org.hibernate.hql.ast.tree

Class AggregateNode

java.lang.Object

antlr.BaseAST

antlr.CommonAST

org.hibernate.hql.ast.tree.Node

org.hibernate.hql.ast.tree.SqlNode

org.hibernate.hql.ast.tree.HqlSqlWalkerNode

org.hibernate.hql.ast.tree.AbstractSelectExpression

org.hibernate.hql.ast.tree.AggregateNode

All Implemented Interfaces:

antlr.collections.AST, java.io.Serializable, FunctionNode, InitializeableNode, SelectExpression

public class AggregateNode
extends AbstractSelectExpression
implements SelectExpression, FunctionNode

Represents an aggregate function i.e. min, max, sum, avg.

Author:

Joshua Davis

See Also:

Serialized Form

Field Summary

Fields inherited from class antlr.BaseAST

down, right

Constructor Summary

Constructors

Constructor and Description
AggregateNode()

Method Summary

Methods

Modifier and Type	Method and Description
Type	getDataType() Returns the data type of the select expression.
Type	getFirstArgumentType()
SQLFunction	getSQLFunction()
boolean	isScalar()
void	resolve()
void	setScalarColumnText(int i) Appends AST nodes that represent the columns after the current AST node.

Methods inherited from class org.hibernate.hql.ast.tree.AbstractSelectExpression

getAlias, getFromElement, getScalarColumnIndex, isConstructor, isReturnableEntity, setAlias, setScalarColumn

Methods inherited from class org.hibernate.hql.ast.tree.HqlSqlWalkerNode

getAliasGenerator, getASTFactory, getSessionFactoryHelper, getWalker, initialize

Methods inherited from class org.hibernate.hql.ast.tree.SqlNode

getOriginalText, setDataType, setText

Methods inherited from class org.hibernate.hql.ast.tree.Node

getColumn, getFilename, getLine, getRenderText, getTextLength, initialize, initialize

Methods inherited from class antlr.CommonAST

getText, getType, initialize, setType

Methods inherited from class antlr.BaseAST

addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getTokenNames, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toString, toStringList, toStringTree, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.hql.ast.tree.SelectExpression

getAlias, getFromElement, getScalarColumnIndex, isConstructor, isReturnableEntity, setAlias, setScalarColumn, setText

Constructor Detail

AggregateNode

public AggregateNode()

Method Detail

getSQLFunction

public SQLFunction getSQLFunction()

Specified by:

getSQLFunction in interface FunctionNode

resolve

public void resolve()

getFirstArgumentType

public Type getFirstArgumentType()

Specified by:

getFirstArgumentType in interface FunctionNode

getDataType

public Type getDataType()

Description copied from interface: SelectExpression

Returns the data type of the select expression.

Specified by:

getDataType in interface SelectExpression

Overrides:

getDataType in class SqlNode

Returns:

The data type of the select expression.

setScalarColumnText

public void setScalarColumnText(int i)
                         throws antlr.SemanticException

Description copied from interface: SelectExpression

Appends AST nodes that represent the columns after the current AST node. (e.g. 'as col0_O_')

Specified by:

setScalarColumnText in interface SelectExpression

Parameters:

i - The index of the select expression in the projection list.

Throws:

antlr.SemanticException

isScalar

public boolean isScalar()
                 throws antlr.SemanticException

Specified by:

isScalar in interface SelectExpression

Overrides:

isScalar in class AbstractSelectExpression

Throws:

antlr.SemanticException