use of org.hibernate.sql.ast.tree.cte.CteColumn in project hibernate-orm by hibernate.
the class AbstractSqlAstTranslator method visitCteContainer.
public void visitCteContainer(CteContainer cteContainer) {
final Collection<CteStatement> cteStatements = cteContainer.getCteStatements().values();
if (cteStatements.isEmpty()) {
return;
}
appendSql("with ");
if (cteContainer.isWithRecursive()) {
appendSql("recursive ");
}
String mainSeparator = "";
for (CteStatement cte : cteStatements) {
appendSql(mainSeparator);
appendSql(cte.getCteTable().getTableExpression());
appendSql(" (");
String separator = "";
for (CteColumn cteColumn : cte.getCteTable().getCteColumns()) {
appendSql(separator);
appendSql(cteColumn.getColumnExpression());
separator = COMA_SEPARATOR;
}
appendSql(") as ");
if (cte.getMaterialization() != CteMaterialization.UNDEFINED) {
renderMaterializationHint(cte.getMaterialization());
}
appendSql(OPEN_PARENTHESIS);
cte.getCteDefinition().accept(this);
appendSql(')');
renderSearchClause(cte);
renderCycleClause(cte);
mainSeparator = COMA_SEPARATOR;
}
appendSql(WHITESPACE);
}
use of org.hibernate.sql.ast.tree.cte.CteColumn in project hibernate-orm by hibernate.
the class AbstractSqlAstTranslator method renderCycleClause.
protected void renderCycleClause(CteStatement cte) {
String separator;
if (cte.getCycleMarkColumn() != null) {
appendSql(" cycle ");
separator = "";
for (CteColumn cycleColumn : cte.getCycleColumns()) {
appendSql(separator);
appendSql(cycleColumn.getColumnExpression());
separator = COMA_SEPARATOR;
}
appendSql(" set ");
appendSql(cte.getCycleMarkColumn().getColumnExpression());
appendSql(" to '");
appendSql(cte.getCycleValue());
appendSql("' default '");
appendSql(cte.getNoCycleValue());
appendSql('\'');
}
}
use of org.hibernate.sql.ast.tree.cte.CteColumn 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);
}
use of org.hibernate.sql.ast.tree.cte.CteColumn in project hibernate-orm by hibernate.
the class CteInsertHandler method execute.
@Override
public int execute(DomainQueryExecutionContext executionContext) {
final SqmInsertStatement<?> sqmInsertStatement = getSqmStatement();
final SessionFactoryImplementor factory = executionContext.getSession().getFactory();
final EntityPersister entityDescriptor = getEntityDescriptor().getEntityPersister();
final String explicitDmlTargetAlias;
if (sqmInsertStatement.getTarget().getExplicitAlias() == null) {
explicitDmlTargetAlias = "dml_target";
} else {
explicitDmlTargetAlias = sqmInsertStatement.getTarget().getExplicitAlias();
}
final MultiTableSqmMutationConverter sqmConverter = new MultiTableSqmMutationConverter(entityDescriptor, sqmInsertStatement, sqmInsertStatement.getTarget(), explicitDmlTargetAlias, domainParameterXref, executionContext.getQueryOptions(), executionContext.getSession().getLoadQueryInfluencers(), executionContext.getQueryParameterBindings(), factory);
final TableGroup insertingTableGroup = sqmConverter.getMutatingTableGroup();
final Map<SqmParameter<?>, List<List<JdbcParameter>>> parameterResolutions;
if (domainParameterXref.getSqmParameterCount() == 0) {
parameterResolutions = Collections.emptyMap();
} else {
parameterResolutions = new IdentityHashMap<>();
}
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// visit the insertion target using our special converter, collecting
// information about the target paths
final int size = sqmStatement.getInsertionTargetPaths().size();
final List<Map.Entry<SqmCteTableColumn, Assignment>> targetPathColumns = new ArrayList<>(size);
final List<SqmCteTableColumn> targetPathSqmCteColumns = new ArrayList<>(size);
final Map<SqmParameter<?>, MappingModelExpressible<?>> paramTypeResolutions = new LinkedHashMap<>();
