jobmatch.data
Class PictureDO

jobmatch.data.PictureDO

public class PictureDO

implements Serializable

Data core class, used to set, retrieve the PictureDO information.

Since:

jobmatch

Version:

$Revision: 1.2 $

See Also:

Serialized Form

Field Summary

static jobmatch.data.RDBColumn	Data
protected static boolean	isView
static jobmatch.data.RDBColumn	MimeType
static jobmatch.data.RDBColumn	PrimaryKey
static jobmatch.data.RDBTable	table static final data members name the table and columns for this DO.

Constructor Summary

protected	PictureDO() Protected constructor.
protected	PictureDO(boolean is_view) Protected constructor.
protected	PictureDO(jobmatch.data.ObjectId id) Protected constructor used by createExisting(ObjectId) above.
protected	PictureDO(ResultSet rs) Protected constructor.

Method Summary

protected void	afterAnySet()
protected void	beforeAnyGet() The developer of a Business Object that derives from this class can override the methods: beforeAnyGet beforeAnySet afterAnySet to handle any general assertions or cleanup needed for get and set methods.
protected void	beforeAnySet()
void	commit() Inserts/Updates the DO into its table.
void	commit(jobmatch.data.DBTransaction dbt) Inserts/Updates the DO into its table.
static PictureDO	createCopy(PictureDataStruct data) createCopy() Creates a DO that has no ObjectId but has a copy of an existing DO's data.
static PictureDO	createCopy(PictureDO orig) createCopy() Creates a DO that has no ObjectId but has a copy of an existing DO's data.
static PictureDO	createExisting(BigDecimal bd) createExisting( BigDecimal ) Factory method creates a PictureDO object by searching for it in the database using the passed BigDecimal value as the primary key.
protected static PictureDO	createExisting(jobmatch.data.ObjectId id) createExisting( ObjectId ) Factory method creates a PictureDO object by searching for it in the database using the passed ObjectID value as the primary key.
protected static PictureDO	createExisting(jobmatch.data.RDBColumnValue pk) createExisting( RDBColumnValue ) Factory method creates a PictureDO object by searching for it in the database using the passed PictureDO.PrimaryKey.
protected static PictureDO	createExisting(jobmatch.data.RDBRow row) createExisting( RDBRow ) Factory method creates a PictureDO object by searching for it in the database using the PictureDO.PrimaryKey value in the passed RDBRow.
protected static PictureDO	createExisting(ResultSet rs) createExisting( ResultSet ) Factory method used to create an instance of this class to represent a Data Object already existing in the database.
static PictureDO	createExisting(String handle) The createExisting method is used to create a PictureDO from a string handle.
static PictureDO	createVirgin() createVirgin() Creates a DO that has no ObjectId or data.
void	delete() Deletes the DO from its table.
void	delete(jobmatch.data.DBTransaction dbt) Deletes the DO from its table.
byte[]	getData() Get Data of the Picture
PreparedStatement	getDeleteStatement(jobmatch.data.DBConnection conn) Prepares the statement used to delete this object from the database.
String	getHandle() The methods getHandle hasMatchingHandle are used by Presentation Objects that need to populate HTML select lists with Data Objects as options.
PreparedStatement	getInsertStatement(jobmatch.data.DBConnection conn) Prepares the statement used to insert this object into the database.
String	getMimeType() Get MimeType of the Picture
protected String	getTableName() Return Picture as the name of the table in the database which contains PictureDO objects.
PreparedStatement	getUpdateStatement(jobmatch.data.DBConnection conn) Prepares the statement used to update this object in the database.
boolean	hasMatchingHandle(String handle) hasMatchingHandle
boolean	isLoaded() isLoaded() Returns true if the data for this objects has been retrieved from the database.
boolean	isReadOnly() isReadOnly() Returns true if the data for this object has been marked read-only.
void	loadData() loadData() Load the fields for the DO from the database.
protected void	makeIdentical(PictureDO orig) makeIdentical() Assigns the DataStruct of an existing DO to this DO.
protected void	modifyDO(jobmatch.data.DBTransaction dbt, boolean delete) Modifies the DO within its table.
protected void	okToCommit() A stub method for implementing pre-commit assertions for this PictureDO.
protected void	okToDelete() A stub method for implementing pre-delete assertions for this PictureDO.
void	reload() reload() Causes the DO to refresh itself from the database the next time a set or get method is called.
void	setData(byte[] Data) Set Data of the Picture
void	setMimeType(String MimeType) Set MimeType of the Picture
String	toString()
String	toString(int indentCount)

