Пример #1
0
 public static JdbcSchema create(
     SchemaPlus parentSchema, String name, DataSource dataSource, String catalog, String schema) {
   final Expression expression = Schemas.subSchemaExpression(parentSchema, name, JdbcSchema.class);
   final SqlDialect dialect = createDialect(dataSource);
   final JdbcConvention convention = JdbcConvention.of(dialect, expression, name);
   return new JdbcSchema(dataSource, dialect, convention, catalog, schema);
 }
Пример #2
0
 private SqlOperator toOp(SqlIdentifier name, Function function) {
   List<RelDataType> argTypes = new ArrayList<RelDataType>();
   List<SqlTypeFamily> typeFamilies = new ArrayList<SqlTypeFamily>();
   for (FunctionParameter o : function.getParameters()) {
     final RelDataType type = o.getType(typeFactory);
     argTypes.add(type);
     typeFamilies.add(Util.first(type.getSqlTypeName().getFamily(), SqlTypeFamily.ANY));
   }
   final RelDataType returnType;
   if (function instanceof ScalarFunction) {
     return new SqlUserDefinedFunction(
         name,
         ReturnTypes.explicit(Schemas.proto((ScalarFunction) function)),
         InferTypes.explicit(argTypes),
         OperandTypes.family(typeFamilies),
         toSql(argTypes),
         function);
   } else if (function instanceof AggregateFunction) {
     returnType = ((AggregateFunction) function).getReturnType(typeFactory);
     return new SqlUserDefinedAggFunction(
         name,
         ReturnTypes.explicit(returnType),
         InferTypes.explicit(argTypes),
         OperandTypes.family(typeFamilies),
         (AggregateFunction) function);
   } else if (function instanceof TableMacro) {
     return new SqlUserDefinedTableMacro(
         name,
         ReturnTypes.CURSOR,
         InferTypes.explicit(argTypes),
         OperandTypes.family(typeFamilies),
         (TableMacro) function);
   } else if (function instanceof TableFunction) {
     return new SqlUserDefinedTableFunction(
         name,
         ReturnTypes.CURSOR,
         InferTypes.explicit(argTypes),
         OperandTypes.family(typeFamilies),
         toSql(argTypes),
         (TableFunction) function);
   } else {
     throw new AssertionError("unknown function type " + function);
   }
 }
Пример #3
0
 public Expression getExpression(SchemaPlus parentSchema, String name) {
   return Schemas.subSchemaExpression(parentSchema, name, JdbcSchema.class);
 }