Examples with ComparisonPredicate org.hibernate.sql.ast.tree.predicate.ComparisonPredicate used on opensource projects

Example 1 with ComparisonPredicate

use of org.hibernate.sql.ast.tree.predicate.ComparisonPredicate in project hibernate-orm by hibernate.

the class EmbeddedForeignKeyDescriptor method isSimpleJoinPredicate.

@Override
public boolean isSimpleJoinPredicate(Predicate predicate) {
    if (!(predicate instanceof Junction)) {
        return false;
    }
    final Junction junction = (Junction) predicate;
    if (junction.getNature() != Junction.Nature.CONJUNCTION) {
        return false;
    }
    final List<Predicate> predicates = junction.getPredicates();
    if (predicates.size() != keySelectableMappings.getJdbcTypeCount()) {
        return false;
    }
    Boolean lhsIsKey = null;
    for (int i = 0; i < predicates.size(); i++) {
        final Predicate p = predicates.get(i);
        if (!(p instanceof ComparisonPredicate)) {
            return false;
        }
        final ComparisonPredicate comparisonPredicate = (ComparisonPredicate) p;
        if (comparisonPredicate.getOperator() != ComparisonOperator.EQUAL) {
            return false;
        }
        final Expression lhsExpr = comparisonPredicate.getLeftHandExpression();
        final Expression rhsExpr = comparisonPredicate.getRightHandExpression();
        if (!(lhsExpr instanceof ColumnReference) || !(rhsExpr instanceof ColumnReference)) {
            return false;
        }
        final ColumnReference lhs = (ColumnReference) lhsExpr;
        final ColumnReference rhs = (ColumnReference) rhsExpr;
        if (lhsIsKey == null) {
            final String keyExpression = keySelectableMappings.getSelectable(i).getSelectionExpression();
            final String targetExpression = targetSelectableMappings.getSelectable(i).getSelectionExpression();
            if (keyExpression.equals(targetExpression)) {
                if (!lhs.getColumnExpression().equals(keyExpression) || !rhs.getColumnExpression().equals(keyExpression)) {
                    return false;
                }
            } else {
                if (keyExpression.equals(lhs.getColumnExpression())) {
                    if (!targetExpression.equals(rhs.getColumnExpression())) {
                        return false;
                    }
                    lhsIsKey = true;
                } else if (keyExpression.equals(rhs.getColumnExpression())) {
                    if (!targetExpression.equals(lhs.getColumnExpression())) {
                        return false;
                    }
                    lhsIsKey = false;
                } else {
                    return false;
                }
            }
        } else {
            final String lhsSelectionExpression;
            final String rhsSelectionExpression;
            if (lhsIsKey) {
                lhsSelectionExpression = keySelectableMappings.getSelectable(i).getSelectionExpression();
                rhsSelectionExpression = targetSelectableMappings.getSelectable(i).getSelectionExpression();
            } else {
                lhsSelectionExpression = targetSelectableMappings.getSelectable(i).getSelectionExpression();
                rhsSelectionExpression = keySelectableMappings.getSelectable(i).getSelectionExpression();
            }
            if (!lhs.getColumnExpression().equals(lhsSelectionExpression) || !rhs.getColumnExpression().equals(rhsSelectionExpression)) {
                return false;
            }
        }
    }
    return true;
}

Example 2 with ComparisonPredicate

use of org.hibernate.sql.ast.tree.predicate.ComparisonPredicate in project hibernate-orm by hibernate.

the class SimpleForeignKeyDescriptor method isSimpleJoinPredicate.

@Override
public boolean isSimpleJoinPredicate(Predicate predicate) {
    if (!(predicate instanceof ComparisonPredicate)) {
        return false;
    }
    final ComparisonPredicate comparisonPredicate = (ComparisonPredicate) predicate;
    if (comparisonPredicate.getOperator() != ComparisonOperator.EQUAL) {
        return false;
    }
    final Expression lhsExpr = comparisonPredicate.getLeftHandExpression();
    final Expression rhsExpr = comparisonPredicate.getRightHandExpression();
    if (!(lhsExpr instanceof ColumnReference) || !(rhsExpr instanceof ColumnReference)) {
        return false;
    }
    final String lhs = ((ColumnReference) lhsExpr).getColumnExpression();
    final String rhs = ((ColumnReference) rhsExpr).getColumnExpression();
    final String keyExpression = keySide.getModelPart().getSelectionExpression();
    final String targetExpression = targetSide.getModelPart().getSelectionExpression();
    return (lhs.equals(keyExpression) && rhs.equals(targetExpression)) || (lhs.equals(targetExpression) && rhs.equals(keyExpression));
}