Field Detail

table

public static final jobmatch.data.RDBTable table

static final data members name the table and columns for this DO. By using these members with an instance of the QueryBuilder class, an application can perform straight SQL queries while retaining compile-time checking of table and column usage. Example: List the Cities containing Persons named Bob: Using straight SQL with QueryBuilder: Pro: code runs faster because you create fewer objects Con: code is less clear Vector fields = new Vector(); fields.addElement( AddressDO.City ); QueryBuilder qb = new QueryBuilder( fields ); qb.addWhere( PersonDO.FirstName, "Bob" ); qb.addWhere( PersonDO.PrimaryKey, AddressDO.Person ); RDBRow row; while ( null != ( row = qb.getNextRow() ) ) { String city = row.get( AddressDO.City ).getString(); } Using Query/DO classes: Pro: code is (often) clearer Con: code runs slower because you create more objects PersonQuery pq = new PersonQuery(); pq.setQueryFirstName( "Bob" ); PersonDO[] bobs = pq.getDOArray(); for ( int i = 0; i < bobs.length; i++ ) { AddressQuery aq = new AddressQuery(); aq.setQueryPerson( bobs[i] ); AddressDO addr = aq.getNextDO(); String city = addr.getCity(); }

PrimaryKey

public static final jobmatch.data.RDBColumn PrimaryKey

isView

protected static final boolean isView

MimeType

public static final jobmatch.data.RDBColumn MimeType

Data

public static final jobmatch.data.RDBColumn Data

Constructor Detail

PictureDO

protected PictureDO(boolean is_view)
             throws jobmatch.data.ObjectIdException,
                    jobmatch.data.DatabaseManagerException

Protected constructor. Only derived classes should call it.

Throws:

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

PictureDO

protected PictureDO()
             throws jobmatch.data.ObjectIdException,
                    jobmatch.data.DatabaseManagerException

Protected constructor. Only derived classes should call it.

Throws:

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

PictureDO

protected PictureDO(jobmatch.data.ObjectId id)
             throws SQLException,
                    jobmatch.data.ObjectIdException,
                    jobmatch.data.DataObjectException,
                    jobmatch.data.DatabaseManagerException

Protected constructor used by createExisting(ObjectId) above. Historical note (delete at will): Formerly, createExisting(ObjectId) invoked the no-args GenericDO ctor, which allocated a new ObjectId. Then, createExisting(ObjectId) would call setOId(id), discarding the newly allocated ObjectId; this resulted in an ObjectId "leak" (needless consumption of oid's.)

Parameters:

id - The ObjectId for the object.

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - Should never see this exception since GenericDO.ctor(ObjectId) never accesses the database.

PictureDO

protected PictureDO(ResultSet rs)
             throws SQLException,
                    jobmatch.data.ObjectIdException,
                    jobmatch.data.DataObjectException,
                    jobmatch.data.DatabaseManagerException

Protected constructor.

Parameters:

rs - Result set from which to obtain product data.

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

Method Detail

getTableName

protected String getTableName()

Return Picture as the name of the table in the database which contains PictureDO objects. This method overrides CoreDO.getTableName() and is used by CoreDO.executeUpdate() during error handling.

Returns:

the database table name

See Also:

CoreDO

isReadOnly

public boolean isReadOnly()

isReadOnly() Returns true if the data for this object has been marked read-only.

isLoaded

public boolean isLoaded()

isLoaded() Returns true if the data for this objects has been retrieved from the database.

loadData

public void loadData()
              throws SQLException,
                     jobmatch.data.ObjectIdException,
                     jobmatch.data.DataObjectException

loadData() Load the fields for the DO from the database.

