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;

 public class ClearDatabaseChangeLogTableGenerator extends AbstractSqlGenerator<ClearDatabaseChangeLogTableStatement> {

     public ValidationErrors validate(ClearDatabaseChangeLogTableStatement clearDatabaseChangeLogTableStatement,

             Database database, SqlGeneratorChain sqlGeneratorChain) {

         return new ValidationErrors();

     }

     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(schemaName, database.getDatabaseChangeLogTableName())) };

     }

 }