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Add subFilterSetOperator (e.g., UNION, INTERSECT, EXCEPT) to QQueryFilter - along with implementation in RDBMS module, to generate such queries

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darin.kelkhoff
2024-12-13 10:39:54 -06:00
parent 96761b7162
commit 6687a58bfa
4 changed files with 339 additions and 36 deletions
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54
qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/actions/tables/query/QQueryFilter.java
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@ -55,6 +55,16 @@ public class QQueryFilter implements Serializable, Cloneable
private BooleanOperator booleanOperator = BooleanOperator.AND;
private List<QQueryFilter> subFilters = new ArrayList<>();
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// initial intent here was - put, e.g., UNION between multiple SELECT (with the individual selects being defined in subFilters) //
// but, actually SQL would let us do, e.g., SELECT UNION SELECT INTERSECT SELECT //
// so - we could see a future implementation where we: //
// - used the top-level subFilterSetOperator to indicate hat we are doing a multi-query set-operation query. //
// - looked within the subFilter, to see if it specified a subFilterSetOperator - and use that operator before that query //
// but - in v0, just using the one at the top-level works //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
private SubFilterSetOperator subFilterSetOperator = null;
////////////////////////////////////////////////////////////////////////////////////////////////////////////
// skip & limit are meant to only apply to QueryAction (at least at the initial time they are added here) //
// e.g., they are ignored in CountAction, AggregateAction, etc, where their meanings may be less obvious //
@ -75,6 +85,19 @@ public class QQueryFilter implements Serializable, Cloneable
/*******************************************************************************
**
*******************************************************************************/
public enum SubFilterSetOperator
{
UNION,
UNION_ALL,
INTERSECT,
EXCEPT
}
/*******************************************************************************
** Constructor
**
@ -799,4 +822,35 @@ public class QQueryFilter implements Serializable, Cloneable
}
}
/*******************************************************************************
** Getter for subFilterSetOperator
*******************************************************************************/
public SubFilterSetOperator getSubFilterSetOperator()
{
return (this.subFilterSetOperator);
}
/*******************************************************************************
** Setter for subFilterSetOperator
*******************************************************************************/
public void setSubFilterSetOperator(SubFilterSetOperator subFilterSetOperator)
{
this.subFilterSetOperator = subFilterSetOperator;
}
/*******************************************************************************
** Fluent setter for subFilterSetOperator
*******************************************************************************/
public QQueryFilter withSubFilterSetOperator(SubFilterSetOperator subFilterSetOperator)
{
this.subFilterSetOperator = subFilterSetOperator;
return (this);
}
}