oracle.javatools.db
Interface DBObjectProvider

All Known Subinterfaces:

Database, JdbcDatabase, OracleDatabase, OracleDatabaseXE

All Known Implementing Classes:

AbstractDatabase, AbstractDBObjectProvider, DDLDatabase, DictionaryDatabase, OfflineDBObjectProvider

public interface DBObjectProvider

The DBObjectProvider interface provides clients with access to database objects. Depending on the implementation, these objects may be defined in an existing database or locally.

The services provided by DBObjectProvider include:

• Listing existing objects by type.
• Retrieving the model for an existing object.
• Validating object models.
• Creating new objects
• Deleting existing objects

A DBObjectProvider can be retrieved through the DBObjectProviderFactory if the identifier is known for that provider. For more information see @link{DBObjectProviderFactory}.

The api provides a listener mechanism for a DBObjectProvider so that if objects are added, removed or updated through the DBObjectProvider a registered DBObjectProviderListener will be notified of those events.

See Also:

oracle.javatools.db, DBObjectProviderFactory, Database, DBObjectProviderListener

Field Summary

static java.lang.String	CREATE_PRIVILEDGE Permission to create an object.
static java.lang.String	DELETE_PRIVILEDGE Permission to delete an object.
static java.lang.String	MODIFY_PRIVILEDGE Permission to modify an object.
static java.lang.String	NEW_FROM_TEMPLATE_TYPE

