java.lang.Object
- org.datanucleus.metadata.MetaData
- - org.datanucleus.metadata.ContainerMetaData
  - - org.datanucleus.metadata.MapMetaData

All Implemented Interfaces:

Serializable
```
public class MapMetaData
extends ContainerMetaData
```
Representation of the Meta-Data for a Map.

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class MapMetaData.MapType

Field Summary

Fields
Modifier and Type	Field	Description
`protected org.datanucleus.metadata.ContainerComponent`	`key`	Representation of the key of the map.
`protected MapMetaData.MapType`	`mapType`	Type of map.
`protected org.datanucleus.metadata.ContainerComponent`	`value`	Representation of the value of the map.

Fields inherited from class org.datanucleus.metadata.MetaData
EXTENSION_CLASS_CREATETIMESTAMP, EXTENSION_CLASS_CREATETIMESTAMP_COLUMN_NAME, EXTENSION_CLASS_CREATEUSER, EXTENSION_CLASS_CREATEUSER_COLUMN_LENGTH, EXTENSION_CLASS_CREATEUSER_COLUMN_NAME, EXTENSION_CLASS_MULTITENANCY_COLUMN_LENGTH, EXTENSION_CLASS_MULTITENANCY_COLUMN_NAME, EXTENSION_CLASS_MULTITENANCY_JDBC_TYPE, EXTENSION_CLASS_MULTITENANT, EXTENSION_CLASS_READ_ONLY, EXTENSION_CLASS_SOFTDELETE, EXTENSION_CLASS_SOFTDELETE_COLUMN_NAME, EXTENSION_CLASS_UPDATETIMESTAMP, EXTENSION_CLASS_UPDATETIMESTAMP_COLUMN_NAME, EXTENSION_CLASS_UPDATEUSER, EXTENSION_CLASS_UPDATEUSER_COLUMN_LENGTH, EXTENSION_CLASS_UPDATEUSER_COLUMN_NAME, EXTENSION_CLASS_VERSION_FIELD_NAME, EXTENSION_CLASS_VIEW_DEFINITION, EXTENSION_CLASS_VIEW_IMPORTS, EXTENSION_INDEX_COLUMN_ORDERING, EXTENSION_MEMBER_CACHEABLE, EXTENSION_MEMBER_CALENDAR_ONE_COLUMN, EXTENSION_MEMBER_CASCADE_ATTACH, EXTENSION_MEMBER_CASCADE_DETACH, EXTENSION_MEMBER_CASCADE_PERSIST, EXTENSION_MEMBER_CASCADE_REFRESH, EXTENSION_MEMBER_COMPARATOR_NAME, EXTENSION_MEMBER_CONTAINER_ALLOW_NULLS, EXTENSION_MEMBER_CREATE_TIMESTAMP, EXTENSION_MEMBER_CREATE_USER, EXTENSION_MEMBER_ENUM_VALUE_GETTER, EXTENSION_MEMBER_FETCH_FK_ONLY, EXTENSION_MEMBER_IMPLEMENTATION_CLASSES, EXTENSION_MEMBER_INSERTABLE, EXTENSION_MEMBER_KEY_IMPLEMENTATION_CLASSES, EXTENSION_MEMBER_LIST_ORDERING, EXTENSION_MEMBER_RELATION_DISCRIM_COLUMN, EXTENSION_MEMBER_RELATION_DISCRIM_PK, EXTENSION_MEMBER_RELATION_DISCRIM_VALUE, EXTENSION_MEMBER_STRATEGY_WHEN_NOTNULL, EXTENSION_MEMBER_TYPE_CONVERTER_DISABLED, EXTENSION_MEMBER_TYPE_CONVERTER_NAME, EXTENSION_MEMBER_UPDATE_TIMESTAMP, EXTENSION_MEMBER_UPDATE_USER, EXTENSION_MEMBER_UPDATEABLE, EXTENSION_MEMBER_VALUE_IMPLEMENTATION_CLASSES, EXTENSION_VERSION_NUMBER_INITIAL_VALUE, extensions, metaDataState, parent, VENDOR_NAME

Constructor Summary

Constructors
Constructor Description

MapMetaData()
Default constructor.

