org.datanucleus.store.rdbms.mapping
Class BlobRDBMSMapping

java.lang.Object
  org.datanucleus.store.rdbms.mapping.RDBMSMapping
      org.datanucleus.store.rdbms.mapping.AbstractLargeBinaryRDBMSMapping
          org.datanucleus.store.rdbms.mapping.BlobRDBMSMapping

All Implemented Interfaces:

org.datanucleus.store.mapped.mapping.DatastoreMapping

public class BlobRDBMSMapping
extends AbstractLargeBinaryRDBMSMapping

Mapping of a BLOB RDBMS type. A BLOB column can be treated in two ways in terms of storage and retrieval.

• Serialise the field into the BLOB using ObjectOutputStream, and deserialise it back using ObjectInputStream
• Store the field using a byte[] stream, and retrieve it in the same way.

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.mapping.RDBMSMapping

column, LOCALISER, LOCALISER_STORE, mapping, storeMgr

Constructor Summary

	BlobRDBMSMapping(org.datanucleus.store.mapped.mapping.JavaTypeMapping mapping, org.datanucleus.store.mapped.MappedStoreManager storeMgr, org.datanucleus.store.mapped.DatastoreField field) Constructor.
protected	BlobRDBMSMapping(org.datanucleus.store.mapped.MappedStoreManager storeMgr, org.datanucleus.store.mapped.mapping.JavaTypeMapping mapping) Constructor.

Method Summary

java.lang.String	getString(java.lang.Object rs, int param) Accessor for String value when serialised.
SQLTypeInfo	getTypeInfo() Accessor for the RDBMS BLOB type being represented.
void	setString(java.lang.Object ps, int param, java.lang.String value) Cater for serialisation of Strings.

Methods inherited from class org.datanucleus.store.rdbms.mapping.AbstractLargeBinaryRDBMSMapping

getObject, initialize, setObject

Methods inherited from class org.datanucleus.store.rdbms.mapping.RDBMSMapping

equals, failureMessage, getBoolean, getByte, getChar, getColumn, getDatabaseAdapter, getDatastoreField, getDouble, getFloat, getInsertionInputParameter, getInt, getJavaTypeMapping, getLong, getShort, getUpdateInputParameter, hashCode, includeInFetchStatement, initTypeInfo, insertValuesOnInsert, isBitBased, isBooleanBased, isDecimalBased, isIntegerBased, isNullable, isStringBased, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setShort

Methods inherited from class java.lang.Object

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

Constructor Detail

BlobRDBMSMapping

protected BlobRDBMSMapping(org.datanucleus.store.mapped.MappedStoreManager storeMgr,
                           org.datanucleus.store.mapped.mapping.JavaTypeMapping mapping)

Constructor.

Parameters:

storeMgr - Store Manager

mapping - Java type mapping

BlobRDBMSMapping

public BlobRDBMSMapping(org.datanucleus.store.mapped.mapping.JavaTypeMapping mapping,
                        org.datanucleus.store.mapped.MappedStoreManager storeMgr,
                        org.datanucleus.store.mapped.DatastoreField field)

Constructor.

Parameters:

mapping - Java type mapping

storeMgr - Store Manager

field - Field to be mapped

Method Detail

getTypeInfo

public SQLTypeInfo getTypeInfo()

Accessor for the RDBMS BLOB type being represented.

Specified by:

getTypeInfo in class RDBMSMapping

Returns:

TypeInfo for the BLOB type.

setString

public void setString(java.lang.Object ps,
                      int param,
                      java.lang.String value)

Description copied from class: AbstractLargeBinaryRDBMSMapping

Cater for serialisation of Strings.

Specified by:

setString in interface org.datanucleus.store.mapped.mapping.DatastoreMapping

Overrides:

setString in class AbstractLargeBinaryRDBMSMapping

Parameters:

ps - PreparedStatement

param - param indexes

value - The value of the String

getString

public java.lang.String getString(java.lang.Object rs,
                                  int param)

Description copied from class: AbstractLargeBinaryRDBMSMapping

Accessor for String value when serialised.

Specified by:

getString in interface org.datanucleus.store.mapped.mapping.DatastoreMapping

Overrides:

getString in class AbstractLargeBinaryRDBMSMapping

Parameters:

rs - ResultSet

param - param indexes

Returns:

The String value