final NamedTableReference entityTableReference = new NamedTableReference(cteTable.getCteName(), TemporaryTable.DEFAULT_ALIAS, true, sessionFactory);
final InsertStatement insertStatement = new InsertStatement(entityTableReference);
final BaseSqmToSqlAstConverter.AdditionalInsertValues additionalInsertValues = sqmConverter.visitInsertionTargetPaths((assignable, columnReferences) -> {
// Find a matching cte table column and set that at the current index
for (SqmCteTableColumn column : cteTable.getColumns()) {
if (column.getType() == ((Expression) assignable).getExpressionType()) {
insertStatement.addTargetColumnReferences(columnReferences);
targetPathSqmCteColumns.add(column);
targetPathColumns.add(new AbstractMap.SimpleEntry<>(column, new Assignment(assignable, (Expression) assignable)));
return;
}
}
throw new IllegalStateException("Couldn't find matching cte column for: " + ((Expression) assignable).getExpressionType());
}, sqmInsertStatement, entityDescriptor, insertingTableGroup, (sqmParameter, mappingType, jdbcParameters) -> {
parameterResolutions.computeIfAbsent(sqmParameter, k -> new ArrayList<>(1)).add(jdbcParameters);
paramTypeResolutions.put(sqmParameter, mappingType);
});
final boolean assignsId = targetPathSqmCteColumns.contains(cteTable.getColumns().get(0));
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// Create the statement that represent the source for the entity cte
final Stack<SqlAstProcessingState> processingStateStack = sqmConverter.getProcessingStateStack();
final SqlAstProcessingState oldState = processingStateStack.pop();
final Statement queryStatement;
if (sqmInsertStatement instanceof SqmInsertSelectStatement) {
final QueryPart queryPart = sqmConverter.visitQueryPart(((SqmInsertSelectStatement<?>) sqmInsertStatement).getSelectQueryPart());
queryPart.visitQuerySpecs(querySpec -> {
// in which case we will fill the row_number column instead of the id column
if (additionalInsertValues.applySelections(querySpec, sessionFactory)) {
final SqmCteTableColumn rowNumberColumn = cteTable.getColumns().get(cteTable.getColumns().size() - 1);
final ColumnReference columnReference = new ColumnReference((String) null, rowNumberColumn.getColumnName(), false, null, null, (JdbcMapping) rowNumberColumn.getType(), sessionFactory);
insertStatement.getTargetColumnReferences().set(insertStatement.getTargetColumnReferences().size() - 1, columnReference);
targetPathSqmCteColumns.set(targetPathSqmCteColumns.size() - 1, rowNumberColumn);
}
if (!assignsId && entityDescriptor.getIdentifierGenerator() instanceof PostInsertIdentifierGenerator) {
final BasicType<Integer> rowNumberType = sessionFactory.getTypeConfiguration().getBasicTypeForJavaType(Integer.class);
querySpec.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())));
}
});
queryStatement = new SelectStatement(queryPart);
} else {
final List<SqmValues> sqmValuesList = ((SqmInsertValuesStatement<?>) sqmInsertStatement).getValuesList();
final List<Values> valuesList = new ArrayList<>(sqmValuesList.size());
for (SqmValues sqmValues : sqmValuesList) {
final Values values = sqmConverter.visitValues(sqmValues);
additionalInsertValues.applyValues(values);
valuesList.add(values);
}
final QuerySpec querySpec = new QuerySpec(true);
final NavigablePath navigablePath = new NavigablePath(entityDescriptor.getRootPathName());
final List<String> columnNames = new ArrayList<>(targetPathColumns.size());
for (Map.Entry<SqmCteTableColumn, Assignment> entry : targetPathColumns) {
for (ColumnReference columnReference : entry.getValue().getAssignable().getColumnReferences()) {
columnNames.add(columnReference.getColumnExpression());
querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, columnReference));
}
}
