oracle.javatools.db
Class AbstractDatabase

java.lang.Object
  oracle.javatools.db.AbstractDBObjectProvider
      oracle.javatools.db.AbstractDatabase

All Implemented Interfaces:

Database, DBObjectProvider

Direct Known Subclasses:

DDLDatabase

public abstract class AbstractDatabase
extends AbstractDBObjectProvider
implements Database

Base implementation of the Database interface. AbstractDatabase can be subclassed to provide support for specific types of databases.

Since:

9.0.5

See Also:

JdbcDatabase, BaseOracleDatabase

Field Summary

static java.lang.String

SQLSTATE_NOT_IMPLEMENTED

Fields inherited from class oracle.javatools.db.AbstractDBObjectProvider

CASE_SENSITIVE_NAME_POLICY, EMPTY_LIST, LOWER_CASE_NAME_POLICY, MIXED_CASE_NAME_POLICY, NEW_FROM_TEMPLATE_TYPE, TIMESTAMP_PROPERTY, UPPER_CASE_NAME_POLICY

Fields inherited from interface oracle.javatools.db.Database

FOUR_GIG, GENERIC_JDBC_DATABASE, SOURCE_TYPE_BODY, SOURCE_TYPE_SPEC, TWO_GIG

Fields inherited from interface oracle.javatools.db.DBObjectProvider

CREATE_PRIVILEDGE, DELETE_PRIVILEDGE, MODIFY_PRIVILEDGE, NEW_FROM_TEMPLATE_TYPE

Constructor Summary

protected

AbstractDatabase(java.lang.String connStore, java.lang.String connName, java.sql.Connection conn) Constructs a new AbstractDatabase.

Method Summary

void	cancelStatement() Cancels the Statement currently executing against this Database if: such a statement has been recorded by the use of a StatementWrapper/QueryWrapper both the DBMS and driver support aborting an SQL statement
boolean	canRestrictSchemaList() Whether this provider supports restricting the list of schemas to those with visible objects.
void	close() Closes the Database Connection (and the supplied JDBC Connection).
protected SystemObject	createByIDImpl(DBObjectID id)
protected Schema	createSchema(java.lang.String name)
boolean	exists(java.lang.String type, java.lang.String schema, java.lang.String name) Checks for existance of a schema object named objectName.
protected boolean	exists(SystemObject obj) Whether the specified object exists.
protected void	finishCreate(SystemObject[] objects, SystemObject[] oldObjects) Use to finish the create or update of objects after the changes have been made in the db.
protected void	finishDelete(Schema schema, SystemObject[] objs) Use to finish the delete of the given objects after the operation has been performed against the db.
protected void	finishDelete(SystemObject[] objs) Use to finish the delete of the given objects after the operation has been performed against the db.
protected java.lang.String	getAliveTestStatement() Returns a statement that, if executed succesfully, tests whether the given connections is live.
java.sql.Connection	getConnection() Gets the JDBC connection associated with this database.
java.sql.Connection	getConnection(boolean reconnect) Gets the JDBC connection associated with this database.
java.lang.String	getConnectionName() Retrieves the name for the Connection associated with this Database in whichever connection store it is stored in.
java.lang.String	getConnectionStore() Retrieves the connection store the Connection associated with this Database is stored in.
protected SystemObject	getCreatedObject(java.lang.String type, Schema schema, java.lang.String name) Used by finishCreate() to get the object that's just been created back from the database so that it can be verified before returning to the user.
java.lang.String	getDatabaseSource(java.lang.String objectType, Schema schema, java.lang.String objectName) Retrieves the source for an object in the database.
java.lang.String	getDatabaseSource(java.lang.String objectType, Schema schema, java.lang.String objectName, java.lang.String sourceType) Retrieves the source for an object in the database.
java.lang.String	getDatabaseType() Gets the type of database.
int	getDatabaseVersion() Gets the version of the database for the api implementation.
DDLGenerator	getDDLGenerator() Deprecated. - pushed down to DDLDatabase
Schema	getDefaultSchema() Returns the default schema for the connection or null if there isn't one.
DatabaseDescriptor	getDescriptor() Returns the DatabaseDescriptor for this provider
java.lang.String	getName() Returns an identifier for this provider.
protected <T extends SystemObject> T	getObjectImpl(DBObjectCriteria<T> criteria)
java.lang.String	getQualifiedName() Retrieves a qualified name containing the connection store and connection name.
protected java.lang.String	getTransactionTestQuery()
boolean	hasTransaction() Tests whether there is currently a "transaction" open on the underlying java.sql.Connection.
boolean	isConnectionAlive() Tests whether the connection underneath this Database is "alive" - i.e.
protected boolean	isConnectionAlive(java.sql.Connection conn) Implementation that checks whether the given (current) connection is alive.
java.lang.Boolean	isConnectionClosed(java.sql.SQLException sqe) This default implementation returns null unless the SQLException has a SQLState of "08003" - the ANSI standard for "closed connection".
boolean	isObjectValid(java.lang.String objectType, java.lang.String schema, java.lang.String objectName) Determines whether the specified database object is in a valid state.
protected boolean	isUsernameCaseInsensitive() Returns true if the username is treated as case insensitive.
protected void	reconnect()
protected void	reconnected(java.sql.Connection c) Called when a reconnect happens to (re)initialise any member appropriately on the new Connection.
protected abstract void	registerBuilders() Called to request that the DBOBjectBuilders be registered.
protected void	registerValidators() By default this registers default validators for Schema, Sequences, Synonyms, Indexes, Constraints and Columns for the wizards to use.
void	setStatement(java.sql.Statement statement) Internal use only.
protected void	sqlTrace(java.lang.String query) Deprecated. - Tracing is done automatically by the QueryWrapper implementations. DDL tracing is done automatically for implementations of DDLDatabase.
protected void	sqlTrace(java.lang.String query, java.lang.Object[] params) Deprecated. - Tracing is done automatically by the QueryWrapper implementations. DDL tracing is done automatically for implementations of DDLDatabase.
boolean	supportsDebugging() Whether this database instance supports JDWP debugging.
void	testSQLStatement(java.lang.String sql) Tests that the given SQL executes against the database.

