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src/main/java/etunicorn/databaseConfiguration/SQLiteDialect.java 4.95 KB
8cbe108c   badetitou   Connect to Database
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  package etunicorn.databaseConfiguration;
  
  /**
   * Created by badet on 29/01/2017.
   */
  
  import org.hibernate.dialect.Dialect;
  import org.hibernate.dialect.function.SQLFunctionTemplate;
  import org.hibernate.dialect.function.StandardSQLFunction;
  import org.hibernate.dialect.function.VarArgsSQLFunction;
  import org.hibernate.type.StringType;
  
  import java.sql.Types;
  
  public class SQLiteDialect extends Dialect {
      public SQLiteDialect() {
          registerColumnType(Types.BIT, "integer");
          registerColumnType(Types.TINYINT, "tinyint");
          registerColumnType(Types.SMALLINT, "smallint");
          registerColumnType(Types.INTEGER, "integer");
          registerColumnType(Types.BIGINT, "bigint");
          registerColumnType(Types.FLOAT, "float");
          registerColumnType(Types.REAL, "real");
          registerColumnType(Types.DOUBLE, "double");
          registerColumnType(Types.NUMERIC, "numeric");
          registerColumnType(Types.DECIMAL, "decimal");
          registerColumnType(Types.CHAR, "char");
          registerColumnType(Types.VARCHAR, "varchar");
          registerColumnType(Types.LONGVARCHAR, "longvarchar");
          registerColumnType(Types.DATE, "date");
          registerColumnType(Types.TIME, "time");
          registerColumnType(Types.TIMESTAMP, "timestamp");
          registerColumnType(Types.BINARY, "blob");
          registerColumnType(Types.VARBINARY, "blob");
          registerColumnType(Types.LONGVARBINARY, "blob");
          // registerColumnType(Types.NULL, "null");
          registerColumnType(Types.BLOB, "blob");
          registerColumnType(Types.CLOB, "clob");
          registerColumnType(Types.BOOLEAN, "integer");
  
          registerFunction( "concat", new VarArgsSQLFunction(StringType.INSTANCE, "", "||", "") );
          registerFunction( "mod", new SQLFunctionTemplate( StringType.INSTANCE, "?1 % ?2" ) );
          registerFunction( "substr", new StandardSQLFunction("substr", StringType.INSTANCE) );
          registerFunction( "substring", new StandardSQLFunction( "substr", StringType.INSTANCE) );
      }
  
      public boolean supportsIdentityColumns() {
          return true;
      }
  
    /*
    public boolean supportsInsertSelectIdentity() {
      return true; // As specify in NHibernate dialect
    }
    */
  
      public boolean hasDataTypeInIdentityColumn() {
          return false; // As specify in NHibernate dialect
      }
  
    /*
    public String appendIdentitySelectToInsert(String insertString) {
      return new StringBuffer(insertString.length()+30). // As specify in NHibernate dialect
        append(insertString).
        append("; ").append(getIdentitySelectString()).
        toString();
    }
    */
  
      public String getIdentityColumnString() {
          // return "integer primary key autoincrement";
          return "integer";
      }
  
      public String getIdentitySelectString() {
          return "select last_insert_rowid()";
      }
  
      public boolean supportsLimit() {
          return true;
      }
  
      protected String getLimitString(String query, boolean hasOffset) {
          return new StringBuffer(query.length()+20).
                  append(query).
                  append(hasOffset ? " limit ? offset ?" : " limit ?").
                  toString();
      }
  
      public boolean supportsTemporaryTables() {
          return true;
      }
  
      public String getCreateTemporaryTableString() {
          return "create temporary table if not exists";
      }
  
      public boolean dropTemporaryTableAfterUse() {
          return false;
      }
  
      public boolean supportsCurrentTimestampSelection() {
          return true;
      }
  
      public boolean isCurrentTimestampSelectStringCallable() {
          return false;
      }
  
      public String getCurrentTimestampSelectString() {
          return "select current_timestamp";
      }
  
      public boolean supportsUnionAll() {
          return true;
      }
  
      public boolean hasAlterTable() {
          return false; // As specify in NHibernate dialect
      }
  
      public boolean dropConstraints() {
          return false;
      }
  
      public String getAddColumnString() {
          return "add column";
      }
  
      public String getForUpdateString() {
          return "";
      }
  
      public boolean supportsOuterJoinForUpdate() {
          return false;
      }
  
      public String getDropForeignKeyString() {
          throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect");
      }
  
      public String getAddForeignKeyConstraintString(String constraintName,
                                                     String[] foreignKey, String referencedTable, String[] primaryKey,
                                                     boolean referencesPrimaryKey) {
          throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect");
      }
  
      public String getAddPrimaryKeyConstraintString(String constraintName) {
          throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect");
      }
  
      public boolean supportsIfExistsBeforeTableName() {
          return true;
      }
  
      public boolean supportsCascadeDelete() {
          return false;
      }
  }