final ValuesTableGroup valuesTableGroup = new ValuesTableGroup(navigablePath, entityDescriptor.getEntityPersister(), valuesList, insertingTableGroup.getPrimaryTableReference().getIdentificationVariable(), columnNames, true, factory);
querySpec.getFromClause().addRoot(valuesTableGroup);
queryStatement = new SelectStatement(querySpec);
}
processingStateStack.push(oldState);
sqmConverter.pruneTableGroupJoins();
if (!assignsId && entityDescriptor.getIdentifierGenerator() instanceof PostInsertIdentifierGenerator) {
// Add the row number to the assignments
final SqmCteTableColumn rowNumberColumn = cteTable.getColumns().get(cteTable.getColumns().size() - 1);
final ColumnReference columnReference = new ColumnReference((String) null, rowNumberColumn.getColumnName(), false, null, null, (JdbcMapping) rowNumberColumn.getType(), sessionFactory);
insertStatement.getTargetColumnReferences().add(columnReference);
targetPathSqmCteColumns.add(rowNumberColumn);
}
final CteTable entityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), targetPathSqmCteColumns, factory);
// Create the main query spec that will return the count of rows
final QuerySpec querySpec = new QuerySpec(true, 1);
final List<DomainResult<?>> domainResults = new ArrayList<>(1);
final SelectStatement statement = new SelectStatement(querySpec, domainResults);
final CteStatement entityCte;
if (additionalInsertValues.requiresRowNumberIntermediate()) {
final CteTable fullEntityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), factory);
final String baseTableName = "base_" + entityCteTable.getTableExpression();
final CteStatement baseEntityCte = new CteStatement(entityCteTable.withName(baseTableName), queryStatement, // The query cte will be reused multiple times
CteMaterialization.MATERIALIZED);
statement.addCteStatement(baseEntityCte);
final CteColumn rowNumberColumn = fullEntityCteTable.getCteColumns().get(fullEntityCteTable.getCteColumns().size() - 1);
final ColumnReference rowNumberColumnReference = new ColumnReference("e", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory);
final CteColumn idColumn = fullEntityCteTable.getCteColumns().get(0);
final BasicValuedMapping idType = (BasicValuedMapping) idColumn.getJdbcMapping();
final Optimizer optimizer = ((OptimizableGenerator) entityDescriptor.getIdentifierGenerator()).getOptimizer();
final BasicValuedMapping integerType = (BasicValuedMapping) rowNumberColumn.getJdbcMapping();
final Expression rowNumberMinusOneModuloIncrement = new BinaryArithmeticExpression(new BinaryArithmeticExpression(rowNumberColumnReference, BinaryArithmeticOperator.SUBTRACT, new QueryLiteral<>(1, (BasicValuedMapping) rowNumberColumn.getJdbcMapping()), integerType), BinaryArithmeticOperator.MODULO, new QueryLiteral<>(optimizer.getIncrementSize(), integerType), integerType);
// Create the CTE that fetches a new sequence value for the row numbers that need it
{
final QuerySpec rowsWithSequenceQuery = new QuerySpec(true);
rowsWithSequenceQuery.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(baseTableName, "e", false, factory)));
rowsWithSequenceQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, rowNumberColumnReference));
final String fragment = ((BulkInsertionCapableIdentifierGenerator) entityDescriptor.getIdentifierGenerator()).determineBulkInsertionIdentifierGenerationSelectFragment(sessionFactory.getSqlStringGenerationContext());
rowsWithSequenceQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(2, 1, new SelfRenderingSqlFragmentExpression(fragment)));
rowsWithSequenceQuery.applyPredicate(new ComparisonPredicate(rowNumberMinusOneModuloIncrement, ComparisonOperator.EQUAL, new QueryLiteral<>(0, integerType)));
final CteTable rowsWithSequenceCteTable = new CteTable(ROW_NUMBERS_WITH_SEQUENCE_VALUE, Arrays.asList(rowNumberColumn, idColumn), sessionFactory);
