1 package liquibase.sqlgenerator.core;
2
3 import liquibase.database.Database;
4 import liquibase.exception.ValidationErrors;
5 import liquibase.sql.Sql;
6 import liquibase.sql.UnparsedSql;
7 import liquibase.sqlgenerator.SqlGenerator;
8 import liquibase.sqlgenerator.SqlGeneratorChain;
9 import liquibase.statement.core.ClearDatabaseChangeLogTableStatement;
10
11 public class ClearDatabaseChangeLogTableGenerator extends AbstractSqlGenerator<ClearDatabaseChangeLogTableStatement> {
12
13 public ValidationErrors validate(ClearDatabaseChangeLogTableStatement clearDatabaseChangeLogTableStatement,
14 Database database, SqlGeneratorChain sqlGeneratorChain) {
15 return new ValidationErrors();
16 }
17
18 public Sql[] generateSql(ClearDatabaseChangeLogTableStatement statement, Database database,
19 SqlGeneratorChain sqlGeneratorChain) {
20 String schemaName = statement.getSchemaName();
21 if (schemaName == null) {
22 schemaName = database.getLiquibaseSchemaName();
23 }
24 return new Sql[] { new UnparsedSql("DELETE FROM "
25 + database.escapeTableName(schemaName, database.getDatabaseChangeLogTableName())) };
26 }
27 }