Throws:

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DataObjectException - If the object is not found in the database.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

beforeAnyGet

protected void beforeAnyGet()

The developer of a Business Object that derives from this class can override the methods: beforeAnyGet beforeAnySet afterAnySet to handle any general assertions or cleanup needed for get and set methods.

beforeAnySet

protected void beforeAnySet()
                     throws Exception

afterAnySet

protected void afterAnySet()

createVirgin

public static PictureDO createVirgin()
                              throws jobmatch.data.DatabaseManagerException,
                                     jobmatch.data.ObjectIdException

createVirgin() Creates a DO that has no ObjectId or data. Such a DO is used to insert a new database entry after its data has been set.

Throws:

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

createExisting

public static PictureDO createExisting(BigDecimal bd)
                                throws SQLException,
                                       jobmatch.data.ObjectIdException,
                                       jobmatch.data.DataObjectException,
                                       jobmatch.data.DatabaseManagerException

createExisting( BigDecimal ) Factory method creates a PictureDO object by searching for it in the database using the passed BigDecimal value as the primary key. Creates a DO that represents an existing entry in the database. Such a DO is used to examine and possibly update such an entry. createExisting() is called only from the code that retrieves an ObjectId from a ResultSet (database query result). createExisting() is protected because no other DO or BO should ever need to call it. FIX unfortunately the createExisting(BigDecimal) form *does* need to be public because it is called by the public ctors of other DOs. For example, AaaDO contains a ref to a BbbDO, so there is a method AaaDO.setBbb(BbbDO). In the ctor AaaDO(ResultSet), we have the call setBbb( BbbDO.createExisting( rs.getBigDecimal( "bbb", 0 ))); Since AaaDO is not in the same package as BbbDO, BbbDO.createExisting(BigDecimal) must be public, not protected. Java needs the C++ 'friend' idea.

Parameters:

bd - The BigDecimal representation of the ObjectId for the object.

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

createExisting

public static PictureDO createExisting(String handle)

The createExisting method is used to create a PictureDO from a string handle.

createExisting

protected static PictureDO createExisting(jobmatch.data.ObjectId id)
                                   throws SQLException,
                                          jobmatch.data.ObjectIdException,
                                          jobmatch.data.DataObjectException,
                                          jobmatch.data.DatabaseManagerException

createExisting( ObjectId ) Factory method creates a PictureDO object by searching for it in the database using the passed ObjectID value as the primary key.

Parameters:

id - The ObjectId for the object.

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

createExisting

protected static PictureDO createExisting(ResultSet rs)
                                   throws SQLException,
                                          jobmatch.data.ObjectIdException,
                                          jobmatch.data.DataObjectException,
                                          jobmatch.data.DatabaseManagerException

createExisting( ResultSet ) Factory method used to create an instance of this class to represent a Data Object already existing in the database.

Parameters:

rs - The ResultSet returned by the Query class for an existing Data Object stored in the database.

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

createExisting

protected static PictureDO createExisting(jobmatch.data.RDBRow row)
                                   throws SQLException,
                                          jobmatch.data.ObjectIdException,
                                          jobmatch.data.DataObjectException,
                                          jobmatch.data.DatabaseManagerException

createExisting( RDBRow ) Factory method creates a PictureDO object by searching for it in the database using the PictureDO.PrimaryKey value in the passed RDBRow.

Parameters:

RDBRow - A row returned by QueryBuilder.getNextRow().

Throws:

jobmatch.data.DataObjectException - If the RDBRow does not contain a PictureDO.PrimaryKey. If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

createExisting

protected static PictureDO createExisting(jobmatch.data.RDBColumnValue pk)
                                   throws SQLException,
                                          jobmatch.data.ObjectIdException,
                                          jobmatch.data.DataObjectException,
                                          jobmatch.data.DatabaseManagerException

createExisting( RDBColumnValue ) Factory method creates a PictureDO object by searching for it in the database using the passed PictureDO.PrimaryKey.

