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CE-881 - Add QueryHints enum & set to QueryInput; do mysql result set streaming based on the POTENTIALLY_LARGE_NUMBER_OF_RESULTS hint being present

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darin.kelkhoff
2024-03-27 19:55:38 -05:00
parent df4ac3ec35
commit e86d581fe4
2 changed files with 94 additions and 9 deletions
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79
qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/actions/tables/query/QueryInput.java
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@ -24,6 +24,7 @@ package com.kingsrook.qqq.backend.core.model.actions.tables.query;
import java.util.ArrayList;
import java.util.Collection;
import java.util.EnumSet;
import java.util.List;
import java.util.Set;
import com.kingsrook.qqq.backend.core.actions.QBackendTransaction;
@ -68,6 +69,24 @@ public class QueryInput extends AbstractTableActionInput implements QueryOrGetIn
private boolean includeAssociations = false;
private Collection<String> associationNamesToInclude = null;
private EnumSet<QueryHint> queryHints = EnumSet.noneOf(QueryHint.class);
/*******************************************************************************
** Information about the query that an application (or qqq service) may know and
** want to tell the backend, that can help influence how the backend processes
** query.
**
** For example, a query with potentially a large result set, for MySQL backend,
** we may want to configure the result set to stream results rather than do its
** default in-memory thing. See RDBMSQueryAction for usage.
*******************************************************************************/
public enum QueryHint
{
POTENTIALLY_LARGE_NUMBER_OF_RESULTS
}
/*******************************************************************************
@ -569,4 +588,64 @@ public class QueryInput extends AbstractTableActionInput implements QueryOrGetIn
return (this);
}
/*******************************************************************************
** Getter for queryHints
*******************************************************************************/
public EnumSet<QueryHint> getQueryHints()
{
return (this.queryHints);
}
/*******************************************************************************
** Setter for queryHints
*******************************************************************************/
public void setQueryHints(EnumSet<QueryHint> queryHints)
{
this.queryHints = queryHints;
}
/*******************************************************************************
** Fluent setter for queryHints
*******************************************************************************/
public QueryInput withQueryHints(EnumSet<QueryHint> queryHints)
{
this.queryHints = queryHints;
return (this);
}
/*******************************************************************************
** Fluent setter for queryHints
*******************************************************************************/
public QueryInput withQueryHint(QueryHint queryHint)
{
if(this.queryHints == null)
{
this.queryHints = EnumSet.noneOf(QueryHint.class);
}
this.queryHints.add(queryHint);
return (this);
}
/*******************************************************************************
** Fluent setter for queryHints
*******************************************************************************/
public QueryInput withoutQueryHint(QueryHint queryHint)
{
if(this.queryHints != null)
{
this.queryHints.remove(queryHint);
}
return (this);
}
}