Class SumExp

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.ValueExp

org.apache.cayenne.exp.FunctionCallExp

org.apache.cayenne.exp.AggregateFunctionCallExp

org.apache.cayenne.exp.SumExp

All Implemented Interfaces:

XMLSerializable

public final class SumExp
extends AggregateFunctionCallExp

Since:

5.0

Field Summary

Fields inherited from class Expression

operands, PRUNED_NODE

Constructor Summary

Constructors

Constructor	Description
SumExp(Object... operands)

Method Summary

Modifier and Type	Method	Description
protected Object	evaluateCollection(Collection<?> values)	Sums numeric values following SQL semantics: nulls are skipped and an empty input produces null.
String	getFunctionName()
Expression	shallowCopy()	Creates a copy of this expression node, without copying children.

Methods inherited from class AggregateFunctionCallExp

evaluateNode, evaluateSubNode, getRequiredChildrenCount

Methods inherited from class FunctionCallExp

appendAsString, appendFunctionNameAsString, equals, getExpressionOperator, hashCode, nameToCamelCase, needParenthesis, parenthesizeAsOperand

Methods inherited from class Expression

andExp, andExp, appendOperandAsString, deepCopy, encodeAsXML, evaluate, evaluateOperand, exists, expName, filter, filterObjects, first, flattenTree, getOperand, getOperandCount, getPathAliases, isValidParent, match, notExists, notExp, orExp, orExp, params, params, paramsArray, pruneNodeForPrunedChild, setOperand, setOperands, toString, transform, transformExpression, traverse, traverse

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

SumExp

public SumExp(Object... operands)

Method Details

getFunctionName

public String getFunctionName()

Specified by:

getFunctionName in class FunctionCallExp

shallowCopy

public Expression shallowCopy()

Description copied from class: Expression

Creates a copy of this expression node, without copying children.

Specified by:

shallowCopy in class Expression

evaluateCollection

protected Object evaluateCollection(Collection<?> values)

Sums numeric values following SQL semantics: nulls are skipped and an empty input produces null. The result is a BigDecimal if any value is a BigDecimal, a Long if all values are integral, and a Double otherwise.

Overrides:

evaluateCollection in class AggregateFunctionCallExp