Methods inherited from class oracle.javatools.db.AbstractDBObjectProvider

addProviderListener, cacheObject, checkCachedObject, clearAllCaches, clearCache, convertObject, createObject, createObjectImpl, createObjectManager, createSchema, deleteObject, deleteSchema, destroyCache, findByID, findObject, findObject, findSchema, fireObjectsAdded, fireObjectsRemoved, fireProviderClosed, fireProviderDeleted, fireProviderOpened, fireProviderReloaded, fireSchemaAdded, fireSchemaObjectUpdated, fireSchemaRemoved, fireSchemaUpdated, getBuilderForType, getCachedTimestamp, getCascadeManager, getCasePolicy, getDataType, getDefaultTemplateForType, getDiffEngine, getExternalName, getExternalName, getExternalTimestamp, getExternalTimestampImpl, getIdentifierQuoteString, getInternalName, getInternalName, getLogger, getObject, getObject, getObjectFactory, getObjectManager, getOrCreateDataType, getPropertyManager, getQuotedNameCasePolicy, getSchema, getSchemaObjectExpanders, getTimestamp, getTimestamp, getUniqueName, getValidatorForType, hasPriviledge, isEditable, isNewFromTemplateType, isRequestedObject, isValidName, isValidName, listObjects, listObjects, listObjects, listObjects, listObjects, listObjectsFromCache, listObjectsImpl, listObjectsImpl, listObjectsImpl, listObjectTypes, listSchemas, listSchemas, listSupportedDataTypes, logEvent, markForLazyInit, markForLazyInit, normaliseType, putCachedTimestampKey, quoteIdentifier, registerBuilder, registerExpanders, registerSchemaObjectExpander, registerType, registerValidator, removeProviderListener, resetObject, resumeTimestampQueries, schemaUpdated, setDefaultTemplateForType, supportsObjectType, supportsTimestamps, supportsTimestamps, suspendTimestampQueries, uncacheObject, unregisterBuilder, unregisterValidator, updateObject, updateObjects, updateSchema, validateName, validateName, validateObject, validateObject, validateObject, validateObject, validateObjectProperty, validateObjectProperty, validateObjectProperty, validateObjectProperty, validateSchema, validateSchema, validateUniqueName

Methods inherited from class java.lang.Object

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

Methods inherited from interface oracle.javatools.db.Database

getIdentifierQuoteString, getUserName

Methods inherited from interface oracle.javatools.db.DBObjectProvider

addProviderListener, canCreate, canDelete, createObject, createObjects, createSchema, deleteObject, deleteObjects, deleteSchema, getCascadeManager, getDataType, getDefaultTemplateForType, getDiffEngine, getExternalName, getExternalName, getInternalName, getInternalName, getObject, getObject, getObjectFactory, getObjectManager, getOrCreateDataType, getPropertyManager, getSchema, getTimestamp, getTimestamp, getUniqueName, hasPriviledge, isEditable, isNewFromTemplateType, isValidName, isValidName, listObjects, listObjects, listObjects, listObjects, listObjects, listObjectTypes, listSchemas, listSchemas, listSupportedDataTypes, quoteIdentifier, removeProviderListener, setDefaultTemplateForType, supportsObjectType, undeleteObject, undeleteObjects, updateObject, updateObjects, updateObjects, updateSchema, validateName, validateName, validateObject, validateObject, validateObject, validateObject, validateObjectProperty, validateObjectProperty, validateObjectProperty, validateObjectProperty, validateSchema, validateSchema, validateUniqueName