Method Summary

void	addProviderListener(DBObjectProviderListener list) Adds the given listener to the list of registered listener for events on this provider.
boolean	canCreate(Schema schema, boolean replace) Whether an attempt to create the specified schema is likely to succeed.
boolean	canCreate(SchemaObject object, boolean replace) Whether an attempt to create the specified object is likely to succeed.
boolean	canDelete(Schema schema, boolean cascade) Checks to see whether a specific schema can be deleted.
boolean	canDelete(SchemaObject object, boolean cascade) Checks to see whether a specific object can be deleted.
void	createObject(SchemaObject object, boolean replace) Causes the creation of the object described by the specified meta data.
void	createObjects(SchemaObject[] objects, boolean replace) Causes the creation of the objects described by the specified meta data.
void	createSchema(Schema schema, boolean replace) Causes the creation of a new Schema in the persistent storage.
void	deleteObject(SchemaObject object, boolean cascade) Deletes the object.
void	deleteObjects(SchemaObject[] objects, boolean cascade) Deletes the objects.
void	deleteSchema(Schema schema, boolean cascade) Deletes the schema.
DataType	getDataType(java.lang.String typeName) Retrieves the datatype represented by a specific name.
Schema	getDefaultSchema() Returns the default schema for the provider.
SchemaObject	getDefaultTemplateForType(java.lang.String type) Returns the default template object for the given type, or null if none defined
DatabaseDescriptor	getDescriptor() Returns the DatabaseDescriptor for this provider
DiffEngine	getDiffEngine() Returns a diff engine setup with the appropriate set of differs for object updating.
java.lang.String	getExternalName(java.lang.String name) Converts the specified name into the format used externally to represent the identifier.
java.lang.String	getExternalName(java.lang.String name, java.lang.String objectType) Converts the specified name into the format used externally to represent the identifier.
java.lang.String	getIdentifierQuoteString() Retrieves the string used to quote identifiers.
java.lang.String	getInternalName(java.lang.String name) Converts the specified name into the format used internally within the metadata.
java.lang.String	getInternalName(java.lang.String name, java.lang.String objectType) Converts the specified name into the format used internally within the metadata.
SchemaObject	getObject(java.lang.String objectType, Schema schema, java.lang.String name) Retrieves the SchemaObject representing a specific database object.
SchemaObjectManager	getObjectManager() DO NOT USE this method until Mark has reviewed its inclusion in the API.
DataType	getOrCreateDataType(java.lang.String typeName) Retrieves the datatype represented by a specific name.
Schema	getSchema(java.lang.String name) Retrieves the Schema object associated with a specific name.
java.lang.Long	getTimestamp(DBObjectID id)
java.lang.Long	getTimestamp(java.lang.String objectType, Schema schema, java.lang.String name) Retrieves the timestamp representing the last modification time of the specified object's metadata.
java.lang.String	getUniqueName(java.lang.String type, DBObject contextObject, java.lang.String base) Retrieves a unique name for an object of a specific type.
boolean	hasPriviledge(java.lang.String type, Schema schema, java.lang.String priv) Checks to see whether the user has the requisite permissions to perform the specified operation.
boolean	isEditable(DBObject object) Returns whether or not the object can be edited
boolean	isNewFromTemplateType(java.lang.String type)
boolean	isValidName(java.lang.String name) Deprecated. - use isValidName( String type, String name )
boolean	isValidName(java.lang.String type, java.lang.String name) Checks to see whether a name is valid.
SchemaObject[]	listObjects(java.lang.String[] objectTypes, Schema schema) Lists the objects of multiple types available from this provider.
SchemaObject[]	listObjects(java.lang.String[] objectTypes, Schema schema, java.lang.String ref) Lists the objects of multiple types available from this provider.
java.lang.String[]	listObjects(java.lang.String objectType, Schema schema) Lists the objects of a given type available from this provider.
java.lang.String[]	listObjects(java.lang.String objectType, Schema schema, java.lang.String ref) Lists the objects of a given type available from this provider.
java.lang.String[]	listObjectTypes() Lists the database object types supported by this DBObjectProvider.
Schema[]	listSchemas() Retrieves the list of schemas available from this provider regardless of their visibility to the user.
Schema[]	listSchemas(boolean showAll) Retrieves the list of schemas available from this provider.
DataType[]	listSupportedDataTypes() Retrieves the list of datatypes supported by this provider.
java.lang.String	quoteIdentifier(java.lang.String name, boolean force) Quotes the specified identifier name, if needed.
void	removeProviderListener(DBObjectProviderListener list) Removes the given listener from the list of registered listener for events on this provider.
void	setDefaultTemplateForType(java.lang.String type, SchemaObject template) Sets the default template object for the given type.
boolean	supportsObjectType(java.lang.String type) Convinience method to check whether this provider supports the given object type - i.e.
void	undeleteObject(SchemaObject object) Undeletes the object, i.e.
void	undeleteObjects(SchemaObject[] objects) Undeletes the objects, i.e.
void	updateObject(SchemaObject oldObject, SchemaObject newObject) Updates the definition of an object.
void	updateObjects(ResultSet rs, boolean replace, boolean cascade) Updates the definition of a set of objects.
void	updateObjects(SchemaObject[] oldObjects, SchemaObject[] newObjects) Updates the definition of a set of objects.
void	updateSchema(Schema oldSchema, Schema newSchema) Updates the definition of a Schema.
void	validateName(java.lang.String name) Deprecated. - use validateName( String type, String name )
void	validateName(java.lang.String type, java.lang.String name) Checks to see whether a name is valid for a given type of object.
void	validateObject(DBObject object) Checks to see if the object is valid.
void	validateObject(DBObject original, DBObject updated) Checks to see if the object update is valid.
void	validateObject(DBObject original, DBObject updated, java.lang.String property) Deprecated. use validateObjectProperty(DBObject,DBObject,Object)
void	validateObject(DBObject object, java.lang.String property) Deprecated. use validateObjectProperty(DBObject,Object)
void	validateObjectProperty(DBObject original, DBObject updated, java.lang.Object property) Checks to see if the updated children of a given object are valid.
void	validateObjectProperty(DBObject object, java.lang.Object property) Checks to see if the children of a given object are valid.
void	validateSchema(Schema schema) Deprecated. use validateObject(DBObject object)
void	validateSchema(Schema original, Schema updated) Deprecated. use validateObject(DBObject original, DBObject updated)
void	validateUniqueName(java.lang.String type, DBObject contextObject, java.lang.String name) Validates that a name is not used within a context DBObject, and throws NameInUseException if it is.

