[#725] Test and fix for issues with stripped off select items in copi…

…ed queries. Inlining select alias expressions now

core/impl/src/main/java/com/blazebit/persistence/impl/AbstractCommonQueryBuilder.java

@@ -56,13 +56,15 @@
 import com.blazebit.persistence.impl.query.EntityFunctionNode;
 import com.blazebit.persistence.impl.query.ObjectBuilderTypedQuery;
 import com.blazebit.persistence.impl.query.QuerySpecification;
+import com.blazebit.persistence.impl.transform.ExpressionModifierVisitor;
 import com.blazebit.persistence.impl.transform.ExpressionTransformerGroup;
 import com.blazebit.persistence.impl.transform.OuterFunctionVisitor;
 import com.blazebit.persistence.impl.transform.SimpleTransformerGroup;
 import com.blazebit.persistence.impl.transform.SizeTransformationVisitor;
 import com.blazebit.persistence.impl.transform.SizeTransformerGroup;
 import com.blazebit.persistence.impl.transform.SubqueryRecursiveExpressionVisitor;
 import com.blazebit.persistence.impl.util.SqlUtils;
+import com.blazebit.persistence.parser.AliasReplacementVisitor;
 import com.blazebit.persistence.parser.EntityMetamodel;
 import com.blazebit.persistence.parser.expression.Expression;
 import com.blazebit.persistence.parser.expression.ExpressionFactory;
@@ -247,7 +249,7 @@ protected AbstractCommonQueryBuilder(AbstractCommonQueryBuilder<QueryResultType,
         this.groupByManager = new GroupByManager(queryGenerator, parameterManager, subqueryInitFactory, mainQuery.jpaProvider, this.aliasManager, embeddableSplittingVisitor, groupByExpressionGatheringVisitor);
         this.havingManager = new HavingManager<>(queryGenerator, parameterManager, subqueryInitFactory, expressionFactory, groupByExpressionGatheringVisitor);
 
-        this.selectManager = new SelectManager<>(queryGenerator, parameterManager, this.joinManager, this.aliasManager, subqueryInitFactory, expressionFactory, mainQuery.jpaProvider, mainQuery, groupByExpressionGatheringVisitor, builder.resultType);
+        this.selectManager = new SelectManager<>(queryGenerator, parameterManager, this, this.joinManager, this.aliasManager, subqueryInitFactory, expressionFactory, mainQuery.jpaProvider, mainQuery, groupByExpressionGatheringVisitor, builder.resultType);
         this.orderByManager = new OrderByManager(queryGenerator, parameterManager, subqueryInitFactory, this.joinManager, this.aliasManager, embeddableSplittingVisitor, functionalDependencyAnalyzerVisitor, mainQuery.metamodel, mainQuery.jpaProvider, groupByExpressionGatheringVisitor);
         this.keysetManager = new KeysetManager(this, queryGenerator, parameterManager, mainQuery.jpaProvider, mainQuery.dbmsDialect);
 
@@ -317,7 +319,7 @@ protected AbstractCommonQueryBuilder(MainQuery mainQuery, QueryContext queryCont
         this.groupByManager = new GroupByManager(queryGenerator, parameterManager, subqueryInitFactory, mainQuery.jpaProvider, this.aliasManager, embeddableSplittingVisitor, groupByExpressionGatheringVisitor);
         this.havingManager = new HavingManager<>(queryGenerator, parameterManager, subqueryInitFactory, expressionFactory, groupByExpressionGatheringVisitor);
 
-        this.selectManager = new SelectManager<>(queryGenerator, parameterManager, this.joinManager, this.aliasManager, subqueryInitFactory, expressionFactory, mainQuery.jpaProvider, mainQuery, groupByExpressionGatheringVisitor, resultClazz);
+        this.selectManager = new SelectManager<>(queryGenerator, parameterManager, this, this.joinManager, this.aliasManager, subqueryInitFactory, expressionFactory, mainQuery.jpaProvider, mainQuery, groupByExpressionGatheringVisitor, resultClazz);
         this.orderByManager = new OrderByManager(queryGenerator, parameterManager, subqueryInitFactory, this.joinManager, this.aliasManager, embeddableSplittingVisitor, functionalDependencyAnalyzerVisitor, mainQuery.metamodel, mainQuery.jpaProvider, groupByExpressionGatheringVisitor);
         this.keysetManager = new KeysetManager(this, queryGenerator, parameterManager, mainQuery.jpaProvider, mainQuery.dbmsDialect);
 
@@ -364,7 +366,7 @@ void applyFrom(AbstractCommonQueryBuilder<?, ?, ?, ?, ?> builder, boolean fixedS
 
         selectManager.setDefaultSelect(nodeMapping, builder.selectManager.getSelectInfos());
         if (fixedSelect) {
-            selectManager.unserDefaultSelect();
+            selectManager.unsetDefaultSelect();
         }
         // No need to copy the finalSetOperationBuilder as that is only necessary for further builders which isn't possible after copying
         collectParameters();
@@ -1727,6 +1729,26 @@ protected JoinVisitor applyImplicitJoins(JoinVisitor parentVisitor) {
         return joinVisitor;
     }
 
