com.google.appengine.tools.mapreduce.impl

Class BigQueryFieldUtil

java.lang.Object

com.google.appengine.tools.mapreduce.impl.BigQueryFieldUtil

public final class BigQueryFieldUtil
extends Object

Utility class for processing Field and BigQuery data fields.

Method Summary

Methods

Modifier and Type	Method and Description
static String	getFieldDescription(Field field)
static String	getFieldMode(Field field)
static String	getFieldName(Field field)
static Set<Field>	getFieldsToSerialize(Class<?> type) Returns a set of all the non-transient, non-static fields without the annotation BigQueryIgnore.
static Type	getParameterType(ParameterizedType parameterizedType)
static Class<?>	getParameterTypeOfRepeatedField(Field field) Returns type of the parameter or component type for the repeated field depending on whether it is a collection or an array.
static boolean	isCollection(Class<?> type)
static boolean	isCollectionOrArray(Class<?> type)
static boolean	isGenericType(Type type)
static boolean	isParameterized(Type type)
static void	validateCollection(Field field) A field of type Collection must be parameterized for marshalling it into bigquery data as a raw field can lead to ambiguous bigquery table definitions.
static void	validateNestedParameterizedType(Type parameterType) Parameterized types nested more than one level cannot be determined at runtime.
static void	validateNestedRepeatedType(Class<?> parameterType, Field field) A field of type Collection cannot be marshalled into bigquery data format as parameterized types nested more than one level cannot be determined at runtime.

Methods inherited from class java.lang.Object

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

Method Detail

getFieldName

public static String getFieldName(Field field)

Parameters:

field - - Field of a class.

Returns:

BigQueryDataField annotated name. If annotation is not present then returns the name of the field.

getFieldDescription

public static String getFieldDescription(Field field)

Parameters:

field - - Field of a class.

Returns:

BigQueryDataField annotation description. Null if annotation is not present.

getFieldMode

public static String getFieldMode(Field field)

Parameters:

field - - Field of a class.

Returns:

BigQueryDataField annotation mode.

getParameterType

public static Type getParameterType(ParameterizedType parameterizedType)

Parameters:

parameterizedType -

Returns:

runtime type of the generic parameter.

isCollection

public static boolean isCollection(Class<?> type)

Parameters:

type -

Returns:

true if the type can be assigned to a Collection class

isGenericType

public static boolean isGenericType(Type type)

Parameters:

type -

Returns:

true if the field is a parameterized generic type.

isParameterized

public static boolean isParameterized(Type type)

Parameters:

type -

Returns:

true if the parameterized type had a parameter declared at compile time

isCollectionOrArray

public static boolean isCollectionOrArray(Class<?> type)

Parameters:

type -

Returns:

true if it's a collection or an array type.

getFieldsToSerialize

public static Set<Field> getFieldsToSerialize(Class<?> type)

Returns a set of all the non-transient, non-static fields without the annotation BigQueryIgnore.

validateCollection

public static void validateCollection(Field field)

A field of type Collection must be parameterized for marshalling it into bigquery data as a raw field can lead to ambiguous bigquery table definitions.

validateNestedRepeatedType

public static void validateNestedRepeatedType(Class<?> parameterType,
                              Field field)

A field of type Collection cannot be marshalled into bigquery data format as parameterized types nested more than one level cannot be determined at runtime. So cannot be marshalled.

validateNestedParameterizedType

public static void validateNestedParameterizedType(Type parameterType)

Parameterized types nested more than one level cannot be determined at runtime. So cannot be marshalled.

getParameterTypeOfRepeatedField

public static Class<?> getParameterTypeOfRepeatedField(Field field)

Returns type of the parameter or component type for the repeated field depending on whether it is a collection or an array.