final SelectStatement rowsWithSequenceStatement = new SelectStatement(rowsWithSequenceQuery);
final CteStatement rowsWithSequenceCte = new CteStatement(rowsWithSequenceCteTable, rowsWithSequenceStatement, // The query cte will be reused multiple times
CteMaterialization.MATERIALIZED);
statement.addCteStatement(rowsWithSequenceCte);
}
// Create the CTE that represents the entity cte
{
final QuerySpec entityQuery = new QuerySpec(true);
final NavigablePath navigablePath = new NavigablePath(baseTableName);
final TableGroup baseTableGroup = new TableGroupImpl(navigablePath, null, new NamedTableReference(baseTableName, "e", false, factory), null);
final TableGroup rowsWithSequenceTableGroup = new CteTableGroup(new NamedTableReference(ROW_NUMBERS_WITH_SEQUENCE_VALUE, "t", false, factory));
baseTableGroup.addTableGroupJoin(new TableGroupJoin(rowsWithSequenceTableGroup.getNavigablePath(), SqlAstJoinType.LEFT, rowsWithSequenceTableGroup, new ComparisonPredicate(new BinaryArithmeticExpression(rowNumberColumnReference, BinaryArithmeticOperator.SUBTRACT, rowNumberMinusOneModuloIncrement, integerType), ComparisonOperator.EQUAL, new ColumnReference("t", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory))));
entityQuery.getFromClause().addRoot(baseTableGroup);
entityQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, new BinaryArithmeticExpression(new ColumnReference("t", idColumn.getColumnExpression(), false, null, null, idColumn.getJdbcMapping(), factory), BinaryArithmeticOperator.ADD, new BinaryArithmeticExpression(rowNumberColumnReference, BinaryArithmeticOperator.SUBTRACT, new ColumnReference("t", rowNumberColumn.getColumnExpression(), false, null, null, rowNumberColumn.getJdbcMapping(), factory), integerType), idType)));
final CteTable finalEntityCteTable;
if (targetPathSqmCteColumns.contains(getCteTable().getColumns().get(0))) {
finalEntityCteTable = entityCteTable;
} else {
targetPathSqmCteColumns.add(0, getCteTable().getColumns().get(0));
finalEntityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), targetPathSqmCteColumns, factory);
}
final List<CteColumn> cteColumns = finalEntityCteTable.getCteColumns();
for (int i = 1; i < cteColumns.size(); i++) {
final CteColumn cteColumn = cteColumns.get(i);
entityQuery.getSelectClause().addSqlSelection(new SqlSelectionImpl(i + 1, i, new ColumnReference("e", cteColumn.getColumnExpression(), false, null, null, cteColumn.getJdbcMapping(), factory)));
}
final SelectStatement entityStatement = new SelectStatement(entityQuery);
entityCte = new CteStatement(finalEntityCteTable, entityStatement, // The query cte will be reused multiple times
CteMaterialization.MATERIALIZED);
statement.addCteStatement(entityCte);
}
} else if (!assignsId && entityDescriptor.getIdentifierGenerator() instanceof PostInsertIdentifierGenerator) {
final String baseTableName = "base_" + entityCteTable.getTableExpression();
final CteStatement baseEntityCte = new CteStatement(entityCteTable.withName(baseTableName), queryStatement, // The query cte will be reused multiple times
CteMaterialization.MATERIALIZED);
statement.addCteStatement(baseEntityCte);
targetPathSqmCteColumns.add(0, cteTable.getColumns().get(0));
final CteTable finalEntityCteTable = BaseSqmToSqlAstConverter.createCteTable(getCteTable(), targetPathSqmCteColumns, factory);
final QuerySpec finalQuerySpec = new QuerySpec(true);
final SelectStatement finalQueryStatement = new SelectStatement(finalQuerySpec);
entityCte = new CteStatement(finalEntityCteTable, finalQueryStatement, // The query cte will be reused multiple times
CteMaterialization.MATERIALIZED);
} else {
entityCte = new CteStatement(entityCteTable, queryStatement, // The query cte will be reused multiple times
