org.datanucleus.store.rdbms.mapping.java

Class SingleFieldMultiMapping

java.lang.Object

org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

org.datanucleus.store.rdbms.mapping.java.SingleFieldMultiMapping

Direct Known Subclasses:

GregorianCalendarMapping, TypeConverterMultiMapping

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.rdbms.mapping.java.JavaTypeMapping

absFieldNumber, columnMappings, mmd, referenceMapping, roleForMember, storeMgr, table, type

Constructor Summary

Constructors

Constructor and Description
SingleFieldMultiMapping()

Method Summary

Modifier and Type	Method and Description
protected void	addColumns(String typeName) Convenience method to add a column for this mapping.
String	getJavaTypeForColumnMapping(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.rdbms.mapping.java.JavaTypeMapping

addColumnMapping, equals, failureMessage, getAbsoluteFieldNumber, getBoolean, getByte, getChar, getColumnMapping, getColumnMappings, getColumnMetaDataForMember, getDouble, getFloat, getInt, getJavaType, getLong, getMemberMetaData, getNumberOfColumnMappings, getObject, getObject, getReferenceMapping, getRoleForMember, getShort, getStoreManager, getString, getTable, getType, getValueForColumnMapping, hashCode, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, initialize, isNullable, isSerialised, representableAsStringLiteralInStatement, setAbsFieldNumber, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setMemberMetaData, setObject, setObject, setReferenceMapping, setRoleForMember, setShort, setString, setTable

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleFieldMultiMapping

public SingleFieldMultiMapping()

Method Detail

addColumns

protected void addColumns(String typeName)

Convenience method to add a column 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 column mapping is added to the end of the columnMappings.

Parameters:

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

getJavaTypeForColumnMapping

public String getJavaTypeForColumnMapping(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:

getJavaTypeForColumnMapping in class JavaTypeMapping

Parameters:

index - requested column index.

Returns:

the name of java-type for the requested column.

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)