org.jpox.store.rdbms.table
Class TableImpl

java.lang.Object
  org.jpox.store.rdbms.table.AbstractTable
      org.jpox.store.rdbms.table.TableImpl

All Implemented Interfaces:

DatastoreContainerObject, DatastoreObject, Table

Direct Known Subclasses:

AbstractClassTable, JoinTable, ProbeTable, SchemaTable, SequenceTable

public abstract class TableImpl
extends AbstractTable

Class representing a table in a datastore (RDBMS). Provides a series of methods for validating the aspects of the table, namely

• validate - Validate the table
• validateColumns - Validate the columns in the table
• validatePrimaryKey - Validate the primary key
• validateIndices - Validate the indices on the table
• validateForeignKeys - Validate all FKs for the table
• validateConstraints - Validate the indices and FKs.

Version:

$Revision: 1.46 $

Field Summary

Fields inherited from class org.jpox.store.rdbms.table.AbstractTable

columns, columnsByName, dba, ddlDumpWriter, identifier, LOCALISER, state, storeMgr

Fields inherited from interface org.jpox.store.rdbms.table.Table

TABLE_STATE_INITIALIZED, TABLE_STATE_INITIALIZED_MODIFIED, TABLE_STATE_NEW, TABLE_STATE_PK_INITIALIZED, TABLE_STATE_VALIDATED, TABLE_TYPE_MISSING, TABLE_TYPE_TABLE, TABLE_TYPE_UNKNOWN, TABLE_TYPE_VIEW

Constructor Summary

TableImpl(DatastoreIdentifier name, RDBMSManager storeMgr)
Constructor.

Method Summary

void	dropConstraints(java.sql.Connection conn) Method to drop the constraints for the table from the datastore.
protected java.util.List	getExpectedCandidateKeys() Accessor for the expected candidate keys for this table in the datastore.
protected java.util.List	getExpectedForeignKeys(ClassLoaderResolver clr) Accessor for the expected foreign keys for this table in the datastore.
protected java.util.Set	getExpectedIndices(ClassLoaderResolver clr) Accessor for the indices for this table in the datastore.
PrimaryKey	getPrimaryKey() Accessor for the primary key for this table.
protected java.util.Map	getSQLAddCandidateKeyStatements(java.util.Map actualCandidateKeysByName) Get SQL statements to add expected Candidate Keys that are not yet on the table.
protected java.util.Map	getSQLAddFKStatements(java.util.Map actualForeignKeysByName, ClassLoaderResolver clr) Get SQL statements to add expected Foreign Keys that are not yet at the table.
protected java.util.Map	getSQLCreateIndexStatements(java.util.Map actualIndicesByName, ClassLoaderResolver clr) Accessor for the CREATE INDEX statements for this table.
protected java.util.List	getSQLCreateStatements(java.util.Properties props) Accessor for the SQL CREATE statements for this table.
protected java.util.List	getSQLDropStatements() Accessor for the DROP statements for this table.
void	initializeColumnInfoForPrimaryKeyColumns(java.sql.Connection conn) Utility to load the structure/metadata of columns of the table.
void	initializeColumnInfoFromDatastore(java.sql.Connection conn) Initialize the default value for columns if null using the values from the datastore.
void	postInitialize(ClassLoaderResolver clr) Post initilize.
void	preInitialize(ClassLoaderResolver clr) Pre initilize.
boolean	validate(java.sql.Connection conn, boolean validateColumnStructure, boolean autoCreate, java.util.Collection autoCreateErrors) Method to validate the table in the datastore.
boolean	validateColumns(java.sql.Connection conn, boolean validateColumnStructure, boolean autoCreate, java.util.Collection autoCreateErrors) Utility to validate the columns of the table.
boolean	validateConstraints(java.sql.Connection conn, boolean autoCreate, java.util.Collection autoCreateErrors, ClassLoaderResolver clr) Method to validate any constraints, and auto create them if required.
protected boolean	validatePrimaryKey(java.sql.Connection conn) Utility method to validate the primary key of the table.

Methods inherited from class org.jpox.store.rdbms.table.AbstractTable

addColumnInternal, addDatastoreField, allowDdlDump, assertIsInitialized, assertIsInitializedModified, assertIsPKInitialized, assertIsPKUninitialized, assertIsUninitialized, assertIsValidated, create, drop, equals, executeDdlStatement, executeDdlStatementList, exists, getCatalogName, getDatastoreIdentifierFullyQualified, getDiscriminatorMapping, getDiscriminatorMetaData, getIdentifier, getSchemaName, getStoreManager, getVersionMapping, getVersionMetaData, hasColumnName, hasDatastoreField, hashCode, isDumpingDdl, isInitialized, isInitializedModified, isPKInitialized, isValidated, setDdlDumpWriter, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jpox.store.rdbms.table.Table

initialize

Methods inherited from interface org.jpox.store.DatastoreContainerObject

getFieldMapping, getIDMapping

Constructor Detail

TableImpl

public TableImpl(DatastoreIdentifier name,
                 RDBMSManager storeMgr)

Constructor.

Parameters:

name - The name of the table (in SQL).

storeMgr - The StoreManager for this table.

Method Detail

initializeColumnInfoFromDatastore

public void initializeColumnInfoFromDatastore(java.sql.Connection conn)
                                       throws java.sql.SQLException

Initialize the default value for columns if null using the values from the datastore.

Parameters:

conn - The JDBC Connection

Throws:

java.sql.SQLException - Thrown if an error occurs in the default initialisation.

preInitialize

public void preInitialize(ClassLoaderResolver clr)

Pre initilize. For things that must be initialized right after constructor

Parameters:

clr - the ClassLoaderResolver

postInitialize

public void postInitialize(ClassLoaderResolver clr)

Post initilize. For things that must be set after all classes have been initialized before

Parameters:

clr - the ClassLoaderResolver

getPrimaryKey

public PrimaryKey getPrimaryKey()

Accessor for the primary key for this table. Will always return a PrimaryKey but if we have defined no columns, the pk.size() will be 0.