Field Detail

CREATE_PRIVILEDGE

static final java.lang.String CREATE_PRIVILEDGE

Permission to create an object.

See Also:

hasPriviledge(java.lang.String, oracle.javatools.db.Schema, java.lang.String), Constant Field Values

DELETE_PRIVILEDGE

static final java.lang.String DELETE_PRIVILEDGE

Permission to delete an object.

See Also:

hasPriviledge(java.lang.String, oracle.javatools.db.Schema, java.lang.String), Constant Field Values

MODIFY_PRIVILEDGE

static final java.lang.String MODIFY_PRIVILEDGE

Permission to modify an object.

See Also:

hasPriviledge(java.lang.String, oracle.javatools.db.Schema, java.lang.String), Constant Field Values

NEW_FROM_TEMPLATE_TYPE

static final java.lang.String NEW_FROM_TEMPLATE_TYPE

See Also:

Constant Field Values

Method Detail

addProviderListener

void addProviderListener(DBObjectProviderListener list)

Adds the given listener to the list of registered listener for events on this provider.

See Also:

DBObjectProviderListener

removeProviderListener

void removeProviderListener(DBObjectProviderListener list)

Removes the given listener from the list of registered listener for events on this provider.

See Also:

DBObjectProviderListener

canCreate

boolean canCreate(SchemaObject object,
                  boolean replace)

Whether an attempt to create the specified object is likely to succeed.

Parameters:

object - the SchemaObject describing the object to create

replace - whether to replace an existing object. If replace is false and the object exists, canCreate must return false.

Returns:

whether the create will succeed.

createObject

void createObject(SchemaObject object,
                  boolean replace)
                  throws DBException

Causes the creation of the object described by the specified meta data.

Parameters:

object - the SchemaObject describing the object to create.

replace - whether to replace an existing object. If replace is false and the object exists, createObject will fail.

Throws:

DBException - if an error is encountered creating the object.

createObjects

void createObjects(SchemaObject[] objects,
                   boolean replace)
                   throws DBException

Causes the creation of the objects described by the specified meta data.

Parameters:

objects - the SchemaObject[] describing the objects to create.

replace - whether to replace an existing objects. If replace is false and the object exists, createObjects will fail.

Throws:

DBException - if an error is encountered creating the objects.

deleteObject

void deleteObject(SchemaObject object,
                  boolean cascade)
                  throws DBException

Deletes the object.

Parameters:

object - the object to delete

cascade - whether to delete dependent objects

Throws:

DBException - if an error is encountered performing the delete

deleteObjects

void deleteObjects(SchemaObject[] objects,
                   boolean cascade)
                   throws DBException

Deletes the objects.

Parameters:

objects - the objects to delete

cascade - whether to delete dependent objects

Throws:

DBException - if an error is encountered performing the delete

undeleteObject

void undeleteObject(SchemaObject object)
                    throws DBException

Undeletes the object, i.e. removes it from the recycle bin. In Oracle, only tables and indexes can be undeleted.

Parameters:

object - the object to be undeleted

Throws:

DBException - if an error is encountered performing the undelete

undeleteObjects

void undeleteObjects(SchemaObject[] objects)
                     throws DBException

Undeletes the objects, i.e. removes them from the recycle bin. In Oracle, only tables and indexes can be undeleted.

Parameters:

objects - the objects to be undeleted

Throws:

DBException - if an error is encountered performing the undelete

hasPriviledge

boolean hasPriviledge(java.lang.String type,
                      Schema schema,
                      java.lang.String priv)

Checks to see whether the user has the requisite permissions to perform the specified operation. For example, whether the user has permission to create a new table in a specific schema.

Parameters:

type - the object type on which the operation is being performed.

schema - the schema to check. A value of null checks for the current schema.

priv - a pre-defined operation.

