| java.lang.Object
 org.josql.functions.AbstractFunctionHandler
org.josql.functions.GroupingFunctions
| Method Summary | |
| public Double | avg(List allobjs, Expression exp, String saveValueName)
| | public Double | avg(Expression exp)
| | public Double | avg(List allobjs, Expression exp)
| | public void | checkType(Object o, Class expected, Expression exp)
| | public String | concat(List allobjs, Expression exp, String sep, String saveValueName)
| | public String | concat(List allobjs, Expression exp, String sep)
| | public String | concat(Expression exp)
| | public String | concat(List allobjs, Expression exp)
| | public Object | greatest(List allobjs, Expression exp, String saveValueName)
| | public Object | greatest(List allobjs, Expression exp)
| | public Object | greatestObject(List allobjs, Expression exp)
| | public Object | least(List allobjs, Expression exp, String saveValueName)
| | public Object | least(List allobjs, Expression exp)
| | public Object | leastObject(List allobjs, Expression exp)
| | public Object | max(List allobjs, Expression exp, String saveValueName)
| | public Object | max(Expression exp)
| | public Object | max(List allobjs, Expression exp)
| | public Map.Entry | maxEntry(Map m, String type)
| | public Object | maxObject(List allobjs, Expression exp)
| | public Object | maxObject(Expression exp)
| | public Object | min(Expression exp)
| | public Object | min(List allobjs, Expression exp)
| | public Object | min(List allobjs, Expression exp, String saveValueName)
| | public Map.Entry | minEntry(Object m, String type)
| | public Map.Entry | minEntry(Map m, String type)
| | public Object | minObject(Expression exp)
| | public Object | minObject(List allobjs, Expression exp)
| | public Map | occurrence(List objs)
A function that will take each item from the passed in List and
determine a "count" for each item, i.e. | | public Map | occurrence(List objs, Expression exp)
A function that will take each item from the passed in List and
determine a "count" for each item, i.e. | | public Map | occurrence(List objs, Expression exp, Expression limitExp)
This is the same as
GroupingFunctions.occurrence(List,Expression) except that the
second expression should evaluate to a number that will be used to limit the
results, the occurrence count must be greater than or equal to the value from
the expression.
Parameters:
objs - The List of objects to operate on.
Parameters:
exp - An optional expression that should be performed on each objectand the value returned used instead.
Parameters:
limitExp - An expression that when evaluated should return a number, thiswill then be used to limit the results returned to those that have anoccurrence count >= that number. | | public Double | sum(List allobjs, Expression exp, String saveValueName)
| | public Double | sum(Expression exp)
| | public Double | sum(List objs, Expression exp)
| | public Double | sum(List objs, String acc)
This function allows you to specify your own accessor as a string that will
be used to access the relevant value for each of the objects in the objs
List. |
| occurrence | | public Map occurrence(List objs) throws QueryExecutionException(Code) | | A function that will take each item from the passed in List and
determine a "count" for each item, i.e. how many times each item appears.
Parameters:
objs - The List of objects to operate on. A Map of object to a count of the number of times the object appears in the list.
throws:
QueryExecutionException - Won't happen in this method. |
| occurrence | | public Map occurrence(List objs, Expression exp) throws QueryExecutionException(Code) | | A function that will take each item from the passed in List and
determine a "count" for each item, i.e. how many times each item appears.
Parameters:
objs - The List of objects to operate on.
Parameters:
exp - An optional expression that should be performed on each objectand the value returned used instead. A Map of object to a count of the number of times the object appears in the list.
throws:
QueryExecutionException - If the expression cannot be evaluated. |
| occurrence | | public Map occurrence(List objs, Expression exp, Expression limitExp) throws QueryExecutionException(Code) | | This is the same as
GroupingFunctions.occurrence(List,Expression) except that the
second expression should evaluate to a number that will be used to limit the
results, the occurrence count must be greater than or equal to the value from
the expression.
Parameters:
objs - The List of objects to operate on.
Parameters:
exp - An optional expression that should be performed on each objectand the value returned used instead.
Parameters:
limitExp - An expression that when evaluated should return a number, thiswill then be used to limit the results returned to those that have anoccurrence count >= that number. A Map of object to a count of the number of times the object appears in the list.
throws:
QueryExecutionException - If the expression cannot be evaluated or the limitExparg does not evaulate to a number. |
| sum | | public Double sum(List objs, String acc) throws QueryExecutionException(Code) | | This function allows you to specify your own accessor as a string that will
be used to access the relevant value for each of the objects in the objs
List.
Parameters:
objs - The List of objects you wish to sum over.
Parameters:
acc - The accessor to create for accessing the value in each of the objects in objs. The summed value.
throws:
QueryExecutionException - If the accessor is not valid for the objects in the list orif the accessor throws an exception. |
| Methods inherited from org.josql.functions.AbstractFunctionHandler | public void setQuery(Query q)(Code)(Java Doc)
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