it.unibz.inf.ontop.dbschema

Interface DBMetadata

All Known Implementing Classes:

BasicDBMetadata, DummyBasicDBMetadata

public interface DBMetadata

Common abstraction for all sorts of Database (relational, etc.)

Method Summary

Modifier and Type	Method and Description
com.google.common.collect.ImmutableMap<RelationID,RelationDefinition>	copyRelations() Deprecated.
com.google.common.collect.ImmutableMap<RelationID,DatabaseRelationDefinition>	copyTables() Deprecated.
void	freeze() After calling this method, the DBMetadata cannot be modified
DatabaseRelationDefinition	getDatabaseRelation(RelationID id) Retrieves the data definition object based on its name.
Collection<DatabaseRelationDefinition>	getDatabaseRelations() Retrieves the tables list form the metadata.
String	getDbmsProductName()
DBParameters	getDBParameters() New-gen interface TODO: stop using the DBMetadata object in most of the code but DBParameters instead when needed
String	getDriverName()
String	getDriverVersion()
QuotedIDFactory	getQuotedIDFactory() Deprecated.
RelationDefinition	getRelation(RelationID name) Retrieves the data definition object based on its name.
com.google.common.collect.ImmutableMultimap<RelationPredicate,com.google.common.collect.ImmutableList<Integer>>	getUniqueConstraints() Generates a map for each predicate in the body of the rules in 'program' that contains the Primary Key data for the predicates obtained from the info in the metadata.
String	printKeys()

Method Detail

getDbmsProductName

String getDbmsProductName()

getDriverName

String getDriverName()

getDriverVersion

String getDriverVersion()

printKeys

String printKeys()

getUniqueConstraints

com.google.common.collect.ImmutableMultimap<RelationPredicate,com.google.common.collect.ImmutableList<Integer>> getUniqueConstraints()

Generates a map for each predicate in the body of the rules in 'program' that contains the Primary Key data for the predicates obtained from the info in the metadata. It also returns the columns with unique constraints For instance, Given the table definition Tab0[col1:pk, col2:pk, col3, col4:unique, col5:unique], The methods will return the following Multimap: { Tab0 -> { [col1, col2], [col4], [col5] } }

getQuotedIDFactory

@Deprecated
QuotedIDFactory getQuotedIDFactory()

Deprecated.

Use DBParameters.getQuotedIDFactory() instead

getDatabaseRelation

DatabaseRelationDefinition getDatabaseRelation(RelationID id)

Retrieves the data definition object based on its name. The id is a table name. If id has schema and the fully qualified id cannot be resolved the the table-only id is used

Parameters:

id -

getRelation

RelationDefinition getRelation(RelationID name)

Retrieves the data definition object based on its name. The name can be either a table name or a view name. If id has schema and the fully qualified id cannot be resolved the the table-only id is used

Parameters:

name -

getDatabaseRelations

Collection<DatabaseRelationDefinition> getDatabaseRelations()

Retrieves the tables list form the metadata.

freeze

void freeze()

After calling this method, the DBMetadata cannot be modified

copyTables

@Deprecated
com.google.common.collect.ImmutableMap<RelationID,DatabaseRelationDefinition> copyTables()

Deprecated.

Temporary solution to enable DBMetadata merging

copyRelations

@Deprecated
com.google.common.collect.ImmutableMap<RelationID,RelationDefinition> copyRelations()

Deprecated.

Temporary solution to enable DBMetadata merging

getDBParameters

DBParameters getDBParameters()

New-gen interface TODO: stop using the DBMetadata object in most of the code but DBParameters instead when needed