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SQLProjection (Hibernate API Documentation) - Hibernate 3.2.4 正式版 API 英文文档

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org.hibernate.criterion
Class SQLProjection

java.lang.Object
  org.hibernate.criterion.SQLProjection

All Implemented Interfaces:

Projection, Serializable

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public class SQLProjection

extends Object

implements Projection

A SQL fragment. The string {alias} will be replaced by the alias of the root entity.

See Also:

Serialized Form

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Constructor Summary
protected	SQLProjection(String sql, String[] columnAliases, Type[] types)
protected	SQLProjection(String sql, String groupBy, String[] columnAliases, Type[] types)

 

Method Summary
String[]	getAliases()           Get the user-visible aliases for this projection (ie.
String[]	getColumnAliases(int loc)           Get the SQL select clause column aliases
String[]	getColumnAliases(String alias, int loc)           Get the SQL select clause column aliases for a particular user-visible alias
Type[]	getTypes(Criteria crit, CriteriaQuery criteriaQuery)           Return types returned by the rendered SQL fragment
Type[]	getTypes(String alias, Criteria crit, CriteriaQuery criteriaQuery)           Return types for a particular user-visible alias
boolean	isGrouped()           Does this projection specify grouping attributes?
String	toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)           Render the SQL fragment to be used in the group by clause
String	toSqlString(Criteria criteria, int loc, CriteriaQuery criteriaQuery)           Render the SQL fragment
String	toString()

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

SQLProjection

protected SQLProjection(String sql,
                        String[] columnAliases,
                        Type[] types)

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SQLProjection

protected SQLProjection(String sql,
                        String groupBy,
                        String[] columnAliases,
                        Type[] types)

Method Detail

toSqlString

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

Description copied from interface: Projection

Render the SQL fragment

Specified by:

toSqlString in interface Projection

Parameters:

criteriaQuery -

Returns:

String

Throws:

HibernateException

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toGroupSqlString

public String toGroupSqlString(Criteria criteria,
                               CriteriaQuery criteriaQuery)
                        throws HibernateException

Description copied from interface: Projection

Render the SQL fragment to be used in the group by clause

Specified by:

toGroupSqlString in interface Projection

Parameters:

criteriaQuery -

Returns:

String

Throws:

HibernateException

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getTypes

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

Description copied from interface: Projection

Return types returned by the rendered SQL fragment

Specified by:

getTypes in interface Projection

Parameters:

crit -

criteriaQuery -

Returns:

Type[]

Throws:

HibernateException

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toString

public String toString()

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getAliases

public String[] getAliases()

Description copied from interface: Projection

Get the user-visible aliases for this projection (ie. the ones that will be passed to the ResultTransformer)

Specified by:

getAliases in interface Projection

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getColumnAliases

public String[] getColumnAliases(int loc)

Description copied from interface: Projection

Get the SQL select clause column aliases

Specified by:

getColumnAliases in interface Projection

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isGrouped

public boolean isGrouped()

Description copied from interface: Projection

Does this projection specify grouping attributes?

Specified by:

isGrouped in interface Projection

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getTypes

public Type[] getTypes(String alias,
                       Criteria crit,
                       CriteriaQuery criteriaQuery)

Description copied from interface: Projection

Return types for a particular user-visible alias

Specified by:

getTypes in interface Projection

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getColumnAliases

public String[] getColumnAliases(String alias,
                                 int loc)

Description copied from interface: Projection

Get the SQL select clause column aliases for a particular user-visible alias

Specified by:

getColumnAliases in interface Projection

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