org.apache.openjpa.jdbc.kernel.exps
Class Avg

java.lang.Object
  org.apache.openjpa.jdbc.kernel.exps.AbstractVal
      org.apache.openjpa.jdbc.kernel.exps.UnaryOp
          org.apache.openjpa.jdbc.kernel.exps.Avg

All Implemented Interfaces:

Serializable, Val, Value

 class Avg
extends UnaryOp

Average.

Author:

Abe White

Field Summary

Fields inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal

FALSE, TRUE

Fields inherited from interface org.apache.openjpa.jdbc.kernel.exps.Val

ABS_VAL, ARGS_VAL, CMP_EQUAL, COALESCE_VAL, CONCAT_VAL, FORCE_OUTER, GENERALCASE_VAL, INDEXOF_VAL, JOIN_REL, LENGTH_VAL, LOCATE_VAL, LOWER_VAL, MATH_VAL, NULL_CMP, NULLIF_VAL, SIMPLECASE_VAL, SQRT_VAL, SUBSTRING_VAL, TRIM_VAL, UPPER_VAL, VAL, WHENCONDITION_VAL, WHENSCALAR_VAL

Constructor Summary

Avg(Val val)
Constructor.

Method Summary

protected String	getOperator() Return the name of this operator.
boolean	isAggregate() Return true if this value is an aggregate.

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.UnaryOp

acceptVisit, appendTo, calculateValue, getMetaData, getNoParen, getType, getType, getValue, groupBy, initialize, initializeValue, length, load, orderBy, select, selectColumns, setImplicitType, setMetaData

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal

appendIndex, appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, appendType, getAlias, getId, getName, getPath, getSelectAs, isVariable, isXPath, setAlias, toDataStoreValue

Methods inherited from class java.lang.Object

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

Constructor Detail

Avg

public Avg(Val val)

Constructor. Provide the value to operate on.

Method Detail

getOperator

protected String getOperator()

Description copied from class: UnaryOp

Return the name of this operator.

Specified by:

getOperator in class UnaryOp

isAggregate

public boolean isAggregate()

Description copied from interface: Value

Return true if this value is an aggregate.

Specified by:

isAggregate in interface Value

Overrides:

isAggregate in class AbstractVal