com.stratio.deep.utils

Class AnnotationUtils

java.lang.Object

com.stratio.deep.utils.AnnotationUtils

public final class AnnotationUtils
extends Object

Common utility methods to manipulate beans and fields annotated with @DeepEntity and @DeepField.

Field Summary

Fields

Modifier and Type	Field and Description
static Map<Class<?>,org.apache.cassandra.db.marshal.AbstractType<?>>	MAP_ABSTRACT_TYPE_CLASS_TO_ABSTRACT_TYPE Static map of associations between cassandra marshaller Class objects and their instance.
static Map<String,Class>	MAP_ABSTRACT_TYPE_CLASSNAME_TO_JAVA_TYPE Static map of associations between a cassandra marshaller fully qualified class name and the corresponding Java class.
static Map<Class,org.apache.cassandra.db.marshal.AbstractType<?>>	MAP_JAVA_TYPE_TO_ABSTRACT_TYPE Static map of associations between Class objects and the equivalent Cassandra marshaller.

Method Summary

Methods

Modifier and Type	Method and Description
static String	deepFieldName(Field field) Returns the field name as known by the datastore.
static Field[]	filterDeepFields(Class clazz) Utility method that filters out all the fields _not_ annotated with the DeepField annotation.
static Pair<Field[],Field[]>	filterKeyFields(Class clazz) Return a pair of Field[] whose left element is the array of keys fields.
static Serializable	getBeanFieldValue(IDeepType entity, Field deepField) Returns the value of the fields deepField in the instance entity of type T.
static Class<?>[]	getGenericTypes(Field field) Returns the list of generic types associated to the provided field (if any).
static boolean	isKey(DeepField field) Returns true is given field is part of the table key.

Methods inherited from class java.lang.Object

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

Field Detail

MAP_JAVA_TYPE_TO_ABSTRACT_TYPE

public static final Map<Class,org.apache.cassandra.db.marshal.AbstractType<?>> MAP_JAVA_TYPE_TO_ABSTRACT_TYPE

Static map of associations between Class objects and the equivalent Cassandra marshaller.

MAP_ABSTRACT_TYPE_CLASSNAME_TO_JAVA_TYPE

public static final Map<String,Class> MAP_ABSTRACT_TYPE_CLASSNAME_TO_JAVA_TYPE

Static map of associations between a cassandra marshaller fully qualified class name and the corresponding Java class.

MAP_ABSTRACT_TYPE_CLASS_TO_ABSTRACT_TYPE

public static final Map<Class<?>,org.apache.cassandra.db.marshal.AbstractType<?>> MAP_ABSTRACT_TYPE_CLASS_TO_ABSTRACT_TYPE

Static map of associations between cassandra marshaller Class objects and their instance.

Method Detail

deepFieldName

public static String deepFieldName(Field field)

Returns the field name as known by the datastore. If the provided field object DeepField annotation specifies the fieldName property, the value of this property will be returned, otherwise the java field name will be returned.

Parameters:

field - the Field object associated to the property for which we want to resolve the name.

Returns:

the field name.

filterDeepFields

public static Field[] filterDeepFields(Class clazz)

Utility method that filters out all the fields _not_ annotated with the DeepField annotation.

Parameters:

clazz - the Class object for which we want to resolve deep fields.

Returns:

an array of deep Field(s).

filterKeyFields

public static Pair<Field[],Field[]> filterKeyFields(Class clazz)

Return a pair of Field[] whose left element is the array of keys fields. The right element contains the array of all other non-key fields.

Parameters:

clazz - the Class object

Returns:

a pair object whose first element contains key fields, and whose second element contains all other columns.

isKey

public static boolean isKey(DeepField field)

Returns true is given field is part of the table key.

Parameters:

field - the Field object we want to process.

Returns:

true if the field is part of the cluster key or the partition key, false otherwise.

getBeanFieldValue

public static Serializable getBeanFieldValue(IDeepType entity,
                             Field deepField)

Returns the value of the fields deepField in the instance entity of type T.

Parameters:

entity - the entity to process.

deepField - the Field to process belonging to entity

Returns:

the property value.

getGenericTypes

public static Class<?>[] getGenericTypes(Field field)

Returns the list of generic types associated to the provided field (if any).

Parameters:

field - the field instance to process.

Returns:

the list of generic types associated to the provided field (if any).