package liquibase.sqlgenerator.core;
import liquibase.database.Database;
import liquibase.exception.ValidationErrors;
import liquibase.sql.Sql;
import liquibase.sql.UnparsedSql;
import liquibase.sqlgenerator.SqlGenerator;
import liquibase.sqlgenerator.SqlGeneratorChain;
import liquibase.statement.core.ClearDatabaseChangeLogTableStatement;
import liquibase.structure.core.Relation;
import liquibase.structure.core.Table;
public class ClearDatabaseChangeLogTableGenerator extends AbstractSqlGenerator<ClearDatabaseChangeLogTableStatement> {
@Override
public ValidationErrors validate(ClearDatabaseChangeLogTableStatement clearDatabaseChangeLogTableStatement, Database database, SqlGeneratorChain sqlGeneratorChain) {
return new ValidationErrors();
}
@Override
public Sql[] generateSql(ClearDatabaseChangeLogTableStatement statement, Database database, SqlGeneratorChain sqlGeneratorChain) {
String schemaName = statement.getSchemaName();
if (schemaName == null) {
schemaName = database.getLiquibaseSchemaName();
}
return new Sql[] {
new UnparsedSql("DELETE FROM " + database.escapeTableName(database.getLiquibaseCatalogName(), schemaName, database.getDatabaseChangeLogTableName()),
getAffectedTable(database, schemaName)) };
}
protected Relation getAffectedTable(Database database, String schemaName) {
return new Table().setName(database.getDatabaseChangeLogTableName()).setSchema(database.getLiquibaseCatalogName(), schemaName);
}
}