Returns:

whether the specified operation can be completed.

getUniqueName

java.lang.String getUniqueName(java.lang.String type,
                               DBObject contextObject,
                               java.lang.String base)

Retrieves a unique name for an object of a specific type. If base is unique, it returns base, otherwise, if base is suffixed with a number, it increments the number until it finds a unique name. If base isn't suffixed with a number, it appends 1 and increments the number until it finds a unique name.

Parameters:

type - is the type of object to get the name for

contextObject - is the database object context to use when determining the uniqueness of the name

base - is the base name to use. If base is null or zero length, the type name suffixed with 1 is used.

Returns:

a unique name for the given object type.

validateUniqueName

void validateUniqueName(java.lang.String type,
                        DBObject contextObject,
                        java.lang.String name)
                        throws NameInUseException

Validates that a name is not used within a context DBObject, and throws NameInUseException if it is. The NameInUseException should contain the name, and the DBObject containing the name.

Parameters:

type - : the type of name being validated

contextObject - : the database object context to use when determining the uniqueness of the name

name - : the name to be checked

Throws:

NameInUseException

isValidName

@Deprecated
boolean isValidName(java.lang.String name)

Deprecated. - use isValidName( String type, String name )

Checks to see whether a name is valid. Note that a valid name does not guarantee uniqueness.

Parameters:

name - the name to check

Returns:

whether the name is valid

See Also:

isValidName(java.lang.String, java.lang.String)

isValidName

boolean isValidName(java.lang.String type,
                    java.lang.String name)

Checks to see whether a name is valid. Note that a valid name does not guarantee uniqueness.

Parameters:

name - the name to check

type - the type of object the name is intended for

Returns:

whether the name is valid

Since:

11.0

validateName

@Deprecated
void validateName(java.lang.String name)
                  throws InvalidNameException

Deprecated. - use validateName( String type, String name )

Checks to see whether a name is valid. Note that a valid name does not guarantee uniqueness.

Parameters:

name - the name to check

Throws:

InvalidNameException - with appropriate message if the name is invalid.

See Also:

validateName(java.lang.String, java.lang.String)

validateName

void validateName(java.lang.String type,
                  java.lang.String name)
                  throws InvalidNameException

Checks to see whether a name is valid for a given type of object. Note that a valid name does not guarantee uniqueness.

Parameters:

name - the name to check

type - the type of object that the name is intended for (e.g. Table.TYPE )

Throws:

InvalidNameException - with appropriate message if the name is invalid.

Since:

11.0

quoteIdentifier

java.lang.String quoteIdentifier(java.lang.String name,
                                 boolean force)
                                 throws DBException

Quotes the specified identifier name, if needed.

Parameters:

name - the name to quote

force - whether to quote even if the identifier is valid already.

Returns:

the quoted name

Throws:

DBException - if the name when quoted is still invalid

getInternalName

java.lang.String getInternalName(java.lang.String name)

Converts the specified name into the format used internally within the metadata. Generally, internal names are not quoted; quoted names have the quotes removed. Unquoted names may be converted to a single case if the underlying provider does not support mixed case identifiers.

Parameters:

name - a String containing the name to convert

Returns:

the internal version of the name

getInternalName

java.lang.String getInternalName(java.lang.String name,
                                 java.lang.String objectType)

Converts the specified name into the format used internally within the metadata. Generally, internal names are not quoted; quoted names have the quotes removed. Unquoted names may be converted to a single case if the underlying provider does not support mixed case identifiers.

Parameters:

name - a String containing the name to convert

objectType - a String containing the type of object being named

Returns:

the internal version of the name

getExternalName

java.lang.String getExternalName(java.lang.String name)

Converts the specified name into the format used externally to represent the identifier. In most case, this is equivalent to calling quoteIdentifier, specifying false for the force argument. Note, however, that exceptions are not thrown; rather, the original name will be returned.

Parameters:

name - a String containing the name to externalize

Returns:

a String containing the externalized name

getExternalName

java.lang.String getExternalName(java.lang.String name,
                                 java.lang.String objectType)

Converts the specified name into the format used externally to represent the identifier. In most case, this is equivalent to calling quoteIdentifier, specifying false for the force argument. Note, however, that exceptions are not thrown; rather, the original name will be returned.

