AbstractElementMetaData (DataNucleus Core 3.2.10 API)

java.lang.Object
- org.datanucleus.metadata.MetaData
- - org.datanucleus.metadata.AbstractElementMetaData

All Implemented Interfaces:

Serializable, ColumnMetaDataContainer

Direct Known Subclasses:

ElementMetaData, KeyMetaData, ValueMetaData
```
public abstract class AbstractElementMetaData
extends MetaData
implements ColumnMetaDataContainer
```
This element specifies the mapping for the element component of arrays and collections. If only one column is mapped, and no additional information is needed for the column, then the column attribute can be used. Otherwise, the column element(s) are used. The serialized attribute specifies that the key values are to be serialized into the named column. The foreign-key attribute specifies the name of a foreign key to be generated.

See Also:
Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`protected ColumnMetaData[]`	`columnMetaData`
`protected String`	`columnName` column name value.
`protected List<ColumnMetaData>`	`columns` Columns ColumnMetaData
`protected EmbeddedMetaData`	`embeddedMetaData` EmbeddedMetaData
`protected ForeignKeyMetaData`	`foreignKeyMetaData` ForeignKeyMetaData
`protected IndexedValue`	`indexed` The indexing value
`protected IndexMetaData`	`indexMetaData` IndexMetaData
`protected String`	`mappedBy` Field that this is mapped to.
`protected boolean`	`unique` Whether to add a unique constraint
`protected UniqueMetaData`	`uniqueMetaData` UniqueMetaData.

Fields inherited from class org.datanucleus.metadata.MetaData
extensions, LOCALISER, METADATA_CREATED_STATE, METADATA_INITIALISED_STATE, METADATA_POPULATED_STATE, METADATA_USED_STATE, metaDataState, parent, VENDOR_NAME, VENDOR_NAME_OLD

Constructor Summary

Constructors
Constructor and Description
`AbstractElementMetaData()` Default constructor.
`AbstractElementMetaData(AbstractElementMetaData aemd)` Constructor to create a copy of the passed metadata object.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`addColumn(ColumnMetaData colmd)` Add a new ColumnMetaData element
`ColumnMetaData[]`	`getColumnMetaData()` Accessor for columnMetaData
`String`	`getColumnName()`
`ForeignKeyAction`	`getDeleteAction()`
`EmbeddedMetaData`	`getEmbeddedMetaData()` Accessor for embeddedMetaData
`ForeignKeyMetaData`	`getForeignKeyMetaData()` Accessor for foreignKeyMetaData
`IndexedValue`	`getIndexed()`
`IndexMetaData`	`getIndexMetaData()` Accessor for indexMetaData
`String`	`getMappedBy()`
`UniqueMetaData`	`getUniqueMetaData()` Accessor for uniqueMetaData
`ForeignKeyAction`	`getUpdateAction()`
`void`	`initialise(ClassLoaderResolver clr, MetaDataManager mmgr)` Method to initialise the object, creating any convenience arrays needed.
`boolean`	`isUnique()`
`ColumnMetaData`	`newColumnMetaData()` Method to create a column metadata, add it, and return it.
`EmbeddedMetaData`	`newEmbeddedMetaData()` Method to create an embedded metadata, add it, and return it.
`ForeignKeyMetaData`	`newForeignKeyMetaData()` Method to create a unique metadata, add it, and return it.
`IndexMetaData`	`newIndexMetaData()` Method to create an index metadata, add it, and return it.
`UniqueMetaData`	`newUniqueMetaData()` Method to create a unique metadata, add it, and return it.
`void`	`populate(ClassLoaderResolver clr, ClassLoader primary, MetaDataManager mmgr)` Populate the metadata.
`void`	`setColumnName(String columnName)`
`void`	`setDeleteAction(ForeignKeyAction deleteAction)`
`void`	`setDeleteAction(String deleteAction)`
`void`	`setEmbeddedMetaData(EmbeddedMetaData embeddedMetaData)` Mutator for the Embedded MetaData
`void`	`setForeignKeyMetaData(ForeignKeyMetaData foreignKeyMetaData)` Mutator for the Foreign Key MetaData
`void`	`setIndexed(IndexedValue indexed)`
`void`	`setIndexMetaData(IndexMetaData indexMetaData)` Mutator for the Index MetaData
`void`	`setMappedBy(String mappedBy)`
`void`	`setUnique(boolean unique)`
`void`	`setUniqueMetaData(UniqueMetaData uniqueMetaData)` Mutator for the Unique MetaData
`void`	`setUpdateAction(ForeignKeyAction updateAction)`
`void`	`setUpdateAction(String updateAction)`