+    void inlineSelectAlias(String selectAlias, Expression expression) {
+        final AliasReplacementVisitor aliasReplacementVisitor = new AliasReplacementVisitor(expression, selectAlias);
+        ExpressionModifierVisitor<ExpressionModifier> expressionModifierVisitor = new ExpressionModifierVisitor<ExpressionModifier>() {
+            @Override
+            public void visit(ExpressionModifier expressionModifier, ClauseType clauseType) {
+                Expression expr = expressionModifier.get();
+                Expression newExpr = expr.accept(aliasReplacementVisitor);
+                if (expr != newExpr) {
+                    expressionModifier.set(newExpr);
+                }
+            }
+        };
+        joinManager.apply(expressionModifierVisitor);
+        selectManager.apply(expressionModifierVisitor);
+        whereManager.apply(expressionModifierVisitor);
+        havingManager.apply(expressionModifierVisitor);
+        groupByManager.apply(expressionModifierVisitor);
+        orderByManager.apply(expressionModifierVisitor);
+    }
+
     protected void implicitJoinWhereClause() {
         final JoinVisitor joinVisitor = new JoinVisitor(mainQuery, null, joinManager, parameterManager, !mainQuery.jpaProvider.supportsSingleValuedAssociationIdExpressions());
         joinVisitor.setJoinRequired(true);

core/impl/src/main/java/com/blazebit/persistence/impl/SelectManager.java

@@ -80,6 +80,7 @@ public class SelectManager<T> extends AbstractManager<SelectInfo> {
     private final Map<String, Integer> selectAliasToPositionMap = new HashMap<String, Integer>();
     private final SelectObjectBuilderEndedListenerImpl selectObjectBuilderEndedListener = new SelectObjectBuilderEndedListenerImpl();
     private CaseExpressionBuilderListener caseExpressionBuilderListener;
+    private final AbstractCommonQueryBuilder<?, ?, ?, ?, ?> queryBuilder;
     private final GroupByExpressionGatheringVisitor groupByExpressionGatheringVisitor;
     private final JoinManager joinManager;
     private final AliasManager aliasManager;
@@ -89,9 +90,10 @@ public class SelectManager<T> extends AbstractManager<SelectInfo> {
     private final Class<?> resultClazz;
 
     @SuppressWarnings("unchecked")
-    public SelectManager(ResolvingQueryGenerator queryGenerator, ParameterManager parameterManager, JoinManager joinManager, AliasManager aliasManager, SubqueryInitiatorFactory subqueryInitFactory, ExpressionFactory expressionFactory, JpaProvider jpaProvider,
+    public SelectManager(ResolvingQueryGenerator queryGenerator, ParameterManager parameterManager, AbstractCommonQueryBuilder<?, ?, ?, ?, ?> queryBuilder, JoinManager joinManager, AliasManager aliasManager, SubqueryInitiatorFactory subqueryInitFactory, ExpressionFactory expressionFactory, JpaProvider jpaProvider,
                          MainQuery mainQuery, GroupByExpressionGatheringVisitor groupByExpressionGatheringVisitor, Class<?> resultClazz) {
         super(queryGenerator, parameterManager, subqueryInitFactory);
+        this.queryBuilder = queryBuilder;
         this.groupByExpressionGatheringVisitor = groupByExpressionGatheringVisitor;
         this.joinManager = joinManager;
         this.aliasManager = aliasManager;
@@ -539,7 +541,7 @@ boolean isDistinct() {
         return this.distinct;
     }
 
-    void unserDefaultSelect() {
+    void unsetDefaultSelect() {
         hasDefaultSelect = false;
     }
 
@@ -550,6 +552,9 @@ private void clearDefaultSelects() {
 
         for (int i = 0; i < selectInfos.size(); i++) {
             SelectInfo selectInfo = selectInfos.get(i);
+            if (selectInfo.getAlias() != null) {
+                queryBuilder.inlineSelectAlias(selectInfo.getAlias(), selectInfo.getExpression());
+            }
             aliasManager.unregisterAliasInfoForBottomLevel(selectInfo);
             unregisterParameterExpressions(selectInfo.getExpression());
         }

entity-view/impl/src/main/java/com/blazebit/persistence/view/impl/objectbuilder/transformer/correlation/AbstractCorrelatedSubselectTupleListTransformer.java