Parameters:

name - a String containing the name to externalize

objectType - a String containing the type of object being named

Returns:

a String containing the externalized name

getIdentifierQuoteString

java.lang.String getIdentifierQuoteString()

Retrieves the string used to quote identifiers. By default, the quote string is assumed to be ". If the quoting of identifiers is not supported by a subclass, that subclass should return null.

Returns:

the string containing the character or characters used to quote an identifier.

getDescriptor

DatabaseDescriptor getDescriptor()

Returns the DatabaseDescriptor for this provider

canDelete

boolean canDelete(SchemaObject object,
                  boolean cascade)

Checks to see whether a specific object can be deleted.

Parameters:

object - the object to check

cascade - whether to assume a cascading delete should be used.

Returns:

whether the delete, if attempted, would succeed.

validateObject

void validateObject(DBObject object)
                    throws ValidationException

Checks to see if the object is valid. If the object is a child object (e.g. a Column) this will not validate its place in the parent, only the individual DBObject definition.

Parameters:

object - The object to validate

Throws:

ValidationException - if the object is not valid. The exception will describe the validation failure. A MissingValidatorException is thrown if the provider has no validator for the given object type.

validateObject

@Deprecated
void validateObject(DBObject object,
                               java.lang.String property)
                    throws ValidationException

Deprecated. use validateObjectProperty(DBObject,Object)

Throws:

ValidationException

validateObjectProperty

void validateObjectProperty(DBObject object,
                            java.lang.Object property)
                            throws ValidationException

Checks to see if the children of a given object are valid. If the object has no children of the given type a MissingValidatorException will be thrown. This is a convinience method to perform validation to a specific property on an object - all properties will be validated if validateObject(DBObject) is called.

Parameters:

object - The object to validate

property - An identifier for a specific property to validate

Throws:

ValidationException - if the object is not valid. The exception will describe the validation failure. A MissingValidatorException is thrown if the provider has no validator for the given object type, or property.

validateObject

void validateObject(DBObject original,
                    DBObject updated)
                    throws ValidationException

Checks to see if the object update is valid.

Parameters:

object - The original object

object - The updated object to validate

Throws:

ValidationException - if the updated object is not valid. The exception will describe the validation failure. A MissingValidatorException is thrown if the provider has no validator for the given object type.

validateObject

@Deprecated
void validateObject(DBObject original,
                               DBObject updated,
                               java.lang.String property)
                    throws ValidationException

Deprecated. use validateObjectProperty(DBObject,DBObject,Object)

Throws:

ValidationException

validateObjectProperty

void validateObjectProperty(DBObject original,
                            DBObject updated,
                            java.lang.Object property)
                            throws ValidationException

Checks to see if the updated children of a given object are valid. If the object has no children of the given type a MissingValidatorException will be thrown. This is a convinience method to perform validation to a specific property on an object - all properties will be validated if validateObject(DBObject,DBObject) is called.

Parameters:

original - The original version of the edited object

updated - The edited object to validate

property - An identifier for a specific property to validate

Throws:

ValidationException - if the object is not valid. The exception will describe the validation failure. A MissingValidatorException is thrown if the provider has no validator for the given object type, or property.

validateSchema

@Deprecated
void validateSchema(Schema schema)
                    throws ValidationException

Deprecated. use validateObject(DBObject object)

Checks to see if the Schema is valid.

Parameters:

schema - The Schema to validate

Throws:

ValidationException - if the Schema is not valid. The exception will describe the validation failure.

validateSchema

@Deprecated
void validateSchema(Schema original,
                               Schema updated)
                    throws ValidationException

Deprecated. use validateObject(DBObject original, DBObject updated)

Checks to see if the schema update is valid.

Parameters:

object - The original schema

object - The updated schema to validate

Throws:

ValidationException - if the updated schema is not valid. The exception will describe the validation failure.

getObject

SchemaObject getObject(java.lang.String objectType,
                       Schema schema,
                       java.lang.String name)
                       throws DBException

Retrieves the SchemaObject representing a specific database object.

