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org.hibernate.tool.schema.extract.internal.DatabaseInformationImpl Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.tool.schema.extract.internal;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import org.hibernate.boot.model.naming.Identifier;
import org.hibernate.boot.model.relational.Namespace;
import org.hibernate.boot.model.relational.QualifiedSequenceName;
import org.hibernate.boot.model.relational.QualifiedTableName;
import org.hibernate.engine.jdbc.connections.spi.JdbcConnectionAccess;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.tool.schema.extract.spi.DatabaseInformation;
import org.hibernate.tool.schema.extract.spi.ExtractionContext;
import org.hibernate.tool.schema.extract.spi.InformationExtractor;
import org.hibernate.tool.schema.extract.spi.SequenceInformation;
import org.hibernate.tool.schema.extract.spi.TableInformation;
/**
* Access to information from the existing database.
*
* @author Steve Ebersole
*/
public class DatabaseInformationImpl implements DatabaseInformation, ExtractionContext.DatabaseObjectAccess {
private final InformationExtractor extractor;
private final ExtractionContext extractionContext;
private final JdbcEnvironment jdbcEnvironment;
private final Map sequenceInformationMap = new HashMap();
public DatabaseInformationImpl(
ServiceRegistry serviceRegistry,
JdbcEnvironment jdbcEnvironment,
JdbcConnectionAccess jdbcConnectionAccess,
Identifier defaultCatalogName,
Identifier defaultSchemaName) throws SQLException {
this.jdbcEnvironment = jdbcEnvironment;
this.extractionContext = new ExtractionContextImpl(
serviceRegistry,
jdbcEnvironment,
jdbcConnectionAccess,
this,
defaultCatalogName,
defaultSchemaName
);
// todo : make this pluggable
this.extractor = new InformationExtractorJdbcDatabaseMetaDataImpl( extractionContext );
// legacy code did initialize sequences...
initializeSequences();
}
private void initializeSequences() throws SQLException {
Iterable itr = jdbcEnvironment.getDialect().getSequenceInformationExtractor().extractMetadata( extractionContext );
for ( SequenceInformation sequenceInformation : itr ) {
sequenceInformationMap.put(
// for now, follow the legacy behavior of storing just the
// unqualified sequence name.
new QualifiedSequenceName(
null,
null,
sequenceInformation.getSequenceName().getSequenceName()
),
sequenceInformation
);
}
}
@Override
public boolean schemaExists(Namespace.Name schema) {
return extractor.schemaExists( schema.getCatalog(), schema.getSchema() );
}
@Override
public TableInformation getTableInformation(
Identifier catalogName,
Identifier schemaName,
Identifier tableName) {
return getTableInformation( new QualifiedTableName( catalogName, schemaName, tableName ) );
}
@Override
public TableInformation getTableInformation(
Namespace.Name schemaName,
Identifier tableName) {
return getTableInformation( new QualifiedTableName( schemaName, tableName ) );
}
@Override
public TableInformation getTableInformation(QualifiedTableName qualifiedTableName) {
if ( qualifiedTableName.getObjectName() == null ) {
throw new IllegalArgumentException( "Passed table name cannot be null" );
}
return extractor.getTable(
qualifiedTableName.getCatalogName(),
qualifiedTableName.getSchemaName(),
qualifiedTableName.getTableName()
);
}
@Override
public void registerTable(TableInformation tableInformation) {
}
@Override
public SequenceInformation getSequenceInformation(
Identifier catalogName,
Identifier schemaName,
Identifier sequenceName) {
return getSequenceInformation( new QualifiedSequenceName( catalogName, schemaName, sequenceName ) );
}
@Override
public SequenceInformation getSequenceInformation(
Namespace.Name schemaName,
Identifier sequenceName) {
return getSequenceInformation( new QualifiedSequenceName( schemaName, sequenceName ) );
}
@Override
public SequenceInformation getSequenceInformation(QualifiedSequenceName qualifiedSequenceName) {
return locateSequenceInformation( qualifiedSequenceName );
}
@Override
public boolean catalogExists(Identifier catalog) {
return extractor.catalogExists( catalog );
}
@Override
public TableInformation locateTableInformation(QualifiedTableName tableName) {
return getTableInformation( tableName );
}
@Override
public SequenceInformation locateSequenceInformation(QualifiedSequenceName sequenceName) {
// again, follow legacy behavior
if ( sequenceName.getCatalogName() != null || sequenceName.getSchemaName() != null ) {
sequenceName = new QualifiedSequenceName( null, null, sequenceName.getSequenceName() );
}
return sequenceInformationMap.get( sequenceName );
}
}