public class SQLProjection extends Object implements Projection
Modifier | Constructor and Description |
---|---|
protected |
SQLProjection(String sql,
String[] columnAliases,
Type[] types) |
protected |
SQLProjection(String sql,
String groupBy,
String[] columnAliases,
Type[] types) |
Modifier and Type | Method and Description |
---|---|
String[] |
getAliases()
Get the criteria-level aliases for this projection (ie.
|
String[] |
getColumnAliases(int loc)
Get the SQL column aliases used by this projection for the columns it writes for inclusion into the
SELECT clause (
Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery) . |
String[] |
getColumnAliases(String alias,
int loc)
Get the SQL column aliases used by this projection for the columns it writes for inclusion into the
SELECT clause (
Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery) for a particular criteria-level alias. |
Type[] |
getTypes(Criteria crit,
CriteriaQuery criteriaQuery)
Types returned by the rendered SQL
fragment . |
Type[] |
getTypes(String alias,
Criteria crit,
CriteriaQuery criteriaQuery)
Get the return types for a particular user-visible alias.
|
boolean |
isGrouped()
Is this projection fragment (SELECT clause) also part of the GROUP BY
|
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 to be used in the SELECT clause.
|
String |
toString() |
public String toSqlString(Criteria criteria, int loc, CriteriaQuery criteriaQuery)
Projection
toSqlString
in interface Projection
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.public String toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery)
Projection
toGroupSqlString
in interface Projection
criteria
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.public Type[] getTypes(Criteria crit, CriteriaQuery criteriaQuery)
Projection
fragment
. In other words what are the types
that would represent the values this projection asked to be pulled into the result set?getTypes
in interface Projection
crit
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.public String[] getAliases()
Projection
ResultTransformer
)getAliases
in interface Projection
public String[] getColumnAliases(int loc)
Projection
Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery)
. Hibernate always uses column aliases to extract data from the
JDBC ResultSet
, so it is important that these be implemented correctly in order for
Hibernate to be able to extract these val;ues correctly.getColumnAliases
in interface Projection
loc
- Just as in Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery)
, represents the number of columns rendered
prior to this projection.public boolean isGrouped()
Projection
isGrouped
in interface Projection
public Type[] getTypes(String alias, Criteria crit, CriteriaQuery criteriaQuery)
Projection
Projection.getTypes(org.hibernate.Criteria, CriteriaQuery)
in that here we are only interested in
the types related to the given criteria-level alias.getTypes
in interface Projection
alias
- The criteria-level alias for which to find types.crit
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.public String[] getColumnAliases(String alias, int loc)
Projection
Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery)
for a particular criteria-level alias.getColumnAliases
in interface Projection
alias
- The criteria-level aliasloc
- Just as in Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery)
, represents the number of columns rendered
prior to this projection.Copyright © 2001-2015 Red Hat, Inc. All Rights Reserved.