Parameters:

objectType - the type of object desired.

schema - the name of the schema containing the object

name - the name of the object

Returns:

the SchemaObject matching the specified criteria

Throws:

DBException - if an error is encountered retrieving the object

See Also:

DBObject.getType()

getObjectManager

SchemaObjectManager getObjectManager()

DO NOT USE this method until Mark has reviewed its inclusion in the API. Retrieves the object manager for dealing with dependencies in this provider.

Returns:

the SchemaObjectManager for dealing with dependencies in this provider.

updateObjects

void updateObjects(ResultSet rs,
                   boolean replace,
                   boolean cascade)
                   throws DBException

Updates the definition of a set of objects. The changes required are described by the ResultSet which must have been created using the DiffEngine returned by getDiffEngine() The 'change' maybe to create, alter, or delete objects.

Parameters:

rs - the changes described as a ResultSet - this should be a LIST ResultSet with the old objects as a() and the new objects as b().

replace - true if an existing object is to be replaced (when creating)

cascade - true if cascade delete should be used to replace an object (when deleting)

Throws:

DBException

updateObject

void updateObject(SchemaObject oldObject,
                  SchemaObject newObject)
                  throws DBException

Updates the definition of an object.

Parameters:

oldObject - the old version of the object

newObject - the new version of the object

Throws:

DBException - if the update fails

updateObjects

void updateObjects(SchemaObject[] oldObjects,
                   SchemaObject[] newObjects)
                   throws DBException

Updates the definition of a set of objects.

Parameters:

oldObject - the old version of the objects

newObject - the new version of the objects

Throws:

DBException - if the update fails

listObjects

java.lang.String[] listObjects(java.lang.String objectType,
                               Schema schema)
                               throws DBException

Lists the objects of a given type available from this provider.

Parameters:

objectType - the type of objects to list

schema - the schema to list from

Returns:

an array of object names

Throws:

DBException

listObjects

java.lang.String[] listObjects(java.lang.String objectType,
                               Schema schema,
                               java.lang.String ref)
                               throws DBException

Lists the objects of a given type available from this provider.

Parameters:

objectType - the type of objects to list

schema - the schema to list from

ref - a pattern to match against.

Returns:

an array of object names

Throws:

DBException

listObjects

SchemaObject[] listObjects(java.lang.String[] objectTypes,
                           Schema schema)
                           throws DBException

Lists the objects of multiple types available from this provider.

Parameters:

objectTypes - an array of Strings representing the desired types

schema - the Schema to list from

Returns:

an array of SchemaObjects representing the objects

Throws:

DBException - if an error is encountered listing the objects

listObjects

SchemaObject[] listObjects(java.lang.String[] objectTypes,
                           Schema schema,
                           java.lang.String ref)
                           throws DBException

Lists the objects of multiple types available from this provider.

Parameters:

objectTypes - an array of Strings representing the desired types

schema - the Schema to list from

ref - a pattern to match against.

Returns:

an array of SchemaObjects representing the objects

Throws:

DBException - if an error is encountered listing the objects

getTimestamp

java.lang.Long getTimestamp(java.lang.String objectType,
                            Schema schema,
                            java.lang.String name)
                            throws DBException

Retrieves the timestamp representing the last modification time of the specified object's metadata. If the provider does not provide timestamp information for metadata, a null value should be returned.

Parameters:

objectType - a String containing the type of the object

schema - the Schema containing the object

name - a String containing the name of the object

Returns:

the timestamp as a Long value

Throws:

DBException - if an error is encountered listing the objects

getTimestamp

java.lang.Long getTimestamp(DBObjectID id)
                            throws DBException

Throws:

DBException

listObjectTypes

java.lang.String[] listObjectTypes()

Lists the database object types supported by this DBObjectProvider. These types can then be used with listObjects to retrieve the objects of a given type.

