org.datanucleus.store.rdbms.mapping.java

Class ClassMapping

java.lang.Object

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

org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

org.datanucleus.store.rdbms.mapping.java.ObjectAsStringMapping

org.datanucleus.store.rdbms.mapping.java.ClassMapping

public class ClassMapping
extends ObjectAsStringMapping

Mapping for a Class type. Converts it to a String for persisting in the datastore.

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

absFieldNumber, datastoreMappings, LOCALISER, LOCALISER_RDBMS, mmd, referenceMapping, roleForMember, storeMgr, table, type

Constructor Summary

Constructors

Constructor and Description
ClassMapping()

Method Summary

Methods

Modifier and Type	Method and Description
Class	getJavaType() Method to return the Java type.
void	initialize(org.datanucleus.metadata.AbstractMemberMetaData fmd, Table table, org.datanucleus.ClassLoaderResolver clr) Initialize this JavaTypeMapping with the given DatastoreAdapter for the given FieldMetaData.
protected String	objectToString(Object object) Method to set the datastore string value based on the object value.
protected Object	stringToObject(String datastoreValue) Method to extract the objects value from the datastore string value.

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.ObjectAsStringMapping

getJavaTypeForDatastoreMapping, getObject, setObject

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

equals, getBoolean, getByte, getChar, getDefaultLength, getDouble, getFloat, getInt, getLong, getShort, getString, getValidValues, prepareDatastoreMapping, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setShort, setString

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

addDatastoreMapping, failureMessage, getAbsoluteFieldNumber, getColumnMetaDataForMember, getDatastoreMapping, getDatastoreMappings, getMemberMetaData, getNumberOfDatastoreMappings, getObject, getReferenceMapping, getRoleForMember, getStoreManager, getTable, getType, getValueForDatastoreMapping, hashCode, hasSimpleDatastoreRepresentation, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, representableAsStringLiteralInStatement, setAbsFieldNumber, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember, setTable

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassMapping

public ClassMapping()

Method Detail

initialize

public void initialize(org.datanucleus.metadata.AbstractMemberMetaData fmd,
              Table table,
              org.datanucleus.ClassLoaderResolver clr)

Description copied from class: SingleFieldMapping

Initialize this JavaTypeMapping with the given DatastoreAdapter for the given FieldMetaData.

Overrides:

initialize in class SingleFieldMapping

Parameters:

fmd - FieldMetaData for the field to be mapped (if any)

table - The datastore container storing this mapping (if any)

clr - the ClassLoaderResolver

getJavaType

public Class getJavaType()

Description copied from class: ObjectAsStringMapping

Method to return the Java type.

Specified by:

getJavaType in class ObjectAsStringMapping

Returns:

The Java type being represented.

objectToString

protected String objectToString(Object object)

Method to set the datastore string value based on the object value.

Specified by:

objectToString in class ObjectAsStringMapping

Parameters:

object - The object

Returns:

The string value to pass to the datastore

stringToObject

protected Object stringToObject(String datastoreValue)

Method to extract the objects value from the datastore string value.

Specified by:

stringToObject in class ObjectAsStringMapping

Parameters:

datastoreValue - Value obtained from the datastore

Returns:

The value of this object (derived from the datastore string value)