MapMetaData(MapMetaData mapmd)
Constructor to create a copy of the passed metadata.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`AbstractClassMetaData`	`getKeyClassMetaData(ClassLoaderResolver clr)`	Convenience accessor for the Key ClassMetaData.
`String`	`getKeyType()`	Accessor for the key-type tag value.
`String[]`	`getKeyTypes()`
`MapMetaData.MapType`	`getMapType()`
`AbstractClassMetaData`	`getValueClassMetaData(ClassLoaderResolver clr)`	Convenience accessor for the Value ClassMetaData
`String`	`getValueType()`	Accessor for the value-type tag value.
`String[]`	`getValueTypes()`
`boolean`	`isDependentKey()`	Accessor for the dependent-key attribute indicates that the map's key contains references that are to be deleted if the referring instance is deleted.
`boolean`	`isDependentValue()`	Accessor for the dependent-value attribute indicates that the map's value contains references that are to be deleted if the referring instance is deleted.
`boolean`	`isEmbeddedKey()`	Accessor for the embedded-key tag value.
`boolean`	`isEmbeddedValue()`	Accessor for the embedded-value tag value.
`boolean`	`isSerializedKey()`	Accessor for the serialized-key tag value.
`boolean`	`isSerializedValue()`	Accessor for the serialized-value tag value.
`boolean`	`keyIsPersistent()`
`void`	`populate(ClassLoaderResolver clr, ClassLoader primary)`	Method to populate any defaults, and check the validity of the MetaData.
`MapMetaData`	`setDependentKey(boolean dependent)`
`MapMetaData`	`setDependentValue(boolean dependent)`
`MapMetaData`	`setEmbeddedKey(boolean embedded)`
`MapMetaData`	`setEmbeddedValue(boolean embedded)`
`MapMetaData`	`setKeyType(String type)`
`MapMetaData`	`setSerializedKey(boolean serialized)`
`MapMetaData`	`setSerializedValue(boolean serialized)`
`MapMetaData`	`setValueType(String type)`
`String`	`toString()`
`boolean`	`valueIsPersistent()`

Methods inherited from class org.datanucleus.metadata.ContainerMetaData
allowNulls, getMemberMetaData, getMemberName, populate

Methods inherited from class org.datanucleus.metadata.MetaData
addExtension, addExtensions, getExtensions, getMetaDataManager, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, initialise, isInitialised, isPopulated, isUsed, removeExtension, setExtensions, setParent

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - mapType
```
protected MapMetaData.MapType mapType
```
    Type of map.
  - key
```
protected org.datanucleus.metadata.ContainerComponent key
```
    Representation of the key of the map.
  - value
```
protected org.datanucleus.metadata.ContainerComponent value
```
    Representation of the value of the map.
- Constructor Detail
  - MapMetaData
```
public MapMetaData(MapMetaData mapmd)
```
    Constructor to create a copy of the passed metadata.
    
    Parameters:
    
    mapmd - The metadata to copy
  - MapMetaData
```
public MapMetaData()
```
    Default constructor. Set the fields using setters, before populate().
- Method Detail
  - populate
```
public void populate(ClassLoaderResolver clr,
                     ClassLoader primary)
```
    Method to populate any defaults, and check the validity of the MetaData.
    
    Parameters:
    
    clr - ClassLoaderResolver to use for loading any key/value types
    
    primary - the primary ClassLoader to use (or null)
  - getMapType
```
public MapMetaData.MapType getMapType()
```
  - getKeyClassMetaData
```
public AbstractClassMetaData getKeyClassMetaData(ClassLoaderResolver clr)
```
    Convenience accessor for the Key ClassMetaData.
    
