org.hibernate.criterion
Class AggregateProjection
java.lang.Object
org.hibernate.criterion.SimpleProjection
org.hibernate.criterion.AggregateProjection
- All Implemented Interfaces:
- java.io.Serializable, EnhancedProjection, Projection
- Direct Known Subclasses:
- AvgProjection, CountProjection
public class AggregateProjection
- extends SimpleProjection
Base class for standard aggregation functions.
- Author:
- max
- See Also:
- Serialized Form
Constructor Summary |
protected |
AggregateProjection(java.lang.String functionName,
java.lang.String propertyName)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
propertyName
protected final java.lang.String propertyName
AggregateProjection
protected AggregateProjection(java.lang.String functionName,
java.lang.String propertyName)
getFunctionName
public java.lang.String getFunctionName()
getPropertyName
public java.lang.String getPropertyName()
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object
getTypes
public Type[] getTypes(Criteria criteria,
CriteriaQuery criteriaQuery)
throws HibernateException
- 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?
- Parameters:
criteria
- The local criteria to which this project is attached (for resolution).criteriaQuery
- The overall criteria query instance.
- Returns:
- The return types.
- Throws:
HibernateException
- Indicates a problem resolving the types
toSqlString
public java.lang.String toSqlString(Criteria criteria,
int loc,
CriteriaQuery criteriaQuery)
throws HibernateException
- Render the SQL fragment to be used in the SELECT clause.
- Parameters:
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.
- Returns:
- The SQL fragment to plug into the SELECT
- Throws:
HibernateException
- Indicates a problem performing the rendering
getFunction
protected SQLFunction getFunction(CriteriaQuery criteriaQuery)
getFunction
protected SQLFunction getFunction(java.lang.String functionName,
CriteriaQuery criteriaQuery)
buildFunctionParameterList
protected java.util.List buildFunctionParameterList(Criteria criteria,
CriteriaQuery criteriaQuery)
buildFunctionParameterList
protected java.util.List buildFunctionParameterList(java.lang.String column)
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