Returns:

an array of strings containing the supported types of objects

See Also:

listObjects(java.lang.String, oracle.javatools.db.Schema)

supportsObjectType

boolean supportsObjectType(java.lang.String type)

Convinience method to check whether this provider supports the given object type - i.e. whether it is contained in the array returned by listObjectTypes().

See Also:

listObjectTypes()

listSupportedDataTypes

DataType[] listSupportedDataTypes()

Retrieves the list of datatypes supported by this provider.

Returns:

an array of DataType objects representing the supported datatypes.

getDataType

DataType getDataType(java.lang.String typeName)

Retrieves the datatype represented by a specific name.

Parameters:

typeName - a String containing the name of the datatype.

Returns:

the DataType represented by the specified name or null if none can be found.

getOrCreateDataType

DataType getOrCreateDataType(java.lang.String typeName)

Retrieves the datatype represented by a specific name.

Parameters:

typeName - a String containing the name of the datatype.

Returns:

the DataType represented by the specified name. If none can be found, creates a UserDataType and registers this with the provider.

listSchemas

Schema[] listSchemas()
                     throws DBException

Retrieves the list of schemas available from this provider regardless of their visibility to the user.

Returns:

an array of schemas

Throws:

DBException

See Also:

listSchemas(boolean)

listSchemas

Schema[] listSchemas(boolean showAll)
                     throws DBException

Retrieves the list of schemas available from this provider. The list is optionally restricted to those schemas containing objects belonging (or visible to) the user.

Parameters:

showAll - if false, only schemas containing objects belonging to (or visible to) the user are returned

Returns:

an array of schemas

Throws:

DBException - if an error is encountered listing the schemas.

getSchema

Schema getSchema(java.lang.String name)
                 throws DBException

Retrieves the Schema object associated with a specific name.

Parameters:

name - a string containing the name of the schema

Returns:

a Schema representing the schema

Throws:

DBException - if an error is encountered getting the schema

getDefaultSchema

Schema getDefaultSchema()
                        throws DBException

Returns the default schema for the provider.

Throws:

DBException

canCreate

boolean canCreate(Schema schema,
                  boolean replace)

Whether an attempt to create the specified schema is likely to succeed.

Parameters:

schema - the Schema describing the object to create

replace - whether to replace an existing schema. If replace is false and the schema exists, canCreate must return false.

Returns:

whether the create will succeed.

createSchema

void createSchema(Schema schema,
                  boolean replace)
                  throws DBException

Causes the creation of a new Schema in the persistent storage.

Parameters:

schema - the schema being created

replace - whether to replace an existing schema

Throws:

DBException - if an error is encountered creating the schema

updateSchema

void updateSchema(Schema oldSchema,
                  Schema newSchema)
                  throws DBException

Updates the definition of a Schema.

Parameters:

oldSchema - the old version of the schema

newSchema - the new version of the schema

Throws:

DBException - if the update fails

canDelete

boolean canDelete(Schema schema,
                  boolean cascade)

Checks to see whether a specific schema can be deleted.

Parameters:

schema - the object to check

cascade - whether to assume a cascading delete should be used.

Returns:

whether the delete, if attempted, would succeed.

deleteSchema

void deleteSchema(Schema schema,
                  boolean cascade)
                  throws DBException

Deletes the schema.

Parameters:

schema - the schema to delete

cascade - whether to delete dependent objects (i.e. all SchemaObjects contained in the Schema).

Throws:

DBException - if an error is encountered performing the delete

getDiffEngine

DiffEngine getDiffEngine()

Returns a diff engine setup with the appropriate set of differs for object updating.

Providers which do not support object updating should return null.

isEditable

boolean isEditable(DBObject object)

Returns whether or not the object can be edited

getDefaultTemplateForType

SchemaObject getDefaultTemplateForType(java.lang.String type)

Returns the default template object for the given type, or null if none defined

setDefaultTemplateForType

void setDefaultTemplateForType(java.lang.String type,
                               SchemaObject template)

Sets the default template object for the given type.

isNewFromTemplateType

boolean isNewFromTemplateType(java.lang.String type)