package liquibase.precondition.core;
import liquibase.changelog.DatabaseChangeLog;
import liquibase.changelog.ChangeSet;
import liquibase.database.Database;
import liquibase.database.DatabaseList;
import liquibase.exception.PreconditionErrorException;
import liquibase.exception.PreconditionFailedException;
import liquibase.exception.ValidationErrors;
import liquibase.exception.Warnings;
import liquibase.precondition.AbstractPrecondition;
import liquibase.precondition.Precondition;
/**
* Precondition for specifying the type of database (oracle, mysql, etc.).
*/
public class DBMSPrecondition extends AbstractPrecondition {
private String type;
public DBMSPrecondition() {
}
@Override
public String getSerializedObjectNamespace() {
return STANDARD_CHANGELOG_NAMESPACE;
}
public String getType() {
return type;
}
public void setType(String atype) {
this.type = atype.toLowerCase();
}
@Override
public Warnings warn(Database database) {
return new Warnings();
}
@Override
public ValidationErrors validate(Database database) {
return new ValidationErrors();
}
@Override
public void check(Database database, DatabaseChangeLog changeLog, ChangeSet changeSet) throws PreconditionFailedException, PreconditionErrorException {
try {
String dbType = database.getShortName();
if (!DatabaseList.definitionMatches(this.type, database, false)) {
throw new PreconditionFailedException("DBMS Precondition failed: expected "+type+", got "+dbType, changeLog, this);
}
} catch (PreconditionFailedException e) {
throw e;
} catch (Exception e) {
throw new PreconditionErrorException(e, changeLog, this);
}
}
@Override
public String getName() {
return "dbms";
}
}