Methods inherited from class org.datanucleus.metadata.MetaData
addExtension, addExtension, assertIfInitialised, getExtensions, getNoOfExtensions, getParent, getValueForExtension, getValuesForExtension, hasExtension, isInitialised, isPopulated, isUsed, newExtensionMetaData, removeExtension, setParent, toString, toString

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

- Field Detail
  - unique
```
protected boolean unique
```
    Whether to add a unique constraint
  - columnName
```
protected String columnName
```
    column name value.
  - mappedBy
```
protected String mappedBy
```
    Field that this is mapped to.
  - indexed
```
protected IndexedValue indexed
```
    The indexing value
  - indexMetaData
```
protected IndexMetaData indexMetaData
```
    IndexMetaData
  - uniqueMetaData
```
protected UniqueMetaData uniqueMetaData
```
    UniqueMetaData.
  - foreignKeyMetaData
```
protected ForeignKeyMetaData foreignKeyMetaData
```
    ForeignKeyMetaData
  - embeddedMetaData
```
protected EmbeddedMetaData embeddedMetaData
```
    EmbeddedMetaData
  - columns
```
protected final List<ColumnMetaData> columns
```
    Columns ColumnMetaData
  - columnMetaData
```
protected ColumnMetaData[] columnMetaData
```
- Constructor Detail
  - AbstractElementMetaData
```
public AbstractElementMetaData(AbstractElementMetaData aemd)
```
    Constructor to create a copy of the passed metadata object.
    
    Parameters:
    aemd - The metadata to copy
  - AbstractElementMetaData
```
public AbstractElementMetaData()
```
    Default constructor. Set the fields using setters, before populate().
- Method Detail
  - populate
```
public void populate(ClassLoaderResolver clr,
            ClassLoader primary,
            MetaDataManager mmgr)
```
    Populate the metadata.
    
    Parameters:
    clr - the ClassLoaderResolver
    primary - the primary ClassLoader to use (or null)
    mmgr - MetaData manager
  - initialise
```
public void initialise(ClassLoaderResolver clr,
              MetaDataManager mmgr)
```
    Method to initialise the object, creating any convenience arrays needed. Initialises all sub-objects.
    
    Overrides:
    
    initialise in class MetaData
  - getColumnName
```
public final String getColumnName()
```
  - setColumnName
```
public void setColumnName(String columnName)
```
  - getMappedBy
```
public String getMappedBy()
```
  - setMappedBy
```
public void setMappedBy(String mappedBy)
```
  - getIndexed
```
public IndexedValue getIndexed()
```
  - setIndexed
```
public void setIndexed(IndexedValue indexed)
```
  - isUnique
```
public boolean isUnique()
```
  - setUnique
```
public void setUnique(boolean unique)
```
  - getDeleteAction
```
public ForeignKeyAction getDeleteAction()
```
  - setDeleteAction
```
public void setDeleteAction(String deleteAction)
```
  - setDeleteAction
```
public void setDeleteAction(ForeignKeyAction deleteAction)
```
  - getUpdateAction
```
public ForeignKeyAction getUpdateAction()
```
  - setUpdateAction
```
public void setUpdateAction(String updateAction)
```
  - setUpdateAction
```
public void setUpdateAction(ForeignKeyAction updateAction)
```
  - getColumnMetaData
```
public final ColumnMetaData[] getColumnMetaData()
```
    Accessor for columnMetaData
    