    Parameters:
    
    clr - ClassLoader resolver (in case we need to initialise it)
    
    Returns:
    
    key ClassMetaData
  - keyIsPersistent
```
public boolean keyIsPersistent()
```
  - getValueClassMetaData
```
public AbstractClassMetaData getValueClassMetaData(ClassLoaderResolver clr)
```
    Convenience accessor for the Value ClassMetaData
    
    Parameters:
    
    clr - ClassLoader resolver (in case we need to initialise it)
    
    Returns:
    
    value ClassMetaData
  - valueIsPersistent
```
public boolean valueIsPersistent()
```
  - isEmbeddedKey
```
public boolean isEmbeddedKey()
```
    Accessor for the embedded-key tag value.
    
    Returns:
    
    embedded-key tag value
  - isEmbeddedValue
```
public boolean isEmbeddedValue()
```
    Accessor for the embedded-value tag value.
    
    Returns:
    
    embedded-value tag value
  - isSerializedKey
```
public boolean isSerializedKey()
```
    Accessor for the serialized-key tag value.
    
    Returns:
    
    serialized-key tag value
  - isSerializedValue
```
public boolean isSerializedValue()
```
    Accessor for the serialized-value tag value.
    
    Returns:
    
    serialized-value tag value
  - isDependentKey
```
public boolean isDependentKey()
```
    Accessor for the dependent-key attribute indicates that the map's key contains references that are to be deleted if the referring instance is deleted.
    
    Returns:
    
    dependent-key tag value
  - isDependentValue
```
public boolean isDependentValue()
```
    Accessor for the dependent-value attribute indicates that the map's value contains references that are to be deleted if the referring instance is deleted.
    
    Returns:
    
    dependent-value tag value
  - getKeyType
```
public String getKeyType()
```
    Accessor for the key-type tag value.
    
    Returns:
    
    key-type tag value
  - getKeyTypes
```
public String[] getKeyTypes()
```
  - setKeyType
```
public MapMetaData setKeyType(String type)
```
  - setEmbeddedKey
```
public MapMetaData setEmbeddedKey(boolean embedded)
```
  - setSerializedKey
```
public MapMetaData setSerializedKey(boolean serialized)
```
  - setDependentKey
```
public MapMetaData setDependentKey(boolean dependent)
```
  - getValueType
```
public String getValueType()
```
    Accessor for the value-type tag value.
    
    Returns:
    
    value-type tag value
  - getValueTypes
```
public String[] getValueTypes()
```
  - setValueType
```
public MapMetaData setValueType(String type)
```
  - setEmbeddedValue
```
public MapMetaData setEmbeddedValue(boolean embedded)
```
  - setSerializedValue
```
public MapMetaData setSerializedValue(boolean serialized)
```
  - setDependentValue
```
public MapMetaData setDependentValue(boolean dependent)
```
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Constructor	Description
`MapMetaData()`	Default constructor.
`MapMetaData(MapMetaData mapmd)`	Constructor to create a copy of the passed metadata.

Class MapMetaData

Nested Class Summary

Field Summary

Fields inherited from class org.datanucleus.metadata.MetaData

Constructor Summary

Method Summary

Methods inherited from class org.datanucleus.metadata.ContainerMetaData

Methods inherited from class org.datanucleus.metadata.MetaData

Methods inherited from class java.lang.Object

Field Detail

mapType

key

value

Constructor Detail

MapMetaData

MapMetaData

Method Detail

populate

getMapType

getKeyClassMetaData

keyIsPersistent

getValueClassMetaData

valueIsPersistent

isEmbeddedKey

isEmbeddedValue

isSerializedKey

isSerializedValue

isDependentKey

isDependentValue

getKeyType

getKeyTypes

setKeyType

setEmbeddedKey

setSerializedKey

setDependentKey

getValueType

getValueTypes

setValueType

setEmbeddedValue

setSerializedValue

setDependentValue

toString