#1782 - ENH: Add truncate(Class<?>... types) and truncate(String... tables)

Remove truncateTableBefore and truncateTableAfter for now

src/main/java/io/ebean/config/dbplatform/DatabasePlatform.java

@@ -140,8 +140,6 @@ public class DatabasePlatform {
   protected Platform platform = Platform.GENERIC;
 
   protected String truncateTable = "truncate table %s";
-  protected String truncateTableBefore;
-  protected String truncateTableAfter;
 
   protected String columnAliasPrefix = "c";
 
@@ -719,20 +717,6 @@ public class DatabasePlatform {
     return String.format(truncateTable, table);
   }
 
-  /**
-   * Return a statement to execute prior to truncate (like disable foreign keys for mysql).
-   */
-  public String truncateStatementBefore() {
-    return truncateTableBefore;
-  }
-
-  /**
-   * Return a statement to execute after truncate (like enable foreign keys for mysql).
-   */
-  public String truncateStatementAfter() {
-    return truncateTableAfter;
-  }
-
   /**
    * Create the DB schema if it does not exist.
    */

src/main/java/io/ebean/config/dbplatform/h2/H2Platform.java

@@ -26,8 +26,6 @@ public class H2Platform extends DatabasePlatform {
     this.supportsDeleteTableAlias = true;
     this.dbDefaultValue.setNow("now()");
     this.columnAliasPrefix = null;
-    //this.truncateTableBefore = "set referential_integrity false";
-    //this.truncateTableAfter = "set referential_integrity true";
     this.exceptionTranslator =
       new SqlErrorCodes()
         .addAcquireLock("50200","HYT00")

src/main/java/io/ebean/config/dbplatform/mysql/MySqlPlatform.java

@@ -31,8 +31,6 @@ public class MySqlPlatform extends DatabasePlatform {
     this.dbEncrypt = new MySqlDbEncrypt();
     this.historySupport = new MySqlHistorySupport();
     this.columnAliasPrefix = null;
-    //this.truncateTableBefore = "set foreign_key_checks = 0";
-    //this.truncateTableAfter = "set foreign_key_checks = 1";
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsIdentity(true);

src/main/java/io/ebeaninternal/server/core/DefaultServer.java

@@ -653,11 +653,9 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
   @Override
   public void truncate(String... tables) {
     try (Connection connection = getDataSource().getConnection()) {
-      executeSql(connection, databasePlatform.truncateStatementBefore());
       for (String table : tables) {
         executeSql(connection, databasePlatform.truncateStatement(table));
       }
-      executeSql(connection, databasePlatform.truncateStatementAfter());
       connection.commit();
     } catch(SQLException e) {
       throw new PersistenceException("Error executing truncate", e);