    Specified by:
    
    getColumnMetaData in interface ColumnMetaDataContainer
    
    Returns:
    Returns the columnMetaData.
  - getEmbeddedMetaData
```
public final EmbeddedMetaData getEmbeddedMetaData()
```
    Accessor for embeddedMetaData
    
    Returns:
    Returns the embeddedMetaData.
  - getForeignKeyMetaData
```
public final ForeignKeyMetaData getForeignKeyMetaData()
```
    Accessor for foreignKeyMetaData
    
    Returns:
    Returns the foreignKeyMetaData.
  - getIndexMetaData
```
public final IndexMetaData getIndexMetaData()
```
    Accessor for indexMetaData
    
    Returns:
    Returns the indexMetaData.
  - getUniqueMetaData
```
public final UniqueMetaData getUniqueMetaData()
```
    Accessor for uniqueMetaData
    
    Returns:
    Returns the uniqueMetaData.
  - addColumn
```
public void addColumn(ColumnMetaData colmd)
```
    Add a new ColumnMetaData element
    
    Specified by:
    
    addColumn in interface ColumnMetaDataContainer
    
    Parameters:
    colmd - The Column MetaData
  - newColumnMetaData
```
public ColumnMetaData newColumnMetaData()
```
    Method to create a column metadata, add it, and return it.
    
    Returns:
    The column metadata
  - setEmbeddedMetaData
```
public final void setEmbeddedMetaData(EmbeddedMetaData embeddedMetaData)
```
    Mutator for the Embedded MetaData
    
    Parameters:
    embeddedMetaData - The embeddedMetaData to set.
  - newEmbeddedMetaData
```
public EmbeddedMetaData newEmbeddedMetaData()
```
    Method to create an embedded metadata, add it, and return it.
    
    Returns:
    The embedded metadata
  - setForeignKeyMetaData
```
public final void setForeignKeyMetaData(ForeignKeyMetaData foreignKeyMetaData)
```
    Mutator for the Foreign Key MetaData
    
    Parameters:
    foreignKeyMetaData - The foreignKeyMetaData to set.
  - newForeignKeyMetaData
```
public ForeignKeyMetaData newForeignKeyMetaData()
```
    Method to create a unique metadata, add it, and return it.
    
    Returns:
    The unique metadata
  - setIndexMetaData
```
public final void setIndexMetaData(IndexMetaData indexMetaData)
```
    Mutator for the Index MetaData
    
    Parameters:
    indexMetaData - The indexMetaData to set.
  - newIndexMetaData
```
public IndexMetaData newIndexMetaData()
```
    Method to create an index metadata, add it, and return it.
    
    Returns:
    The index metadata
  - setUniqueMetaData
```
public final void setUniqueMetaData(UniqueMetaData uniqueMetaData)
```
    Mutator for the Unique MetaData
    
    Parameters:
    uniqueMetaData - The uniqueMetaData to set.
  - newUniqueMetaData
```
public UniqueMetaData newUniqueMetaData()
```
    Method to create a unique metadata, add it, and return it.
    
    Returns:
    The unique metadata

Class AbstractElementMetaData

Field Summary

Fields inherited from class org.datanucleus.metadata.MetaData

Constructor Summary

Method Summary

Methods inherited from class org.datanucleus.metadata.MetaData

Methods inherited from class java.lang.Object

Field Detail

unique

columnName

mappedBy

indexed

indexMetaData

uniqueMetaData

foreignKeyMetaData

embeddedMetaData

columns

columnMetaData

Constructor Detail

AbstractElementMetaData

AbstractElementMetaData

Method Detail

populate

initialise

getColumnName

setColumnName

getMappedBy

setMappedBy

getIndexed

setIndexed

isUnique

setUnique

getDeleteAction

setDeleteAction

setDeleteAction

getUpdateAction

setUpdateAction

setUpdateAction

getColumnMetaData

getEmbeddedMetaData

getForeignKeyMetaData

getIndexMetaData

getUniqueMetaData

addColumn

newColumnMetaData

setEmbeddedMetaData

newEmbeddedMetaData

setForeignKeyMetaData

newForeignKeyMetaData

setIndexMetaData

newIndexMetaData

setUniqueMetaData

newUniqueMetaData