Class ASTAggregateFunctionCall

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.exp.parser.EvaluatedNode

org.apache.cayenne.exp.parser.ASTFunctionCall

org.apache.cayenne.exp.parser.ASTAggregateFunctionCall

All Implemented Interfaces:

Serializable, Node, XMLSerializable

Direct Known Subclasses:

ASTAvg, ASTCount, ASTCustomAggregate, ASTDistinct, ASTMax, ASTMin, ASTSum

public abstract class ASTAggregateFunctionCall
extends ASTFunctionCall

Base class for all aggregation functions expressions It's more like marker interface for now.

Since:

4.0

See Also:

• Serialized Form

Field Summary

Fields inherited from class ASTFunctionCall

functionName

Fields inherited from class SimpleNode

children, id, parent

Fields inherited from class Expression

ADD, ALL, AND, ANY, ASTERISK, BETWEEN, BITWISE_AND, BITWISE_LEFT_SHIFT, BITWISE_NOT, BITWISE_OR, BITWISE_RIGHT_SHIFT, BITWISE_XOR, CASE_WHEN, CUSTOM_OP, DB_PATH, DBID_PATH, DIVIDE, ELSE, ENCLOSING_OBJECT, EQUAL_TO, EXISTS, FALSE, FULL_OBJECT, FUNCTION_CALL, GREATER_THAN, GREATER_THAN_EQUAL_TO, IN, LESS_THAN, LESS_THAN_EQUAL_TO, LIKE, LIKE_IGNORE_CASE, LIST, MULTIPLY, NEGATIVE, NOT, NOT_BETWEEN, NOT_EQUAL_TO, NOT_EXISTS, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, PRUNED_NODE, SCALAR, SUBQUERY, SUBTRACT, THEN, TRUE, type, WHEN

Method Summary

Modifier and Type	Method	Description
protected Object	evaluateCollection(Collection<?> values)
protected Object	evaluateNode(Object o)	Evaluates itself with object, pushing result on the stack.
protected Object	evaluateSubNode(Object o, Object[] evaluatedChildren)
protected int	getRequiredChildrenCount()

Methods inherited from class ASTFunctionCall

appendAsEJBQL, appendAsString, appendFunctionNameAsString, equals, getExpressionOperator, getFunctionName, getType, hashCode, nameToCamelCase, needParenthesis, setFunctionName

Methods inherited from class SimpleNode

appendAsEJBQL, appendAsEscapedString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, exists, expName, flattenTree, getEJBQLExpressionOperator, getOperand, getOperandCount, getPathAliases, isValidParent, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExists, notExp, numericToString, pruneNodeForPrunedChild, setOperand, unwrapChild, wrapChild

Methods inherited from class Expression

andExp, andExp, deepCopy, encodeAsXML, filter, filterObjects, first, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, shallowCopy, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse

Methods inherited from class Object

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

Method Details

getRequiredChildrenCount

protected int getRequiredChildrenCount()

Specified by:

getRequiredChildrenCount in class EvaluatedNode

evaluateNode

protected Object evaluateNode(Object o)
                       throws Exception

Description copied from class: SimpleNode

Evaluates itself with object, pushing result on the stack.

Overrides:

evaluateNode in class EvaluatedNode

Throws:

Exception

evaluateCollection

protected Object evaluateCollection(Collection<?> values)

evaluateSubNode

protected Object evaluateSubNode(Object o,
 Object[] evaluatedChildren)
                          throws Exception

Specified by:

evaluateSubNode in class EvaluatedNode

Throws:

Exception