com.sap.cloud.sdk.datamodel.odatav4.core

Class VdmObject<ObjectT>

java.lang.Object

com.sap.cloud.sdk.datamodel.odatav4.core.VdmObject<ObjectT>

Type Parameters:

ObjectT - The type of the implementing object.

Direct Known Subclasses:

VdmComplex, VdmEntity

@Beta
public abstract class VdmObject<ObjectT>
extends Object

Superclass of all entities which contains common elements such as a generic representation of custom fields.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,Object>	changedOriginalFields A mapping of the OData field name to the original value.
static String	ODATA_TYPE_ANNOTATION The OData V4 JSON key to access an entity EDM type definition.
static String	ODATA_VERSION_ANNOTATION The OData V4 JSON key to access an entity version identifier.

Constructor Summary

Constructors

Constructor and Description
VdmObject()

Method Summary

Modifier and Type	Method and Description
protected boolean	canEqual(Object other)
boolean	equals(Object o)
protected void	fromMap(Map<String,Object> values) Read entity data from generic map.
Map<String,String>	getAnnotationProperties()
Map<String,Object>	getChangedFields() Returns map of all fields which have been changed on this entity along with their updated values.
<FieldT> FieldT	getCustomField(SimpleProperty<ObjectT> customField) This method allows for retrieval of custom fields that are added to the underlying OData services.
<FieldT> FieldT	getCustomField(String customFieldName) This method allows for retrieval of custom fields that are added to the underlying OData services.
Set<String>	getCustomFieldNames()
Map<String,Object>	getCustomFields()
protected ODataEntityKey	getKey()
abstract String	getOdataType()
protected Set<String>	getSetOfCustomFields() Get the custom field names.
protected Set<String>	getSetOfFields() Get the field names.
protected Set<String>	getSetOfNavigationProperties() Get navigation property names as set.
abstract Class<ObjectT>	getType()
boolean	hasCustomField(SimpleProperty<ObjectT> customField) Checks whether this object contains a value for the given custom field.
boolean	hasCustomField(String customFieldName) Checks whether this object contains a custom field with the given name.
int	hashCode()
protected void	rememberChangedField(String fieldName, Object valueBeforeChange) Remembers the original value of a changed field.
void	resetChangedFields() Resets the map of all fields which have been changed on this entity.
<FieldT> void	setCustomField(SimpleProperty<ObjectT> customField, FieldT value) Sets the value of a single custom field.
void	setCustomField(String customFieldName, Object value) Sets the value of a single custom field.
protected Map<String,Object>	toMap() Translate the entity data to key-value map.
protected Map<String,Object>	toMapOfCustomFields() Get the custom fields as value map.
protected Map<String,Object>	toMapOfFields() Get all fields as map.
protected Map<String,Object>	toMapOfNavigationProperties() Get navigation properties as map.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ODATA_TYPE_ANNOTATION

public static final String ODATA_TYPE_ANNOTATION

The OData V4 JSON key to access an entity EDM type definition.

See Also:

Constant Field Values

ODATA_VERSION_ANNOTATION

public static final String ODATA_VERSION_ANNOTATION

The OData V4 JSON key to access an entity version identifier.

See Also:

Constant Field Values

changedOriginalFields

@Nonnull
protected final transient Map<String,Object> changedOriginalFields

A mapping of the OData field name to the original value.

This should be updated via rememberChangedField(String, Object) on every set call of a property.

Constructor Detail

VdmObject

public VdmObject()

Method Detail

getCustomFieldNames

@Nonnull
public Set<String> getCustomFieldNames()

Returns:

The names of the custom fields of this object.

getCustomFields

@Nonnull
public Map<String,Object> getCustomFields()

Returns:

All of the names & values of custom fields as a map.

setCustomField

public void setCustomField(@Nonnull
                           String customFieldName,
                           @Nullable
                           Object value)

Sets the value of a single custom field.

Parameters:

customFieldName - Name of the custom field.

value - Value of the custom field.

setCustomField

public <FieldT> void setCustomField(@Nonnull
                                    SimpleProperty<ObjectT> customField,
                                    @Nullable
                                    FieldT value)

Sets the value of a single custom field. If the EntityField passed as parameter holds a TypeConverter, the value will be converted before it's stored.