Parameters:

RDBColumnValue - a PrimaryKey column value from a row that was returned by QueryBuilder.getNextRow().

Throws:

jobmatch.data.DataObjectException - If the RDBColumnValue does not contain a PictureDO.PrimaryKey. If the object is not found in the database.

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

SQLException - If the database rejects the SQL generated to retrieve data for this object, or if the table contains a bad foreign key, etc.

createCopy

public static PictureDO createCopy(PictureDataStruct data)
                            throws jobmatch.data.DatabaseManagerException,
                                   jobmatch.data.ObjectIdException

createCopy() Creates a DO that has no ObjectId but has a copy of an existing DO's data. Such a DO is used to insert a new database entry that is largely similar to an existing entry.

Parameters:

data - The data struct to copy values from.

Throws:

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

createCopy

public static PictureDO createCopy(PictureDO orig)
                            throws jobmatch.data.DatabaseManagerException,
                                   jobmatch.data.ObjectIdException

createCopy() Creates a DO that has no ObjectId but has a copy of an existing DO's data. Such a DO is used to insert a new database entry that is largely similar to an existing entry.

Parameters:

orig - The original DO to copy.

Throws:

com.lutris.appserver.server.sql.ObjectIdException - If an object id can't be allocated for this object.

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

reload

public void reload()

reload() Causes the DO to refresh itself from the database the next time a set or get method is called.

getHandle

public String getHandle()
                 throws jobmatch.data.DatabaseManagerException

The methods getHandle hasMatchingHandle are used by Presentation Objects that need to populate HTML select lists with Data Objects as options. The getHandle() method is used to set the value for each option, and the hasMatchingHandle() methods are used to lookup the Data Object when the selection has been made.

Returns:

id of this DO as a string If an object id can't be allocated for this object.

Throws:

jobmatch.data.DatabaseManagerException - If a connection to the database cannot be established, etc.

hasMatchingHandle

public boolean hasMatchingHandle(String handle)

hasMatchingHandle

Parameters:

handle - String version of DO id

Returns:

boolean True if the string version of the id of this DO matches passed handle

See Also:

getHandle

makeIdentical

protected void makeIdentical(PictureDO orig)

makeIdentical() Assigns the DataStruct of an existing DO to this DO. Does not duplicate data. Just assigns the reference.

Parameters:

orig - The original DO.

getMimeType

public String getMimeType()
                   throws jobmatch.data.DataObjectException

Get MimeType of the Picture

Returns:

MimeType of the Picture

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

setMimeType

public void setMimeType(String MimeType)
                 throws jobmatch.data.DataObjectException

Set MimeType of the Picture

Parameters:

MimeType - of the Picture

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

getData

public byte[] getData()
               throws jobmatch.data.DataObjectException

Get Data of the Picture

Returns:

Data of the Picture

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

setData

public void setData(byte[] Data)
             throws jobmatch.data.DataObjectException

Set Data of the Picture

Parameters:

Data - of the Picture

Throws:

jobmatch.data.DataObjectException - If the object is not found in the database.

getInsertStatement

public PreparedStatement getInsertStatement(jobmatch.data.DBConnection conn)
                                     throws SQLException

Prepares the statement used to insert this object into the database.

Parameters:

conn - the database connection.

Returns:

the insert statement.

Throws:

SQLException - if an error occurs.

getUpdateStatement

public PreparedStatement getUpdateStatement(jobmatch.data.DBConnection conn)
                                     throws SQLException

Prepares the statement used to update this object in the database.

Parameters:

conn - the database connection

Returns:

the update statement.

Throws:

SQLException - if an error occurs.

getDeleteStatement

public PreparedStatement getDeleteStatement(jobmatch.data.DBConnection conn)
                                     throws SQLException

Prepares the statement used to delete this object from the database.

Parameters:

conn - the database connection

Returns:

the delete statement.