Field Detail

SQLSTATE_NOT_IMPLEMENTED

public static final java.lang.String SQLSTATE_NOT_IMPLEMENTED

See Also:

Constant Field Values

Constructor Detail

AbstractDatabase

protected AbstractDatabase(java.lang.String connStore,
                           java.lang.String connName,
                           java.sql.Connection conn)

Constructs a new AbstractDatabase.

Parameters:

connName - a String containing the ConnectionManager name for the connection associated with this Database

conn - the Connection used by this AbstractDatabase

Method Detail

sqlTrace

@Deprecated
protected void sqlTrace(java.lang.String query)

Deprecated. - Tracing is done automatically by the QueryWrapper implementations. DDL tracing is done automatically for implementations of DDLDatabase.

Tracing method to print out SQL that is about to be executed against the db.

sqlTrace

@Deprecated
protected void sqlTrace(java.lang.String query,
                                   java.lang.Object[] params)

Deprecated. - Tracing is done automatically by the QueryWrapper implementations. DDL tracing is done automatically for implementations of DDLDatabase.

Tracing method to print out SQL that is about to be executed against the db.

getDatabaseType

public final java.lang.String getDatabaseType()

Description copied from interface: Database

Gets the type of database. This method uses JDBC metadata to determine the database type.

Specified by:

getDatabaseType in interface Database

Returns:

an String describing the type of database

See Also:

DatabaseMetaData.getDatabaseProductName()

getDatabaseVersion

public final int getDatabaseVersion()

Description copied from interface: Database

Gets the version of the database for the api implementation. This will not numerically correspond to the database model number, but is an int that the Database implementation uses to identify different versions.

Specified by:

getDatabaseVersion in interface Database

registerValidators

protected void registerValidators()

By default this registers default validators for Schema, Sequences, Synonyms, Indexes, Constraints and Columns for the wizards to use.

getDDLGenerator

@Deprecated
public DDLGenerator getDDLGenerator()

Deprecated. - pushed down to DDLDatabase

Retrieves the DDLGenerator used by default.

Returns:

the DDLGenerator used for generating DDL

exists

protected final boolean exists(SystemObject obj)

Whether the specified object exists. Calls exists(String,String,String) with the appropriate details.

Parameters:

obj - The object being checked

Returns:

whether the object exists.

registerBuilders

protected abstract void registerBuilders()

Called to request that the DBOBjectBuilders be registered.

getConnection

public final java.sql.Connection getConnection()

Description copied from interface: Database

Gets the JDBC connection associated with this database. If the Connection is closed the Database will silently try and reconnect. If reconnect fails, the original (dead) Connection will be returned.

Code should, where possible, use one of the wrapper classes in oracle.javatools.db.execute to use a Connection and not need to directly call this method.

Specified by:

getConnection in interface Database

Returns:

the Connection owned by this database object

See Also:

Database.getConnection(boolean)

getConnection

public final java.sql.Connection getConnection(boolean reconnect)
                                        throws DBException

Description copied from interface: Database

Gets the JDBC connection associated with this database. If the given connection has been closed, the Database can attempt to reconnect it if desired. Any problem with the reconnect will be thrown as a DBException. Note that if reconnect is true, a test of the connection will be performed which hits the database using Database.isConnectionAlive().

Specified by:

getConnection in interface Database

Parameters:

reconnect - whether to try and reconnect to the db

Returns:

the Connection owned by this database object

Throws:

DBException - wrapping a SQLException if there is a problem reconnecting

isConnectionAlive

public final boolean isConnectionAlive()

Description copied from interface: Database

Tests whether the connection underneath this Database is "alive" - i.e. whether it is open and working.

Note the implementation of this is database specific - a positive can be assumed true but a negative could be incorrect.

Specified by:

isConnectionAlive in interface Database

Returns:

true if the underlying jdbc connection is working

See Also:

Database.getConnection(boolean)

isConnectionAlive

protected boolean isConnectionAlive(java.sql.Connection conn)

Implementation that checks whether the given (current) connection is alive. Implementations should not call getConnection() or similar, and only check the passed Connection object.