@@ -69,10 +69,17 @@ public AbstractCorrelatedSubselectTupleListTransformer(ExpressionFactory ef, Cor
         super(ef, correlator, viewRootType, embeddingViewType, correlationResult, correlationProviderFactory, attributePath, fetches, viewRootIndex, embeddingViewIndex, tupleIndex, correlationBasisType, correlationBasisEntity, entityViewConfiguration);
         this.evm = evm;
         this.viewRootAlias = viewRootAlias;
-        this.viewRootIdExpression = viewRootAlias + "." + getEntityIdName(viewRootType.getEntityClass());
+        String viewRootAliasPrefix = viewRootAlias + ".";
+        this.viewRootIdExpression = viewRootAliasPrefix + getEntityIdName(viewRootType.getEntityClass());
         this.viewRootIdMapperCount = viewIdMapperCount(viewRootType);
         this.embeddingViewPath = embeddingViewPath;
-        this.embeddingViewIdExpression = viewRootAlias.equals(embeddingViewPath) ? viewRootAlias + "." + getEntityIdName(embeddingViewType.getEntityClass()) : viewRootAlias + "." + embeddingViewPath + "." + getEntityIdName(embeddingViewType.getEntityClass());
+        if (viewRootAlias.equals(embeddingViewPath)) {
+            this.embeddingViewIdExpression = viewRootAliasPrefix + getEntityIdName(embeddingViewType.getEntityClass());
+        } else if (embeddingViewPath.startsWith(viewRootAliasPrefix)) {
+            this.embeddingViewIdExpression = embeddingViewPath + "." + getEntityIdName(embeddingViewType.getEntityClass());
+        } else {
+            this.embeddingViewIdExpression = viewRootAlias + "." + embeddingViewPath + "." + getEntityIdName(embeddingViewType.getEntityClass());
+        }
         this.embeddingViewIdMapperCount = viewIdMapperCount(embeddingViewType);
         this.maximumViewMapperCount = Math.max(1, Math.max(viewRootIdMapperCount, embeddingViewIdMapperCount));
         this.correlationBasisExpression = correlationBasisExpression;

entity-view/testsuite/src/test/java/com/blazebit/persistence/view/testsuite/fetch/subview/SubviewFetchTest.java

@@ -26,9 +26,11 @@
 import com.blazebit.persistence.view.EntityViewManager;
 import com.blazebit.persistence.view.EntityViewSetting;
 import com.blazebit.persistence.view.EntityViews;
+import com.blazebit.persistence.view.Sorters;
 import com.blazebit.persistence.view.spi.EntityViewConfiguration;
 import com.blazebit.persistence.view.testsuite.AbstractEntityViewTest;
 import com.blazebit.persistence.view.testsuite.fetch.subview.model.DocumentSelectSubviewTestView;
+import com.blazebit.persistence.view.testsuite.fetch.subview.model.DocumentSubselectSubviewTestView;
 import com.blazebit.persistence.view.testsuite.fetch.subview.model.PersonSelectSubview;
 import org.junit.Before;
 import org.junit.Test;
@@ -80,7 +82,7 @@ public void setUp() {
     @Test
     // NOTE: Eclipselink and Datanucleus don't support the single valued id access optimization which causes a cyclic join dependency
     @Category({ NoDatanucleus.class, NoOpenJPA.class, NoEclipselink.class })
-    public void testSubqueryFetch() {
+    public void testSubqueryFetchOptional() {
         EntityViewConfiguration cfg = EntityViews.createDefaultConfiguration();
         cfg.addEntityView(DocumentSelectSubviewTestView.class);
         cfg.addEntityView(PersonSelectSubview.class);
@@ -93,4 +95,21 @@ public void testSubqueryFetch() {
 
         assertEquals(1, results.size());
     }
+
+    @Test
+    // NOTE: Eclipselink and Datanucleus don't support the single valued id access optimization which causes a cyclic join dependency
+    @Category({ NoDatanucleus.class, NoOpenJPA.class, NoEclipselink.class })
+    public void testSubselectFetchWithSorter() {
+        EntityViewConfiguration cfg = EntityViews.createDefaultConfiguration();
+        cfg.addEntityView(DocumentSubselectSubviewTestView.class);
+        EntityViewManager evm = cfg.createEntityViewManager(cbf);
+
+        CriteriaBuilder<Document> criteria = cbf.create(em, Document.class, "d").orderByAsc("id");
+        EntityViewSetting<DocumentSubselectSubviewTestView, CriteriaBuilder<DocumentSubselectSubviewTestView>> setting = EntityViewSetting.create(DocumentSubselectSubviewTestView.class);
+        setting.addAttributeSorter("name", Sorters.ascending());
+        CriteriaBuilder<DocumentSubselectSubviewTestView> cb = evm.applySetting(setting, criteria);
+        List<DocumentSubselectSubviewTestView> results = cb.getResultList();
+
+        assertEquals(1, results.size());
+    }
 }

entity-view/testsuite/src/test/java/com/blazebit/persistence/view/testsuite/fetch/subview/model/DocumentSubselectSubviewTestView.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2014 - 2019 Blazebit.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.blazebit.persistence.view.testsuite.fetch.subview.model;
+
+import com.blazebit.persistence.testsuite.entity.Document;
+import com.blazebit.persistence.testsuite.entity.Person;
+import com.blazebit.persistence.view.EntityView;
+import com.blazebit.persistence.view.FetchStrategy;
+import com.blazebit.persistence.view.IdMapping;
+import com.blazebit.persistence.view.Mapping;
+
+/**
+ *
+ * @author Christian Beikov
+ * @since 1.4.0
+ */
+@EntityView(Document.class)
+public interface DocumentSubselectSubviewTestView {
+
+    @IdMapping
+    public Long getId();
+
+    public String getName();
+
+    @Mapping(fetch = FetchStrategy.SUBSELECT)
+    public Person getOwner();
+
+}