CteMaterialization.MATERIALIZED);
statement.addCteStatement(entityCte);
}
// Add all CTEs
final String baseInsertCte = addDmlCtes(statement, entityCte, targetPathColumns, assignsId, sqmConverter, parameterResolutions, factory);
final Expression count = createCountStar(factory, sqmConverter);
domainResults.add(new BasicResult(0, null, ((SqlExpressible) count).getJdbcMapping().getJavaTypeDescriptor()));
querySpec.getSelectClause().addSqlSelection(new SqlSelectionImpl(1, 0, count));
querySpec.getFromClause().addRoot(new CteTableGroup(new NamedTableReference(// We want to return the insertion count of the base table
baseInsertCte, CTE_TABLE_IDENTIFIER, false, factory)));
// Execute the statement
final JdbcServices jdbcServices = factory.getJdbcServices();
final SqlAstTranslator<JdbcSelect> translator = jdbcServices.getJdbcEnvironment().getSqlAstTranslatorFactory().buildSelectTranslator(factory, statement);
final JdbcParameterBindings jdbcParameterBindings = SqmUtil.createJdbcParameterBindings(executionContext.getQueryParameterBindings(), domainParameterXref, SqmUtil.generateJdbcParamsXref(domainParameterXref, sqmConverter), factory.getRuntimeMetamodels().getMappingMetamodel(), navigablePath -> sqmConverter.getMutatingTableGroup(), new SqmParameterMappingModelResolutionAccess() {
@Override
@SuppressWarnings("unchecked")
public <T> MappingModelExpressible<T> getResolvedMappingModelType(SqmParameter<T> parameter) {
return (MappingModelExpressible<T>) paramTypeResolutions.get(parameter);
}
}, executionContext.getSession());
final JdbcSelect select = translator.translate(jdbcParameterBindings, executionContext.getQueryOptions());
executionContext.getSession().autoFlushIfRequired(select.getAffectedTableNames());
List<Object> list = jdbcServices.getJdbcSelectExecutor().list(select, jdbcParameterBindings, SqmJdbcExecutionContextAdapter.omittingLockingAndPaging(executionContext), row -> row[0], ListResultsConsumer.UniqueSemantic.NONE);
return ((Number) list.get(0)).intValue();
}
use of org.hibernate.sql.ast.tree.cte.CteColumn in project hibernate-orm by hibernate.
the class AbstractCteMutationHandler method createIdSubQueryPredicate.
protected Predicate createIdSubQueryPredicate(List<? extends Expression> lhsExpressions, CteStatement idSelectCte, ModelPart fkModelPart, SessionFactoryImplementor factory) {
final NamedTableReference idSelectTableReference = new NamedTableReference(idSelectCte.getCteTable().getTableExpression(), CTE_TABLE_IDENTIFIER, false, factory);
final Junction predicate = new Junction(Junction.Nature.CONJUNCTION);
final List<CteColumn> cteColumns = idSelectCte.getCteTable().getCteColumns();
final int size = lhsExpressions.size();
final QuerySpec subQuery = new QuerySpec(false, 1);
subQuery.getFromClause().addRoot(new CteTableGroup(idSelectTableReference));
final SelectClause subQuerySelectClause = subQuery.getSelectClause();
if (fkModelPart == null) {
for (int i = 0; i < size; i++) {
final CteColumn cteColumn = cteColumns.get(i);
subQuerySelectClause.addSqlSelection(new SqlSelectionImpl(i + 1, i, new ColumnReference(idSelectTableReference, cteColumn.getColumnExpression(), cteColumn.getJdbcMapping(), factory)));
}
} else {
fkModelPart.forEachSelectable((selectionIndex, selectableMapping) -> {
subQuerySelectClause.addSqlSelection(new SqlSelectionImpl(selectionIndex + 1, selectionIndex, new ColumnReference(idSelectTableReference, selectableMapping.getSelectionExpression(), selectableMapping.getJdbcMapping(), factory)));
});
}
final Expression lhs;
if (lhsExpressions.size() == 1) {
lhs = lhsExpressions.get(0);
} else {
lhs = new SqlTuple(lhsExpressions, null);
}
predicate.add(new InSubQueryPredicate(lhs, subQuery, false));
return predicate;
}
Aggregations