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java.lang.Object org.hibernate.criterion.SimpleProjection
public abstract class SimpleProjection
A single-column projection that may be aliased
Constructor Summary | |
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SimpleProjection()
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Method Summary | |
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Projection |
as(String alias)
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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(int loc,
Criteria criteria,
CriteriaQuery criteriaQuery)
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. |
String[] |
getColumnAliases(String alias,
int loc,
Criteria criteria,
CriteriaQuery criteriaQuery)
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. |
int |
getColumnCount(Criteria criteria,
CriteriaQuery criteriaQuery)
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Type[] |
getTypes(String alias,
Criteria criteria,
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 |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.hibernate.criterion.Projection |
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getTypes, toSqlString |
Constructor Detail |
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public SimpleProjection()
Method Detail |
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public Projection as(String alias)
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.
public String[] getColumnAliases(String alias, int loc, Criteria criteria, CriteriaQuery criteriaQuery)
EnhancedProjection
Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery)
for a particular criteria-level alias.
getColumnAliases
in interface EnhancedProjection
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.criteria
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.
public Type[] getTypes(String alias, Criteria criteria, CriteriaQuery criteriaQuery) throws HibernateException
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.criteria
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.
HibernateException
- Indicates a problem resolving the typespublic 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 int getColumnCount(Criteria criteria, CriteriaQuery criteriaQuery)
public String[] getColumnAliases(int loc, Criteria criteria, CriteriaQuery criteriaQuery)
EnhancedProjection
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 EnhancedProjection
loc
- Just as in Projection.toSqlString(org.hibernate.Criteria, int, org.hibernate.criterion.CriteriaQuery)
, represents the number of columns rendered
prior to this projection.criteria
- 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 toGroupSqlString(Criteria criteria, CriteriaQuery criteriaQuery) throws HibernateException
Projection
toGroupSqlString
in interface Projection
criteria
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.
HibernateException
- Indicates a problem performing the renderingpublic boolean isGrouped()
Projection
isGrouped
in interface Projection
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