Example 3 with ComparisonPredicate

use of org.hibernate.sql.ast.tree.predicate.ComparisonPredicate in project hibernate-orm by hibernate.

the class LoaderSelectBuilder method applyRestriction.

private void applyRestriction(QuerySpec rootQuerySpec, NavigablePath rootNavigablePath, TableGroup rootTableGroup, ModelPart modelPart, int numberColumns, Consumer<JdbcParameter> jdbcParameterConsumer, LoaderSqlAstCreationState sqlAstCreationState) {
    final SqlExpressionResolver sqlExpressionResolver = sqlAstCreationState.getSqlExpressionResolver();
    final NavigablePath navigablePath = rootNavigablePath.append(modelPart.getNavigableRole().getNavigableName());
    if (numberColumns == 1) {
        modelPart.forEachSelectable((columnIndex, selection) -> {
            final TableReference tableReference = rootTableGroup.resolveTableReference(navigablePath, selection.getContainingTableExpression());
            final ColumnReference columnRef = (ColumnReference) sqlExpressionResolver.resolveSqlExpression(createColumnReferenceKey(tableReference, selection.getSelectionExpression()), p -> new ColumnReference(tableReference, selection, creationContext.getSessionFactory()));
            if (numberOfKeysToLoad == 1) {
                final JdbcParameter jdbcParameter = new JdbcParameterImpl(selection.getJdbcMapping());
                jdbcParameterConsumer.accept(jdbcParameter);
                rootQuerySpec.applyPredicate(new ComparisonPredicate(columnRef, ComparisonOperator.EQUAL, jdbcParameter));
            } else {
                final InListPredicate predicate = new InListPredicate(columnRef);
                for (int i = 0; i < numberOfKeysToLoad; i++) {
                    for (int j = 0; j < numberColumns; j++) {
                        final JdbcParameter jdbcParameter = new JdbcParameterImpl(columnRef.getJdbcMapping());
                        jdbcParameterConsumer.accept(jdbcParameter);
                        predicate.addExpression(jdbcParameter);
                    }
                }
                rootQuerySpec.applyPredicate(predicate);
            }
        });
    } else {
        final List<ColumnReference> columnReferences = new ArrayList<>(numberColumns);
        modelPart.forEachSelectable((columnIndex, selection) -> {
            final TableReference tableReference = rootTableGroup.resolveTableReference(navigablePath, selection.getContainingTableExpression());
            columnReferences.add((ColumnReference) sqlExpressionResolver.resolveSqlExpression(createColumnReferenceKey(tableReference, selection.getSelectionExpression()), p -> new ColumnReference(tableReference, selection, creationContext.getSessionFactory())));
        });
        final SqlTuple tuple = new SqlTuple(columnReferences, modelPart);
        final InListPredicate predicate = new InListPredicate(tuple);
        for (int i = 0; i < numberOfKeysToLoad; i++) {
            final List<JdbcParameter> tupleParams = new ArrayList<>(numberColumns);
            for (int j = 0; j < numberColumns; j++) {
                final ColumnReference columnReference = columnReferences.get(j);
                final JdbcParameter jdbcParameter = new JdbcParameterImpl(columnReference.getJdbcMapping());
                jdbcParameterConsumer.accept(jdbcParameter);
                tupleParams.add(jdbcParameter);
            }
            final SqlTuple paramTuple = new SqlTuple(tupleParams, modelPart);
            predicate.addExpression(paramTuple);
        }
        rootQuerySpec.applyPredicate(predicate);
    }
}

Example 4 with ComparisonPredicate

use of org.hibernate.sql.ast.tree.predicate.ComparisonPredicate in project hibernate-orm by hibernate.

the class SimpleNaturalIdLoader method applyNaturalIdRestriction.

