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Add support for one-to-one joins;

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Add support for tables that aren't yet in the QInstance, but instead is in the QBitProductionContext's metadataProducerMultiOutputStack
This commit is contained in:
darin.kelkhoff
2025-06-12 15:19:10 -05:00
parent 5db8cf9ca1
commit 3c765e9e47
2 changed files with 46 additions and 13 deletions
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57
qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/producers/ChildJoinFromRecordEntityGenericMetaDataProducer.java
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@ -26,12 +26,15 @@ import java.util.Objects;
import com.kingsrook.qqq.backend.core.exceptions.QException;
import com.kingsrook.qqq.backend.core.model.actions.tables.query.QFilterOrderBy;
import com.kingsrook.qqq.backend.core.model.metadata.MetaDataProducerInterface;
import com.kingsrook.qqq.backend.core.model.metadata.MetaDataProducerMultiOutput;
import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
import com.kingsrook.qqq.backend.core.model.metadata.joins.JoinOn;
import com.kingsrook.qqq.backend.core.model.metadata.joins.JoinType;
import com.kingsrook.qqq.backend.core.model.metadata.joins.QJoinMetaData;
import com.kingsrook.qqq.backend.core.model.metadata.producers.annotations.ChildJoin;
import com.kingsrook.qqq.backend.core.model.metadata.qbits.QBitProductionContext;
import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
import com.kingsrook.qqq.backend.core.utils.CollectionUtils;
/*******************************************************************************
@ -62,6 +65,7 @@ public class ChildJoinFromRecordEntityGenericMetaDataProducer implements MetaDat
private String childTableName; // e.g., lineItem
private String parentTableName; // e.g., order
private String foreignKeyFieldName; // e.g., orderId
private boolean isOneToOne;
private ChildJoin.OrderBy[] orderBys;
@ -72,7 +76,7 @@ public class ChildJoinFromRecordEntityGenericMetaDataProducer implements MetaDat
/***************************************************************************
**
***************************************************************************/
public ChildJoinFromRecordEntityGenericMetaDataProducer(String childTableName, String parentTableName, String foreignKeyFieldName, ChildJoin.OrderBy[] orderBys)
public ChildJoinFromRecordEntityGenericMetaDataProducer(String childTableName, String parentTableName, String foreignKeyFieldName, ChildJoin.OrderBy[] orderBys, boolean isOneToOne)
{
Objects.requireNonNull(childTableName, "childTableName cannot be null");
Objects.requireNonNull(parentTableName, "parentTableName cannot be null");
@ -82,6 +86,7 @@ public class ChildJoinFromRecordEntityGenericMetaDataProducer implements MetaDat
this.parentTableName = parentTableName;
this.foreignKeyFieldName = foreignKeyFieldName;
this.orderBys = orderBys;
this.isOneToOne = isOneToOne;
}
@ -92,23 +97,14 @@ public class ChildJoinFromRecordEntityGenericMetaDataProducer implements MetaDat
@Override
public QJoinMetaData produce(QInstance qInstance) throws QException
{
QTableMetaData parentTable = qInstance.getTable(parentTableName);
if(parentTable == null)
{
throw (new QException("Could not find tableMetaData " + parentTableName));
}
QTableMetaData childTable = qInstance.getTable(childTableName);
if(childTable == null)
{
throw (new QException("Could not find tableMetaData " + childTable));
}
QTableMetaData parentTable = getTable(qInstance, parentTableName);
QTableMetaData childTable = getTable(qInstance, childTableName);
QJoinMetaData join = new QJoinMetaData()
.withLeftTable(parentTableName)
.withRightTable(childTableName)
.withInferredName()
.withType(JoinType.ONE_TO_MANY)
.withType(isOneToOne ? JoinType.ONE_TO_ONE : JoinType.ONE_TO_MANY)
.withJoinOn(new JoinOn(parentTable.getPrimaryKeyField(), foreignKeyFieldName));
if(orderBys != null && orderBys.length > 0)
@ -131,6 +127,41 @@ public class ChildJoinFromRecordEntityGenericMetaDataProducer implements MetaDat
/***************************************************************************
*
***************************************************************************/
private QTableMetaData getTable(QInstance qInstance, String tableName) throws QException
{
QTableMetaData table = qInstance.getTable(tableName);
if(table == null)
{
///////////////////////////////////////////////////////////////////////////////
// in case we're producing a QBit, and it's added a table to a multi-output, //
// but not yet the instance, see if we can get table from there //
///////////////////////////////////////////////////////////////////////////////
for(MetaDataProducerMultiOutput metaDataProducerMultiOutput : QBitProductionContext.getReadOnlyViewOfMetaDataProducerMultiOutputStack())
{
table = CollectionUtils.nonNullList(metaDataProducerMultiOutput.getEach(QTableMetaData.class)).stream()
.filter(t -> t.getName().equals(tableName))
.findFirst().orElse(null);
if(table != null)
{
break;
}
}
}
if(table == null)
{
throw (new QException("Could not find tableMetaData: " + table));
}
return table;
}
/*******************************************************************************
** Getter for sourceClass
**

2
qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/producers/annotations/ChildJoin.java
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@ -38,6 +38,8 @@ public @interface ChildJoin
OrderBy[] orderBy() default { };
boolean isOneToOne() default false;
/***************************************************************************
**
***************************************************************************/