The calling of this method assumes that if the execution is blocked waiting for a monitor lock, the block is because of the Connection being busy and therefore alive. It is therefore illegal for any implemenation of this method to try and get the monitor lock for any object other than the connection.

Parameters:

conn - the connection to check (will not be null).

Returns:

whether the given connection is alive.

getAliveTestStatement

protected java.lang.String getAliveTestStatement()

Returns a statement that, if executed succesfully, tests whether the given connections is live. The statement must yield a positive return from Statement.execute(java.lang.String) to be a valid test (e.g. SELECT 1 FROM DUAL for Oracle).

Returns:

isConnectionClosed

public java.lang.Boolean isConnectionClosed(java.sql.SQLException sqe)

This default implementation returns null unless the SQLException has a SQLState of "08003" - the ANSI standard for "closed connection". Few JDBC drivers adhere to the standard, so for all other exceptions this method will return null indicating that the exception cannot be identified. Consequently for the connection closed support to work a Database implementation should override this method.

Specified by:

isConnectionClosed in interface Database

Parameters:

sqe - the exception to test

Returns:

true if the connection signifies that the connection is closed.

hasTransaction

public boolean hasTransaction()

Description copied from interface: Database

Tests whether there is currently a "transaction" open on the underlying java.sql.Connection.

Note the implementation of this is database specific - a positive can be assumed true but a negative could be incorrect.

Specified by:

hasTransaction in interface Database

Returns:

true we are able to determine that a transaction is currently open on the underlying jdbc connection.

getTransactionTestQuery

protected java.lang.String getTransactionTestQuery()

testSQLStatement

public void testSQLStatement(java.lang.String sql)
                      throws DBException

Description copied from interface: Database

Tests that the given SQL executes against the database. This is separate to the SQLQueryBuilder API and is a simple test against the database.

Specified by:

testSQLStatement in interface Database

Parameters:

sql - the sql to test

Throws:

InvalidSQLException - if the sql doesn't execute (because the syntax is invalid etc).

DBException - for any other error in executing the sql

getName

public final java.lang.String getName()

Description copied from class: AbstractDBObjectProvider

Returns an identifier for this provider.

Specified by:

getName in class AbstractDBObjectProvider

getConnectionName

public final java.lang.String getConnectionName()

Description copied from interface: Database

Retrieves the name for the Connection associated with this Database in whichever connection store it is stored in.

Specified by:

getConnectionName in interface Database

Returns:

a String containing the connection name

See Also:

Database.getConnectionStore(), Database.getQualifiedName()

getConnectionStore

public final java.lang.String getConnectionStore()

Description copied from interface: Database

Retrieves the connection store the Connection associated with this Database is stored in. This is not a displayable string.

Specified by:

getConnectionStore in interface Database

Returns:

a String containing the connection store identifier.

See Also:

Database.getQualifiedName()

getQualifiedName

public final java.lang.String getQualifiedName()

Description copied from interface: Database

Retrieves a qualified name containing the connection store and connection name. The string is encoded so that it can be used as part of a URL. This is not a displayable string.

If this connection has no connection store associated with it, this method will simply return the encoded connection name.

Specified by:

getQualifiedName in interface Database

Returns:

a String containing the encoded, qualified name.

See Also:

Database.getConnectionStore(), Database.getConnectionName()

reconnect

protected void reconnect()
                  throws DBException

Throws:

DBException

reconnected

protected void reconnected(java.sql.Connection c)

Called when a reconnect happens to (re)initialise any member appropriately on the new Connection.

Parameters:

c - the connection to initialise on

close

public void close()

Description copied from interface: Database

Closes the Database Connection (and the supplied JDBC Connection).

Specified by:

close in interface Database

exists

public boolean exists(java.lang.String type,
                      java.lang.String schema,
                      java.lang.String name)

Description copied from interface: Database

Checks for existance of a schema object named objectName.

Specified by:

exists in interface Database

name - The name of the schema object.

Returns:

true if the object exists, false otherwise.

isObjectValid

public boolean isObjectValid(java.lang.String objectType,
                             java.lang.String schema,
                             java.lang.String objectName)

Description copied from interface: Database

Determines whether the specified database object is in a valid state.

Specified by:

isObjectValid in interface Database

Parameters:

objectType - the type of the object.

schema - the name of the schema containing the object

objectName - the name of the object

createSchema

protected final Schema createSchema(java.lang.String name)

finishCreate

protected void finishCreate(SystemObject[] objects,
                            SystemObject[] oldObjects)
                     throws DBException

Use to finish the create or update of objects after the changes have been made in the db. This method will sort out any cache updates and fire approriate provider messages.