@Override
protected void applyNaturalIdRestriction(Object bindValue, TableGroup rootTableGroup, Consumer<Predicate> predicateConsumer, BiConsumer<JdbcParameter, JdbcParameterBinding> jdbcParameterConsumer, LoaderSqlAstCreationState sqlAstCreationState, SharedSessionContractImplementor session) {
    if (bindValue == null) {
        naturalIdMapping().getAttribute().forEachSelectable((index, selectable) -> {
            final Expression columnReference = resolveColumnReference(rootTableGroup, selectable, sqlAstCreationState.getSqlExpressionResolver(), session.getFactory());
            predicateConsumer.accept(new NullnessPredicate(columnReference));
        });
    } else {
        naturalIdMapping().getAttribute().breakDownJdbcValues(bindValue, (jdbcValue, jdbcValueMapping) -> {
            final Expression columnReference = resolveColumnReference(rootTableGroup, jdbcValueMapping, sqlAstCreationState.getSqlExpressionResolver(), session.getFactory());
            if (jdbcValue == null) {
                predicateConsumer.accept(new NullnessPredicate(columnReference));
            } else {
                final JdbcParameter jdbcParameter = new JdbcParameterImpl(jdbcValueMapping.getJdbcMapping());
                final ComparisonPredicate predicate = new ComparisonPredicate(columnReference, ComparisonOperator.EQUAL, jdbcParameter);
                predicateConsumer.accept(predicate);
                jdbcParameterConsumer.accept(jdbcParameter, new JdbcParameterBindingImpl(jdbcValueMapping.getJdbcMapping(), jdbcValue));
            }
        }, session);
    }
}

Example 5 with ComparisonPredicate

use of org.hibernate.sql.ast.tree.predicate.ComparisonPredicate in project hibernate-orm by hibernate.

the class CteInsertHandler method addDmlCtes.

