Package org.datanucleus.store.rdbms.table

Class ViewImpl

java.lang.Object

org.datanucleus.store.rdbms.table.AbstractTable

org.datanucleus.store.rdbms.table.ViewImpl

All Implemented Interfaces:

Table, org.datanucleus.store.schema.table.Table

Direct Known Subclasses:

ClassView

public abstract class ViewImpl
extends AbstractTable

Representation of a View in a datastore (RDBMS).

Field Summary

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

columns, columnsByIdentifier, dba, existsInDatastore, identifier, state, storeMgr, TABLE_STATE_INITIALIZED, TABLE_STATE_INITIALIZED_MODIFIED, TABLE_STATE_NEW, TABLE_STATE_PK_INITIALIZED, TABLE_STATE_VALIDATED

Constructor Summary

Constructors

Constructor	Description
ViewImpl(DatastoreIdentifier name, RDBMSStoreManager storeMgr)	Constructor, taking the table identifier.

Method Summary

Modifier and Type	Method	Description
protected void	addColumnInternal(Column col)	Method to add a Column to the View.
protected List<String>	getSQLDropStatements()	Internal method to generate the SQL statements for dropping the view.
void	postInitialize(org.datanucleus.ClassLoaderResolver clr)	Post initialise.
void	preInitialize(org.datanucleus.ClassLoaderResolver clr)	Pre-initialise.
boolean	validate(Connection conn, boolean validateColumnStructure, boolean autoCreate, Collection autoCreateErrors)	Method to validate the view in the datastore.

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

addColumn, allowDDLOutput, assertIsInitialized, assertIsInitializedModified, assertIsPKInitialized, assertIsPKUninitialized, assertIsUninitialized, assertIsValidated, create, drop, equals, executeDdlStatement, executeDdlStatementList, exists, getCatalogName, getClassMetaData, getColumn, getColumnForName, getColumnForPosition, getColumns, getDatastoreIdentifierFullyQualified, getDiscriminatorMetaData, getIdentifier, getMemberColumnMappingForEmbeddedMember, getMemberColumnMappingForMember, getMemberColumnMappings, getName, getNumberOfColumns, getSchemaName, getSQLCreateStatements, getStoreManager, getSurrogateColumn, getSurrogateMapping, getVersionMetaData, hasColumn, hasColumnName, hashCode, isInitialized, isInitializedModified, isPKInitialized, isValidated, tableExistsInDatastore, toString

Methods inherited from class java.lang.Object

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

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

getIdMapping, getMemberMapping, initialize

Constructor Detail

ViewImpl

public ViewImpl(DatastoreIdentifier name,
                RDBMSStoreManager storeMgr)

Constructor, taking the table identifier.

Parameters:

name - The identifier for the table.

storeMgr - The Store Manager

Method Detail

preInitialize

public void preInitialize(org.datanucleus.ClassLoaderResolver clr)

Pre-initialise. For things that must be initialised right after constructor.

Parameters:

clr - the ClassLoaderResolver

postInitialize

public void postInitialize(org.datanucleus.ClassLoaderResolver clr)

Post initialise. For things that must be set after all classes have been initialised before.

Parameters:

clr - the ClassLoaderResolver

validate

public boolean validate(Connection conn,
                        boolean validateColumnStructure,
                        boolean autoCreate,
                        Collection autoCreateErrors)
                 throws SQLException

Method to validate the view in the datastore. Validates the existence of the table, and then the specifications of the Columns.

Parameters:

conn - The JDBC Connection

validateColumnStructure - Whether to validate down to column structure, or just their existence

autoCreate - Whether to update the view to fix errors (not used).

autoCreateErrors - Errors found during the auto-create process

Returns:

Whether the database was modified

Throws:

SQLException - Thrown when an error occurs in the JDBC calls

getSQLDropStatements

protected List<String> getSQLDropStatements()

Internal method to generate the SQL statements for dropping the view.

Specified by:

getSQLDropStatements in class AbstractTable

Returns:

The List of SQL statements.

addColumnInternal

protected void addColumnInternal(Column col)

Method to add a Column to the View.

Overrides:

addColumnInternal in class AbstractTable

Parameters:

col - The column