Returns:

The primary key.

validate

public boolean validate(java.sql.Connection conn,
                        boolean validateColumnStructure,
                        boolean autoCreate,
                        java.util.Collection autoCreateErrors)
                 throws java.sql.SQLException

Method to validate the table in the datastore.

Parameters:

conn - The JDBC Connection

validateColumnStructure - Whether to validate the column structure, or just the column existence

autoCreate - Whether to update the table to fix any validation errors. Only applies to missing columns.

autoCreateErrors - Exceptions found in the "auto-create" process

Returns:

Whether the database was modified

Throws:

java.sql.SQLException - Thrown when an error occurs in the JDBC calls

validateColumns

public boolean validateColumns(java.sql.Connection conn,
                               boolean validateColumnStructure,
                               boolean autoCreate,
                               java.util.Collection autoCreateErrors)
                        throws java.sql.SQLException

Utility to validate the columns of the table. Will throw a MissingColumnException if a column is not found (and is not required to auto create it)

Parameters:

conn - Connection to use for validation

validateColumnStructure - Whether to validate down to the structure of the columns, or just their existence

autoCreate - Whether to auto create any missing columns

autoCreateErrors - Exceptions found in the "auto-create" process

Returns:

Whether it validates

Throws:

java.sql.SQLException - Thrown if an error occurs in the validation process

initializeColumnInfoForPrimaryKeyColumns

public void initializeColumnInfoForPrimaryKeyColumns(java.sql.Connection conn)
                                              throws java.sql.SQLException

Utility to load the structure/metadata of columns of the table.

Parameters:

conn - Connection to use for validation

Throws:

java.sql.SQLException - Thrown if an error occurs in the initialization process

validatePrimaryKey

protected boolean validatePrimaryKey(java.sql.Connection conn)
                              throws java.sql.SQLException

Utility method to validate the primary key of the table. Will throw a WrongPrimaryKeyException if the PK is incorrect. TODO Add an auto_create parameter on this

Parameters:

conn - Connection to use

Returns:

Whether it validates

Throws:

java.sql.SQLException - When an error occurs in the valdiation

validateConstraints

public boolean validateConstraints(java.sql.Connection conn,
                                   boolean autoCreate,
                                   java.util.Collection autoCreateErrors,
                                   ClassLoaderResolver clr)
                            throws java.sql.SQLException

Method to validate any constraints, and auto create them if required.

Parameters:

conn - The JDBC Connection

autoCreate - Whether to auto create the constraints if not existing

autoCreateErrors - Errors found in the "auto-create" process

clr - The ClassLoaderResolver

Returns:

Whether the database was modified

Throws:

java.sql.SQLException - Thrown when an error occurs in the JDBC calls

dropConstraints

public void dropConstraints(java.sql.Connection conn)
                     throws java.sql.SQLException

Method to drop the constraints for the table from the datastore.

Parameters:

conn - The JDBC Connection

Throws:

java.sql.SQLException - Thrown when an error occurs in the JDBC call.

getExpectedForeignKeys

protected java.util.List getExpectedForeignKeys(ClassLoaderResolver clr)

Accessor for the expected foreign keys for this table in the datastore. Currently only checks the columns for referenced tables (i.e relationships) and returns those.

Parameters:

clr - The ClassLoaderResolver

Returns:

List of foreign keys.

getExpectedCandidateKeys

protected java.util.List getExpectedCandidateKeys()

Accessor for the expected candidate keys for this table in the datastore. Currently returns an empty list.

Returns:

List of candidate keys.

getExpectedIndices

protected java.util.Set getExpectedIndices(ClassLoaderResolver clr)

Accessor for the indices for this table in the datastore.

Parameters:

clr - The ClassLoaderResolver

Returns:

Set of indices expected.

getSQLCreateStatements

protected java.util.List getSQLCreateStatements(java.util.Properties props)

Accessor for the SQL CREATE statements for this table.

Specified by:

getSQLCreateStatements in class AbstractTable

Parameters:

props - Properties for controlling the table creation

Returns:

List of statements.

getSQLAddFKStatements

protected java.util.Map getSQLAddFKStatements(java.util.Map actualForeignKeysByName,
                                              ClassLoaderResolver clr)

Get SQL statements to add expected Foreign Keys that are not yet at the table. If the returned Map is empty, the current FK setup is correct.

Parameters:

actualForeignKeysByName - Actual Map of foreign keys

clr - The ClassLoaderResolver

Returns:

a Map with the SQL statements

getSQLAddCandidateKeyStatements

protected java.util.Map getSQLAddCandidateKeyStatements(java.util.Map actualCandidateKeysByName)

Get SQL statements to add expected Candidate Keys that are not yet on the table. If the returned Map is empty, the current Candidate Key setup is correct.

Parameters:

actualCandidateKeysByName - Actual Map of candidate keys

Returns:

a Map with the SQL statements

getSQLCreateIndexStatements

protected java.util.Map getSQLCreateIndexStatements(java.util.Map actualIndicesByName,
                                                    ClassLoaderResolver clr)

Accessor for the CREATE INDEX statements for this table.

Parameters:

actualIndicesByName - Map of actual indexes

clr - The ClassLoaderResolver

Returns:

Map of statements

getSQLDropStatements

protected java.util.List getSQLDropStatements()

Accessor for the DROP statements for this table.

Specified by:

getSQLDropStatements in class AbstractTable

Returns:

List of statements