protected String addDmlCtes(CteContainer statement, CteStatement queryCte, List<Map.Entry<SqmCteTableColumn, Assignment>> assignments, boolean assignsId, MultiTableSqmMutationConverter sqmConverter, Map<SqmParameter<?>, List<List<JdbcParameter>>> parameterResolutions, SessionFactoryImplementor factory) {
    final TableGroup updatingTableGroup = sqmConverter.getMutatingTableGroup();
    final EntityMappingType entityDescriptor = getEntityDescriptor();
    final EntityPersister entityPersister = entityDescriptor.getEntityPersister();
    final String rootEntityName = entityPersister.getRootEntityName();
    final EntityPersister rootEntityDescriptor = factory.getRuntimeMetamodels().getMappingMetamodel().getEntityDescriptor(rootEntityName);
    final String hierarchyRootTableName = ((Joinable) rootEntityDescriptor).getTableName();
    final TableReference hierarchyRootTableReference = updatingTableGroup.resolveTableReference(updatingTableGroup.getNavigablePath(), hierarchyRootTableName);
    assert hierarchyRootTableReference != null;
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    // cross-reference the TableReference by alias.  The TableGroup already
    // cross-references it by name, but the ColumnReference only has the alias
    final Map<String, TableReference> tableReferenceByAlias = CollectionHelper.mapOfSize(updatingTableGroup.getTableReferenceJoins().size() + 1);
    collectTableReference(updatingTableGroup.getPrimaryTableReference(), tableReferenceByAlias::put);
    for (int i = 0; i < updatingTableGroup.getTableReferenceJoins().size(); i++) {
        collectTableReference(updatingTableGroup.getTableReferenceJoins().get(i), tableReferenceByAlias::put);
    }
    final Map<TableReference, List<Map.Entry<SqmCteTableColumn, Assignment>>> assignmentsByTable = CollectionHelper.mapOfSize(updatingTableGroup.getTableReferenceJoins().size() + 1);
    for (int i = 0; i < assignments.size(); i++) {
        final Map.Entry<SqmCteTableColumn, Assignment> entry = assignments.get(i);
        final Assignment assignment = entry.getValue();
        final List<ColumnReference> assignmentColumnRefs = assignment.getAssignable().getColumnReferences();
        TableReference assignmentTableReference = null;
        for (int c = 0; c < assignmentColumnRefs.size(); c++) {
            final ColumnReference columnReference = assignmentColumnRefs.get(c);
            final TableReference tableReference = resolveTableReference(columnReference, updatingTableGroup, tableReferenceByAlias);
            // TODO: this could be fixed by introducing joins to DML statements
            if (assignmentTableReference != null && !assignmentTableReference.equals(tableReference)) {
                throw new IllegalStateException("Assignment referred to columns from multiple tables");
            }
            assignmentTableReference = tableReference;
        }
        assert assignmentTableReference != null;
        List<Map.Entry<SqmCteTableColumn, Assignment>> assignmentsForTable = assignmentsByTable.get(assignmentTableReference);
        if (assignmentsForTable == null) {
            assignmentsForTable = new ArrayList<>();
            assignmentsByTable.put(assignmentTableReference, assignmentsForTable);
        }
        assignmentsForTable.add(entry);
    }
    // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    // Add the root insert as cte
    final AbstractEntityPersister persister = (AbstractEntityPersister) entityDescriptor.getEntityPersister();
    final String rootTableName = persister.getTableName(0);
    final TableReference rootTableReference = updatingTableGroup.getTableReference(updatingTableGroup.getNavigablePath(), rootTableName, true, true);
    final IdentifierGenerator identifierGenerator = entityDescriptor.getEntityPersister().getIdentifierGenerator();
    final List<Map.Entry<SqmCteTableColumn, Assignment>> tableAssignments = assignmentsByTable.get(rootTableReference);
    if ((tableAssignments == null || tableAssignments.isEmpty()) && !(identifierGenerator instanceof PostInsertIdentifierGenerator)) {
        throw new IllegalStateException("There must be at least a single root table assignment");
    }
    final int tableSpan = persister.getTableSpan();
    final String[] rootKeyColumns = persister.getKeyColumns(0);
    final List<CteColumn> keyCteColumns = queryCte.getCteTable().getCteColumns().subList(0, rootKeyColumns.length);
    for (int i = 0; i < tableSpan; i++) {
        final String tableExpression = persister.getTableName(i);
        final TableReference updatingTableReference = updatingTableGroup.getTableReference(updatingTableGroup.getNavigablePath(), tableExpression, true, true);
        final List<Map.Entry<SqmCteTableColumn, Assignment>> assignmentList = assignmentsByTable.get(updatingTableReference);
        final NamedTableReference dmlTableReference = resolveUnionTableReference(updatingTableReference, tableExpression);
        final String[] keyColumns = persister.getKeyColumns(i);
        final List<ColumnReference> returningColumnReferences = new ArrayList<>(keyColumns.length + (assignmentList == null ? 0 : assignmentList.size()));
        final List<ColumnReference> insertColumnReferences;
        final QuerySpec insertSelectSpec = new QuerySpec(true);
        CteStatement finalCteStatement = null;
        final CteTable dmlResultCte;
        if (i == 0 && !assignsId && identifierGenerator instanceof PostInsertIdentifierGenerator) {
            // Special handling for identity generation
            final String baseTableName = "base_" + queryCte.getCteTable().getTableExpression();
            insertSelectSpec.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(baseTableName, "e", false, factory)));
            final CteColumn rowNumberColumn = queryCte.getCteTable().getCteColumns().get(queryCte.getCteTable().getCteColumns().size() - 1);
            final ColumnReference rowNumberColumnReference = new ColumnReference("e", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory);
            // Insert in the same order as the original tuples came
            insertSelectSpec.addSortSpecification(new SortSpecification(rowNumberColumnReference, SortOrder.ASCENDING));
            final List<CteColumn> returningColumns = new ArrayList<>(keyCteColumns.size() + 1);
            returningColumns.addAll(keyCteColumns);
