org.sormula.operation.aggregate
Class SelectSumOperation<R,T>

java.lang.Object
  org.sormula.operation.SqlOperation<R>
      org.sormula.operation.ScalarSelectOperation<R>
          org.sormula.operation.aggregate.SelectAggregateOperation<R,T>
              org.sormula.operation.aggregate.SelectSumOperation<R,T>

Type Parameters:

R - class type which contains members for columns of a row in a table

T - class type of aggregate result

public class SelectSumOperation<R,T>
extends SelectAggregateOperation<R,T>

SQL SUM aggregate operation. See base class for details about use.

Since:

1.7 and 2.1

Author:

Jeff Miller

Constructor Summary

SelectSumOperation(Table<R> table, java.lang.String expression)
Constructs for standard sql select statement as:
SELECT SUM(e), ...

Method Summary

Methods inherited from class org.sormula.operation.aggregate.SelectAggregateOperation

initBaseSql, readAggregate

Methods inherited from class org.sormula.operation.ScalarSelectOperation

close, execute, getMaximumRowsRead, getOrderByName, getOrderByTranslator, getResultSet, getRowsReadCount, getSql, isLazySelectsCascades, isNotifyLazySelects, postRead, postReadCascade, prepareCascades, preRead, preReadCascade, readNext, select, select, setMaximumRowsRead, setOrderBy, setOrderByTranslator, setParameters, setRowParameters

Methods inherited from class org.sormula.operation.SqlOperation

cancel, cascade, closeCascades, closeStatement, createTargetField, getBaseSql, getConnection, getCustomSql, getNextParameter, getOperationTime, getParameters, getPreparedSql, getPreparedStatement, getQueryTimeout, getTable, getTargetTable, getTimingId, getWhereConditionName, getWhereTranslator, initOperationTime, isAutoGeneratedKeys, isIncludeIdentityColumns, isReadOnly, isTimings, logTimings, prepare, prepareCascades, prepareCheck, prepareColumns, prepareParameters, prepareWhere, setAutoGeneratedKeys, setBaseSql, setCustomSql, setIncludeIdentityColumns, setNextParameter, setQueryTimeout, setReadOnly, setTimingId, setTimings, setWhere, setWhereTranslator, writeColumns, writeParameter, writeParameters, writeWhere

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SelectSumOperation

public SelectSumOperation(Table<R> table,
                          java.lang.String expression)
                   throws OperationException

Constructs for standard sql select statement as:
SELECT SUM(e), ... FROM table
where e is a SQL expression (typically a column name).

Parameters:

table - select from this table

expression - expression to use as parameter to function; typically it is the name of a column to that aggregate function operates upon (example: SUM(amount) amount is expression)

Throws:

OperationException - if error