package liquibase.sqlgenerator.core;
import liquibase.database.Database;
import liquibase.database.core.DB2Database;
import liquibase.database.core.FirebirdDatabase;
import liquibase.database.core.H2Database;
import liquibase.database.core.HsqlDatabase;
import liquibase.database.core.InformixDatabase;
import liquibase.database.core.MSSQLDatabase;
import liquibase.database.core.OracleDatabase;
import liquibase.database.core.PostgresDatabase;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.statement.core.RenameSequenceStatement;
import liquibase.structure.core.Sequence;
public class RenameSequenceGenerator extends AbstractSqlGenerator<RenameSequenceStatement> {
@Override
public boolean supports(RenameSequenceStatement statement, Database database) {
return database.supportsSequences()
// TODO: following are not implemented/tested currently
&& !(database instanceof DB2Database)
&& !(database instanceof FirebirdDatabase)
&& !(database instanceof H2Database)
&& !(database instanceof HsqlDatabase)
&& !(database instanceof InformixDatabase);
}
@Override
public ValidationErrors validate(RenameSequenceStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
ValidationErrors validationErrors = new ValidationErrors();
validationErrors.checkRequiredField("newSequenceName", statement.getNewSequenceName());
validationErrors.checkRequiredField("oldSequenceName", statement.getOldSequenceName());
return validationErrors;
}
@Override
public Sql[] generateSql(RenameSequenceStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
String sql;
if (database instanceof PostgresDatabase) {
sql = "ALTER SEQUENCE " + database.escapeSequenceName(statement.getCatalogName(), statement.getSchemaName(), statement.getOldSequenceName()) + " RENAME TO " + database.escapeObjectName(statement.getNewSequenceName(), Sequence.class);
} else if (database instanceof OracleDatabase) {
sql = "RENAME " + database.escapeObjectName(statement.getOldSequenceName(), Sequence.class) + " TO " + database.escapeObjectName(statement.getNewSequenceName(), Sequence.class);
} else if( database instanceof MSSQLDatabase){
sql = "SP_RENAME " + database.escapeObjectName(statement.getOldSequenceName(), Sequence.class) + " ," + database.escapeObjectName(statement.getNewSequenceName(),Sequence.class);
} else {
sql = "ALTER SEQUENCE " + database.escapeSequenceName(statement.getCatalogName(), statement.getSchemaName(), statement.getOldSequenceName()) + " RENAME TO " + database.escapeObjectName(statement.getNewSequenceName(), Sequence.class);
}
return new Sql[]{
new UnparsedSql(sql,
getAffectedOldSequence(statement),
getAffectedNewSequence(statement)
)
};
}
protected Sequence getAffectedNewSequence(RenameSequenceStatement statement) {
return new Sequence().setName(statement.getNewSequenceName()).setSchema(statement.getCatalogName(), statement.getSchemaName());
}
protected Sequence getAffectedOldSequence(RenameSequenceStatement statement) {
return new Sequence().setName(statement.getOldSequenceName()).setSchema(statement.getCatalogName(), statement.getSchemaName());
}
}