetter(FieldValueTypeInformation typeInformation, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)
static <ObjectT> FieldValueHaver<ObjectT>	createHaver(Class<ObjectT> clazz, Method hasMethod)
static <ObjectT, ValueT> FieldValueSetter<ObjectT,ValueT>	createSetter(FieldValueTypeInformation typeInformation, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)
static <T> SchemaUserTypeCreator	createStaticCreator(Class<T> clazz, Method creator, Schema schema, List<FieldValueTypeInformation> types, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)
static SchemaUserTypeCreator	getConstructorCreator(TypeDescriptor<?> typeDescriptor, Constructor constructor, Schema schema, FieldValueTypeSupplier fieldValueTypeSupplier, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)
static List<FieldValueTypeInformation>	getFieldTypes(TypeDescriptor<?> typeDescriptor, Schema schema, FieldValueTypeSupplier fieldValueTypeSupplier)
static <T> List<FieldValueGetter<@NonNull T,Object>>	getGetters(TypeDescriptor<T> typeDescriptor, Schema schema, FieldValueTypeSupplier fieldValueTypeSupplier, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)	Return the list of FieldValueGetters for a Java Bean class
static List<FieldValueSetter>	getSetters(TypeDescriptor<?> typeDescriptor, Schema schema, FieldValueTypeSupplier fieldValueTypeSupplier, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)	Return the list of FieldValueSetters for a Java Bean class
static SchemaUserTypeCreator	getStaticCreator(TypeDescriptor<?> typeDescriptor, Method creator, Schema schema, FieldValueTypeSupplier fieldValueTypeSupplier, ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)
static Schema	schemaFromJavaBeanClass(TypeDescriptor<?> typeDescriptor, FieldValueTypeSupplier fieldValueTypeSupplier)	Create a Schema for a Java Bean class.
static void	validateJavaBean(List<FieldValueTypeInformation> getters, List<FieldValueTypeInformation> setters, Schema schema)

Methods inherited from class java.lang.Object

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

Field Details

GETTER_WITH_NULL_METHOD_ERROR

public static final String GETTER_WITH_NULL_METHOD_ERROR

SETTER_WITH_NULL_METHOD_ERROR

public static final String SETTER_WITH_NULL_METHOD_ERROR

CACHED_CREATORS

public static final Map<ReflectUtils.TypeDescriptorWithSchema<?>,SchemaUserTypeCreator> CACHED_CREATORS

Constructor Details

JavaBeanUtils

public JavaBeanUtils()

Method Details

schemaFromJavaBeanClass

public static Schema schemaFromJavaBeanClass(TypeDescriptor<?> typeDescriptor,
 FieldValueTypeSupplier fieldValueTypeSupplier)

Create a Schema for a Java Bean class.

validateJavaBean

public static void validateJavaBean(List<FieldValueTypeInformation> getters,
 List<FieldValueTypeInformation> setters,
 Schema schema)

getFieldTypes

public static List<FieldValueTypeInformation> getFieldTypes(TypeDescriptor<?> typeDescriptor,
 Schema schema,
 FieldValueTypeSupplier fieldValueTypeSupplier)

getGetters

public static <T>
List<FieldValueGetter<@NonNull T,Object>> getGetters(TypeDescriptor<T> typeDescriptor,
 Schema schema,
 FieldValueTypeSupplier fieldValueTypeSupplier,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

Return the list of FieldValueGetters for a Java Bean class

The returned list is ordered by the order of fields in the schema.

createGetter

public static <ObjectT extends @NonNull Object,
ValueT>
FieldValueGetter<ObjectT,ValueT> createGetter(FieldValueTypeInformation typeInformation,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

getSetters

public static List<FieldValueSetter> getSetters(TypeDescriptor<?> typeDescriptor,
 Schema schema,
 FieldValueTypeSupplier fieldValueTypeSupplier,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

Return the list of FieldValueSetters for a Java Bean class

The returned list is ordered by the order of fields in the schema.

createSetter

public static <ObjectT,
ValueT>
FieldValueSetter<ObjectT,ValueT> createSetter(FieldValueTypeInformation typeInformation,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

createHaver

public static <ObjectT> FieldValueHaver<ObjectT> createHaver(Class<ObjectT> clazz,
 Method hasMethod)

getConstructorCreator

public static SchemaUserTypeCreator getConstructorCreator(TypeDescriptor<?> typeDescriptor,
 Constructor constructor,
 Schema schema,
 FieldValueTypeSupplier fieldValueTypeSupplier,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

createConstructorCreator

public static <T> SchemaUserTypeCreator createConstructorCreator(Class<T> clazz,
 Constructor<T> constructor,
 Schema schema,
 List<FieldValueTypeInformation> types,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

getStaticCreator

public static SchemaUserTypeCreator getStaticCreator(TypeDescriptor<?> typeDescriptor,
 Method creator,
 Schema schema,
 FieldValueTypeSupplier fieldValueTypeSupplier,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

createStaticCreator

public static <T> SchemaUserTypeCreator createStaticCreator(Class<T> clazz,
 Method creator,
 Schema schema,
 List<FieldValueTypeInformation> types,
 ByteBuddyUtils.TypeConversionsFactory typeConversionsFactory)

comparingNullFirst

public static <T,
K extends Comparable<? super K>>
Comparator<T> comparingNullFirst(Function<? super T,? extends @Nullable K> keyExtractor)