org.datanucleus.store.mapped.mapping
Class SingleFieldMultiMapping

java.lang.Object
  org.datanucleus.store.mapped.mapping.JavaTypeMapping
      org.datanucleus.store.mapped.mapping.SingleFieldMultiMapping

Direct Known Subclasses:

ColorMapping, GregorianCalendarMapping

public abstract class SingleFieldMultiMapping
extends JavaTypeMapping

Mapping to represent a field that is mapped to multiple datastore columns.

Field Summary

Fields inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping

absFieldNumber, datastoreContainer, datastoreMappings, LOCALISER, mmd, referenceMapping, roleForMember, storeMgr, type

Constructor Summary

SingleFieldMultiMapping()

Method Summary

protected void	addDatastoreField(String typeName) Convenience method to add a datastore field for this mapping.
String	getJavaTypeForDatastoreMapping(int index) Accessor for the name of the java-type actually used when mapping the particular datastore field.
boolean	hasSimpleDatastoreRepresentation() Whether the mapping has a simple (single column) datastore representation.

Methods inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping

addDatastoreMapping, equals, failureMessage, getAbsoluteFieldNumber, getBoolean, getByte, getChar, getColumnMetaDataForMember, getDatastoreContainer, getDatastoreMapping, getDatastoreMappings, getDouble, getFloat, getInt, getJavaType, getLong, getMemberMetaData, getNumberOfDatastoreMappings, getObject, getObject, getReferenceMapping, getRoleForMember, getShort, getStoreManager, getString, getType, getValueForDatastoreMapping, hashCode, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, initialize, isNullable, isSerialised, representableAsStringLiteralInStatement, setAbsFieldNumber, setBoolean, setByte, setChar, setDatastoreContainer, setDouble, setFloat, setInt, setLong, setMemberMetaData, setObject, setObject, setReferenceMapping, setRoleForMember, setShort, setString

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleFieldMultiMapping

public SingleFieldMultiMapping()

Method Detail

addDatastoreField

protected void addDatastoreField(String typeName)

Convenience method to add a datastore field for this mapping. If this mapping is a "full" mapping (for a field in a table) then a Column will be added, otherwise (mapping representing a parameter in a query) will just add a datastore mapping. The datastore mapping is added to the end of the datastoreMappings.

Parameters:

typeName - Java type of the field to add the column for.

getJavaTypeForDatastoreMapping

public String getJavaTypeForDatastoreMapping(int index)

Accessor for the name of the java-type actually used when mapping the particular datastore field. This java-type must have an entry in the datastore mappings.

Overrides:

getJavaTypeForDatastoreMapping in class JavaTypeMapping

Parameters:

index - requested datastore field index.

Returns:

the name of java-type for the requested datastore field.

hasSimpleDatastoreRepresentation

public boolean hasSimpleDatastoreRepresentation()

Whether the mapping has a simple (single column) datastore representation.

Overrides:

hasSimpleDatastoreRepresentation in class JavaTypeMapping

Returns:

Whether it has a simple datastore representation (single column)