Type Parameters:

FieldT - The type of the custom field to set.

Parameters:

customField - Name of the custom field, represented as an EntityField object.

value - Value of the custom field.

hasCustomField

public boolean hasCustomField(@Nonnull
                              String customFieldName)

Checks whether this object contains a custom field with the given name.

Parameters:

customFieldName - Name of the custom field to check for

Returns:

true if this entity has a custom field with the given name, false otherwise.

hasCustomField

public boolean hasCustomField(@Nonnull
                              SimpleProperty<ObjectT> customField)

Checks whether this object contains a value for the given custom field.

Parameters:

customField - Custom field to check for, represented as an EntityField object.

Returns:

true if this object has a custom field with the name of the given field, false otherwise.

getCustomField

@Nullable
public <FieldT> FieldT getCustomField(@Nonnull
                                                String customFieldName)
                                         throws NoSuchElementException

This method allows for retrieval of custom fields that are added to the underlying OData services.

Type Parameters:

FieldT - The type of the returned field.

Parameters:

customFieldName - Name of the field returned by the underlying OData service.

Returns:

The value of the custom field. Actual type will depend on the type configured in the underlying OData service.

Throws:

NoSuchElementException - if no field with the given name could be found.

getCustomField

@Nullable
public <FieldT> FieldT getCustomField(@Nonnull
                                                SimpleProperty<ObjectT> customField)
                                         throws NoSuchElementException

This method allows for retrieval of custom fields that are added to the underlying OData services. If the EntityField passed as parameter holds a TypeConverter, the value will be converted before it's returned.

Type Parameters:

FieldT - The type of the returned field.

Parameters:

customField - Field returned by the underlying OData service.

Returns:

The value of the custom field. Actual type will depend on the type configured in the underlying OData service.

Throws:

NoSuchElementException - if no field with the given name could be found.

getAnnotationProperties

@Nonnull
public Map<String,String> getAnnotationProperties()

Returns:

List of OData annotation properties.

getOdataType

@Nonnull
public abstract String getOdataType()

Returns:

The EDMX type of this entity.

getType

@Nonnull
public abstract Class<ObjectT> getType()

Returns:

The class of this object.

getKey

@Nonnull
protected ODataEntityKey getKey()

Returns:

The compound key of this object.

fromMap

protected void fromMap(Map<String,Object> values)

Read entity data from generic map.

Parameters:

values - The key-value map.

toMapOfCustomFields

@Nonnull
protected Map<String,Object> toMapOfCustomFields()

Get the custom fields as value map.

Returns:

The custom fields.

getSetOfCustomFields

@Nonnull
protected Set<String> getSetOfCustomFields()

Get the custom field names.

Returns:

The custom field names.

toMapOfFields

@Nonnull
protected Map<String,Object> toMapOfFields()

Get all fields as map.

Returns:

The fields as map.

getSetOfFields

@Nonnull
protected Set<String> getSetOfFields()

Get the field names.

Returns:

The field names.

toMapOfNavigationProperties

@Nonnull
protected Map<String,Object> toMapOfNavigationProperties()

Get navigation properties as map.

Returns:

The navigation properties.

getSetOfNavigationProperties

@Nonnull
protected Set<String> getSetOfNavigationProperties()

Get navigation property names as set.

Returns:

The navigation property names.

toMap

@Nonnull
protected Map<String,Object> toMap()

Translate the entity data to key-value map.

Returns:

The map representation of the entity.

getChangedFields

@Nonnull
public Map<String,Object> getChangedFields()

Returns map of all fields which have been changed on this entity along with their updated values.

Returns:

Map containing all changed fields with their current value.

rememberChangedField

protected void rememberChangedField(@Nonnull
                                    String fieldName,
                                    @Nullable
                                    Object valueBeforeChange)

Remembers the original value of a changed field.

Parameters:

fieldName - The name of the field that is changed.

valueBeforeChange - The original value before the change.

resetChangedFields

public void resetChangedFields()

Resets the map of all fields which have been changed on this entity.

After calling this method, no field is considered changed, until you change the value of fields on this entity afterwards.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

canEqual

protected boolean canEqual(Object other)

hashCode

public int hashCode()

Overrides:

hashCode in class Object