            dmlResultCte = new CteTable(getCteTableName(tableExpression, "base_"), returningColumns, factory);
            for (int j = 0; j < keyColumns.length; j++) {
                returningColumnReferences.add(new ColumnReference(dmlTableReference, keyColumns[j], false, null, null, null, factory));
            }
            insertColumnReferences = Collections.emptyList();
            final SelectStatement queryStatement = (SelectStatement) queryCte.getCteDefinition();
            final QuerySpec querySpec = queryStatement.getQuerySpec();
            final NavigablePath navigablePath = new NavigablePath(baseTableName);
            final TableGroup baseTableGroup = new TableGroupImpl(navigablePath, null, new NamedTableReference(baseTableName, "e", false, factory), null);
            final TableGroup rootInsertCteTableGroup = new CteTableGroup(new NamedTableReference(getCteTableName(tableExpression), "t", false, factory));
            baseTableGroup.addTableGroupJoin(new TableGroupJoin(rootInsertCteTableGroup.getNavigablePath(), SqlAstJoinType.INNER, rootInsertCteTableGroup, new ComparisonPredicate(rowNumberColumnReference, ComparisonOperator.EQUAL, new ColumnReference("t", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory))));
            querySpec.getFromClause().addRoot(baseTableGroup);
            final List<CteColumn> cteColumns = queryCte.getCteTable().getCteColumns();
            // The id column in this case comes from the dml CTE
            final CteColumn idCteColumn = cteColumns.get(0);
            querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new ColumnReference("t", idCteColumn.getColumnExpression(), false, null, null, idCteColumn.getJdbcMapping(), factory)));
            // The other columns come from the base CTE
            for (int j = 1; j < cteColumns.size(); j++) {
                final CteColumn cteColumn = cteColumns.get(j);
                querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new ColumnReference("e", cteColumn.getColumnExpression(), false, null, null, cteColumn.getJdbcMapping(), factory)));
            }
            // Now build the final CTE statement
            final List<CteColumn> finalReturningColumns = new ArrayList<>(keyCteColumns.size() + 1);
            finalReturningColumns.addAll(keyCteColumns);
            finalReturningColumns.add(rowNumberColumn);
            final CteTable finalResultCte = new CteTable(getCteTableName(tableExpression), finalReturningColumns, factory);
            final QuerySpec finalResultQuery = new QuerySpec(true);
            finalResultQuery.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(dmlResultCte.getTableExpression(), "e", false, factory)));
            // The id column in this case comes from the dml CTE
            final ColumnReference idColumnReference = new ColumnReference("e", idCteColumn.getColumnExpression(), false, null, null, idCteColumn.getJdbcMapping(), factory);
            finalResultQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, idColumnReference));
            final BasicType<Integer> rowNumberType = sessionFactory.getTypeConfiguration().getBasicTypeForJavaType(Integer.class);
            finalResultQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new Over<>(new SelfRenderingFunctionSqlAstExpression("row_number", (appender, args, walker) -> appender.appendSql("row_number()"), Collections.emptyList(), rowNumberType, rowNumberType), Collections.emptyList(), Collections.emptyList())));
            finalResultQuery.addSortSpecification(new SortSpecification(idColumnReference, SortOrder.ASCENDING));
            final SelectStatement finalResultStatement = new SelectStatement(finalResultQuery);
            finalCteStatement = new CteStatement(finalResultCte, finalResultStatement);
        } else {
            insertSelectSpec.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(queryCte.getCteTable().getTableExpression(), "e", false, factory)));
            dmlResultCte = new CteTable(getCteTableName(tableExpression), keyCteColumns, factory);
            for (int j = 0; j < keyColumns.length; j++) {
                returningColumnReferences.add(new ColumnReference(dmlTableReference, keyColumns[j], false, null, null, null, factory));
                insertSelectSpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new ColumnReference("e", rootKeyColumns[j], false, null, null, null, factory)));
            }
            insertColumnReferences = returningColumnReferences;
        }
        final InsertStatement dmlStatement = new InsertStatement(dmlTableReference, returningColumnReferences);
        dmlStatement.addTargetColumnReferences(insertColumnReferences);
        if (assignmentList != null) {
            for (Map.Entry<SqmCteTableColumn, Assignment> entry : assignmentList) {
                final Assignment assignment = entry.getValue();
                // Skip the id mapping here as we handled that already
                if (assignment.getAssignedValue().getExpressionType() instanceof EntityIdentifierMapping) {
                    continue;
                }
                final List<ColumnReference> assignmentReferences = assignment.getAssignable().getColumnReferences();
                dmlStatement.addTargetColumnReferences(assignmentReferences);
                final int size = assignmentReferences.size();
                for (int j = 0; j < size; j++) {
                    final ColumnReference columnReference = assignmentReferences.get(j);
                    final String columnName = size > 1 ? entry.getKey().getColumnName() + '_' + i : entry.getKey().getColumnName();
                    insertSelectSpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new ColumnReference("e", columnName, columnReference.isColumnExpressionFormula(), null, null, columnReference.getJdbcMapping(), factory)));
                }
            }
        }
        dmlStatement.setSourceSelectStatement(insertSelectSpec);
        statement.addCteStatement(new CteStatement(dmlResultCte, dmlStatement));
        if (finalCteStatement != null) {
            statement.addCteStatement(finalCteStatement);
        }
        if (i == 0 && !assignsId && identifierGenerator instanceof PostInsertIdentifierGenerator) {
            // Special handling for identity generation
            statement.addCteStatement(queryCte);
        }
    }
    return getCteTableName(rootTableName);
}