Throws:

DBException

getCreatedObject

protected SystemObject getCreatedObject(java.lang.String type,
                                        Schema schema,
                                        java.lang.String name)
                                 throws DBException

Used by finishCreate() to get the object that's just been created back from the database so that it can be verified before returning to the user. By default this just calls AbstractDBObjectProvider.getObject(String,Schema,String)

Throws:

DBException

See Also:

finishCreate(oracle.javatools.db.SystemObject[], oracle.javatools.db.SystemObject[])

finishDelete

protected void finishDelete(SystemObject[] objs)

Use to finish the delete of the given objects after the operation has been performed against the db. Calls overloaded finishDelete for each schema that the given objects are owned by.

See Also:

#finishDelete(Schema,SchemaObject[])

finishDelete

protected void finishDelete(Schema schema,
                            SystemObject[] objs)

Use to finish the delete of the given objects after the operation has been performed against the db. The cache is updated, delete cascaded to any already built objects and any messages fired.

createByIDImpl

protected SystemObject createByIDImpl(DBObjectID id)
                               throws DBException

Overrides:

createByIDImpl in class AbstractDBObjectProvider

Throws:

DBException

getDatabaseSource

public java.lang.String getDatabaseSource(java.lang.String objectType,
                                          Schema schema,
                                          java.lang.String objectName)
                                   throws DBException

Description copied from interface: Database

Retrieves the source for an object in the database. The specified object is assumed to be of some type that represents source; non-source based objects will return null.

Specified by:

getDatabaseSource in interface Database

Parameters:

objectType - The type of object for which the source is needed

schema - The Schema containing the object

objectName - The name of the object

Returns:

The source representing the object

Throws:

DBException - if an error occurs fetching the source

getDatabaseSource

public java.lang.String getDatabaseSource(java.lang.String objectType,
                                          Schema schema,
                                          java.lang.String objectName,
                                          java.lang.String sourceType)
                                   throws DBException

Description copied from interface: Database

Retrieves the source for an object in the database. The specified object is assumed to be of some type that represents source; non-source based objects will return null. This method combines spec and body for those source types that support both.

Specified by:

getDatabaseSource in interface Database

Parameters:

objectType - The type of object for which the source is needed

schema - The Schema containing the object

objectName - The name of the object

sourceType - In the case of types that have more than one source, the type of source required. Can be Database.SOURCE_TYPE_SPEC or Database.SOURCE_TYPE_BODY. If null, the default of body is selected.

Returns:

The source representing the object

Throws:

DBException - if an error occurs fetching the source

getDefaultSchema

public Schema getDefaultSchema()
                        throws DBException

Returns the default schema for the connection or null if there isn't one. If the database doesn't support schemas, returns an anonymous schema.

Specified by:

getDefaultSchema in interface DBObjectProvider

Throws:

DBException

isUsernameCaseInsensitive

protected boolean isUsernameCaseInsensitive()

Returns true if the username is treated as case insensitive. This default implementation returns true. Override when it isn't true, e.g. MySQL, Sybase

supportsDebugging

public boolean supportsDebugging()

Description copied from interface: Database

Whether this database instance supports JDWP debugging. If the database does not support debugging, or only supports debugging using a custom protocol, this method should return false.

Specified by:

supportsDebugging in interface Database

Returns:

true if JDWP debugging is supported against this database, false otherwise

getObjectImpl

protected <T extends SystemObject> T getObjectImpl(DBObjectCriteria<T> criteria)
                                        throws DBException

Overrides:

getObjectImpl in class AbstractDBObjectProvider

Throws:

DBException

getDescriptor

public DatabaseDescriptor getDescriptor()

Description copied from interface: DBObjectProvider

Returns the DatabaseDescriptor for this provider

Specified by:

getDescriptor in interface DBObjectProvider

canRestrictSchemaList

public boolean canRestrictSchemaList()

Description copied from interface: Database

Whether this provider supports restricting the list of schemas to those with visible objects. For some providers, determining this list may be significantly more expensive than just returning a raw list of schemas.

Specified by:

canRestrictSchemaList in interface Database

Returns:

whether this provider allows the schema list to be restricted to those schemas with visible objects

setStatement

public void setStatement(java.sql.Statement statement)

Internal use only. Sets the current statement being executed against the database.

Parameters:

statement - the Statement being executed

Throws:

java.lang.IllegalArgumentException - if a non-null Statement is passed and there is already a non-null Statement recorded against the AbstractDatabase

For internal use only. Application developers should not use this

cancelStatement

public void cancelStatement()

Cancels the Statement currently executing against this Database if:

1. such a statement has been recorded by the use of a StatementWrapper/QueryWrapper
2. both the DBMS and driver support aborting an SQL statement