程序包 org.hibernate.criterion

类 AggregateProjection

java.lang.Object

org.hibernate.criterion.SimpleProjection

org.hibernate.criterion.AggregateProjection

所有已实现的接口:

Serializable, EnhancedProjection, Projection

直接已知子类:

AvgProjection, CountProjection

public class AggregateProjection
extends SimpleProjection

Base class for standard aggregation functions.

作者:

max

另请参阅:

序列化表格

字段概要

字段

修饰符和类型	字段	说明
protected String	propertyName

构造器概要

构造器

限定符	构造器	说明
protected	AggregateProjection(String functionName, String propertyName)

方法概要

修饰符和类型	方法	说明
protected List	buildFunctionParameterList(String column)
protected List	buildFunctionParameterList(Criteria criteria, CriteriaQuery criteriaQuery)
protected SQLFunction	getFunction(String functionName, CriteriaQuery criteriaQuery)
protected SQLFunction	getFunction(CriteriaQuery criteriaQuery)
String	getFunctionName()
String	getPropertyName()
Type[]	getTypes(Criteria criteria, CriteriaQuery criteriaQuery)	Types returned by the rendered SQL fragment.
String	toSqlString(Criteria criteria, int loc, CriteriaQuery criteriaQuery)	Render the SQL fragment to be used in the SELECT clause.
String	toString()

从类继承的方法 org.hibernate.criterion.SimpleProjection

as, getAliases, getColumnAliases, getColumnAliases, getColumnAliases, getColumnAliases, getColumnCount, getTypes, isGrouped, toGroupSqlString

从类继承的方法 java.lang.Object

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

字段详细资料

propertyName

protected final String propertyName

构造器详细资料

AggregateProjection

protected AggregateProjection(String functionName,
                              String propertyName)

方法详细资料

getFunctionName

public String getFunctionName()

getPropertyName

public String getPropertyName()

getTypes

public Type[] getTypes(Criteria criteria,
                       CriteriaQuery criteriaQuery)
                throws HibernateException

从接口复制的说明: Projection

Types returned by the rendered SQL fragment. In other words what are the types that would represent the values this projection asked to be pulled into the result set?

参数:

criteria - The local criteria to which this project is attached (for resolution).

criteriaQuery - The overall criteria query instance.

返回:

The return types.

抛出:

HibernateException - Indicates a problem resolving the types

toSqlString

public String toSqlString(Criteria criteria,
                          int loc,
                          CriteriaQuery criteriaQuery)
                   throws HibernateException

从接口复制的说明: Projection

Render the SQL fragment to be used in the SELECT clause.

参数:

criteria - The local criteria to which this project is attached (for resolution).

loc - The number of columns rendered in the SELECT clause before this projection. Generally speaking this is useful to ensure uniqueness of the individual columns aliases.

criteriaQuery - The overall criteria query instance.

返回:

The SQL fragment to plug into the SELECT

抛出:

HibernateException - Indicates a problem performing the rendering

getFunction

protected SQLFunction getFunction(CriteriaQuery criteriaQuery)

getFunction

protected SQLFunction getFunction(String functionName,
                                  CriteriaQuery criteriaQuery)

buildFunctionParameterList

protected List buildFunctionParameterList(Criteria criteria,
                                          CriteriaQuery criteriaQuery)

buildFunctionParameterList

protected List buildFunctionParameterList(String column)

toString

public String toString()

覆盖:

toString 在类中 Object