Throws:

SQLException - if an error occurs.

toString

public String toString()

toString

public String toString(int indentCount)

okToCommit

protected void okToCommit()
                   throws jobmatch.data.RefAssertionException

A stub method for implementing pre-commit assertions for this PictureDO. Implement this stub to throw an RefAssertionException for cases where this object is not valid for writing to the database.

okToDelete

protected void okToDelete()
                   throws jobmatch.data.RefAssertionException

A stub method for implementing pre-delete assertions for this PictureDO. Implement this stub to throw an RefAssertionException for cases where this object is not valid for deletion from the database.

commit

public void commit()
            throws SQLException,
                   jobmatch.data.DatabaseManagerException,
                   jobmatch.data.DataObjectException,
                   jobmatch.data.RefAssertionException,
                   jobmatch.data.DBRowUpdateException,
                   jobmatch.data.QueryException

Inserts/Updates the DO into its table.

Throws:

com.lutris.appserver.server.sql.DatabaseManagerException - if a Transaction can not be created.

jobmatch.data.RefAssertionException - thrown by okTo method.

SQLException - if any SQL errors occur.

commit

public void commit(jobmatch.data.DBTransaction dbt)
            throws SQLException,
                   jobmatch.data.DatabaseManagerException,
                   jobmatch.data.DataObjectException,
                   jobmatch.data.RefAssertionException,
                   jobmatch.data.DBRowUpdateException,
                   jobmatch.data.QueryException

Inserts/Updates the DO into its table. The transaction is likely provided by the commit() method of another DO which references this DO.

Parameters:

dbt - The transaction object to use for this operation.

Throws:

com.lutris.appserver.server.sql.DatabaseManagerException - if a Transaction can not be created.

com.lutris.appserver.server.sql.DBRowUpdateException - if a version error occurs.

jobmatch.data.RefAssertionException - thrown by okTo method.

SQLException - if any SQL errors occur.

delete

public void delete()
            throws SQLException,
                   jobmatch.data.DatabaseManagerException,
                   jobmatch.data.DataObjectException,
                   jobmatch.data.RefAssertionException,
                   jobmatch.data.DBRowUpdateException,
                   jobmatch.data.QueryException

Deletes the DO from its table.

Throws:

com.lutris.appserver.server.sql.DatabaseManagerException - if a Transaction can not be created.

jobmatch.data.RefAssertionException - thrown by okTo method.

SQLException - if any SQL errors occur.

delete

public void delete(jobmatch.data.DBTransaction dbt)
            throws SQLException,
                   jobmatch.data.DatabaseManagerException,
                   jobmatch.data.DataObjectException,
                   jobmatch.data.RefAssertionException,
                   jobmatch.data.DBRowUpdateException,
                   jobmatch.data.QueryException

Deletes the DO from its table. The transaction is likely provided by the delete() method of another DO which references this DO.

Parameters:

dbt - The transaction object to use for this operation.

Throws:

com.lutris.appserver.server.sql.DatabaseManagerException - if a Transaction can not be created.

com.lutris.appserver.server.sql.DBRowUpdateException - if a version error occurs.

jobmatch.data.RefAssertionException - thrown by okTo method.

SQLException - if any SQL errors occur.

modifyDO

protected void modifyDO(jobmatch.data.DBTransaction dbt,
                        boolean delete)
                 throws SQLException,
                        jobmatch.data.DatabaseManagerException,
                        jobmatch.data.DataObjectException,
                        jobmatch.data.RefAssertionException,
                        jobmatch.data.DBRowUpdateException,
                        jobmatch.data.QueryException

Modifies the DO within its table. Performs recursive commit/delete on referenced DOs; all operations occur within a single transaction to allow rollback in the event of error. Only the creator of the transaction releases it.

Parameters:

dbt - The transaction object to use for this operation.

delete - True if doing a delete, otherwise doing insert/update.

Throws:

com.lutris.appserver.server.sql.DatabaseManagerException - if a Transaction can not be created.

com.lutris.appserver.server.sql.DBRowUpdateException - if a version error occurs.

jobmatch.data.RefAssertionException - thrown by okTo method.

SQLException - if any SQL errors occur.