org.datanucleus.store.mapped.mapping
Class CollectionMapping

java.lang.Object
  extended by org.datanucleus.store.mapped.mapping.JavaTypeMapping
      extended by org.datanucleus.store.mapped.mapping.SingleFieldMapping
          extended by org.datanucleus.store.mapped.mapping.AbstractContainerMapping
              extended by org.datanucleus.store.mapped.mapping.CollectionMapping
All Implemented Interfaces:
MappingCallbacks

public class CollectionMapping
extends AbstractContainerMapping
implements MappingCallbacks

Mapping for Collection/Set/List types.


Field Summary
 
Fields inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping
datastoreContainer, datastoreMappings, LOCALISER, mmd, referenceMapping, roleForMember, storeMgr, type
 
Constructor Summary
CollectionMapping()
           
 
Method Summary
 java.lang.Class getJavaType()
          Accessor for the Java type represented here.
 void insertPostProcessing(StateManager sm)
          Hook so that we can handle any post-processing on the insert of a particular field.
 ScalarExpression newLiteral(QueryExpression qs, java.lang.Object value)
          Accessor for a literal representing this type.
 ScalarExpression newScalarExpression(QueryExpression qs, LogicSetExpression te)
          Accessor for a scalar expression involving this object.
 void postInsert(StateManager sm)
          Method to be called after the insert of the owner class element.
 void postUpdate(StateManager sm)
          Method to be called after any update of the owner class element.
 void preDelete(StateManager sm)
          Method to be called before any delete of the owner class element.
 
Methods inherited from class org.datanucleus.store.mapped.mapping.AbstractContainerMapping
containerIsStoredInSingleColumn, getDatastoreContainer, getDatastoreMapping, getDatastoreMappings, getJavaTypeForDatastoreMapping, getNumberOfDatastoreMappings, getObject, getSampleValue, hasSimpleDatastoreRepresentation, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, postFetch, prepareDatastoreMapping, replaceFieldWithWrapper, setObject
 
Methods inherited from class org.datanucleus.store.mapped.mapping.SingleFieldMapping
equals, getBoolean, getByte, getChar, getDefaultLength, getDouble, getFloat, getInt, getLong, getShort, getString, getValidValues, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setShort, setString
 
Methods inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping
addDatastoreMapping, failureMessage, getColumnMetaDataForMember, getMemberMetaData, getObject, getReferenceMapping, getRoleForMember, getType, getValueForDatastoreMapping, hashCode, initialize, isNullable, isSerialised, setDatastoreContainer, setDefault, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.datanucleus.store.mapped.mapping.MappingCallbacks
postFetch
 

Constructor Detail

CollectionMapping

public CollectionMapping()
Method Detail

getJavaType

public java.lang.Class getJavaType()
Accessor for the Java type represented here.

Specified by:
getJavaType in class JavaTypeMapping
Returns:
The java type

insertPostProcessing

public void insertPostProcessing(StateManager sm)
Description copied from interface: MappingCallbacks
Hook so that we can handle any post-processing on the insert of a particular field. For example with Oracle we need to insert "EMPTY_CLOB" and then immediately after do a SELECT of it and update the contents of the CLOB/BLOB.

Specified by:
insertPostProcessing in interface MappingCallbacks
Parameters:
sm - StateManager

postInsert

public void postInsert(StateManager sm)
Method to be called after the insert of the owner class element.

Specified by:
postInsert in interface MappingCallbacks
Parameters:
sm - StateManager of the owner

postUpdate

public void postUpdate(StateManager sm)
Method to be called after any update of the owner class element. This method could be called in two situations

Specified by:
postUpdate in interface MappingCallbacks
Parameters:
sm - StateManager of the owner

preDelete

public void preDelete(StateManager sm)
Method to be called before any delete of the owner class element.

Specified by:
preDelete in interface MappingCallbacks
Parameters:
sm - StateManager of the owner

newLiteral

public ScalarExpression newLiteral(QueryExpression qs,
                                   java.lang.Object value)
Accessor for a literal representing this type.

Overrides:
newLiteral in class JavaTypeMapping
Parameters:
qs - The Query
value - the value of this object in the literal
Returns:
The literal

newScalarExpression

public ScalarExpression newScalarExpression(QueryExpression qs,
                                            LogicSetExpression te)
Accessor for a scalar expression involving this object.

Overrides:
newScalarExpression in class JavaTypeMapping
Parameters:
qs - The Query
te - The table holding this object.
Returns:
The expression


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